From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Tue Jan 01 2008 - 15:49:08 ARST
The issue, we need to distinguish between "Exit Interface" and "source IP
address".
By default a multicast ping is sent on all "ip-enabled unshut interfaces"
For each interface the source IP will be the IP address of the interface.
In order to force a "SINGLE" exit interface, you need to use extended ping.
Joseph
On Dec 31, 2007 5:36 PM, backbone systems <backbone.systems@gmail.com>
wrote:
> Hey,
>
> sorry for this basic question . on a router if i have 3 ethernet and 1
> loop
> back interface with sparse-mode enabled. When i ping from the serial
> interface across the FR cloud
> how does the multicast choose the source interface.
>
> when i do debug ip mpacket i can see for different ping chooses different
> ether/lo interfaces
>
> What is the logic?
>
> BB
>
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