From: Valiente, Rafael (rafael.valiente@bt.es)
Date: Thu Dec 12 2002 - 04:28:38 GMT-3
Hello
You can use an access-list to deny broadcast as interesting traffic
access-list 101 deny ip any host 255.255.255.255
access-list 101 permit ip any any
dialer-list 1 protocolo ip list 101
Or if you whish be more especific, use debug ip packet detail in order to
see the protocol (TCP/UDP and port).
Caution using debug if your router is not in the lab.
Regards
Rafa
-----Mensaje original-----
De: Tran Tien Phong [mailto:PhongTT2@FPT.COM.VN]
Enviado el: jueves 12 de diciembre de 2002 7:15
Para: erickbe@yahoo.com; ccielab@groupstudy.com
Asunto: RE: Why does broadcast still trigger the call?
But I had the command "no ip domain-lookup" in the config
-----Original Message-----
From: Erick B. [mailto:erickbe@yahoo.com]
Sent: Thu 12/12/2002 12:35 PM
To: Tran Tien Phong; ccielab@groupstudy.com
Cc:
Subject: Re: Why does broadcast still trigger the call?
This can happen if you type a bad command at the
prompt and it tries to do a DNS lookup. It sends that
request out all interfaces.
--- Tran Tien Phong <PhongTT2@FPT.COM.VN> wrote:
> Hi guys,
>
> When configuring DDR between 2 sites, I noticed that
> the broadcast still triggered the call. The "show
> dialer" displayed: Dial reason: source: x.x.x.x,
> destination: 255.255.255.255.
>
> The interesting traffic was defined: dialer-group 1,
> dialer-list 1 protocol ip permit
> Also, I used the command "no ip directed-broadcast"
> and "no cdp enable" at both sides and no routing
> protocols running between two sides.
>
> Anyone can tell me why broadcast packet still
> trigger the call and how to prevent this?
>
> Thanks
> Tran Tien Phong
> .
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