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This chapter describes how to configure virtual connections (VCs) in a typical ATM network after autoconfiguration has established the default network connections. The network configuration modifications described in this chapter are used to optimize your ATM network operation.
The characteristics of the VC, established when the VC is created, include:
These switching features can be turned off with interface configuration commands; autonomous switching must be explicitly enabled per interface. SVC connection setup is possible both on trunk/subtended interfaces as well as all subscriber ports.
The total number of SVCs supported is approximately 24k. The total number of PVCs supported is approximately 5k (constrained by Flash size). The call rate is two hundred calls per second.
Table 5-1 lists the types of supported virtual connections.
| Connection | Point-to- Point | Transit | Terminate |
|---|---|---|---|
Permanent virtual channel link (PVCL) | 3 | — | — |
Permanent virtual path link (PVPL) | 3 | — | — |
Permanent virtual channel (PVC) | 3 | 3 | 3 |
Permanent virtual path (PVP) | 3 | 3 | — |
Soft permanent virtual channel (Soft PVC) | 3 | 3 | — |
Soft permanent virtual path (Soft PVP) | 3 | 3 | — |
Switched virtual circuit (SVC) | 3 | 3 | 3 |
Switched virtual path (SVP) | 3 | 3 | — |
This section describes how to configure DSLAM VCCs. A VCC is established as a bidirectional facility to transfer ATM traffic between two ATM layer users. Figure 5-1 shows an example VCC between ATM user A and user D.
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Note The value of the VPIs and VCIs can change as the traffic is relayed through the ATM network. |
To configure a point-to-point VCC, perform these steps, beginning in global configuration mode:
Step | Command | Task |
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| 1The any-vci parameter is only available for ATM interface0/0. 2The parameter pd is not applicable to a virtual path. |
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Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See "Configuring Resource Management." |
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Note When you configure PVC connections, configure the lowest VPI and VCI numbers first. |
This example shows how to configure the internal cross-connect PVC on DSLAM B between interface 0/1, VPI = 0, VCI = 50 and interface 0/2, VPI = 2, VCI = 100 (see Figure 5-1):
DSLAM-B(config)# interface atm 0/1 DSLAM-B(config-if)# atm pvc 0 50 interface atm 0/2 2 100
This example shows how to configure the internal cross-connect PVC on DSLAM C between interface 1/0, VPI = 2, VCI = 100 and interface0/1, VPI 50, VCI = 255:
DSLAM-C(config)# interface atm 1/0 DSLAM-C(config-if)# atm pvc 2 100 interface atm 0/1 50 255
Each subsequent VC cross-connection and link must be configured until the VC is terminated to create the entire VCC.
This example shows how to configure the CPU leg of any terminating PVC:
DSLAM(config)# interface atm0/0 DSLAM(config-if)# atm pvc 0 ? <32-16383> vci any-vci Choose any available vci DSLAM(config-if)# atm pvc 0 any-vci DSLAM(config-if)#
When configuring the CPU leg of a PVC that is not a tunnel, the VPI should be configured as 0. The preferred method of VCI configuration is to select the any-vci parameter, unless a specific VCI is needed as a parameter in another command, such as map-list.
