On Tue, 8 Jan 2002, Hunt Lee wrote:

> But why / when would the destination prefixes match the summary address
> only??

Hi :)

For example, if you have three static routes pointing to three seperate
interfaces each of which is a /25, and you summarise as a /23, the unused
/25 would match the summary address only.

ie:
10.1.2.0/23     ->      Null0 (summary address)

10.1.2.0/25     ->      Serial0 (static route)
10.1 2.128/25   ->      Serial1 (static route)
10.1.3.0/25     ->      Serial2 (static route)
10.1.3.128/25   ->      Null0 (no static route, matches the summarised
                        route)

Rgds,





- I.

--
Ian Henderson CCNA, CCNP
Network Engineer, iiNet Limited




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