Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP vCMP
Known Affected Versions:
11.6.0, 11.6.1, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2
Fixed In:
13.0.0, 12.1.3, 11.6.2
Opened: Oct 12, 2016 Severity: 3-Major
vCMP guests may be re-configured to use MAC addresses based off an all zero MAC address (00:00:00:00:00:00). The 'tmsh show net vlan' command will show the vlan interfaces having mostly 0's in the MAC address: ------------------------------------- Net::Vlan: external ------------------------------------- Interface Name external Mac Address (True) 00:00:00:00:00:01 MTU 1500 Tag 3702 Customer-Tag ------------------------------------- Net::Vlan: internal ------------------------------------- Interface Name internal Mac Address (True) 00:00:00:00:00:02 MTU 1500 Tag 3703 Customer-Tag
This can cause network issues and conflicts if occurring on multiple guests in the same VLAN as the same MAC addresses will be used.
For this to manifest the vCMP host vcmpd process will have to have had a prior crash or be killed. In this scenario vcmpd on restart uses a default zero-base MAC address for the guests. The guests will not use the new zero-based MAC until services are restarted on the guest, on which the new MAC address will take effect.
Restart the guest from the hypervisor.
vCMP no longer uses zero-based MACs on vcmpd crash/kill.