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This chapter describes how to configure ATM LAN Emulation (LANE) on the ATM modules for the Catalyst 5000 family and 6000 family switches.
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Note For complete information on installing Catalyst 5000 family ATM modules, refer to the Catalyst 5000 Family Module Installation Guide. For complete information on installing Catalyst 6000 family ATM modules, refer to the Catalyst 6000/6500 Family Module Installation Guide. |
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Note For complete syntax and usage information for the commands used in this chapter, refer to the "Command Reference." |
This chapter consists of these sections:
These sections describe how ATM LANE works on the Catalyst 5000 family switches:
ATM LANE uses a client server architecture to emulate LANs over ATM. But unlike a physical LAN server/host architecture, emulated LANs are logical. You use LANE to provide connectivity among hubs, bridges, routers, and switches to an ATM high-speed backbone. In addition, LANE allows end stations to communicate with an ATM-attached device, such as a file server, through a LAN-to-ATM switch without requiring the traffic to pass through a router.
To configure LANE on a Catalyst 5000 or 6000 family switch LANE module requires connectivity to an ATM switch that supports User-Network Interface (UNI) 3.0 or 3.1 and point-to-multipoint signaling (for example, the Cisco LightStream 1010 ATM switch).
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Note Cisco supports only IEEE 802.3, Ethernet emulated LANs (ELANs). |
LANE provides the following features:
Because LANE connectivity is defined at the Media Access Control (MAC) layer, upper-layer protocol functions of LAN applications can operate unchanged when the devices join ELANs. This feature protects corporate investments in legacy LAN applications.
An ATM network can support multiple independent ELANs. End-system membership in any of the ELANs is independent of the physical location of the end system, simplifying hardware adds, moves, and changes. In addition, the end systems can move easily from one ELAN to another, whether or not the hardware moves. Figure 3-1 shows a typical ATM LANE configuration. End stations in switched LANs are interconnected through an ATM network with ELANs that have been mapped to existing VLANs on the switched LANs. VLANs can be extended across the ATM backbone by mapping them to configured ELANs.
You can set up an unlimited number of ELANs in an ATM cloud. A Catalyst 5000 or 6000 family switch ATM module can host multiple ELANs. If you use the Fast Simple Server Redundancy Protocol (FSSRP), each ELAN can contain multiple LES/BUS pairs for fault tolerance.
LANE is defined on a client-server LAN model and consists of these components:
ELAN names must be unique on an interface. If two interfaces participate in LANE, the second interface might be in a different switch cloud.
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Note Multiple LESs, BUSs, and LECSs can exist for the same ELAN, which provides redundancy. See "Configuring Fast SSRP for Redundant LANE Services" for information on how to configure server redundancy. |
The Catalyst 5000 and 6000 family switches support port-based virtual LAN (VLAN) configuration. An end station connected to a port belongs to the VLAN assigned to that port. The VLAN number identifies the VLAN.
On an ATM network, ELANs are designated by a name. You can configure some ELANs from a router and some from a Catalyst 5000 or 6000 family switch. You can configure some ELANs with unrestricted membership and some with restricted membership. You can also configure a default ELAN, which must have unrestricted membership.
To create a VLAN that spans multiple Catalyst LAN switches across an ATM network, you must map a given ATM ELAN to the same VLAN configured on each switch. For example, if you have VLAN 10 configured on two different switches, you must map VLAN 10 to the same ATM ELAN. To communicate between two or more ELANs, you must use a router, whether the ELANs are on the same or different Catalyst switches.
Establishing LANE operation and communication requires the following connections:
--Figure 3-2 illustrates the various types of VCCs.
The following process (illustrated in Figure 3-2Figure 3-2) occurs after you enable a LEC on the ATM module in a Catalyst 5000 or 6000 family switch:
1. Initialization
a. Using a locally configured ATM address, ILMI, or the ATM Forum's well-known address, the LEC discovers its own ATM address and that of the LECS and sets up a Configure-Direct Connection (a bidirectional point-to-point VCC) to the LECS.
b. The LECS responds by providing the LES ATM address.
c. The LEC tears down the Configure-Direct VCC.
2. Registration
a. The LEC set up a Control-Direct Connection to the LES and requests to join the ELAN.
b. The LES verifies that the LEC is allowed to join the ELAN.
c. The LES for the ELAN sets up a connection to the LECS to verify that the LEC is allowed to join the ELAN (bidirectional, point-to-point Server Configure VCC, link 11-12 in Figure 3-2). The LES configuration request contains the LEC MAC address, its ATM address, and the name of the ELAN. The LECS checks its database to determine whether the LEC can join that ELAN and uses the same VCC to inform the LES whether or not the LEC is allowed to join.
d. The LES allows or does not allow the LEC to join the ELAN.
e. If allowed, the LES adds the LEC to the unidirectional, point-to-multipoint Control Distribute VCC (link 2-8 in Figure 3-2) and confirms the LEC's membership over the bidirectional, point-to-point Control Direct VCC (link 1-7 in Figure 3-2). If not allowed, the LES rejects the LEC's request to join using the bidirectional, point-to-point Control Direct VCC (link 1-7 in Figure 3-2).
f. The LEC sends LE ARP packets for the broadcast address (all ones).
g. Sending LE ARP packets for the broadcast address returns the ATM address of the BUS. The LEC sets up the Multicast Send VCC (link 4-9 in Figure 3-2), and the BUS adds the LEC to the Multicast Forward VCC (link 5-10 in Figure 3-2) to and from the BUS.
As communication occurs on the ELAN, each LEC dynamically builds a local LE ARP table. A LEC LE ARP table can also have static, preconfigured entries. The LE ARP table maps MAC addresses to ATM addresses.
LE ARP is not the same as IP ARP. IP ARP maps IP addresses (Layer 3) to Ethernet MAC addresses (Layer 2); LE ARP maps ELAN MAC addresses (Layer 2) to ATM addresses (also Layer 2).
When a LEC first joins an ELAN, its LE ARP table has no dynamic entries, and the LEC has no information about destinations on or behind its ELAN. To learn about a destination when a packet is to be sent, the LEC follows this process to find the ATM address corresponding to the known MAC address:
1. The LEC sends an LE ARP request to the LES for its ELAN (point-to-point Control Direct VCC, link 1-7 in Figure 3-2).
2. If the MAC address is registered with the LES, the LES returns the corresponding ATM address. If not, the LES forwards the LE ARP request to all LECs on the ELAN (point-to-multipoint Control Distribute VCC, link 2-8 in Figure 3-2).
3. Any LEC that recognizes the MAC address responds with its ATM address (point-to-point Control Direct VCC, link 1-7 in Figure 3-2).
4. The LES forwards the response (point-to-multipoint Control Distribute VCC, link 2-8 in Figure 3-2).
5. The LEC adds the MAC address-ATM address pair to its LE ARP cache.
6. The LEC establishes a VCC to the desired destination and transmits packets to that ATM address (bidirectional, point-to-point Data Direct VCC, link 6-6 in Figure 3-2).
For unknown destinations, the LEC sends a packet to the BUS, which forwards the packet to all LECs. The BUS floods the packet because the destination might be behind a bridge that has not yet learned this particular address.
