[BGP]Tuning zebra nexthop-group keep parameter #21135
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lguohan
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Dec 16, 2024
dgsudharsan
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Why I did it
Setting the nexthop-group keep parameter to 1. This will instruct zebra not to save nexthop group for more than 1 second after removal. Without this zebra will keep nexthop group in the system for 180 seconds.
In scaled scenarios when this parameter is not set it resulted in the queue growing so big and crashing zebra due to OOM when there is test on link flapping.
Work item tracking
How I did it
Update the zebra template and initialize nexthop-group keep as 1.
How to verify it
Running the scale test with link flapping and ensure no memory increase in zebra.
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)