* Posts by Loopback0

1 post • joined 20 Apr 2010

Arista goes modular with 10 Gig E switches


Cisco wirespeed 32-port module

Actually, I would beg to differ. Cisco does not have a wirespeed L2/L3 32-port module for the Nexus 7000 anywhere near their roadmap.

The current backplane capacity of a fully configured Nexus 7000 is 230Gb/slot. This is 5x46Gb switch fabrics. Planning and assuming for N+1 resiliency of the fabric I would never build a linecard module that uses >194Gb.

The 32-Port Data Center Ethernet D1 series of modules that Cisco has been putting into customer hands to test recently are Layer-2 only, do not support any routing capability, and do not connect to the fabric at wirespeed. At best they may do 23 ports of 10Gb at speed, and for L3 operations need to traverse the fabric to another module to handle routing.

This looks a lot like the Cisco 8500 aberration from days gone by... a product that had a fortunately short lifespan before being obsoleted by something far better.


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