At 08:49 AM 1/2/01, Chuck Church wrote:
> From Network Computing:
>
>http://www.nwc.com/1201/1201f1c1.html
Indeed, very nicely-written article. The best thing in it was the link to
the Cisco site on Unicast Reverse Path Forwarding, which I'd never heard
of. (I'd heard of Multicast RPF, but not unicast.)
I'm curious, is anyone using Unicast RPF? Does it work well? Any
performance problems with it?
Here's what it does:
"When Unicast RPF is enabled on an interface, the router examines all
packets received as input on that interface to make sure that the source
address and source interface appear in the routing table and match the
interface on which the packet was received. This 'look backwards' ability
is available only when Cisco express forwarding (CEF) is enabled on the
router, because the lookup relies on the presence of the Forwarding
Information Base (FIB). CEF generates the FIB as part of its operation."
For more info see:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/secur_c/scprt5/scdrpf.htm
Priscilla
>Chuck Church
>CCNP, CCDP, MCNE, MCSE
>Sr. Network Engineer
>Magnacom Technologies
>140 N. Rt. 303
>Valley Cottage, NY 10989
>845-267-4000 x218
>
>
>_________________________________
>FAQ, list archives, and subscription info:
>http://www.groupstudy.com/list/cisco.html
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
________________________
Priscilla Oppenheimer
http://www.priscilla.com
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
