Setup guide

5-17
Cisco 6400 Software Setup Guide
OL-1183-04
Chapter5 Redundancy and SONET APS Configuration
NLC Redundancy
Verifying Erased Startup Configurations
To verify that you erased the startup configuration on redundant NRPs, use the dir nvram: and
dirsec-nvram: EXEC commands and check that the startup-config size is zero:
NRP# dir nvram:
Directory of nvram:/
1 -rw- 0 <no date> startup-config
129016 bytes total (129016 bytes free)
You can also use the show startup EXEC command and make sure that a valid configuration file does
not appear:
NRP# show startup
%% Non-volatile configuration memory is being written, Try again later
NLC Redundancy
When a node line card (NLC) is configured for redundancy, all ports on that card are automatically
configured to operate in redundant mode using SONET automatic protection switching (APS). For more
information on SONET APS, see the “SONET APS for NLC Port Redundancy” section on page5-19.
Configuring Redundant Full-Height NLCs
For two full-height NLCs to act as a redundant pair, they must be installed in one the following slot pairs:
• 1 and 2
• 3 and 4
• 5 and 6
• 7 and 8
Note By default, the NLC in the lower slot number is the working device, and the NLC in the higher slot
number is the protection device.
To configure redundant full-height NLCs, complete the following steps beginning in global
configuration mode:
Command Purpose
Step1
Switch(config)# redundancy
Enters the redundancy configuration submode.
Step2
Switch(config-r)# associate slot slot [slot]
Configures the two slots as a redundant pair. You
need specify only the first slot of the redundant pair.
The second slot is assumed to be the adjacent slot.