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Note If configuring a specific VCI value for the CPU leg, select a VCI value higher than 300. This step prevents a conflict with an automatically assigned VCI for well-known channels if the DSLAM reboots. |
To show the VC configuration, use these EXEC commands:
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This example displays the DSLAM B PVC configuration on ATM interface 0/2:
DSLAM-B# show atm interface 0/2
Interface: ATM0/2 Port-type: suni-dual
IF Status: UP Admin Status: up
Auto-config: enabled AutoCfgState: completed
IF-Side: Network IF-type: NNI
Uni-type: not applicable Uni-version: not applicable
Max-VPI-bits: 8 Max-VCI-bits: 14
Max-VP: 255 Max-VC: 16383
Svc Upc Intent: pass Signalling: Enabled
ATM Address for Soft VC: 47.0091.8100.0000.0001.0000.0001.4000.0c81.8010.00
Configured virtual links:
PVCLs SoftVCLs SVCLs PVPLs SoftVPLs SVPLs Total-Cfgd Installed-Conns
5 0 0 0 0 0 5 5
Logical ports(VP-tunnels): 0
Input cells: 527452 Output cells: 527485
5 minute input rate: 0 bits/sec, 0 cells/sec
5 minute output rate: 0 bits/sec, 0 cells/sec
Input AAL5 pkts: 344372, Output AAL5 pkts: 344384, AAL5 crc errors: 0
This example displays the DSLAM B PVC configuration on ATM interface 0/2:
DSLAM-B# show atm vc interface atm 0/2 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/2 0 5 PVC ATM0/0 0 57 QSAAL UP ATM0/2 0 16 PVC ATM0/0 0 37 ILMI UP ATM0/2 0 18 PVC ATM0/0 0 73 PNNI UP ATM0/2 0 50 PVC ATM0/0 2 100 UP ATM0/2 1 50 PVC ATM0/0 0 80 SNAP UP
This example displays the DSLAM B configuration on interface 0/1, VPI = 0, VCI = 50:
DSLAM-B# show atm vc interface atm 0/1 0 50 Interface: ATM0/1, Type: suni-dual VPI = 0 VCI = 50 Status: UP Time-since-last-status-change: 00:31:30 Connection-type: PVC Cast-type: point-to-point Packet-discard-option: disabled Usage-Parameter-Control (UPC): pass Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Cross-connect-interface: ATM0/2, Type: suni-dual Cross-connect-VPI = 2 Cross-connect-VCI = 100 Cross-connect-UPC: pass Cross-connect OAM-configuration: disabled Cross-connect OAM-state: Not-applicable Rx cells: 0, Tx cells: 0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This example displays the DSLAM B PVC configuration on ATM interface 0/2, VPI = 0, VCI = 50:
DSLAM-B# show atm vc interface atm 0/2 0 50 Interface: ATM0/2, Type: suni-dual VPI = 0 VCI = 50 Status: UP Time-since-last-status-change: 4d02h Connection-type: PVC Cast-type: point-to-point Packet-discard-option: disabled Usage-Parameter-Control (UPC): pass Wrr weight: 32 Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Cross-connect-interface: ATM0/1, Type: suni-dual Cross-connect-VPI = 2 Cross-connect-VCI = 100 Cross-connect-UPC: pass Cross-connect OAM-configuration: disabled Cross-connect OAM-state: Not-applicable Threshold Group: 5, Cells queued: 0 Rx cells: 0, Tx cells: 0 Tx Clp0:0, Tx Clp1: 0 Rx Clp0:0, Rx Clp1: 0 Rx Upc Violations:0, Rx cell drops:0 Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This section describes how to configure point-to-point terminating PVC connections. Terminating connections provide the connection to the DSLAM CPU for control channels for Interim Local Management Interface (ILMI), signaling, and Private Network-to-Network Interface (PNNI) plus network management.
Figure 5-2 shows an example of transit and terminating connections.
Point-to-point is a type of terminating connection. Terminating connections are configured using the same commands as transit connections (discussed in the previous sections). However, all switch terminating connections use interface 0/0 to connect to the switch CPU.
To configure point-to-point terminating PVC connections, perform these steps, beginning in global configuration mode:
Step | Command | Task |
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| 1The any-vci feature is only available for interface ATM 0/0. |
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Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See "Configuring Resource Management." |
This example shows how to configure the CPU leg of any terminating PVC:
DSLAM(config)# interface atm0/0 DSLAM(config-if)# atm pvc 0 ? <32-16383> vci any-vci Choose any available vci DSLAM(config-if)# atm pvc 0 any-vci
When configuring the CPU leg of a PVC that is not a tunnel, the VPI should be configured as 0. The preferred method of VCI configuration is to select the any-vci parameter, unless a specific VCI is needed as a parameter in another command, such as map-list.
