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RE: OSPF over broadcast - drop mulitcast. posted 06/10/2004
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Karim,

I do apologise, I totally mis-read your question in relation to ethernet.

I have a rack online, I'll try a few scenarios and get back to you, but
using passive interface will block multicast and stop hellos yes. FYI,
neighbor statements are allowed only on point-to-multipoint or NBMA
networks.


Regards,
Mal
CCIE #10607


-----Original Message-----
From: Karim [mailto:karim_ccie@xxxxxxxxxxx]
Sent: 10 June 2004 23:18
To: malcolm.price@xxxxxxxxxxx
Cc: ccielab@xxxxxxxxxxxxxx
Subject: Re: OSPF over broadcast - drop mulitcast.


Mal,

This would be a perfect solution for RIP because adjacency doesn't depend on
hello but for ospf won't the passive interface stop hello packects and in
turn stops adjacency ??? what's your opinion ??


Regards,
Karim.

----- Original Message -----
From: "Malcolm Price" <malcolm.price@xxxxxxxxxxx>
To: "Karim" <karim_ccie@xxxxxxxxxxx>
Cc: <ccielab@xxxxxxxxxxxxxx>
Sent: Friday, June 11, 2004 1:08 AM
Subject: RE: OSPF over broadcast - drop mulitcast.


> Karim,
>
> I've programmed exactly the same problem using rip and that worked 100%.
> I.e. specifying  passive ethernet interface and a unicast neighbor.
>
> FYI, this is what I used:
>
> router rip
>  passive-interface Ethernet0
>  network 192.168.1.0
>  neighbor 192.168.1.100
>  distribute-list 2 out Ethernet0
>  distribute-list 1 in Ethernet0
>  no auto-summary
>
>
> I'd say yes, but try it first.
>
> Cheers,
> Mal
> CCIE #10607
>
>
>
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of
> Karim
> Sent: 10 June 2004 21:37
> To: ccielab@xxxxxxxxxxxxxx
> Subject: OSPF over broadcast - drop mulitcast.
>
>
> Hi all,
>
> Need your help in the following problem:
>
> Having two routers on the same ethernet segment, asked to drop multicast
> traffic betwen the two routers. Meanwhile make sure that adjacecny will
> still
> established between the two routers.
>
> I was thinking about a passive interface on both routers but passive
> interface
> will drop the adjacency. So would it be solved with passive plus neighbor
> command on both routers ?? Any ideas ??? am I thinking in the right
> direction
> ??
>
> Thanks in advance,
> Karim.
>
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