Cisco Systems OL-16146-10 manual Execute the show scp status and show scp

Chapter 6 Troubleshooting

Troubleshooting Installation Issues

Problem	Solution
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.
Line Card in ROM monitor	• Linecards have a ROMMON variable
	DL_DISABLE depending on which line card
	auto boots or remains in ROMMON waiting
	for manual boot. If DL_DISABLE is set to 0,
	line card does not boot automatically but
	waits for the user to manually boot with
	respective line card image (from line card
	console). Line card auto boots only if
	DL_DISABLE=1. When DL_DISABLE=0
	and line card doe not initialize, SCP
	Keepalive Failure messages appear on RP
	console.

Cisco 7600 Series Ethernet Services Plus Line Card Hardware Installation Guide

OL-16146-10 6-5