Specifications

6-9
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 12
keepalive [seconds | disable]
Example:
RP/0/0/CPU0:router(config-if)# keepalive
disable
Sets the keepalive timer for the channel.
Step 13
no shutdown
Example:
RP/0/0/CPU0:router(config-if)# no shutdown
Removes the shutdown configuration. The removal of the
shutdown configuration removes the forced administrative
down on the interface, enabling it to move to an up or down
state (assuming the parent SONET layer is not configured
administratively down).
Step 14
exit
Example:
RP/0/0/CPU0:router(config-if)# exit
Exits interface configuration mode.
Step 15
Repeat Step 9 through Step 14 for each channel in the
group.
—
Step 16
controller sonet number
Example:
RP/0/0/CPU0:router(config)# controller sonet
0/1/0/0
Enters SONET controller configuration submode, where:
number—Specifies the SONET controller number, which is
the same as the associated POS interface, in the notation
rack/slot/module/port.
Step 17
ais-shut
Example:
RP/0/0/CPU0:router(config-sonet)# ais-shut
Configures line alarm indication signal (LAIS) at shutdown.
Step 18
no path scrambling disable
Example:
RP/0/0/CPU0:router(config-sonet)# no path
scrambling disable
(Optional) Enables synchronous payload envelope (SPE)
scrambling. Scrambling is enabled by default; you only
need to enable it if you have previously disabled it.
Step 19
clock source {internal | line}
Example:
RP/0/0/CPU0:router(config-sonet)# clock source
internal
(Optional) Configures the SONET port TX clock source,
where:
• internal—Sets the internal clock. Use this option when
two routers are connected back-to-back or over fiber for
which no clocking is available.
• line—Sets the clock to be recovered from the line
(default). Use this option whenever clocking is derived
from the network.
Step 20
Repeat Step 16 to Step 19 for each channel in the
group.
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Command or Action Purpose