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The Token Ring VLAN support on the RSM adds the capability to do multi-protocol routing and bridging for Token Ring VLANs on the RSM. The RSM can be used standalone to do interVLAN routing, or it can be paired with a Catalyst VIP2 to provide external network connections with the same port adapters used on Cisco 7500 series routers. The RSM/VIP2 combination provides routing between VLANs and Catalyst VIP2 port adapters. A complete description of the RSM can be found in the Catalyst 5000 Series Route Switch Module Installation and Configuration Note and the Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation and Configuration Note.
The Token Ring VLAN support on the RSM adds the following functionality to the Catalyst 5000 switch:
Both APPN and DLSw+ are supported for Token Ring VLANS on the RSM. However, RSRB is not supported on the RSM.
For information on how Token Ring VLANs are implemented on switches, refer to the Catalyst Token Ring Switching Implementation Guide, the Catalyst 5000 Series Token Ring Configuration Notes, the Catalyst 3900 Token Ring Switching User Guide, and the Catalyst 3920 Token Ring Switching User Guide.
A VLAN is essentially a broadcast domain. In transparent bridging, there is only one type of broadcast frame and, therefore, only one level of broadcast domain and one level of VLAN. In source routing, however, there are 2 types of broadcast frames:
Therefore, there are two levels of VLANs in a Token Ring switched network.
The first level is the Token Ring Concentrator Relay Function (TrCRF). At this level, the VLAN is a logical ring and, as such, is assigned a ring number. On a Token Ring switch, the logical ring (TrCRF) contains one or more physical ports. Source Route Switching (SRS) is used to forward frames within a TrCRF based on MAC address or Route Descriptor. On an RSM, a logical ring (TrCRF) can be defined that does not contain any physical ports, but rather is used only in processing source-routed traffic to terminate the RIF.
The second level of VLAN is the Token Ring Bridge Relay Function (TrBRF). This is the parent VLAN to which TrCRF VLANs are assigned. At this level, the VLAN is a logical bridge and, as such, is assigned a bridge number. The TrBRF is responsible for forwarding frames between groups of ports with the same ring number (TrCRFs) via either SRB or SRT.
Figure 1 depicts the relationship between TrCRF and TrBRF VLANS.
This section describes the basic operation of the RSM as it pertains to Token Ring VLANS. For a complete functional description of the RSM, refer to the Catalyst 5000 Series RSM Installation and Configuration Note.
The RSM is a router module running Cisco IOS router software that directly interfaces (plugs into) the Catalyst switch backplane. From the Token Ring VLAN perspective, the interface to the RSM is at the Token Ring bridged network (TrBRF) level. With the RSM, it is possible to route or bridge between separate Token Ring and Ethernet domains.
When routing or bridging between TrBRF VLANs that are defined as source-route bridging domains, it is necessary to create a logical ring on the RSM for proper RIF processing. This logical ring is defined as a TrCRF VLAN that does not contain any external Token Ring switch ports. Figure 2 illustrates the logical view of IP routing between two source-route bridged VLANs on the RSM. In this view, the RSM appears to have an interface to both ring 100 and ring 110.
For related information on this feature, see the following documents:
The Token Ring RSM feature is supported on the RSM in the Catalyst 5000 platform. Support for the Token Ring RSM feature was first introduced in the Cisco IOS 11.3(6)T. The Token Ring RSM feature is supported on all RSM IOS 11.3(6)T software release images. A list of the supported Cisco IOS Releases and software images are located in the "Release Notes for Catalyst 5000 Series RSM/VIP2 Cisco IOS 11.3T Software Releases" publication.
Before you configure bridging or routing for Token Ring VLAN interfaces in the RSM, configure the VLANs on the Supervisor engine module.
To configure a VLAN on the Supervisor engine module, use the following command in privileged mode:
| Command | Purpose |
|---|---|
set vlan vlan_num [name name] [state {active | suspend}] [mtu mtu] ring ring_number parent vlan_num [mode {srt | srb}] [backupcrf {off | on}] [aremaxhop hopcount] [stemaxhop hopcount] | Configure a TrCRF or TrBRF on the Supervisor engine module. |
To configure and monitor Token Ring VLAN support on the RSM, perform one or more of the following tasks:
The IP routing for Token Ring VLANs feature extends IP routing capabilities to include support for routing IP frame types in Token Ring VLAN configurations. IP can be routed between:
To configure IP routing on an RSM, use the following commands, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| ip routing | Enable IP routing on the RSM. | ||
| interface vlan vlanid type [trbrf | ethernet] | Configure a Token Ring or Ethernet interface on the RSM. | ||
| ip address ip-address mask | Set a primary IP address for an interface. |
You can configure an RSM to route source-routed traffic by creating a "pseudo-ring" to terminate the RIF path on a ring and by enabling the collection and use of RIF information.
