From: Varghese Thomas (vnthomas2@hotmail.com)
Date: Wed Nov 12 2003 - 12:27:35 GMT-3
Hello Richard,
Thanks for the email.
But the question is, what should be the expected/default behaviour?
Thanks in advnace.
Tx n Rd
----- Original Message -----
From: Richard L. Pickard
To: 'Varghese Thomas'
Sent: Tuesday, November 11, 2003 3:12 PM
Subject: RE: IP directed-broadcast
Why are you running the T code on your routers ?
You might want to just use 12.2.19a
Richard
//
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Varghese Thomas
Sent: Tuesday, November 11, 2003 12:57 PM
To: ccielab@groupstudy.com
Subject: IP directed-broadcast
Hello
I have following setup with all interfaces disabled for ip
direct-broadcast
and routers are running 12.2.15T5
--e0(172.16.1.0/24)-Router1-e1--(172.16.12.0/24)--
e0-Router2---e1(172.16.2.0/24).
When I ping from Router1 to either 172.16.2.0 or 172.16.2.255, Router2
responds and vice-versa; when Router2 pings eihter 172.16.1.0 or
172.16.1.255,
Router1 responds.
I was told the following - If the destination network is directly
attached and
ip forward directed-broadcasts is disabled then the router replies on
behalf
of the subnet but does not forward the broadcast out onto the subnet.
However I have another router running 12.2.8T5(IP/FW/IDS PLUS IPSEC
3DES)
which does not respond to such broad-cast addresses.
Which is normal behaviour? If it is not normal that router should
respond to
such ping request, how can I block it without using specific ACLs?
Thanks in advnace.
Tx n RD
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