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Chapter 4
Configuring the OC12 POS Line Card
Beginning in Cisco IOS Release 12.(31)SB13, B3 TCA alarms will bring the line down immediately
regardless of the configured delay time when pos delay path trigger is configured; the configured trigger
delay time is not applicable to B3 TCA alarms. If pos delay path trigger is not configured, B3 TCA
alarms will not bring the line down. In releases prior to Cisco IOS Release 12.2(31)SB13, B3 TCA
alarms are not triggers for the line protocol to go down by default.
The pos delay triggers path command can also bring down the line protocol when the higher of the B2
and B3 error rates is compared with the signal failure (SF) threshold. If the SF threshold is crossed, the
line protocol of the interface goes down.
The pos delay triggers path command was introduced in Cisco IOS Release 12.0(16)S.
Checking the Configuration
After configuring the new interface, use the show commands to display the status of the new interface
or all interfaces, and use the ping command to check connectivity. This section includes the following
subsections:
•
•
Using show Commands to Verify the New Interface Status
Table 4-3
and operating correctly and that the OC12 POS line card appears in them correctly. Sample displays of
the output of selected show commands appear in the sections that follow. For complete command
descriptions and examples, refer to the publications listed in the
page
Note
The outputs that appear in this document may not match the output you receive when running these
commands. The outputs in this document are examples only.
Table 4-3
Using show Commands
Command
show version or
show hardware
show diag slot
OL-3437-01
Using show Commands to Verify the New Interface Status, page 4-7
Using the ping Command to Verify Network Connectivity, page 4-11
demonstrates how you can use the show commands to verify that new interfaces are configured
8.
Function
Displays system hardware
configuration, the number of
each interface type installed,
Cisco IOS software version,
names and sources of
configuration files, and boot
images
Displays types of line cards
installed in your system and
information about a specific
line card slot
Example
Router# show version
Router# show diag 2
OC12 Packet Over SONET Line Card Installation and Configuration
Checking the Configuration
"Related Documentation" section on
4-7
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