When a LEC sends broadcast, multicast, or unicast traffic with an unknown address, the following process occurs:
On a LAN, packets are addressed using the MAC-layer addresses of the destination and source stations. To provide similar functionality for LANE, MAC-layer addressing must be supported. Every LEC must have a MAC address. In addition, every LANE component (LECS, LES, BUS, and LEC) must have a unique ATM address.
All LECs on the same interface have the same automatically assigned MAC address. That MAC address is also used as the end-system identifier (ESI) part of the ATM address. Although LEC MAC addresses are not unique, all ATM addresses are unique.
An ATM address has the same syntax as a network service access point (NSAP), but it is not a network-level address. The ATM address consists of the following:
Cisco provides the following method of constructing and assigning ATM and MAC addresses in an LECS database. A pool of 16 MAC addresses is assigned to each ATM module. For constructing ATM addresses, the following assignments are made to the LANE components:
Because LANE components are defined on different subinterfaces of an ATM interface, the value of the selector field in an ATM address is different for each component. The result is a unique ATM address for each LANE component, even within the same Catalyst 5000 family switch. For more information about assigning components to subinterfaces, see the "ATM LANE Configuration Guidelines" section.
For example, if the MAC addresses assigned to an interface are 0800.200C.1000 through 0800.200C.100F, the ESI portion of the ATM addresses is assigned to LANE components as follows:
The Catalyst 5000 and 6000 families of switches build their ATM addresses by obtaining the ATM address prefix from the ATM switch. The switch combines the ATM address prefix with its own MAC address and the LEC subinterface number. After the ATM module determines its ATM address, it uses Interim Local Management Interface (ILMI) registration to register this address with the ATM switch. ILMI and signaling PVCs are set up by default.
Using the atm vc-per-vp command, you can configure the maximum number of virtual channel identifiers (VCIs) per virtual path identifier (VPI). If this value is configured when the ATM module registers with the ATM switch, the maximum number of VCIs per VPI is passed to the ATM switch. In this way, the ATM switch assigns to the Catalyst 5000 or 6000 family switch a VCI value for a switched virtual circuit (SVC) that is within the ATM switch range. The default is 10 VCI bits and 2 VPI bits on the ATM module. Any change from the default requires an ATM module reset.
You can configure Catalyst 5000 and 6000 family switches and the ATM modules to use VTP to create LECs automatically when VLANs are created on the Catalyst 5000 and 6000 family switches.
You must enable VTP on the ATM module and configure the LES/BUS and the LECS database for each VLAN/ELAN. LECs are created automatically based on the VTP mode of the switch in which the ATM module is installed:
For information about creating LECs automatically using VTP, see the "Creating LECs Automatically Using VTP" section.
Before implementing LANE, create a LANE plan for your own LANE scenario. Determine the LANE components you want to use, their locations, their associated VLANs, and the necessary redundancy features. Note the ATM address of each LANE component on each subinterface of each participating device.
Your plan should include the following information:
Table 3-1 shows the ATM LANE default configuration.
| Feature | Default Value |
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LANE components |
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PVCs | LMI and signaling PVCs are set up |
Preferred PHY (dual PHY modules only) | PHY A |
Output throttling | Disabled |
ILMI keepalives | Disabled |
UNI version | Autonegotiate (reverts to UNI 3.0 if autonegotiation fails) |
VTP | Disabled |
These guidelines apply when configuring LANE:
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Note FSSRP works only with LECS and LES/BUS combinations on Cisco devices. Third-party LANE components interoperate with the LECS and LES/BUS functions of Cisco devices but cannot take advantage of the redundancy features. Additionally, FSSRP-unaware LECs on Cisco equipment will not be able to take advantage of FSSRP LES/BUS redundancy. |
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Note To avoid affecting LES/BUS/LEC redundancy, do not override any LECS, LES, or BUS addresses. |
These sections describe how to configure ATM LANE on the ATM modules:
Use the session mod_num command to open a session to the ATM module from the Catalyst 5000 or 6000 family switch in which the module is installed.
This example shows how to session to an ATM module installed in slot 5 of the Catalyst 5000 switch:
Console> (enable) session 5 Trying ATM-5... Connected to ATM-5. Escape character is '^]'. ATM>
After opening the session, you see the ATM> prompt. You then have direct access only to the ATM module with which you have established a session.
The ATM module uses a subset of Cisco IOS software. Generally, Cisco IOS software works the same on the ATM module as it does on routers.
To configure the ATM module, you must use configuration mode. To enter configuration mode, enter the EXEC command configure at the privileged EXEC prompt (ATM#). You will see the following message, which asks you to specify the terminal, the nonvolatile RAM (NVRAM), or a file stored on a network server as the source of configuration commands:
Configuring from terminal, memory, or network [terminal]?
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Note You cannot configure from the network on the ATM modules. |
Terminal configuration means changing the running configuration. You can save the running configuration into the NVRAM using the copy running-config startup-config command. When you configure from memory, the running configuration is updated from the NVRAM.
To help you configure the LECS database and the LECS addresses on the ATM switch, default ATM addresses for the LECS, LES, BUS, and LECs are automatically generated on the ATM module based on the ATM address prefix learned from the switch and the MAC address of the ATM module. (For more information about the LANE default ATM addresses, see the "Assigning ATM Addresses Automatically" section.) Use one of these procedures to display the default ATM addresses on the ATM module.
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Display default ATM addresses. (Record the addresses for later use.) | show lane default-atm-addresses |
This example shows how to display the default ATM addresses on an ATM LANE module:
ATM#show lane default-atm-addresses interface ATM0: LANE Client: 47.00918100000000E04FACB401.00E04FACB070.** LANE Server: 47.00918100000000E04FACB401.00E04FACB071.** LANE Bus: 47.00918100000000E04FACB401.00E04FACB072.** LANE Config Server: 47.00918100000000E04FACB401.00E04FACB073.00 note: ** is the subinterface number byte in hex ATM#
If the ATM LANE module does not learn the ATM address prefix, ensure that the module is connected to the switch properly, that the interfaces on both the ATM module and the ATM switch are up, and that the ILMI PVC is established (use the show atm vc command to see configured PVCs). If the interface is administratively down, you will need to issue a no shutdown command to bring the interface up.
This example shows that the ATM module could not learn the ATM address prefix from the ATM switch through ILMI:
ATM#show lane default-atm-addresses interface ATM0: LANE Client: ...00E04FACB070.** LANE Server: ...00E04FACB071.** LANE Bus: ...00E04FACB072.** LANE Config Server: ...00E04FACB073.00 note: ** is the subinterface number byte in hex ATM#
To display the default ATM addresses on a dual PHY module connected to two different ATM switches, perform this task:
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You must program all LECS addresses into each ATM switch (such as a LightStream 1010 switch) connected to an ATM module in your LANE network. Programming the LECS addresses allows the LESs and LECs to determine the LECs addresses dynamically through ILMI.
