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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 9 Configuring Resource Management
Configuring Framing Overhead
The framing mode changes when you issue the framing command on an interface and the MaxCR is
adjusted accordingly. If enabling framing overhead reduces the maximum guaranteed service bandwidth
supported on a direction of an interface below the current allocation, use the force option to ensure that
the configuration takes effect.
To configure framing overhead, use the following interface configuration commands:
Example
The following example shows how to enable framing overhead on an interface:
Switch(config)# interface atm 4/1/0
Switch(config-if)# atm cac framing overhead
Displaying the Framing Overhead Configuration
To display the framing overhead configuration, use the following user EXEC command:
Example
The following example shows the framing overhead configuration:
G 751 PLCP 30,528 kbps 34,367 kbps
E1 CRC4 ADM 1919 kbps 2047 kbps
CRC4 PLCP 1785 kbps 2047 kbps
PCM30 ADM 1919 kbps 2047 kbps
PCM30 PLCP 1785 kbps 2047 kbps
T1 SF ADM 1535 kbps 1543 kbps
SF PLCP 1413 kbps 1543 kbps
ESF ADM 1535 kbps 1543 kbps
ESF PLCP 1413 kbps 1543 kbps
1. OC-48c is only available on the Catalyst 8540 MSR.
Table 9-11 MaxCR For Different Framing Overhead Configurations (continued)
Interface Type Framing Mode
With Framing Overhead
Configured
Without Framing Overhead
Configured
Command Purpose
Step 1
Switch(config)# interface atm card/subcard/slot
Switch(config-if)#
Specifies the physical interface to configure.
Step 2
Switch(config-if)# atm cac framing overhead
[force]
Configures framing overhead on an interface
Command Purpose
show atm interface resource atm
card/subcard/port[.vpt#]
Displays the interface framing overhead
configuration.