From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Jul 30 2003 - 13:21:55 GMT-3
Ronald,
This is normal behavior since these two devices are directly
connected. When the router sources a multicast ping, it sources it out
all interfaces. Since the other device is directly on the other end of
the link, it will respond. If you added another router in the transit
path between R1 and R2 then you would have an issue.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Cell: 708-362-1418
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Ronald van Dommelen
> Sent: Wednesday, July 30, 2003 7:23 AM
> To: ccielab@groupstudy.com
> Subject: disable multicasting autorp ?
>
> Hi all,
>
> I'm having a strange problem when testing with multicasting and
> statically configured RP on router R1.
>
> network:
> R1--------R2 Bothe version 12.2.10
>
> Without configuring an ip pim rp-address on R2 I can ping the
> multicastgroup on R1. Is this normal ? I've seen that the autorp
> funtion is enabled. Can this be the reason and if so can I disable
this
> autorp ?
>
>
> Pieces of the configs:
>
> R1
>
> int Ethernet0
> ip add 192.198.1.1 255.255.255.0
> ip igmp join-group 233.33.33.33
> ip pim sparse-mode
> !
> int Serial0
> ip address 200.0.0.1 255.255.255.0
> ip pim sparse-mode
> !
> ip pim rp-address 192.168.1.1
>
>
> int Ethernet0
> ip add 192.198.2.1 255.255.255.0
> ip pim sparse-mode
> !
> int Serial0
> ip address 200.0.0.2 255.255.255.0
> ip pim sparse-mode
> !
>
>
> Thankx for the reply,
>
> Best regards,
>
> ronald van dommelen
> The Netherlands
>
>
>
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