To configure a LECS ATM address on a LightStream 1010 ATM switch, perform this task in privileged mode for each connected LightStream 1010 ATM switch:
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This example shows how to configure a LECS address on the LightStream 1010 ATM switch and verify the configuration:
Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#atm lecs-address-default 47.0091.8100.0000.00e0.4fac.b401.0010.0daa.cc43.00 Switch(config)#^Z Switch#show atm ilmi-configuration LECS Address(es): 47.0091.8100.0000.00e0.4fac.b401.0010.0daa.cc43.00 Switch#
You must configure at least one LES/BUS for each ELAN in the ATM LANE network. The LES/BUS for each ELAN should be configured on a separate subinterface of the major ATM interface on the ATM module. The LES/BUS and the LEC of the same ELAN can be configured on the same subinterface. The LES/BUSs for different ELANs cannot be configured on the same subinterface.
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Caution  If you plan to configure the ELAN in Step 3 for restricted membership, make sure the ELAN name you specify is exactly the same as the ELAN name specified in the LECS database. If the ELAN name specified in the lane server-bus command does not match the LECS database entry linking the LEC to an ELAN, the LEC is not allowed to join the ELAN. |
To specify the LES/BUS for an ELAN, perform this task:
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Note The LES/BUSs are not fully operational until one or more LECs are configured and the LECS database is configured and bound to the ATM module interface. |
This example shows how to specify the LES/BUS for an ELAN and verify the configuration:
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.1 ATM(config-subif)#lane server-bus ethernet default ATM(config-subif)#interface atm0.2 ATM(config-subif)#lane server-bus ethernet Eng_ELAN ATM(config-subif)#^Z ATM#show lane server LE Server ATM0.1 ELAN name: default Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.01 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected LE Server ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.02 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected ATM#
LECs serve to pass traffic between VLANs on the Catalyst switches and ELANs in the ATM network. You can configure one or more LECs for one or more ELANs on the ATM modules.
Before you set up a LEC on the ATM module, you must configure a VLAN on the switch and the LES/BUS for an ELAN on an ATM module subinterface. When you configure a LEC on the ATM module, you map a VLAN on the Catalyst 5000 or 6000 family switch to an ATM ELAN. For information on configuring VLANs on the Catalyst 5000 or 6000 family supervisor engine, see the Configuration Guide for your switch. For information on configuring the LES/BUS for an ELAN, see the "Setting Up the LES/BUS for an ELAN" section.
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Note Using the VLAN Trunk Protocol (VTP), you can cause LECs to be created automatically when you configure VLANs on the Catalyst 5000 family supervisor engine. For more information on using VTP to create LECs automatically, see the "Creating LECs Automatically Using VTP" section. |
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Note If you later want to associate a LEC with a different ELAN, change the LECS database configuration before you change the LEC configuration on the subinterface. For information on configuring the LECS database, see the "Configuring the LECS Database" section. |
To set up a LEC for an ELAN, perform this task:
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Note The LECs do not come up until the LES/BUSs are configured and the LECS database is configured and bound to the ATM module interface. |
This example shows how to configure LECs and verify the configuration:
ATM#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
ATM(config)#interface atm0.1
ATM(config-subif)#lane client ethernet 1 default
ATM(config-subif)#interface atm0.2
ATM(config-subif)#lane client ethernet 2 Eng_ELAN
ATM(config-subif)#^Z
ATM#show lane client
LE Client ATM0.1 ELAN name: default Admin: up State: initialState
Client ID: unassigned Next join attempt in 0 seconds
Join Attempt: 4
Last Fail Reason: Config VC being released
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 1
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.01
VCD rxFrames txFrames Type ATM Address
0 0 0 configure 47.007900000000000000000000.00A03E000001.00
0 0 0 direct 00.000000000000000000000000.000000000000.00
0 0 0 distribute 00.000000000000000000000000.000000000000.00
0 0 0 send 00.000000000000000000000000.000000000000.00
0 0 0 forward 00.000000000000000000000000.000000000000.00
LE Client ATM0.2 ELAN name: Eng_ELAN Admin: up State: initialState
Client ID: unassigned Next join attempt in 1 seconds
Join Attempt: 2
Last Fail Reason: Config VC being released
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 2
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.02
VCD rxFrames txFrames Type ATM Address
0 0 0 configure 47.007900000000000000000000.00A03E000001.00
VCD rxFrames txFrames Type ATM Address
0 0 0 direct 00.000000000000000000000000.000000000000.00
0 0 0 distribute 00.000000000000000000000000.000000000000.00
0 0 0 send 00.000000000000000000000000.000000000000.00
0 0 0 forward 00.000000000000000000000000.000000000000.00
ATM#
The LECS database contains LANE configuration information, including ELAN name-to-LES/BUS ATM address mappings, LEC address-to-ELAN name mappings, and the name of the default ELAN, if specified. You must configure at least one LECS database in the ATM LANE network.
These sections describe how to set up the LECS database on the ATM module:
When you configure a Catalyst 5000 family ATM module as the LECS for one default ELAN, you provide a name for the database, the ATM address of the LES/BUS for the ELAN, and the name of the default ELAN.
The default ELAN cannot be a restricted-membership ELAN. You do not need to specify the ATM or MAC addresses of the LECs for the default ELAN.
On the dual PHY ATM modules, you must configure redundant LES/BUS/LECS, one for each PHY.
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Note Before beginning the LECS database configuration, make sure you have configured the LES/BUS and LEC for the default ELAN (see the "Setting Up the LES/BUS for an ELAN" section and the "Setting Up a LEC for an ELAN" section). |
To set up the LECS for one default ELAN, perform this task:
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Note After you configure the LECS database, you must bind the LECS database to the major ATM interface (ATM0) on the ATM module. For information on how to bind the database to the interface, see the "Binding the LECS to the ATM Interface" section. |
This example shows how to display the ATM address of the LES/BUS of the default ELAN, how to configure the LECS database for the default ELAN, and how to verify the configuration:
ATM#show lane server LE Server ATM0.1 ELAN name: default Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.01 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database LANE_Backbone ATM(lane-config-database)#name default server-atm-address 47.00918100000000E04FACB401.00100DAACC41.01 ATM(lane-config-database)#default-name default ATM(lane-config-database)#^Z ATM#show lane database LANE Config Server database table 'LANE_Backbone' default elan: default elan 'default': un-restricted server 47.00918100000000E04FACB401.00100DAACC41.01 (prio 0) ATM#
When you configure unrestricted-membership ELANs in the LECS database, you create database entries that link the name of each ELAN to the ATM address of its LES/BUS. With unrestricted-membership ELANs, you do not need to specify the ATM or MAC addresses of the LECs for each ELAN. If desired, you can specify a default ELAN for LECs not bound to an ELAN explicitly.
