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Cisco Bug: CSCul55506 - Memory leak in lldp_agent process on IOS XR platforms

Last Modified

Nov 27, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.2.3.BASE 4.3.2.BASE

Description (partial)

The memory allocated by the lldp_agent process on the LC is slowly increasing. Eventually this can lead to a restart of the process. Example logs:

LC/0/0/CPU0:Nov 20 03:34:03.939 : sysmgr[91]: lldp_agent(1) (jid 251) (pid 3387559) (fail_count 2) abnormally terminated, restart scheduled 

This message is typically followed by %OS-DUMPER messages

The restart of lldp_agent does not have an impact on the service.

To monitor the memory utilization of lldp_agent on a specific LC you can use the following commands:

1. show process lldp_agent location X/Y/Z
-> Locate the Job ID (JID)
2. show process memory #JID# location X/Y/Z

Symptom:
The memory allocated by the lldp_agent process on the LC is slowly increasing. Eventually this can lead to a restart of the process. Example logs:

LC/0/0/CPU0:Nov 20 03:34:03.939 : sysmgr[91]: lldp_agent(1) (jid 251) (pid 3387559) (fail_count 2) abnormally terminated, restart scheduled 

This message is typically followed by %OS-DUMPER messages

The restart of lldp_agent does not have an impact on the service.

To monitor the memory utilization of lldp_agent on a specific LC you can use the following commands:

1. show process lldp_agent location X/Y/Z
-> Locate the Job ID (JID)
2. show process memory #JID# location X/Y/Z

Conditions:
ASR9K running IOS-XR 4.x software, or an NCS running IOS XR 5.0.x software
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