RE: Register message source Ip address? posted 01/23/2006
- Subject: RE: Register message source Ip address?
- From: "Gustavo Novais" <gustavo.novais@xxxxxxxxxxx>
- Date: Mon, 23 Jan 2006 18:56:20 -0000
- Content-class: urn:content-classes:message
- Thread-index: AcYgTiFeJF0vzO0sSpGxaKBiQS1TKwAAEAvw
- Thread-topic: Register message source Ip address?
I was wondering that... I'll do some testing tomorrow.
The thing is that "unarmed eyes" may think that the router itself who
is generating the messages is the DR for the RP segment too.
Thank you. If anybody can confirm this...
From: Bob Sinclair [mailto:bsinclair@xxxxxxxxxxxxxxxxxx]
Sent: segunda-feira, 23 de Janeiro de 2006 18:52
To: Gustavo Novais; ccielab@xxxxxxxxxxxxxx
Subject: Re: Register message source Ip address?
Interesting question. I do not see the specific answer in Williamson or
in the PIM-SM RFC 2362. By experiment: I am seeing the outgoing
interface as the source ip in the register packet (the interface closest
to the RP), not the ip address connected to the multicast server.
CCIE #10427, CCSI 30427
----- Original Message -----
From: Gustavo Novais <mailto:gustavo.novais@xxxxxxxxxxx>
Sent: Monday, January 23, 2006 1:03 PM
Subject: Register message source Ip address?
I have one doubt concerning PIM sparse mode and source
Imagine that we have two routers (7600) in order to provide
in all the segments that they are connected.
We have a multicast source on vlan 20 and a third router acting
as RP on
vlan 899. The DR router for vlan 20 will be responsible for
the register messages towards the RP while the RP itself does
not join a
SPT to the source.
What will be the IP address on the Register messages sent by the
vlan 20? Will it be the nearest IP to the RP (i.e. vlan 899 IP)
IP of the interface nearest to the source (to which the router
actually the DR)?
I have no lab to try this out at the moment...
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