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Note Before beginning the LECS database configuration, make sure you have configured a LES/BUS and LEC for each ELAN (see the "Setting Up the LES/BUS for an ELAN" section and the "Setting Up a LEC for an ELAN" section). |
To configure unrestricted-membership ELANs in the LECS database, perform this task:
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Note After you configure the LECS database, you must bind the LECS database to the major ATM interface (ATM0) on the ATM module. For information on how to bind the database to the interface, see the "Binding the LECS to the ATM Interface" section. |
This example shows how to display the ATM address of the LES/BUSs for all ELANs, how to configure the LECS database for each ELAN, how to specify a default ELAN, and how to verify the configuration:
ATM#show lane server LE Server ATM0.1 ELAN name: default Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.01 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected LE Server ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.02 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected LE Server ATM0.3 ELAN name: Mktg_ELAN Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.03 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database LANE_Backbone ATM(lane-config-database)#name default server-atm-address 47.00918100000000E04FACB401.00100DAACC41.01 ATM(lane-config-database)#name Eng_ELAN server-atm-address 47.00918100000000E04FACB401.00100DAACC41.02 ATM(lane-config-database)#name Mktg_ELAN server-atm-address 47.00918100000000E04FACB401.00100DAACC41.03 ATM(lane-config-database)#default-name default ATM(lane-config-database)#^Z ATM#show lane database LANE Config Server database table 'LANE_Backbone' default elan: default elan 'default': un-restricted server 47.00918100000000E04FACB401.00100DAACC41.01 (prio 0) elan 'Eng_ELAN': un-restricted server 47.00918100000000E04FACB401.00100DAACC41.02 (prio 0) elan 'Mktg_ELAN': un-restricted server 47.00918100000000E04FACB401.00100DAACC41.03 (prio 0) ATM#
When you configure restricted-membership ELANs in the LECS database, you create database entries that link the name of each ELAN to the ATM address of its LES/BUS. In addition, you must specify the ATM or MAC addresses of the LECs belonging to each ELAN. If desired, you can specify a default ELAN for LECs not bound to an ELAN explicitly. The default ELAN must be an unrestricted-membership ELAN.
If there are LECs for a given restricted-membership ELAN configured on multiple Catalyst 5000 family ATM modules, you must bind the ATM or MAC address of each LEC explicitly with the name of that ELAN using the client-atm-address database configuration command. For example, if you configure three LECs for a particular restricted-membership ELAN on three different ATM modules, you must configure three LECS database entries, one entry for each LEC. Each entry binds the ATM or MAC address of each LEC to the restricted-membership ELAN.
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Note Before beginning the LECS database configuration, make sure you have configured a LES/BUS and LEC for each ELAN (see the "Setting Up the LES/BUS for an ELAN" section and the "Setting Up a LEC for an ELAN" section). |
To configure restricted-membership ELANs in the LECS database, perform this task:
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Note After you configure the LECS database, you must bind the LECS database to the major ATM interface (ATM0) on the ATM module. For information on how to bind the database to the interface, see the "Binding the LECS to the ATM Interface" section. |
This example shows how to display the ATM address of the LES/BUSs and LECs, how to configure the LECS database for restricted-membership ELANs, how to specify a default ELAN, and how to verify the configuration:
ATM#show lane server
LE Server ATM0.1 ELAN name: default Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.01
LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected
LE Server ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.02
LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected
LE Server ATM0.3 ELAN name: Mktg_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.03
LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected
ATM#show lane client brief
LE Client ATM0.1 ELAN name: default Admin: up State: initialState
Client ID: unassigned Next join attempt in 38 seconds
Join Attempt: 121
Last Fail Reason: Config VC being released
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 1
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.01
LE Client ATM0.2 ELAN name: Eng_ELAN Admin: up State: initialState
Client ID: unassigned Next join attempt in 60 seconds
Join Attempt: 90
Last Fail Reason: Config VC being released
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 2
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.02
LE Client ATM0.3 ELAN name: Mktg_ELAN Admin: up State: initialState
Client ID: unassigned Next join attempt in 39 seconds
Join Attempt: 89
Last Fail Reason: Config VC being released
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 3
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.03
ATM#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
ATM(config)#lane database LANE_Backbone
ATM(lane-config-database)#name Eng_ELAN server-atm-address 47.00918100000000E04FACB401.00100DAACC41.02 restricted
ATM(lane-config-database)#name Mktg_ELAN server-atm-address 47.00918100000000E04FACB401.00100DAACC41.03 restricted
ATM(lane-config-database)#client-atm-address 47.00918100000000E04FACB401.00100DAACC40.02 name Eng_ELAN
ATM(lane-config-database)#client-atm-address 47.00918100000000E04FACB401.00100DAACC40.03 name Mktg_ELAN
ATM(lane-config-database)#name default server-atm-address 47.00918100000000E04FACB401.00100DAACC41.01
ATM(lane-config-database)#default-name default
ATM(lane-config-database)#^Z
The show lane database command displays the database configuration:
ATM#show lane database
LANE Config Server database table 'LANE_Backbone'
default elan: default
elan 'Eng_ELAN': restricted
server 47.00918100000000E04FACB401.00100DAACC41.02 (prio 0)
atm client 47.00918100000000E04FACB401.00100DAACC40.02
elan 'Mktg_ELAN': restricted
server 47.00918100000000E04FACB401.00100DAACC41.03 (prio 0)
atm client 47.00918100000000E04FACB401.00100DAACC40.03
elan 'default': un-restricted
server 47.00918100000000E04FACB401.00100DAACC41.01 (prio 0)
ATM#
Before LANE communication can occur, you must bind the LECS database to the major interface on the ATM module.
To bind the LECS database to the ATM module interface, perform this task:
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This example shows how to bind the autogenerated LECS ATM address and the LECS database to the major ATM interface and how to verify the configuration:
ATM#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
ATM(config)#interface atm0
ATM(config-if)#lane config auto-config-atm-address
ATM(config-if)#lane config database LANE_Backbone
ATM(config-if)#^Z
ATM#show lane config
LE Config Server ATM0 config table: LANE_Backbone
Admin: up State: operational
LECS Mastership State: active master
list of global LECS addresses (58 seconds to update):
47.00918100000000E04FACB401.00100DAACC43.00 <-------- me
ATM Address of this LECS: 47.00918100000000E04FACB401.00100DAACC43.00 (auto)
vcd rxCnt txCnt callingParty
5 0 0 47.00918100000000E04FACB401.00100DAACC41.03 LES Mktg_ELAN 0
active
6 0 0 47.00918100000000E04FACB401.00100DAACC41.02 LES Eng_ELAN 0
active
11 1 1 47.00918100000000E04FACB401.00100DAACC41.01 LES default 0
active
cumulative total number of unrecognized packets received so far: 0
cumulative total number of config requests received so far: 3
cumulative total number of config failures so far: 1
cause of last failure: no configuration
culprit for the last failure: 47.00918100000000E04FACB401.00E04FACB070.04
ATM#
LECs that are FSSRP aware have virtual circuits established to every single LES/BUS in the ELAN. Because virtual circuit connections already exist between all LECs and LES/BUS pairs in the ELAN, the LECs can switch over to another LES/BUS pair without any noticable delay should a failure occur.
When you configure more than one LES/BUS pair for an ELAN, one LES/BUS takes precedence over others based on the order in which they are entered into the LECS database.
