IS it possible to operate ABB 800xA on a Cisco REP Network instead of RNRP?
Can ABB 800xA operate with Cisco REP instead of implementing RNRP (which will require a redisign of the network)?
You MUST use RNRP - It is NOT optional.
The official answer about compatability between RNRP and other redundancy protocols is allways "no" - because its easier that way. Guaranteeing that RNRP will run with multiple other vendor solutions over multiple generations is always going to be a real problem.
If you can simply disable REP on the cisco routers, then that would probably be your easiest solution. Otherwise talk to your local ABB rep.
Don't know REP.
RNRP need (no option) free multicasting (IGMP must be off)
RNRP redundancy is geared towards two (2) independently operating networks: primary and secondary. Do NOT tunnel primary and secondary in any trunk or VLAN on same wire/fiber.
A ring is one (1) network. An uncontained storm may kill the ring. Fault searching a ring is much more difficult than a flat network. I've seen a firmware update bringing down an entire ring.
Two separated networks is more expensive since hardware need to be truly doubled (2x), but in the same something we can call TRUE redundancy.
A redundant RNRP network could in theory be built upon two physically isolated rings.
RNRP can run on single or redundant network.
Customer chooses level of redundancy.