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Note If you configure a specific VCI value for the CPU leg, select a VCI value greater than 300 to prevent a conflict with an automatically assigned VCI for well-known channels if the DSLAM reboots. |
This example shows how to configure the internal cross-connect PVC between interface 0/2, VPI = 1, VCI = 50 and the terminating connection at the CPU interface 0/0, VPI = 0, and VCI unspecified:
DSLAM-B(config)# interface atm 0/2 DSLAM-B(config-if)# atm pvc 1 50 interface atm0/0 0 any-vci encap aal5snap
To show the terminating PVC configuration, use the EXEC commands:
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This section describes how to configure a PVP connection. Figure 5-3 shows an example of a DSLAM with PVPs configured through the switch. Switch B and Switch C can be either ATM switches or DSLAMs.
To configure a PVP connection, perform these steps, beginning in global configuration mode:
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Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See "Configuring Resource Management." |
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Note No traffic shaping or policing is available in the downstream direction. |
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Note When you configure PVC connections, configure the lowest VPI and VCI numbers first. |
This example shows how to configure the internal cross-connect PVP within DSLAM B between interfaces 0/2, VPI = 1 and interface 0/1, VPI = 2:
DSLAM-B# config term Enter configuration commands, one per line. End with CNTL/Z. DSLAM-B(config)# interface atm 0/2 DSLAM-B(config-if)# atm pvp 1 interface atm 0/1 2
This example shows how to configure the internal cross-connect PVP within DSLAM C between interfaces 0/1, VPI = 2 and interface 0/2, VPI = 50:
DSLAM-C(config)# interface atm 0/1 DSLAM-C(config-if)# atm pvp 2 interface atm 0/2 50
Each subsequent PVP cross connection and link must be configured until the VP is terminated to create the entire PVP.
To show the ATM interface configuration, use this EXEC command:
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This example displays the PVP configuration of DSLAM B:
DSLAM-B# show atm vp Interface VPI Type X-Interface X-VPI Status ATM0/1 1 PVP ATM0/2 2 UP
This example displays the PVP configuration of DSLAM B:
DSLAM-B# show atm vp interface atm 0/1 1 Interface: ATM0/1, Type: suni-dual VPI = 1 Status: TUNNEL Time-since-last-status-change: 4d22h Connection-type: PVP Cast-type: point-to-point Usage-Parameter-Control (UPC): pass Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Cross-connect-interface: ATM0/2, Type: suni-dual Cross-connect-VPI = 2 Cross-connect-UPC: pass Cross-connect OAM-configuration: disabled Cross-connect OAM-state: Not-applicable Rx cells: 0, Tx cells: 0 Rx Upc Violations:0, Rx cell drops:0 Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This example displays the PVP configuration of DSLAM B:
DSLAM-B# show atm vp interface atm 0/1 1 Interface: ATM3/1/0, Type: suni-dual VPI = 1 Status: TUNNEL Time-since-last-status-change: 4d22h Connection-type: PVP Cast-type: point-to-point Usage-Parameter-Control (UPC): pass Wrr weight: 32 Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Cross-connect-interface: ATM0/2, Type: suni-dual Cross-connect-VPI = 2 Cross-connect-UPC: pass Cross-connect OAM-configuration: disabled Cross-connect OAM-state: Not-applicable Threshold Group: 5, Cells queued: 0 Rx cells: 0, Tx cells: 0 Tx Clp0:0, Tx Clp1: 0 Rx Clp0:0, Rx Clp1: 0 Rx Upc Violations:0, Rx cell drops:0 Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This section describes how to configure soft PVC connections, which provide these features:
Figure 5-4 illustrates the soft PVC connections used in these examples. Switch B and Switch C can be ATM switches or DSLAMs.
Perform these steps when you configure soft PVCs:
Step 2 Decide which of these two ports you want to designate as the destination (or passive) side of the soft PVC.
