[c-nsp] Network Size

Rodney Dunn rodunn at cisco.com
Fri Feb 4 13:55:24 EST 2005


And remember to think about your summarization
boundaries for the routing protocol when you
put the layout in place.

Rodney

On Fri, Feb 04, 2005 at 01:08:30PM -0500, Tim Durack wrote:
> A few years ago we were experiencing some serious pain running large
> (1000+ hosts) flat networks with proprietary switch meshing
> technology.
> 
> We followed Cisco's Campus network designs. You can find them all in
> the Networkers slides.
> 
> Put in an L3 core and /24 subnetted to the switch, and haven't looked
> back since. A /24 gives you ~250 hosts, that covers you for some
> pretty big access switches.
> 
> We had some initial resistance to the plan due to the amount of work
> involved in re-subnetting. I would encourage a rigid structure for how
> subnets are created. Per switch is simple - new switch, new subnet.
> 
> Tim:>
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