Last Modified: Oct 16, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.4, 11.6.1, 11.6.2
Fixed In:
13.0.0, 12.1.2 HF1, 11.6.3, 11.5.5
Opened: Oct 20, 2016 Severity: 3-Major
If a vlangroup is configured within a vCMP guest, under some circumstances unicast packets may be looped between the switchboard and the BIG-IP guest. This is most likely to occur when the guest is part of an HA pair.
High CPU utilization and potentially undelivered packets.
vCMP guest, vlangroups.
Correctly configure proxy ARP excludes on the vlangroup and increase the FDB timeout by setting the vlan.fdb.timeout database key to a larger value such as 3600.
Packets are no longer looped between vlangroup children on vCMP guests.