To route source-routed traffic, use the following additional commands in interface configuration mode:
| Command | Purpose | |||
|---|---|---|---|---|
| multiring trcrf-vlan vlanid ring ring-number | Create a pseudo-ring to terminate the RIF and assign it to a VLAN. | ||
| multiring {protocol-keyword [all-routes | spanning | all | other]} | Enable collection and use of RIF information with routed protocols. |
Users with Novell NetWare environments can configure either SAP or SNAP encapsulations to be routed across VLAN boundaries.
To configure Cisco IOS software to route IPX on an RSM with connected Token Ring VLANs, use the following commands, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| Enable IPX routing globally. | |||
| interface vlan vlanid type [trbrf | ethernet] | Configure a Token Ring or Ethernet interface on the RSM. | ||
| ipx encapsulation encapsulation type | Specify the IPX encapsulation. | ||
| ipx network network number | Specify the IPX network. |
When routing source-routed traffic for specific VLANs, use the following additional commands in interface configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| multiring trcrf-vlan vlanid ring ring-number | Create a pseudo-ring to terminate the RIF and assign it to a VLAN. | ||
| multiring {protocol-keyword [all-routes | spanning | all | other]} | Enable collection and use of RIF information with routed protocols. |
To configure source-route bridging on the RSM, use the following commands, starting in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| source-bridge ring-group vring-num | Configure a virtual ring for the RSM. | ||
| interface vlan vlanid type [trbrf | ethernet] | Configure a Token Ring or Ethernet interface on the RSM. | ||
| source-bridge trcrf-vlan vlanid ring-group ring-number | Attach a TrCRF VLAN identifier to the RSM's virtual ring. |
To configure transparent bridging on the RSM, use the following command, starting in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface vlan vlanid type [trbrf | ethernet] | Configure a Token Ring or Ethernet interface on the RSM. | ||
| bridge-group bridge-group number | Specify the bridge group to which the interface belongs. |
To configure source-route translational bridging on the RSM, use the following commands, starting in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| source-bridge ring-group vring-num | Configure a virtual ring for the RSM. | ||
| source-bridge transparent ring-group pseudo-ring bridge-number tb-group [oui] | Enable bridging between transparent bridging and source-route bridging. | ||
| interface vlan vlanid type [trbrf | ethernet] | Configure a Token Ring or Ethernet interface on the RSM. | ||
| source-bridge trcrf-vlan vlanid ring-group ring-number | Assign a VLAN ID to the RSM's virtual ring. |
The automatic spanning-tree function supports automatic resolution of spanning trees in SRB networks, which provides a single path for spanning explorer frames to traverse from a given node in the network to another. Spanning explorer frames have a single-route broadcast indicator set in the routing information field. Port identifiers consist of ring numbers and bridge numbers associated with the ports. The spanning-tree algorithm for SRB does not support Topology Change Notification Bridge Protocol Data Unit (BPDU).
Although the automatic spanning-tree function can be configured with Source-Route Translational Bridging (SR/TLB), the SRB domain and transparent bridging domain have separate spanning trees. Each Token Ring interface can belong to only one spanning tree. Only one bridge group can run the automatic spanning-tree function at a time.
To create a bridge group that runs an automatic spanning-tree function compatible with the IBM SRB spanning-tree implementation, use the following command in global configuration mode:
| Command | Purpose |
|---|---|
bridge bridge-group protocol ibm | Create a bridge group that runs the automatic spanning-tree function. |
To enable the automatic spanning-tree function for a specified group of bridged interfaces in SRB or SR/TLB, use the following command in interface configuration mode:
| Command | Purpose |
|---|---|
source-bridge spanning bridge-group | Enable the automatic spanning-tree function on a group of bridged interfaces. |
You can collect, clear, and display statistical information about the network.
The Duplicate Ring Protocol (DRiP) runs on Cisco routers and switches that support switched VLAN networking and is used to identify active Token Ring VLANs (TrCRFs).
DRiP maintains the status of TrCRFs and uses this information to determine whether there are multiple TrCRFs active in a TrBRF.
DRiP information is used for the following:
DRIP conflict with CRF <vlan-id>
To show or clear DRiP or VLAN statistics, use one or all the following command in privileged EXEC mode:
| Command | Purpose |
|---|---|
Clear DRiP counters. | |
Display DRiP information. |
The following sections provide RSM and Catalyst 5000 switch configuration examples:
Following is the configuration for the RSM as shown in Figure 3:
interface TokenRing 3/1 ip address 4.4.4.1 255.255.255.0 ! interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 multiring trcrf-vlan 200 ring 100 multiring ip
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with the TrCRF VLAN 201.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ibm set vlan 200 type trcrf parent 998 ring 0x64 mode srb set vlan 201 type trcrf parent 998 ring 0x65 mode srb #add token port to trcrf 201 set vlan 201 5/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 4:
interface Ethernet 2/2 ip address 4.4.4.1 255.255.255.0 ! interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 multiring trcrf-vlan 200 ring 100 multiring all
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with TrCRF VLAN 201.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ibm set vlan 200 type trcrf parent 998 ring 0x64 mode srb set vlan 201 type trcrf parent 998 ring 0x65 mode srb #add token ring port to trcrf 201 set vlan 201 5/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 5:
interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 multiring trcrf-vlan 200 ring 100 multiring all interface vlan999 type trbrf ip address 6.6.6.1 255.255.255.0 multiring trcrf-vlan 201 ring 101 multiring all
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with TrCRF VLAN 300 and the Token Ring port 5/2 is assigned with TrCRF VLAN 301.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ibm set vlan 200 type trcrf parent 998 ring 0x64 mode srb set vlan 300 type trcrf parent 998 ring 0x66 mode srb set vlan 999 type trbrf bridge 0xe stp ibm set vlan 201 type trcrf parent 999 ring 0x65 mode srb set vlan 301 type trcrf parent 999 ring 0x67 mode srb #add token port to trcrfs set vlan 300 5/1 set vlan 301 5/2
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 6:
interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 multiring trcrf-vlan 200 ring 100 multiring all interface vlan500 type ethernet ip address 6.6.6.1 255.255.255.0
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with TrCRF VLAN 300 and the Ethernet port 2/1 is assigned with VLAN 500.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ibm set vlan 200 type trcrf parent 998 ring 0x64 mode srb set vlan 300 type trcrf parent 998 ring 0x66 mode srb #add token port to trcrf 300 set vlan 300 5/1 #add ether port to 500 set vlan 500 2/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 7:
interface TokenRing 3/1 ip address 4.4.4.1 255.255.255.0 ! interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with the TrCRF VLAN 201.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ieee set vlan 201 type trcrf parent 998 ring 0x65 mode srt #add token port to trcrf 201 set vlan 201 5/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 8:
interface Ethernet 2/2 ip address 4.4.4.1 255.255.255.0 ! interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with TrCRF VLAN 201.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ieee set vlan 201 type trcrf parent 998 ring 0x65 mode srt #add token ring port to trcrf 201 set vlan 201 5/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 9:
interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 interface vlan999 type trbrf ip address 6.6.6.1 255.255.255.0
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with VLAN 300 and the Token Ring port 5/2 is assigned with VLAN 301.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ieee set vlan 300 type trcrf parent 998 ring 0x66 mode srt set vlan 999 type trbrf bridge 0xd stp ieee set vlan 301 type trcrf parent 999 ring 0x67 mode srt #add token port to trcrfs set vlan 300 5/1 set vlan 301 5/2
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
Following is the configuration for the RSM as shown in Figure 10:
interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 ! interface vlan500 type ethernet ip address 6.6.6.1 255.255.255.0
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with TrCRF VLAN 300 and the Ethernet port 2/1 is assigned with VLAN 500.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 998 type trbrf bridge 0xd stp ieee set vlan 300 type trcrf parent 998 ring 0x66 mode srt #add token port to trcrf 300 set vlan 300 5/1 #add ether port to 500 set vlan 500 2/1
Because the VLANs are defined on a per port basis, endstations connected to ports that belong to the same VLAN should belong to the same IP subnetwork.
