Bug ID 2131597: BGP graceful restart might not accept a new connection immediatelly post neighbor failover.

Last Modified: Oct 15, 2025

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Oct 14, 2025

Severity: 4-Minor

Symptoms

When remote peer restarts and BGP graceful restart mechanism was advertised and received, BIG-IP might not immediately accept a new connection from a restarting peer.

Impact

New connection might take longer to establish.

Conditions

- BGP graceful restart mechanism was advertised and received. - Remote peer restarting.

Workaround

You can work the problem around by making sure BIG-IP local router-ID is lower than re-connecting peer ID.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips