Specifications

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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
Configuring PPP on a POS Interface
Note The default encapsulation type for the POS SPA configurations is Cisco HDLC.
PPP is a standard protocol used to send data over synchronous serial links. PPP also provides a Link
Control Protocol (LCP) for negotiating properties of the link. LCP uses echo requests and responses to
monitor the continuing availability of the link.
Step 6
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 7
end
or
commit
Example:
RP/0/0/CPU0:router(config-if)# end
or
RP/0/0/CPU0:router(config-if)# commit
Saves configuration changes.
• When you issue the end command, the system prompts
you to commit changes:
Uncommitted changes found. Commit them before
exiting (yes/no/cancel)? [cancel]:
– Entering yes saves configuration changes to the
running configuration file, exits the configuration
session, and returns the router to EXEC mode.
– Entering no exits the configuration session and
returns the router to EXEC mode without
committing the configuration changes.
– Entering cancel leaves the router in the current
configuration session without exiting or
committing the configuration changes.
• Use the commit command to save the configuration
changes to the running configuration file and remain
within the configuration session.
Step 8
show interfaces pos number
Example:
RP/0/0/CPU0:router# show interfaces POS 0/4/1/0
(Optional) Displays the interface configuration for the POS
interface, where:
• number—Specifies the POS interface in the notation
rack/slot/module/port.
The example indicates POS interface 0, on a SPA in subslot
1, in line card slot 4.
Step 9
show running-config
Example:
RP/0/0/CPU0:router# show running-config
(Optional) Displays the configuration information currently
running on the router.
Command or Action Purpose