A customer is finally upgrading from 4.x to 7.x and they're wondering whether to spare Gig ports for the new servers, questioning whether the UC servers really need the bandwidth. The topology is a centralized, six-server solution (Pub, 3 subs, 2 TFTP) supporting ~3000 devices (and expanding rapidly), including approximately 40 MGCP gateways.
I couldn't find anything in the SRND, so my first question is: what are the bandwidth requirements and the recommended NIC speed to go with on the servers? Next, do they really need teamed GIG interfaces with load-balancing for the expected traffic?
The premium (all gig and teamed) requires 12 Gigabit ports off their core switches versus 6 Gig ports for single, or keeping them on 100Mb if there's really no reason to allocate the ports.