Think i figured it out The router will forward the subnet broadcast regardless of whether the no ip directed-broadcast command is configured on the ingress/egress interface or not - IF the destination subnet isn't locally attached to the router. Guess the router just does a route lookup and forwards it
If the destination network is directly attached and ip forward directed-broadcasts is disabled then the router replys on behalf of the subnet but does not forward the broadcast out onto the subnet The replies i was seeing were from subnets that were locally attached to non cisco firewalls Thanks for your help -----Original Message----- From: Priscilla Oppenheimer To: [EMAIL PROTECTED] Date: Thursday, November 21, 2002 6:36 PM Subject: Re: Router forwarding directed broadcasts [7:57780] >[EMAIL PROTECTED] wrote: >> >> I'm sure they will, but my routers still forwarding subnet >> broadcasts >> even with this line in a sh ip int output:- >> Directed broadcast forwarding is disabled > >Why don't you send us a config and some discussion of the situation and your >methods of testing. > >This group can be helpful, despite the numerous silly answers, but we can't >output a solution to your problem with no useful input. Troublehsooting >requires data. If you can give us data, perhaps we can help you. The end >result could be that everyone benefits. > >Also, please use a meaningful title on your messages. Thanks > >_______________________________ > >Priscilla Oppenheimer >www.troubleshootingnetworks.com >www.priscilla.com > >> >> Thanks >> -P >> >> > 5 games of cricket Between Australia and England have just >> commenced... >> > Australia won the first game very convincingly >> > >> > Australia should go a clean sweep >> > >> > -- >> > Regards, >> > >> > Peter Kingston >> > Telstra BigPond Direct >> > Freecall 1800 066 594 >> > ""Priscilla Oppenheimer"" wrote in message >> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> > > Well you better explain this to us Yankees. Our baseball >> season is over >> > > unfortunatley, and now all we have is football (ugh). Well >> we have hockey >> > > and basketball too, I guess, and they're a litte better! :-) >> > > >> > > Priscilla >> > > >> > > Peter Kingston wrote: >> > > > >> > > > I just as a little bit of friendly rivalry, >> > > > >> > > > I believe there is more than yourself confused in London, >> > > > naming your >> > > > cricketers.... 5 zips looks like a fair chance >> > > > >> > > > -- >> > > > Regards, >> > > > >> > > > Peter Kingston >> > > > Telstra BigPond Direct >> > > > Freecall 1800 066 594 >> > > > wrote in message >> > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> > > > > Someone asked me a question which confused me:- >> > > > > If i ping a network broadcast from a host on a different >> > > > network, which >> > > > > passes through a cisco router why do i get replies from >> > > > certain devices. >> > > > > >> > > > > The router has directed broadcast forwarding disabled. >> > > > > I thought the router would therefore drop the packet >> > > > > >> > > > > Any thoughts >> > > > > Thanks >> > > > > -P Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=57858&t=57780 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
