This Vlan exists in codfw and has a VRRP gateway configured between the two CRs there:
It's got no hosts connected to it, however:
The equivalent in eqiad has labstore, dbproxy, cloudmetrics hosts on it, as well as LVS load-balancers which front some services they host.
It seems to be that when we have a working model for the CloudLB we can revisit the eqiad Vlan and possibly migrate away? And if that is indeed the longer-term plan then we should remove the unused cloud-support1-b-codfw vlan in codfw, and get things working in the CloudLB POC instead?