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Cisco Bug: CSCtd36548 - cemgbl process blocked on cemgbl_lite on LC SM node

Last Modified

May 08, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

3.9.0.BASE

Description (partial)

Further Problem Description:
 On rare occasions cemgbl process is blocked on cemgbl_lite on a LC SM node

 Symptom:
Control ethernet related MIBs do not respond to snmp queries and control ethernet
related show commands are not working. 
show process block will display that cemgbl process is blocked on cemgbl_lite on LC SM node
 
It can happen that IF-MIB is affected (no MIB objects), so that queries via snmpwalk fail.

 Conditions:
 
The problem can occur in the following cases:
- if a SMU is activated which restarts cemgbl AND cemgbl_lite at the same time;
- if there is a disruption between RP and a SP node due to control ethernet problems

A linecard reload or OIR is not supposed to trigger the problem.
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