The following configuration refers to the RSM as shown in Figure 11:
interface TokenRing3/1 source-bridge 10 1 100 source-bridge spanning ! source-bridge ring-group 100 interface vlan999 type trbrf source-bridge trcrf-vlan 40 ring-group 100 source-bridge spanning
Following is the configuration for the Catalyst 5000 switch which performs simple SRB. In this configuration, the Token Ring switch module exists in slot 5 and is using port 1. The Token Ring port on 5/1 is assigned to TrCRF VLAN 50.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 999 name trbrf type trbrf bridge 0xe stp ibm set vlan 40 name trcrf40 type trcrf parent 999 ring 0x64 mode srb set vlan 50 name trcrf50 type trcrf parent 999 ring 0x1 mode srb #add token port to trcrf 50 set vlan 50 5/1
In this configuration, the keyword name is optional and srb is the default mode. The ring number on the switch must be specified in decimal by substituting the decring keyword for ring.
The following configuration refers to the RSM as shown in Figure 12:
source-bridge ring-group 100 ! interface vlan999 type trbrf source-bridge trcrf-vlan 40 ring-group 100 source-bridge spanning ! interface vlan998 type trbrf source-bridge trcrf-vlan 70 ring-group 100 source-bridge spanning
The following is the configuration for the Catalyst 5000 switch with the Token Ring switch module in slot 5. The Token Ring port on 5/1 is assigned to TrCRF VLAN 50 and the Token Ring port on 5/2 is assigned to TrCRF VLAN 80.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 999 name trbrf type trbrf bridge 0xe stp ibm set vlan 40 name trcrf40 type trcrf parent 999 ring 0x64 mode srb set vlan 50 name trcrf50 type trcrf parent 999 ring 0x1 mode srb set vlan 998 name trbrf type trbrf bridge 0xd stp ibm set vlan 70 name trcrf70 type trcrf parent 998 ring 0x64 mode srb set vlan 80 name trcrf80 type trcrf parent 998 ring 0x2 mode srb #add token port to trcrf 50 set vlan 50 5/1 #add token port to trcrf 80 set vlan 80 5/2
In this configuration, the keyword name is optional and srb is the default mode.
The following is the configuration for the RSM as shown in Figure 13:
bridge 1 protocol ieee
! interface tokenring0 bridge-group 1 interface vlan 50 type trbrf bridge-group 1
The following is the configuration for the Catalyst 5000 switch with a Token Ring switch module in slot 5:
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 50 name trbrf50 type trbrf bridge 0xb stp ieee set vlan 100 name trcrf100 type trcrf ring 0x64 parent 50 mode srt #add token port to trcrf 100 set vlan 100 5/14
The following is the configuration for the RSM as shown in Figure 14:
source-bridge ring-group 100 bridge 1 protocol ieee source-bridge transparent 100 200 10 1 ! interface vlan999 type trbrf source-bridge trcrf-vlan 20 ring-group 100 source-bridge spanning ! interface ethernet1/0 bridge-group 1
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port on 2/1 is assigned to VLAN 21.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 999 type trbrf bridge 0xd stp ibm set vlan 20 type trcrf parent 999 ring 0x64 mode srb set vlan 21 type trcrf parent 999 ring 0x65 mode srb #add token ring port to trcrf 21 set vlan 21 2/1
The following is the configuration for the RSM as shown in Figure 15:
source-bridge ring-group 100 bridge 1 protocol ieee source-bridge transparent 100 200 10 1 ! interface vlan999 type trbrf source-bridge trcrf-vlan 20 ring-group 100 source-bridge spanning ! interface vlan100 type ethernet bridge-group 1
The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port on 5/1 is assigned to TrCRF 21, and the Ethernet port on 2/1 is assigned to VLAN 100.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 999 type trbrf bridge 0xd stp ibm set vlan 20 type trcrf parent 999 ring 0x64 mode srb set vlan 21 type trcrf parent 999 ring 0x65 mode srb #add token port to trcrf 21 set vlan 21 5/1 #add ethernet set vlan 100 type ethernet set vlan 100 2/1
The following is the configuration for the RSM with a VIP2 serial interface as shown in Figure 16:
source-bridge ring-group 100 dlsw local-peer peer-id 10.18.20.8 dlsw remote-peer 0 tcp 10.18.20.6 ! interface Serial1/0 ip address 10.18.20.8 255.255.255.0 no keepalive clockrate 64000 ! interface Vlan89 type trbrf no ip address source-bridge trcrf-vlan 9 ring-group 100 source-bridge spanning
