[c-nsp] ARP and less specific interface entries

Peter Hicks peter.hicks at poggs.co.uk
Tue Mar 18 03:13:30 EDT 2008


Frank Bulk wrote:

> Why won't overlapping subnets work on an interface? What does that have to 
> do with the router's ability to ARP for an unknown MAC address? It's the 
> clients that are key, right? If they have the right mask and point to the 
> right gateway, the packets should be accepted by the router. And as for the 
> router forwarding traffic to the clients, if they're locally connected, 
> whether they are more broadly or narrowly defined as being locally 
> connected, it just needs to ARP?

Do a "debug arp" - are ARP who-has packets being broadcast for the addresses on 
one of the secondary subnets that is causing you a problem?

Do you see replies coming back?  Are they being rejected?


Peter

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