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Note Redundant LES/BUSs pairs for a single ELAN should be configured on different ATM LANE modules in the LANE network for maximum fault tolerance. |
Configuring redundant LES/BUS pairs for an ELAN is a two-part process:
To configure the LES/BUS pairs, perform the following task:
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Note The LES/BUSs are not fully operational until one or more LECs are configured and the LECS database is configured and bound to the ATM module interface. |
This example shows how to specify the LES/BUS for an ELAN and verify the configuration:
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.1 ATM(config-subif)#lane server-bus ethernet default ATM(config-subif)#interface atm0.2 ATM(config-subif)#lane server-bus ethernet Eng_ELAN ATM(config-subif)#^Z ATM#show lane server LE Server ATM0.1 ELAN name: default Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.01 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected LE Server ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.02 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected ATM#
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Note To add the redundant LES/BUS pairs to the LECS, perform this task: |
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This example shows how to display the ATM address of the LES/BUS of the default ELAN, how to configure the LECS database for the default ELAN, and how to verify the configuration:
ATM#show lane server LE Server ATM0.1 ELAN name: default Admin: up State: operational type: ethernet Max Frame Size: 1516 ATM address: 47.00918100000000E04FACB401.00100DAACC41.01 LECS used: 47.007900000000000000000000.00A03E000001.00 NOT yet connected ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database LANE_Backbone ATM(lane-config-database)#name default server-atm-address 47.00918100000000E04FACB401.00100DAACC41.01 ATM(lane-config-database)#default-name default ATM(lane-config-database)#^Z ATM#show lane database LANE Config Server database table 'LANE_Backbone' default elan: default elan 'default': un-restricted server 47.00918100000000E04FACB401.00100DAACC41.01 (prio 0)
After configuring LANE components on the LANE module, you can display a variety of information on their status. To show LANE information, perform any of these tasks in user EXEC or privileged EXEC mode:
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This example shows how to display brief information on all configured LANE components:
ATM#show lane brief
LE Server ATM0.1 ELAN name: default Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.01
LECS used: 47.00918100000000E04FACB401.00100DAACC43.00 connected, vcd 12
control distribute: vcd 19, 3 members, 27723 packets
LE BUS ATM0.1 ELAN name: default Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC42.01
data forward: vcd 23, 3 members, 174529 packets, 0 unicasts
LE Client ATM0.1 ELAN name: default Admin: up State: operational
Client ID: 1 LEC up for 15 hours 9 minutes 47 seconds
Join Attempt: 140
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 1
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.01
LE Config Server ATM0 config table: LANE_Backbone
Admin: up State: operational
LECS Mastership State: active master
list of global LECS addresses:
47.00918100000000E04FACB401.00100DAACC43.00
ATM Address of this LECS: 47.00918100000000E04FACB401.00100DAACC43.00 (auto)
LE Server ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.02
LECS used: 47.00918100000000E04FACB401.00100DAACC43.00 connected, vcd 8
control distribute: vcd 31, 1 members, 27287 packets
LE BUS ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC42.02
data forward: vcd 35, 1 members, 28190 packets, 0 unicasts
LE Client ATM0.2 ELAN name: Eng_ELAN Admin: up State: operational
Client ID: 1 LEC up for 15 hours 9 minutes 34 seconds
Join Attempt: 109
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 2
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.02
LE Server ATM0.3 ELAN name: Mktg_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC41.03
LECS used: 47.00918100000000E04FACB401.00100DAACC43.00 connected, vcd 7
control distribute: vcd 54, 1 members, 27250 packets
LE BUS ATM0.3 ELAN name: Mktg_ELAN Admin: up State: operational
type: ethernet Max Frame Size: 1516
ATM address: 47.00918100000000E04FACB401.00100DAACC42.03
data forward: vcd 58, 1 members, 28152 packets, 0 unicasts
LE Client ATM0.3 ELAN name: Mktg_ELAN Admin: up State: operational
Client ID: 1 LEC up for 15 hours 8 minutes 20 seconds
Join Attempt: 109
HW Address: 0010.0daa.cc40 Type: ethernet Max Frame Size: 1516
VLANID: 3
ATM Address: 47.00918100000000E04FACB401.00100DAACC40.03
When you create and modify VLANs on a Catalyst 5000 or 6000 family switch that belongs to a VTP domain, VTP automatically distributes VLAN configuration information over trunk links to all devices in the VTP domain. VTP is transmitted on all trunk connections, including ATM LANE.
By default, VTP is disabled on the ATM modules. When you enable VTP on an ATM module, you can have ATM modules automatically create LECs for VLANs created on the Catalyst 5000 or 6000 family switch.
You can use VTP to set up LECs in both VTP transparent and nontransparent (server or client) mode. If the Catalyst 5000 or 6000 family switch is in VTP transparent mode, configuring a VLAN creates LECs on ATM modules installed only in the switch on which you configured the VLAN.
If the Catalyst 5000 or 6000 family switch is in VTP server mode, configuring a VLAN creates LECs on all ATM modules on all Catalyst 5000 or 6000 family switches in the same VTP domain (both clients and servers).
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Note You might need to reload the ATM module after you configure VTP for the VTP creation of LECs to take effect. |
Automatic creation of LECs using VTP is supported in Catalyst 5000 family software release 2.1 or later with ATM module software release 3.1 or later.
This procedure describes how to configure the Catalyst 5000 and 6000 families of switches and the ATM module so that when you create a VLAN on the switch, LECs are created on all ATM modules in all switches in the VTP domain (in VTP transparent mode, only ATM modules on the local switch are affected):
Every switch with an ATM module on which you want LECs created automatically must belong to the same VTP domain. For information on configuring VTP, see the Software Configuration Guide for your switch.
Step 2 Enable VTP on the ATM module.
You must enable VTP on every ATM module on which you want LECs created automatically. For information on enabling VTP on the ATM module, see the "Using VTP to Create LECs Automatically".
Step 3 Configure at least one LES/BUS for each VLAN/ELAN you will configure.
VTP cannot create the LECs automatically unless one or more LES/BUSs are configured for each VLAN/ELAN. The ELAN name for VLAN 1 must be "default." For information on configuring the LES/BUS, see the "Setting Up the LES/BUS for an ELAN" section.
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Note VTP does not create or configure the LES/BUS for VLANs/ELANs. |
Step 4 Configure the LECS database with ELAN name-to-LES/BUS mappings for all VLANs/ELANs you will configure.
VTP does not create or configure the LECS database. Use the name of the VTP domain configured on the Catalyst 5000 or 6000 family switch as the LECS database name. VTP cannot create the LECs automatically unless the LECS database is configured properly. LECs can be created automatically by VTP only in unrestricted-membership ELANs. In addition, the ELAN name for VLAN 1 must be "default." For information on configuring the LECS database, see the "Configuring the LECS Database" section.
Step 5 Bind the LECS database to the ATM interface on the ATM module.
For information on binding the LECS database to the ATM interface, see the "Binding the LECS to the ATM Interface" section.
Step 6 At the Catalyst 5000 or 6000 family switch CLI, create the desired VLANs.
Ensure that the VLAN name matches the ELAN name configured in the LECS database on the ATM module. The name for VLAN 1 is "default" and cannot be changed. The corresponding ELAN name on the ATM module must be "default" also.
For VTP to successfully set up LECs on all ATM modules in the ATM LANE network, the default VLAN/ELAN must be operational on the ATM modules, and Catalyst 5000 or 6000 family switches and must be named "default." If you currently have a different ELAN name mapped to VLAN 1, you must change the ELAN name to "default" in the LECS database.
