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cparkinson3
Beginner

Nexus 7K Engineering

Can anyone point me to some good docs that outline the purpose of fabric, M and F cards?

In paricular I need to know the relationship between M/F cards and how/why I would combine them in the 7K.

EG, if I have X nunber of subnets hanging on Y number of 5548s, split over 2* F cards, how many M cards would I need?

Do M cards load balance for redundancy?  Can M cards do vPC?

Etc etc.

I'd appreciate any pointers.

Thanks

Chris

1 REPLY 1
baracus11
Beginner

I am going to assume you are referring to the M1 and F2 series. I wouldn't combine these 2 in the same chassis unless you have a specific reason. They won't work unless you put them in different VDC's. For the most part, the F2 is much better and blows the pants off of the M1. I think the F2 is also less expensive? The M132XP has 80Gb of fabric while the F2 has 550Gb if you stack your 7K with 5 FAB2's.

Yes, the M1's basically combine their forwarding engines into a port-channel.