The following is the configuration for a Catalyst 5000 with a Token Ring module in slot 5. In this configuration, the Token Ring port 5/1 is assigned with the TrCRF VLAN 10:
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 89 type trbrf bridge 0xd stp ibm set vlan 10 type trcrf parent 89 ring 0xa mode srb #add token ring port to TrCRF 10 set vlan 10 5/1
The following is the configuration for the remote router:
source-bridge ring group 100 dlsw local-peer peer-id 10.18.20.6 dlsw remote-peer 0 tcp 10.18.20.8 ! interface loopback 0 ip address 10.18.20.6 ! interface serial1/0 no ip address no keepalive clockrate 64000 ! interface tokenring 2/0 no ip address ring-speed 16 source-bridge 20 1 100 source-bridge spanning
The following is the configuration for the RSM running DLUR as shown in Figure 17:
source-bridge ring-group 102 interface Vlan100 type trbrf mac-address 4000.0001.0588 ip address 10.10.205.81 255.255.255.0 source-bridge trcrf-vlan 102 ring-group 102 ! appn control-point NETA.NEC2P dlus NETA.SJMVS1 dlur complete ! appn port TRVLAN Vlan100 complete ! appn link-station CORRI !link to CM/2 end node. port TRVLAN lan-dest-address 1000.5acc.724f complete ! appn link-station HOST !link to DLUS. port TRVLAN lan-dest-address 4000.1060.1000 retry-limit infinite 5 complete ! appn routing
The following is the configuration for a Catalyst 5000 with a Token Ring module in slot 5. In this configuration, the Token Ring port 5/10 is assigned to TrCRF VLAN 20.
#vtp set vtp domain trrsm set vtp mode server set vtp v2 enable #drip set tokenring reduction enable set tokenring distrib-crf disable #vlans set vlan 100 type trbrf bridge 0xd stp ibm set vlan 102 type trcrf parent 100 ring 0x66 mode srb set vlan 20 type trcrf parent 100 ring 0x14 mode srb #add token ring port to TrCRF 20 set vlan 20 5/10
This section documents new or modified commands. All other commands used with this feature are documented in the Cisco IOS Release 11.3 command references.
Use the clear drip counters privileged EXEC command to clear DRiP counters from the RSM interfaces.
clear drip countersThis command has no arguments or keywords.
Disabled.
Privileged EXEC
This command first appeared in Cisco IOS Release 11.3(4)T.
Use the clear drip counters command if you want to check whether the router is receiving any packets. The counters will start at 0. If the counters are incrementing, DRiP is active on the router.
The following example clears DRiP counters:
router# clear drip counters router#
clear drip counters
interface vlan
show drip
Use the interface vlan interface configuration command to configure a Token Ring or Ethernet interface on the RSM.
interface vlan vlanid type [trbrf | ethernet]Syntax Description
vlan-id | Unique VLAN ID number used to create a VLAN. |
trbrf | ethernet | RSM Interface type. |
The RSM interfaces are not configured.
Interface configuration
This command first appeared in Cisco IOS Release 11.3(6)T.
Valid Token Ring VLAN ID numbers are 2 through 1000.
Routing or bridging to a Token Ring VLAN (TrBRF) on the RSM is done by creating a logical interface to a TrBRF VLAN on the RSM with the interface vlan command. The TrBRF VLAN must be defined on the Supervisor module prior to creating the TrBRF interface on the RSM.
The interface vlan command is used to configure an RSM Token Ring interface with VLAN 998:
interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0
clear drip counters
multiring trcrf-vlan
source-bridge trcrf-vlan
show drip
Use the multiring trcrf-vlan interface configuration command to create a pseudo ring on the RSM and to terminate the RIF when routing IP or IPX source-routed traffic on Token Ring VLAN (TrBRF) interfaces. Use the no form of this command to disable the termination of RIFs on the RSM interface.
multiring trcrf-vlan vlanid ring-group ring-numberSyntax Description
vlanid | VLAN ID number. Valid VLAN ID numbers are 2 through 1000. |
ring ring-number | Keyword that specifies the pseudo ring number used to terminate the RIF. |
Termination of RIFs is disabled on the RSM interfaces.
