[nsp] Cisco 1720 or above Firewall using DHCP outside

Charles H. Gucker cgucker at cv.net
Thu Nov 20 17:50:21 EST 2003

> |>ip route Ethernet1
> |>
> |>any questions? :)
> |
> | Yes.  Doesn't the above statement mean that the router performs an
> | ARP request for any destination it's trying to reach?  Sounds like
> | concentrated evil to me, and it would depend on "ip proxy-arp" to be
> | enabled in the upstream router, which - although default - is not a given.
> |
> Yes.
> My guess is that even though his provider hands out a DHCP address that the
> gateway address is static and could be configured in the route statement.
> =========
> bep

Well, the only thing constant with the upstream interface is it's MAC/ARP
responce.  Since multiple possible networks exist for the DHCPable networks,
you won't be able to statically assign the route.  


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