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ATM Switch Router Software Configuration Guide
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Chapter7 Configuring Virtual Connections
Configuring Virtual Channel Connections
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 the following steps, beginning in global configuration
mode:
Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See
Chapter 9, “Configuring Resource Management.”
Note When configuring PVC connections, begin with lower VCI numbers. Using low VCI numbers allows
more efficient use of the switch fabric resources.
Note This parameter specifies the weight assigned to the output VC for we ighted round robin scheduling and
is an integer in the range of 1 to 15.This parameter is valid only on systems equipped with the switch
processor feature card. (Catalyst 8540 MSR and Catalyst 8510 MSR and LightStream 1010 with
FC-PFQ). For more information on scheduling, see “Scheduling Output” in the Guide to ATM
Technology.
Note The sched option is only available on OC-48c interfaces. Each OC-48c interface has four OC-12
schedulers. The sched variable is used to select the specific OC-12 scheduler for which the vir tual circuit
is assigned for output on an interface and is therefore a number between 1 and 4.
Examples
The following example shows how to configure the internal cross-connect PVC on Switc h B between
interface ATM3/0/1 (VPI = 0, VCI = 50) and interface ATM3/0/2 (VPI = 2, VCI = 100)
(see Figure 7-1):
Switch-B(config)# interface atm 3/0/1
Switch-B(config-if)# atm pvc 0 50 interface atm 3/0/2 2 100
Command Purpose
Step1 Switch(config)# interface atm card/subcard/port
Switch(config-if)#
Selects the interface to be configured.
Step2 Switch(config-if)# atm pvc vpi-A [vci-A |
any-vci1] [rx-cttr index] [tx-cttr index]
[wrr-weight weight] [sched sched-A] interface
atm card/subcard/port[.vpt#] vpi-B [vci-B |
any-vci1][wrr-weight weight] [sched sched-B]
1. The any-vci parameter is only available for interface atm0.
Configures the PVC.