Interface configuration
This command first appeared in Cisco IOS Release 11.3(4)T.
Use the multiring command to collect and use RIFs for routed protocols. On an RSM, the multiring command appends RIFs for routed protocols on Token Ring VLAN interfaces. When this command is enabled for a protocol, the RSM will source packets that include information used by source-route bridges. The Token Ring VLAN interfaces on the RSM can connect to an SRB Token Ring network for the protocols specified in the command.
Each Token Ring VLAN interface that is configured with the multiring command on the RSM must also be accompanied by the multiring trcrf-vlan command.
Use the multiring trcrf-vlan command to:
When configuring SRB and IP or IPX routing SR frames on an RSM's TrBRF interface, define both a virtual ring and a pseudo-ring for the interface using the source-bridge and multiring trcrf-vlan commands. In this case, the VLAN ID used for the TrCRF that corresponds to the virtual ring can be the same as the one used for the pseudo ring number. If the VLAN IDs are different, the virtual ring and pseudo-ring numbers must be different.
In the following example, the multiring trcrf-vlan command is used to configure a pseudo-ring with ring number 100 on the RSM:
interface Ethernet 2/2 ip address 4.4.4.1 255.255.255.0 ! interface vlan998 type trbrf ip address 5.5.5.1 255.255.255.0 multiring trcrf-vlan 200 ring-group 100 multiring all
interface vlan
clear drip counters
rif
multiring
show drip
show rif
Use the show drip privileged EXEC command to display the status of the DRiP database for a router or an RSM.
show dripSyntax Description
This command has no arguments or keywords.
Privileged EXEC
This command first appeared in Cisco IOS Release 11.3(4)T.
In the following example, the output for the show drip command is shown:
72-1#show drip DRIP Database for Mgmt Domain FastEthernet4/0 -------------------------------------------------- Mac Address 0010-A6AE-B440 Vlan 100 Status 30 : l-active, l-config, Mac Address 0010-2F72-C800 Vlan 20 Status 0C : r-active, r-config, Vlan 1003 Status 0C : r-active, r-config, Statistics: Advertisements received 126 Advertisements processed 1 Advertisements transmitted 131 Last revision transmitted 0x84 Last changed revision transmitted 0x2
interface vlan
clear drip counters
show vlan
Use the source-bridge trcrf-vlan interface configuration command to attach a VLAN to the RSM's virtual ring when source-route bridging. Use the no form of the command to disable the attachment of a VLAN to the RSM's virtual ring.
source-bridge trcrf-vlan vlanid ring-group ringnumSyntax Description
vlanid | VLAN ID number. |
ring-group ringnum | Pseudo ring number that corresponds to the virtual ring number for the interface. |
Interface configuration
This command first appeared in Cisco IOS Release 11.3(4)T.
Use the source-bridge ring-group command to create a virtual ring for SRB between TrBRF VLANs. Use the source-bridge trcrf-vlan command to assign a TrCRF VLAN ID to the virtual ring.
In SRB and SR/TLB, define a unique TrCRF VLAN ID that corresponds to the virtual ring on the RSM for each TrBRF. Although the VLAN ID for the TrCRF is unique for each TrBRF, the ring number will be the same.
If IP or IPX routing SR frames is required on a TrBRF interface configured for SRB, you must also define a pseudo-ring for this interface with the multiring trcrf-vlan command. In this case, the VLAN ID used for the TrCRF that corresponds to the virtual ring can be the same as the one used for the pseudo-ring. If the VLAN IDs are different, the virtual ring and pseudo-ring numbers must be different.
An example with both SRB and IP routing for SR frames is shown below:
source-bridge ring-group 100 interface Token Ring3/1 source-bridge 10 1 100 source-bridge spanning ! interface vlan999 type trbrf
source-bridge trcrf-vlan 400 ring-group 100 source-bridge spanning multiring all multiring trcrf-vlan 400 ring-group 100
Note that the ring number must be the same for the source-bridge ring-group, source-bridge, and source-bridge trcrf-vlan commands. In this example, the ring number of the pseudo ring also matches the virtual ring number.
show source-bridge
source-bridge ring-group
Following are the debug commands for Token Ring VLAN support on the RSM:
Use the debug drip event privileged EXEC command to display debug messages for DRIP events. Use the no form of this command to disable debugging output.
debug drip eventDebugging is disabled for DRiP events.