When you enter the set vlan command without specifying the VLAN name, the VLAN names listed in Default ELAN Names are used by default.
| VLAN Number | ELAN Name |
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1 | default |
2 | VLAN0002 |
3 | VLAN0003 |
4 | VLAN0004 |
5 | VLAN0005 |
...1005 | ...VLAN1005 |
For information on configuring VLANs, see the Software Configuration Guide for
your switch.
These sections show examples of how to configure ATM LANE on a Catalyst 5000 or 6000 family ATM module:
Figure 3-3Figure 3-3 shows a configuration of two Catalyst 5000 family switches (Catalyst 5000 family Switch 1 and Catalyst 5000 family Switch 2) and a LightStream 1010 ATM switch.
In example Configuration 1, these assumptions apply:
| VLAN Number | ELAN Name |
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1 | default |
2 | VLAN0002 |
3 | VLAN0003 |
4 | VLAN0004 |
To set up LANE on the configuration in , perform these steps:
The LightStream 1010 ATM switch provides a default prefix.
Step 2 Start a session to the ATM module by entering the session 4 command.
Console> session 4 Trying ATM-4... Connected to ATM-4. Escape character is '^]'. ATM>
Step 3 Obtain the LES and LES/BUS addresses for later use by entering the enable command (to enable configuration mode) and the show lane default command at the ATM prompt.
ATM>enable ATM# ATM#show lane default interface ATM0: LANE Client: 47.0091810000000061705b7701.00400BFF0010.** LANE Server: 47.0091810000000061705b7701.00400BFF0011.** LANE Bus: 47.0091810000000061705b7701.00400BFF0012.** LANE Config Server: 47.0091810000000061705b7701.00400BFF0013.00 ATM#
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Note The two asterisks (**) represent the subinterface number byte in hexadecimal. |
Step 4 Using the LECS address obtained in Step 3, set the address of the default LECS in the LightStream 1010 switch by entering the configure terminal and atm lecs-address atm_address commands on the console of the LightStream 1010 switch.
Switch> enable Switch# Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#atm lecs-address 47.0091810000000061705b7701.00400BFF0013.00 1 Switch(config)#end Switch#
The commands shown in this step configure the LECS address in the switch. The LECS ATM NSAP address is 47.0091810000000061705b7701.00400BFF0013.00. The sequence number of this LECS address, which is 1, indicates that it is the first LECS in this switch.
Step 5 Save the configuration as follows:
ATM#write memory
Step 6 Start up a LES/BUS pair on Catalyst 5000 family Switch 1 by entering the interface atm0 and the lane server-bus ethernet default commands in configuration mode.
On the console of Catalyst 5000 family switch 1, enter these commands:
ATM#config terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-subif)#lane server-bus ethernet default ATM(config-subif)#end ATM#
The commands shown in this step start a LES/BUS pair. The ELAN name is default, and the interface on which this LES/BUS pair is configured is atm0.
Step 7 Save the configuration as follows:
ATM#write memory
Step 8 Set up the LECS database on the Catalyst 5000 family switch 1.
Enter the LANE server address obtained in Step 3 and replace the ** with the subinterface number of the interface in which the LES/BUS is to be configured. In this example, that number is 00. Enter the lane database database_name command, the name elan_name server-atm-address atm_address command, and the default-name elan_name commands at the ATM prompt.
ATM#config terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database test ATM(lane-config-database)#name default server-atm-address 47.0091810000000061705b7701.00400BFF0011.00 ATM(lane-config-database)#default-name default ATM(lane-config-database)#end ATM#
The commands shown in this step create the LECS database. The database name is test. The ELAN name is default. The LES ATM NSAP address is 47.0091810000000061705b7701.00400BFF0011.00.
Step 9 Save the configuration as follows:
ATM#write memory
Step 10 Start and bind the LECS on the Catalyst 5000 family switch 1 by entering the interface atm0 command, the lane config database database_name command, and the lane config auto-config-atm-address command at the ATM prompt.
ATM#config terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-if)#lane config database test ATM(config-if)#lane config auto-config-atm-address ATM(config-if)#end ATM#
The commands shown in this step start the LECS. The database name to use is test. The interface on which the LECS is configured is atm0.
Step 11 Save the configuration as follows:
ATM#write memory
Step 12 Start the LEC on the Catalyst 5000 family switches 1 and 2 by entering the interface atm0.1 command and the lane client ethernet 1 default command in configuration mode on the consoles of switches 1 and 2. The interface on which the LEC is configured is atm0.1. The ELAN name is default, and it is configured to emulate Ethernet.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.1 ATM(config-subif)#lane client ethernet 1 default ATM(config-subif)#end ATM#
Step 13 Save the configuration as follows:
ATM#write memory
Step 14 Create a LES/BUS pair on Catalyst 5000 family switch 1 for VLAN 2 by entering the interface atm0.2 command and the lane server-bus ethernet VLAN0002 command in configuration mode.
ATM#config terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config-subif)#interface atm0.2 ATM(config-subif)#lane server-bus ethernet VLAN0002 ATM(config-subif)#end ATM#
Step 15 Save the configuration as follows:
ATM#write memory
Step 16 Configure the address of the new LES/BUS pair in the LECS database on Catalyst 5000 family Switch 1 by entering the lane database test command and the name VLAN0002 server-atm-address atm_address command in configuration mode.
ATM#configure terminal ATM(config)#lane database test ATM(lane-config-database)#name VLAN0002 server-atm-address 47.0091810000000061705b7701.00400BFF0011.02 ATM(lane-config-database)#end ATM#
Step 17 Save the configuration as follows:
ATM#write memory
Step 18 Start the new LEC on Catalyst 5000 family switch 2 by entering the interface atm0.2 command and the lane client ethernet 2 VLAN0002 command in configuration mode.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.2 ATM(config-subif)#lane client ethernet 2 VLAN0002 ATM(config-subif)#end ATM#
Step 19 Save the configuration as follows:
ATM#write memory
Figure 3-4 shows three Catalyst 5000 family switches (Catalyst 5000 family Switch 1, Switch 2, and Switch 3) and a LightStream 1010 ATM switch. LES/BUS/LECS redundancy is configured. Switches 1 and 2 both have one LES/BUS/LECS for every ELAN. Switch 1 is the master server, and Switch 2 is the backup server. If Switch 1 fails, Switch 2 provides the LES/BUS/LECS components of the ELAN. When switch 1 recovers, it becomes the master server again.
In Figure 3-4Figure 3-4, these assumptions apply:
To set up the configuration in Figure 3-4, perform these steps:
The LightStream 1010 ATM switch provides a default prefix.
Step 2 Establish a connection with the ATM module from switch 1 by entering the session command.
Console> session 4 Trying ATM-4... Connected to ATM-4. Escape character is '^]'.
Step 3 Obtain the LES and LES/BUS addresses for later use by entering the show lane default command.
ATM>show lane default interface ATM0: LANE Client: 47.0091810000000061705b7701.00400BFF0010.** LANE Server: 47.0091810000000061705b7701.00400BFF0011.** LANE Bus: 47.0091810000000061705b7701.00400BFF0012.** LANE Config Server: 47.0091810000000061705b7701.00400BFF0013.00 ATM>
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Note The two asterisks (**) represent the subinterface number byte displayed in hexadecimal. |
Step 4 Establish a connection to the ATM module from switch 2 by entering the session command.
