Specifications

6-8
Cisco XR 12000 Series Router SIP and SPA Software Configuration Guide, Release 3.2
Release 3.2, OL-6396-01, Rev.A1 January 9, 2006
Chapter 6 Configuring POS SPAs on Cisco IOS XR Software
Configuration Tasks
Step 3
channel {0 | 1} local {sonet | preconfigure}
number
Example:
RP/0/0/CPU0:router(config-aps)# channel 0 local
SONET 0/0/0/1
Creates a channel for the APS group, where:
• 0 designates a protect channel
• 1 designates a working channel
Note If the protect channel is local, it must be assigned
using a channel command before any of the
working channels are assigned.
Step 4
Repeat Step 3 for each channel in the group. —
Step 5
exit
Example:
RP/0/0/CPU0:router(config-aps)# exit
Exits APS group configuration mode.
Step 6
interface loopback number
Example:
RP/0/0/CPU0:router(config)# interface loopback
1
(Optional) Configures a loopback interface if a two-router
APS is desired and enters interface configuration mode.
Step 7
ipv4 address ip-address mask
Example:
RP/0/0/CPU0:router(config-if)# ipv4 address
172.18.0.1 255.255.255.224
Assigns an IPv4 address and subnet mask to the interface.
Step 8
exit
Example:
RP/0/0/CPU0:router(config-aps)# exit
Exits loopback interface configuration mode.
Step 9
interface pos number
Example:
RP/0/0/CPU0:router(config-if)# interface pos
0/2/0/0
Connects the interface for the each channel selected in
Step 3, where:
• number—Specifies the POS interface, in the notation
rack/slot/module/port.
The example indicates POS interface 0, on a SPA in subslot
0, in line card slot 2.
Step 10
ipv4 address ip-address mask
Example:
RP/0/0/CPU0:router(config-if)# ipv4 address
172.18.0.1 255.255.255.224
Assigns an IPv4 address and subnet mask to the interface.
Step 11
pos crc (16 | 32)
Example:
RP/0/0/CPU0:router(config-if)# pos crc 32
Selects a CRC value for the channel. The default CRC value
is 32.
Command or Action Purpose