Privileged EXEC
This command first appeared in Cisco IOS 11.3(4)T.
This command first appeared in Cisco IOS Release 11.3(4)T. When a TrBRF interface is configured on the RSM, the DRiP protocol is activated. The DRiP protocol adds the VLAN ID specified in the router command to its database and recognizes the VLAN as a locally configured, active VLAN.
Following is an example of debug output for the debug drip event command:
DRiP gets a packet from the network:
612B92C0: 01000C00 00000000 0C501900 0000AAAA .........P....** 612B92D0: 0300000C 00020000 00000100 0CCCCCCC .............LLL 612B92E0: 00000C50 19000020 AAAA0300 000C0102 ...P... **...... 612B92F0: 01010114 00000002 00000002 00000C50 ...............P 612B9300: 19000001 04C00064 04 .....@.d.
DRiP gets a packet from the network:
Recvd. pak
DRiP recognizes that the VLAN ID it is getting is a new one from the network:
6116C840: 0100 0CCCCCCC ...LLL
6116C850: 00102F72 CBFB0024 AAAA0300 000C0102 ../rK{.$**......
6116C860: 01FF0214 0002E254 00015003 00102F72 ......bT..P.../r
6116C870: C8000010 04C00014 044003EB 14 H....@...@.k.
DRIP : remote update - Never heard of this vlan
DRiP attempts to resolve any conflicts when it hears of a new VLAN. The value action = 1 means to notify the local platform of change in state:
DRIP : resolve remote for vlan 20 in VLAN0 DRIP : resolve remote - action = 1
The local platform is notified of change in state:
DRIP Change notification active vlan 20
Another new VLAN ID was received in the packet:
DRIP : resolve remote for vlan 1003 in Vlan0
No action is required:
DRIP : resolve remote - action = 0
Thirty seconds have expired, and DRiP sends its local database entries to all its trunk ports:
DRIP : local timer expired DRIP : transmit on 0000.0c50.1900, length = 24 612B92C0: 01000C00 00000000 0C501900 0000AAAA .........P....** 612B92D0: 0300000C 00020000 00000100 0CCCCCCC .............LLL 612B92E0: 00000C50 19000020 AAAA0300 000C0102 ...P... **...... 612B92F0: 01FF0114 00000003 00000002 00000C50 ...............P 612B9300: 19000001 04C00064 04 .....@.d.
Use the debug drip packet privileged EXEC command to display debug messages for DRiP packets. Use the no form of this command to disable debugging output.
debug drip packetDebugging is not enabled for DRIP packets.
Privileged EXEC
This command first appeared in Cisco IOS Release 11.3(4)T.
Before you use this command, you can optionally use the clear drip command first. As a result the DRiP counters are reset to 0. If the drip counters begin to increment, the router is receiving packets.
Following is sample output for the debug drip packet command.
The following type of output is displayed when a packet is entering the router and you use the show debug command:
039E5FC0: 0100 0CCCCCCC 00E0A39B 3FFB0028 ...LLL.\Q#.?{.(
039E5FD0: AAAA0300 000C0102 01FF0314 0000A5F6 **............%v
039E5FE0: 00008805 00E0A39B 3C000000 04C00028 .....\Q#.<....@.(
039E5FF0: 04C00032 044003EB 0F .@.2.@.k.
039FBD20: 01000C00 00000010 ........
The following type of output is displayed when a packet is transmitted by the router:
039FBD30: A6AEB450 0000AAAA 0300000C 00020000 &.4P..**........ 039FBD40: 00000100 0CCCCCCC 0010A6AE B4500020 .....LLL..&.4P. 039FBD50: AAAA0300 000C0102 01FF0114 00000003 **.............. 039FBD60: 00000002 0010A6AE B4500001 04C00064 ......&.4P...@.d 039FBD70: 04 .
debug drip event
Posted: Fri Jul 16 06:22:11 PDT 1999
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