[c-nsp] L3 to access layer

Adrian Chadd adrian at creative.net.au
Fri Mar 21 12:12:41 EDT 2008


(eww html mail?)

Stuff like the intel cards are shipped with "teaming" which lets you set
active/standby port selection (as well as classical etherchannel and
STP type protocols.)

This means the standby port won't be used for any outgoing traffic, thus
the switch won't learn the shared MAC on that card. It'll "see" unicast
flood, broadcast and perhaps multicast crap on the standby NIC but the
card will be throwing it all away.

Its not "true" redundancy by any classical stretch of the imagination but
it works fine in situations where your redundancy requirement is dead
chassis detection.




Adrian

On Fri, Mar 21, 2008, James Slepicka wrote:
> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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> enlighten me<br>
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> Adrian Chadd wrote:
> <blockquote cite="mid:20080321155053.GK20600 at skywalker.creative.net.au"
>  type="cite">
>   <pre wrap="">On Fri, Mar 21, 2008, James Slepicka wrote:
>   </pre>
>   <blockquote type="cite">
>     <pre wrap="">Maybe only a consideration in the data center, but you can't do NIC 
> teaming across multiple switches for fault tolerance.
>     </pre>
>   </blockquote>
>   <pre wrap=""><!---->
> Sure you can.
> 
> (Oh, you want me to tell you how?)
> 
> 
> 
> 
> 
> Adrian
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