[c-nsp] L3 Switch as a BGP Gateway

Jay Hennigan jay at west.net
Mon Jun 27 15:11:06 EDT 2011


On 6/27/11 11:59 AM, Jason Greenberg wrote:
> Can someone advise me as to why a 3750 L3 Switch (Metro Model) wouldn't outperform a 7300 series router as a multi-homed BGP gateway?  ISRs and Enterprise class routers are still quite a bit more expensive than the L3 Switches, but I'm starting to not understand why.   I understand that L3 switches are less feature rich on the routing end, but suppose that our ASAs are doing most of the complicated filtering.    I know it doesn't sound "right" to have a 3750G used in this manner, but I am having a hard time finding any real reason why not to do it.

The memory and number of routes are far too small to use these as a
border router.  Generally adequate for iBGP to inject customer routes
into your network but way too little for an Internet-facing border.

--
Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
Impulse Internet Service  -  http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV


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