Console> session 4 Trying ATM-4... Connected to ATM-4. Escape character is '^]'.
Step 5 Obtain the LES and LES/BUS addresses for later use by entering the show lane default command from privileged mode.
ATM> ATM>enable ATM# ATM#show lane default interface ATM0: LANE Client: 47.0091810000000061705b7701.00400B583040.** LANE Server: 47.0091810000000061705b7701.00400B583041.** LANE Bus: 47.0091810000000061705b7701.00400B583042.** LANE Config Server: 47.0091810000000061705b7701.00400B583043.00 ATM#
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Note The two asterisks (**) represent the subinterface number byte displayed in hexadecimal. |
Step 6 Set up the LECS database on switches 1 and 2. Enter the LES addresses obtained in Steps 3 and 5 and replace the two asterisks (**) with the subinterface numbers of the interfaces in which the LES/BUS is to be configured. In this example, that number is 00. Enter the lane database database-name command, the name elan_name server-atm-address atm_address command, and the default-name elan_name commands in configuration mode on both switch 1 and switch 2.
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Note The order of the entries is critical and should be the same on both the primary and secondary Catalyst 5000 family switches for this configuration to work effectively. |
Enter the following commands:
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database test ATM(lane-config-database)#name default server-atm-address 47.0091810000000061705b7701.00400BFF0011.00 ATM(lane-config-database)#name default server-atm-address 47.0091810000000061705b7701.00400B583041.00 ATM(lane-config-database)#default-name default ATM(lane-config-database)#end ATM#
In this example, the name of the database is test. The name of the ELAN is default. The first entry is the primary LES. The second entry is the backup LES. The primary LES ATM NSAP address is 47.0091810000000061705b7701.00400BFF0011.00. The backup LES ATM NSAP address is 47.0091810000000061705b7701.00400B583041.00.
Step 7 Save the configuration as follows:
ATM#write memory
Step 8 Start and bind the LECS on both the Catalyst 5000 family switches 1 and 2 by entering the interface atm0 command, the lane config database database_name command, and the lane config auto-config-atm-address command in configuration mode on both switch 1 and switch 2.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-if)#lane config test ATM(config-if)#lane config auto-config-atm-address ATM(config-if)#end ATM#
In this example, the database name is test and the interface on which the LECS is configured is atm0.
Step 9 Save the configuration as follows:
ATM#write memory
Step 10 Start up a LES/BUS pair on switch 1 and switch 2 by entering the interface atm0 command and the lane server-bus ethernet default command on the consoles of switch 1 and switch 2.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-subif)#lane server-bus ethernet default ATM(config-subif)#end ATM#
In this example, the ELAN name is default and the interface on which this LES/BUS pair is configured is atm0.
Step 11 Save the configuration as follows:
ATM#write memory
Step 12 Set the LECS addresses on switches 1 and 2 in the ATM switch by entering the atm lecs-address atm_address command in configuration mode on the console of the LightStream 1010 switch for each Catalyst 5000 family switch.
These commands configure the address of the primary and the backup LECSs in the ATM switch, in the order presented on the screen. Enter the LANE configuration server address obtained in Steps 3 and 5.
ATM>enable ATM#config terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#atm lecs-address 47.0091810000000061705b7701.00400BFF0013.00 1 ATM(config)#atm lecs-address 47.0091810000000061705b7701.00400B583043.00 2 ATM(config)#end ATM#
Step 13 Save the configuration as follows:
ATM#write memory
Step 14 Start the LEC on switches 1, 2, and 3 by entering the interface atm0.1 command and the lane client ethernet 1 default command in configuration mode on the consoles of switches 1, 2, and 3.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.1 ATM(config-subif)#lane client ethernet 1 default ATM(config-subif)#end ATM#
The interface on which the LEC is configured is atm0.1. The ELAN name is default, and it is configured to emulate Ethernet.
Step 15 Save the configuration as follows:
ATM#write memory
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Note To use VTP to create the LEC, see the "Creating LECs Automatically Using VTP" section. |
Step 16 Create a LES/BUS pair on switches 1 and 2 for VLAN 2. Enter the interface atm0.2 command and the lane server-bus ethernet VLAN 0002 command in configuration mode on the consoles of Switches 1 and 2.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config-subif)#interface atm0.2 ATM(config-subif)#lane server-bus ethernet VLAN0002 ATM(config-subif)#end ATM#
Step 17 Save the configuration as follows:
ATM#write memory
Step 18 Configure the address of the new LES/BUS pair in the LECS database on switch 1:
ATM#configure terminal ATM(config)#lane database test ATM(lane-config-database)#name VLAN0002 server-atm-address 47.0091810000000061705b7701.00400BFF0011.02 ATM(lane-config-database)#name VLAN0002 server-atm-address 47.0091810000000061705b7701.00400B583041.02 ATM(lane-config-database)#end ATM#
Step 19 Save the configuration as follows:
ATM#write memory
Step 20 Start the new LEC on switch 3 by entering the interface atm0.2 command and the lane client ethernet 2 VLAN0002 command on the console of switch 3.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.2 ATM(config-subif)#lane client ethernet 2 VLAN0002 ATM(config-subif)#end ATM#
Step 21 Save the configuration as follows:
ATM#write memory
Figure 3-5Figure 3-5 shows two ATM switches in an ATM cloud. ATM switch 1 is connected to two Catalyst 5000 family switches (Catalyst 5000 family switch 1 and Catalyst 5000 family switch 2), which have ATM dual PHY modules. ATM switch 2 is also connected to Catalyst 5000 family switch 1 and Catalyst 5000 family switch 2. If PHY A on Catalyst 5000 family switch 1 is lost, data continues to flow to Catalyst 5000 family switch 2 on PHY B, showing dual PHY redundancy.
In Figure 3-5Figure 3-5, these assumptions apply:
To set up LANE on the configuration in Figure 3-5, perform these steps:
The LightStream 1010 ATM switch provides a default prefix.
Step 2 Establish a connection to the ATM module by entering the session command at the Catalyst 5000 family switch console prompt.
Console> session 4 Trying ATM-4... Connected to ATM-4. Escape character is '^]'.
Step 3 Obtain the LECS and LES/BUS addresses for later use by entering the show lane default command in privileged mode at the ATM prompt.
ATM>enable ATM# ATM#show lane default interface ATM0: LANE Client: 47.0091810000000061705b7701.00400BFF0010.** LANE Server: 47.0091810000000061705b7701.00400BFF0011.** LANE Bus: 47.0091810000000061705b7701.00400BFF0012.** LANE Config Server: 47.0091810000000061705b7701.00400BFF0013.00 ATM#
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Note The two asterisks (**) represent the subinterface number byte displayed in hexadecimal. |
Step 4 Access path B by entering the interface atm0 and the atm preferred phy B commands in configuration mode.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-subif)#atm preferred phy B ATM(config-subif)#end ATM#
Wait for approximately one minute while the PHY B comes up.
Step 5 Enter the show lane default command. The two asterisks (**) represent the subinterface number byte displayed in hexadecimal.
