IP clasless command

By default, Cisco routers assume that if they have routes for any of the subnets of a classful network, they have routes for all of the existing subnets; any subnets they don't have routes for don't exist. So they won't use the default route (or any other supernet routes) for missing subnets.

But in a classless Internet, it's very often the case that an organization is assigned just one subnet, not an entire network, so they need to use the default route to reach sites that use other subnets of the same network.

Hi all.

Is there any command for ingoring DF bit from incoming packets to Cisco router?

if there are such commands please let me know.

thanks in advance.

regards, Santosh

Barry Margol> >

Hi all.

Is there any command for ingoring DF bit of icoming packet to Cisco router ?

if there are such commands please let me know.

thanks in advance.

regards, Santosh

Barry Margol> >

I don't think so - however - you can I think clear the bit as the packet enters the router and so achieve the same effect.

Look for [policy based routing].

This though is a "solution" that I would consider a last ditch effort.

If your traffic is TCP use "tcp adjust-mss xxxx".

Get Path MTU Discovery working.