7-5
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
OL-5052-14
Chapter 7 Troubleshooting the Installation
Troubleshooting
SCP Keepalive Failure
•
The SP and the MSFC periodically poll each
individual LC in the chassis for its health via
SCP keepalives. Each LC in turn, must
respond within a certain amount of time
(dictated by the SCP keepalive timer) to
indicate its health. If the LC fails to respond
to the keepalives within the stipulated period
of time, the MSFC assumes that there is an
issue with the LC and power cycles it. When
the LC comes back online, the SCP
keepalives are resumed.
•
A line card might be unable to respond to the
scp keepalives under situations of extreme
stress when the CPU is busy with higher
priority tasks, such as packet switching,
interrupt processing etc.
•
Execute the
show scp status
and
show scp
line cards
command to gather detailed
information about the SCP process and health
of each LC. A
show diagbus
indicates any
errors with the LC.
•
Execute the
test scp line card keepalive
disable
exec command on the RP console to
disable the SCP keepalive timer and debug
LC issues. To prevent the LC from being
power cycled and losing its information,
ensure that you disable the SCP keepalives
for some time.
Problem
Solution