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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter20 Configuring Frame Relay to ATM Interworking Port Adapter Interfaces
Configuring Overflow Queuing
This section includes the following:
• Overflow Queuing Functional Image Requirements, page 20-44
• Configuring Overflow Queuing on Frame Relay to ATM PVCs, page 20-44
• Configuring Overflow Queuing on Frame Relay to Frame Relay PVCs, page 20-46
• Configuring Overflow Queuing on Frame Relay to ATM Soft PVCs, page 20-47
• Configuring Overflow Queuing on Frame Relay to Frame Relay Soft PVCs, page 20-48
• Displaying Overflow Queuing Configuration at the VC Level, page 20-49
Overflow Queuing Functional Image Requirements
You must have functional image version 4.3 (fi-c8510-4e1fr.A.4.3), or later, installed on the Frame Relay
interface module to use the overflow queuing feature. If your interface module has a functional image
version earlier than 2.4 installed, you must first install intermediate functional image version 2.4 prior
to upgrading to functional image version 4.3.
Note Overflow Queuing is not supported on the CDS3 interface module.
To load and upgrade functional images, see the “Maintaining Functional Images (Catalyst 8540 MSR)”
section on page 26-5 and the “Maintaining Functional Images (Catalyst 8510 MSR and
LightStream 1010)” section on page 26-7.
Configuring Overflow Queuing on Frame Relay to ATM PVCs
This section describes configuring overflow queuing for Frame Relay to ATM PVCs for both network
internetworking and service internetworking connections.
Network Internetworking PVCs
To configure overflow queuing for Frame Relay to ATM PVCs for network internetworking connections,
perform the following steps, beginning in global configuration mode:
Command Purpose
Step 1
Switch(config)# interface serial card/subcard/port:cgn
1
Switch(config-if)#
1. The serial interface is created with the channel-group command and configured using the encapsulation frame-relay ietf command. cgn is
the channel group number of a channel group configured using the channel-group command.
Selects the interface to be configured.
Step 2
Switch(config-if)# frame-relay pvc dlci
2
[accept-overflow
{enable | disable | inherit}]
[upc {pass | tag-drop}] [rx-cttr index] [tx-cttr index]
network [clp-bit {0 | 1 | map-de}] [de-bit {map-de |
map-clp-or-de}] [interface atm card/subcard/port vpi vci
[upc upc] [pd {off | on}] [rx-cttr index] [tx-cttr index]]
2. The dlci value appears in the Conn-Id and X-Conn-Id columns of the show vc command.
Configures a Frame Relay to ATM network
interworking PVC.