Bug ID 751822: ECMP route may not use correct recursive nexthop

Last Modified: Apr 20, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5

Opened: Dec 04, 2018
Severity: 3-Major


Recursive ECMP route may not use a correct nexthop when nexthop of a route changes.


Incorrect routing.


In a corner case where ECMP recursive route is updated and a nexthop of a new route entry resolves recursively to exactly same nexthop as the one used by old route entry, RIB table may not reflect the change still using the old route entry.


- clear BGP session with "clear ip bgp" command through IMISH

Fix Information


Behavior Change