Cisco Systems OL-7396-01 Manual De Usuario
20-3
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 20
Configuring Frame Relay to ATM Interworking Port Adapter Interfaces
Configuring the Channelized DS3 Frame Relay Port Adapter
•
Clock source—internal
•
Line coding—b8zs
•
T1 yellow alarm—detection and generation
Configuring the CDS3 Frame Relay Port Adapter Interface
To manually change any of your default configuration values, perform the following steps, beginning in
global configuration mode:
global configuration mode:
Example
The following example shows how to change the cable length configuration to 300 using the cablelength
command.
command.
Switch(config)# controller t3 3/0/0
Switch(config-controller)# cablelength 300
When using the cable length option, note that user-specified T3 cable lengths are structured into ranges
as follows: 0 to 224 and 225 to 450. If you enter a cable length value that falls into one of these ranges,
the range for that value is used.
as follows: 0 to 224 and 225 to 450. If you enter a cable length value that falls into one of these ranges,
the range for that value is used.
For example, if you enter 150 feet, the 0 to 224 range is used. If you later change the cable length
to 200 feet, there is no change because 200 is within the 0 to 224 range. However, if you change the
cable length to 250, the 225 to 450 range is used. The actual number you enter is stored in the
configuration file.
to 200 feet, there is no change because 200 is within the 0 to 224 range. However, if you change the
cable length to 250, the 225 to 450 range is used. The actual number you enter is stored in the
configuration file.
Command
Purpose
Step 1
Switch(config)# controller t3 card/subcard/port
Switch(config-controller)#
Specifies the controller interface port and enters
controller configuration mode.
controller configuration mode.
Step 2
Switch(config-controller)# clock source
{free-running | loop-timed | network-derived |
reference}
{free-running | loop-timed | network-derived |
reference}
Configures the type of clocking.
Step 3
Switch(config-controller)# framing {c-bit | m23} Configures the CDS3 Frame Relay port adapter
framing type.
Step 4
Switch(config-controller)# cablelength
cablelength
cablelength
Configures the CDS3 Frame Relay port adapter
cable length.
cable length.
Step 5
Switch(config-controller)# mdl {transmit {path |
idle-signal | test-signal} | string {eic | lic | fic |
unit | pfi | port | generator string}
idle-signal | test-signal} | string {eic | lic | fic |
unit | pfi | port | generator string}
1
1.
MDL messages are only supported when framing on the CDS3 Frame Relay port adapter is set for c-bit parity.
Configures the maintenance data link (MDL)
message.
message.