Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP All
Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2
Fixed In:
13.0.0, 12.1.2
Opened: Sep 05, 2016 Severity: 3-Major Related Article:
K03587067
When an ECMP route is learned via dynamic routing, it is not added to the Linux host and local processes may not be able to reach the destination prefix. Load balanced traffic is not affected.
Monitors may fail, other host-originated traffic may be sent out the wrong interface or nowhere at all.
Dynamic routing in use, ECMP configured, ECMP route received from neighbors.
Disable ECMP in ZebOS by setting "maximum-paths 1" in imish.
ECMP routes are correctly added to the Linux host.