This decision is arbitrary—it makes no difference which port you define as the destination end of the circuit.
Step 3 Configure the destination (passive) side of the soft PVC.
You must configure the destination end of the soft PVC first, to define an ATM address for that port.
You must retrieve this address (see Step 4), and the VPI/VCI values for the circuit (see Step 5), and use these elements as part of the command string when you configure the source (active) end of the soft PVC (see Step 6).
Step 4 Retrieve the ATM address of the destination end of the soft PVC using the show atm address command. This command typically produces output in the form:
DSLAM# show atm address Switch Address(es): 47.00918100000000400B0A2A81.00400B0A2A81.00 active Soft VC Address(es): 47.0091.8100.1111.1111.1111.1111.1111.1111.1111.00 ATM4/0 ILMI Switch Prefix(es): 47.0091.8100.0000.0040.0b0a.2a81 ILMI Configured Interface Prefix(es): LECS Address(es):
Step 5 Retrieve the VPI/VCI values for the circuit using the show atm vc command. This command typically produces output in the form:
DSLAM# show atm vc interface atm 0/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/0 0 5 PVC ATM0/0 0 52 QSAAL DOWN ATM0/0 0 16 PVC ATM0/0 0 32 ILMI DOWN ATM0/0 0 200 SoftVC ATM0/0 0 100 UP DSLAM#
Step 6 Configure the source (active) end of the soft PVC. At the same time, complete the soft PVC setup using the information derived from Step 4 and Step 5.
You must configure the source end of the soft PVC last because this not only defines the configuration information for the source port, but also requires you to enter the ATM address and VPI/VCI values for the destination port.
If you have not already defined the destination port for the soft PVC (as required in Step 3), this ATM address is not defined for the destination port, and the VPI/VCI values are not available, as required in Step 6 for use in completing the soft PVC.
To configure a soft PVC connection, perform these steps, beginning in privileged EXEC mode:
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Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See "Configuring Resource Management." |
This example shows how to allow User A to determine the destination ATM address of the interface connected to User D:
Switch-C# show atm addresses
Switch Address(es): 47.00918100000000603E5ADB01.00603E5ADB01.00 active Soft VC Address(es): 47.0091.8100.1111.1111.1111.1111.1111.1111.1111.00 ATM0/0 ILMI Switch Prefix(es): 47.0091.8100.0000.0060.3e5a.db01 ILMI Configured Interface Prefix(es): LECS Address(es):
This example shows how to configure a soft PVC on Switch B between interface 0/0, source VPI = 0, source VCI = 200; and switch C, destination ATM address = 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00, VPI = 0, VCI = 100 (see Figure 5-4):
Switch-B(config)# interface atm 0/0 Switch-B(config-if)# atm soft-vc 0 200 dest-address 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 0 100
To display the soft VC configuration at either end of a switch or DSLAM, use the EXEC commands:
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This example displays the soft VC configuration of Switch B, on interface 0/0 out to the ATM network:
Switch-B# show atm vc interface atm 0/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/0 0 5 PVC ATM0/0 0 52 QSAAL DOWN ATM0/0 0 16 PVC ATM0/0 0 32 ILMI DOWN ATM0/0 0 200 SoftVC ATM0/0 0 100 UP
This example displays the soft VC configuration of Switch C, on interface 4/0 out to the ATM network:
Switch-C# show atm vc interface atm 4/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM4/0 0 5 PVC ATM0/0 0 52 QSAAL DOWN ATM4/0 0 16 PVC ATM0/0 0 32 ILMI DOWN ATM4/0 0 100 SoftVC ATM0/0 0 200 UP
This example displays the soft VC configuration of Switch B, on interface 0/0, VPI = 0, VCI = 200 out to the ATM network:
Switch-B# show atm vc interface atm 0/0 0 200 Interface: ATM0/0, Type: suni-dual VPI = 0 VCI = 200 Status: NOT CONNECTED Time-since-last-status-change: 00:00:45 Connection-type: SoftVC Cast-type: point-to-point Soft vc location: Source Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 Remote VPI: 0 Remote VCI: 100 Soft vc call state: Inactive Number of soft vc re-try attempts: 4 Slow-retry-interval: 60 seconds Next retry in: 29 seconds Aggregate admin weight: 0 Packet-discard-option: disabled Usage-Parameter-Control (UPC): pass Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Rx cells: 0, Tx cells: 0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This example displays the soft VC configuration of Switch B, on interface 0/0, VPI = 0, VCI = 200 out to the ATM network with FC-PFQ installed:
Switch-B# show atm vc interface atm 0/0 0 200 Interface: ATM0/0, Type: suni-dual VPI = 0 VCI = 200 Status: NOT CONNECTED Time-since-last-status-change: 00:00:45 Connection-type: SoftVC Cast-type: point-to-point Soft vc location: Source Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 Remote VPI: 0 Remote VCI: 100 Soft vc call state: Inactive Number of soft vc re-try attempts: 4 Slow-retry-interval: 60 seconds Next retry in: 29 seconds Aggregate admin weight: 0 Packet-discard-option: disabled Usage-Parameter-Control (UPC): pass Wrr weight: 32 Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Threshold Group: 5, Cells queued: 0 Rx cells: 0, Tx cells: 0 Tx Clp0:0, Tx Clp1: 0 Rx Clp0:0, Rx Clp1: 0 Rx Upc Violations:0, Rx cell drops:0 Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This section describes how to configure soft PVP connections. Soft PVC connections provide these features:
Figure 5-5 is an illustration of the soft PVP connections used in the examples in this section. Switch B and Switch C can be ATM switches or DSLAMs.
To configure a soft PVP connection, perform these steps, beginning in global configuration mode:
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Note You must configure the row index for rx-cttr and tx-cttr before you use this optional parameter. See "Configuring Resource Management." |
This example shows how to configure a soft PVP on Switch B between interface 0/0, source VPI = 75, and Switch C, destination ATM address = 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00, VPI = 50 (Figure 5-5):
Switch-B(config)# interface atm 0/0 Switch-B(config-if)# atm soft-vp dest-address 75 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 50
To show the ATM virtual path configuration, use this EXEC command:
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This example displays the soft VP configuration at Switch B, on interface 0/0 out to the ATM network:
Switch-B# show atm vp Interface VPI Type X-Interface X-VPI Status ATM0/0 75 SoftVP ATM4/0 50 UP
This example displays the soft VP configuration at Switch C, on interface 4/0 out to the ATM network:
Switch-C# show atm vp Interface VPI Type X-Interface X-VPI Status ATM4/0 50 SoftVP ATM0/0 75 UP
This example displays the soft VP configuration at Switch B, on interface 0/0, VPI = 75 out to the ATM network:
Switch-B# show atm vp interface atm 0/0 75 Interface: ATM0/0, Type: suni-dual VPI = 75 Status: TUNNEL Time-since-last-status-change: 00:01:10 Connection-type: SoftVP Cast-type: point-to-point Soft vp location: Source Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 Remote VPI: 50 Soft vp call state: Inactive Number of soft vp re-try attempts: 4 Slow-retry-interval: 60 seconds Next retry in: 4 seconds Aggregate admin weight: 0 Usage-Parameter-Control (UPC): pass Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Rx cells: 0, Tx cells: 0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx cdvt: 1024 (from default for interface) Rx mbs: none Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx cdvt: none Tx mbs: none
This example displays the soft VP configuration at Switch B, on interface 0/0, VPI = 75 out to the ATM network:
Switch-B# show atm vp interface atm 0/0 75 Interface: ATM0/0, Type: suni-dual VPI = 75 Status: TUNNEL Time-since-last-status-change: 00:01:10 Connection-type: SoftVP Cast-type: point-to-point Soft vp location: Source Remote ATM address: 47.0091.8100.00.0000.1111.1111.1111.1111.1111.1111.00 Remote VPI: 50 Soft vp call state: Inactive Number of soft vp re-try attempts: 4 Slow-retry-interval: 60 seconds Next retry in: 4 seconds Aggregate admin weight: 0 Usage-Parameter-Control (UPC): pass Wrr weight: 32 Number of OAM-configured connections: 0 OAM-configuration: disabled OAM-states: Not-applicable Threshold Group: 5, Cells queued: 0 Rx cells: 0, Tx cells: 0 Tx Clp0:0, Tx Clp1: 0 Rx Clp0:0, Rx Clp1: 0 Rx Upc Violations:0, Rx cell drops:0 Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0 Rx connection-traffic-table-index: 1 Rx service-category: UBR (Unspecified Bit Rate) Rx pcr-clp01: 7113539 Rx scr-clp01: none Rx mcr-clp01: none Rx tolerance: 1024 (from default for interface) Tx connection-traffic-table-index: 1 Tx service-category: UBR (Unspecified Bit Rate) Tx pcr-clp01: 7113539 Tx scr-clp01: none Tx mcr-clp01: none Tx tolerance: none
Table 5-2 lists the default well-known VCs and their default configuration.
| Channel Type | Virtual Path Identifier | Virtual Channel Identifier |
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Signaling | 0 | 5 |
ILMI | 0 | 16 |
PNNI | 0 | 18 |
Tag switching | 0 | 32 |
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Caution Do not change the well-known channels to use a VC where the remote end is sending AAL5 messages not intended for the well-known VC. For example, do not swap VC values between two types of well-known VCs. |
This section provides an overview of the steps you need to perform to configure non-default well-known VCs:
Step 2 Delete any existing automatically created well-known VCs.
Step 3 Configure the individual encapsulation type as:
Step 4 Copy running-configuration file to startup-configuration file.
To configure the non-default VCs for signaling, ILMI, and PNNI, perform these steps, beginning in global configuration mode:
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Note An error condition occurs if either the signaling or ILMI well-known VCs remain unconfigured when an interface is enabled. |
This example shows the non-default VC configuration steps:
Step 2 Change to interface configuration mode for ATM interface 0/0.
Step 3 Enter manual well-known-vc mode and delete the existing default well-known VCs using the atm manual-well-known-vc delete command.
Step 4 Confirm deletion by entering y.
Step 5 Configure the non-default VC for signaling from 5 (the default) to 35 using the atm pvc 1 35 interface atm0/0 0 any-vci encap qsaal command.
Step 6 Configure the ILMI VC, then configure the PNNI VC if needed using the same procedure.
Step 7 Save the new running configuration to the startup configuration using the copy running-config startup-config command.
An example of this procedure is:
DSLAM# show atm vc interface atm 0/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/0 0 5 PVC ATM0/0 0 49 QSAAL UP ATM0/0 0 16 PVC ATM0/0 0 33 ILMI UP ATM0/0 0 18 PVC ATM0/0 0 65 PNNI UP DSLAM# DSLAM# configure terminal Enter configuration commands, one per line. End with CNTL/Z. DSLAM(config)# interface atm 0/0 DSLAM(config-if)# atm manual-well-known-vc delete Okay to delete well-known VCs for this interface? [no]: y DSLAM(config-if)# exit DSLAM(config)# interface atm 0/0 DSLAM(config-if)# atm pvc 1 35 interface atm0/0 0 any-vci encap qsaal DSLAM(config-if)# ^Z DSLAM# %SYS-5-CONFIG_I: Configured from console by console DSLAM# show atm vc interface atm 0/0 Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status ATM0/0 1 35 PVC ATM0/0 0 150 QSAAL UP DSLAM# copy running-config startup-config Building configuration... [OK]
Posted: Tue Sep 19 10:55:58 PDT 2000
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