HA cabling between two i10800 platforms running vCMP in 16 code
Two Devices (i10800) setup in Active / Standby - failover considerations and questions.
1) Can two dedicated HA interfaces inside single trunk be directly cross-connected between the two F5 hosts? OR do we need a switch in between this connection to do network type failover for vCMP ? I believe that I read somewhere that we can not directly connect two F5s with HA cable if we do vCMP ? (Please advise - see below)
2) If we have two 40G interfaces inside single TRUNK port for DATA traffic going into the F5, do we need to match the same for HA speed link? Or can the HA link interface be only two 10G ports? (lower speeds).
3) Can the HA VLAN for vCMP guests just be part of the same DATA trunk link? Basically not require separate HA physical connection? Is this supported/recommended?
I found the following document: https://support.f5.com/csp/article/K2397 that recommends:
Network issues may cause BIG-IP systems to enter into active-active mode. To avoid this issue, F5 recommends that you dedicate one interface on each system to perform only failover communications and, when possible, directly connect these two interfaces with an Ethernet cable to avoid network problems that may cause the systems to go into an active-active state.
BUT I'm little confused by the hardwire comment that it doesn't support vCMP? Is hardwire refering to cross-connect OR is this special optics cable outside of directly connecting the F5s via normal cable?
Thank you for feedback!