I have four MDS switches that I intend to use as part of a DR solution with native fibre channel and a Cisco ONS. I am moving from a Brocade solution and am interesting in the buffer credits for the ISL. Each link is 2 Gpbs and eventually they will be port channels when I get a couple more links.
255 buffer-to-buffer credits-are assigned to each port for optimal bandwidth utilization across distance.
Does that mean the B2B credits are automagically assigned for use or we have to set them manually. The max distance in my alternate loop is 35 km. We have found that the traffic is odd and the typical B2B numbers are just not good enough. So, can I set say 70 or 105 BB credits manually to each interface that will be an ISL? If so, then which of the BB Credit options do I use? The list is interesting:
Perf Bufs Admin.
Oddly enough, after googling a fair bit and going over my training notes, I can't find any doco on this anywhere.
Can someone please comment on this?