[c-nsp] router-switch redundancy

Saku Ytti saku+cisco-nsp at ytti.fi
Sun Aug 14 00:31:35 EDT 2005


On (2005-08-13 10:18 -0700), Mark Kent wrote:

> 
>            {Internet}
>             /      \
>            /        \
>        [routerA]   [routerB]
>         /   \       /    \
>        /     \     /      \
>       /       \   /        \
>      /         \ /          \
>     /           /            \
>    /           / \            \
>   /           /   \            \
>  -------------    ---------------
>  |           |    |             |
>  |  switch   |----|   switch    |
>  |           |    |             |
>  -------------    ---------------
 
> In a simple world where you have a /24 with a bunch of servers
> plugged into the switches, how do you have two ports on one
> router in the same broadcast domain?

 This is where 3750 really shines. You can easily get the above setup 
by connecting the routers to a stacked 3750's, and running LACP over
the redundant path, this way you'll also double your capacity.
 Whats even cooler, you can offer this all the way to the servers,
providing very effective and simple first switch redundancy to the 
servers.

-- 
  ++ytti


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