ATM#show lane default interface ATM0: LANE Client: 47.0091810000000061705b8301.00400BFF0010.** LANE Server: 47.0091810000000061705b8301.00400BFF0011.** LANE Bus: 47.0091810000000061705b8301.00400BFF0012.** LANE Config Server: 47.0091810000000061705b8301.00400BFF0013.00 ATM#
Step 6 Return to PHY A by entering the interface atm0 and the atm preferred phy A commands in configuration mode.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-subif)#atm preferred phy A ATM(config-subif)#end ATM#
Step 7 Set the address of the default LECS in the ATM switches by entering the addresses from Steps 3 and 5.
Enter the atm lecs-address atm_address command on the console of the LightStream 1010 switch 1. These commands configure the address of the primary and the backup LECSs in the ATM switches in the specific order entered. Only one LECS runs on the Catalyst 5000 family switch 1, but the address (the first 13 bytes) changes if PHY B is used instead of PHY A.
ATM>enable ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#atm lecs-address 47.0091810000000061705b7701.00400BFF0013.00 1 ATM(config)#atm lecs-address 47.0091810000000061705b8301.00400BFF0013.00 2 ATM(config)#end ATM#
Step 8 Save the configuration as follows:
ATM#write memory
Step 9 Enter the interface atm0 and lane server-bus ethernet default commands in configuration mode on the console of Catalyst 5000 family switch 1. These commands start a LES/BUS pair. The ELAN name is default. The interface on which this LES/BUS pair is configured is atm0.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-subif)#lane server-bus ethernet default ATM(config-subif)#end ATM#
Step 10 Save the configuration as follows:
ATM#write memory
Step 11 Configure the LECS database of the Catalyst 5000 family switch 1 by entering the lane database database_name command, the name elan_name server-atm-address atm address command, and the default-name elan_name command.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#lane database test ATM(lane-config-database)#name default server-atm-address 47.0091810000000061705b7701.00400BFF0011.00 ATM(lane-config-database)#name default server-atm-address 47.0091810000000061705b8301.00400BFF0011.00 ATM(lane-config-database)#default-name default ATM(lane-config-database)#end ATM#
Enter the LANE server addresses from Steps 3 and 5. Replace the two asterisks (**) with the subinterface number of the interface in which the LES/BUS is to be configured. In this example, the number is 00. These commands create the LECS database. The name of the database is test. The name of the ELAN is default.
The ATM NSAP address of the LES is 47.0091810000000061705b7701.00400BFF0011.00. The display in Step 3 shows this LANE BUS address.
The ATM NSAP address of the LES is 47.0091810000000061705b8301.00400BFF0011.00. The display in Step 5 shows this LANE BUS address.
Step 12 Save the configuration as follows:
ATM#write memory
Step 13 Start and bind the LECS on the Catalyst 5000 family switch 1 by entering the interface atm0 command, the lane config database database_name command, and the lane config auto-config-atm-address command in configuration mode at the ATM prompt. The database name is test. The interface on which the LECS is configured is atm0.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0 ATM(config-if)#lane config test ATM(config-if)#lane config auto-config-atm-address ATM(config-if)#end ATM#
Step 14 Save the configuration as follows:
ATM#write memory
Step 15 Start a LEC on the Catalyst 5000 family switches 1 and 2 by entering the interface atm0.1 and lane client ethernet 1 default commands in configuration mode on the consoles of each Catalyst 5000 family switch. The interface on which the LEC is configured is atm0.1. The ELAN name is default, and it is configured to emulate Ethernet.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.1 ATM(config-subif)#lane client ethernet 1 default ATM(config-subif)#end ATM#
Step 16 Save the configuration as follows:
ATM#write memory
Step 17 Create a LES/BUS pair on the Catalyst family switch 1 for VLAN 2 by entering the interface atm0.2 and lane server-bus ethernet VLAN0002 commands in configuration mode.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.2 ATM(config-subif)#lane server-bus ethernet VLAN0002 ATM(config-subif)#end ATM#
Step 18 Save the configuration as follows:
ATM#write memory
Step 19 Configure the address of the new LES/BUS pair in the LECS database on the Catalyst 5000 family switch 1 by entering the lane database database_name and name elan_name server-atm-address atm_address commands in configuration mode.
ATM#configure terminal ATM(config)#lane database test ATM(lane-config-database)#name VLAN0002 server-atm-address 47.0091810000000061705b7701.00400BFF0011.02 ATM(lane-config-database)#name VLAN0002 server-atm-address 47.0091810000000061705b8301.00400BFF0011.02 ATM(lane-config-database)#end ATM#
Step 20 Save the configuration as follows:
ATM#write memory
Step 21 Start the new LEC on the Catalyst 5000 family switch 2 by entering the interface atm0.2 and lane client ethernet 2 VLAN0002 commands in configuration mode on the console of Catalyst 5000 family Switch 2.
ATM#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ATM(config)#interface atm0.2 ATM(config-subif)#lane client ethernet 2 VLAN0002 ATM(config-subif)#end ATM#
Step 22 Save the configuration as follows:
ATM#write memory
The LANE Quality of Service (QoS) feature provides the capability to differentiate multiple classes of traffic. This is achieved by creating (multiple) VCCs with the desired QoS parameters. When the prioritised traffic is received, LANE Client forwards it on a VCC with matching QoS parameters.
Currently, LANE QoS supports the creation of Unspecified Bit Rate+ (UBR+) VCCs. A UBR+ VCC is a UBR VCC for which minimum cell rate (MCR) is guaranteed by the switch. If the switch can not guarantee the rate you have specified for the UBR+ VCC, the LANE client will revert to UBR with no MCR guarantee.
You can enable or disable the LANE QoS feature on a per LANE client basis by entering the qos option in the lane client command. The same ELAN can contain both QoS-capable and non-QoS capable LANE Clients.
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Note If a QoS VCC setup is rejected due to insufficient resources at the switch, the VCC setup falls back to UBR VCC. |
Configuring LANE QoS consists of the following steps:
The first step in configuring LANE QoS is to define a LANE QoS database using the lane qos database name command. The LANE QoS database consists of a set of mappings between CoSs values to QoS values.
Step 2 Enter the UBR+ VCC parameters for the destination NSAP address
To specify the UBR+ VCC parameters, set the Peak Cell Rate (PCR) and Minimum Cell Rate (MCR) values. Once specified, this is the guaranteed cell rate range for that UBR+ VCC.
Step 3 Apply the LANE QoS Database to a major interface or subinterface
After the database is created, you enable LANE QoS by applying the database to an interface.
To configure LANE QoS, perform the following task:
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This example shows how to configure a LANE QoS database, apply it to an interface, and verify the configuration:
ATM# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
ATM(config)# lane qos database fred
ATM(lane-qos)# atm-address 47.0091810000000061705B0C01.00E0B0951A40.0A cos 7 pcr 500000 mcr 100000
ATM(lane-qos)# exit
ATM(config)# interface atm0.2
ATM(config-subif)# lane client qos fred
ATM(config-subif)# end
ATM# show lane qos database fred
QOS: fred
configured cos values: 4-7, usage: 1
dst nsap: 47.0091810000000061705B0C01.00E0B0951A40.0A
cos: 7, pcr: 500000, mcr: 100000
Posted: Thu Aug 3 09:13:37 PDT 2000
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