Re: IGMPv3 EXCLUDE filter Source problem
mighty <[email protected]>
| Newsgroups | gmane.ietf.magma |
|---|---|
| Message-ID | <[email protected]> |
"TIMER > 0" refers to "Source Timer Value", and section 6.2.3 of RFC 3376 explains that If a source record has a running timer with a router filter-mode for the group of EXCLUDE, it means that at least one system desires the source. It should therefore be forwarded by a router on the network. On 6/5/07, tech engr <[email protected]> wrote: > > Hi, > > I looked up the RFC and i am bit confused now. RFC says EX and Timer > 0 then, suggest to forward traffic from source. If this is the case, why do we need to define EX - SOURCE mode? what is the purpose of EX - SOURCE group record? Can you please explain? > > Thank you > Steven > > ________________________________ From: mighty [mailto:[email protected]] > Sent: Tuesday, June 05, 2007 2:29 PM > To: John Zwiebel > Cc: [email protected] > Subject: Re: [magma] IGMPv3 EXCLUDE filter Source problem > > > > section 6.3 of RFC 3376, "IGMPv3 Source-Specific Forwarding Rules", outlines the forwarding suggestions the IGMP module should make to the multicast router. in the case of EXCLUDE group record with source records, the table reads: > > Group > Filter-Mode Source Timer Value Action > ----------- ------------------ ------ > > EXCLUDE TIMER > 0 Suggest to forward traffic > from source > > EXCLUDE TIMER == 0 Suggest to not forward > traffic from source > (DO NOT remove record) > > > > On 6/5/07, John Zwiebel <[email protected]> wrote: > > > > > > You might have more luck if you talk to the cisco IOS folks. > > > > > > However, ask yourself how you would translate an EXCLUDE to a PIM join/prune message > > And qualify that by remembering that the emphasis for IGMPv3 deployment is for SSM. > > > > > > Then consider implementation vs the protocol. > > > > > > Finally, think about a real world scenario where you'd want to receive > > everything except a specific source. > > > > > > If you really have a case where this is required, then you might want to tell > > the IOS folks that their implementation isn't meeting your requirements. > > > > > > On Jun 5, 2007, at 10:28 AM, tech engr wrote: > > > > > > Hi, > > > > Can anyone help me with this ? > > > > Steven > > > > tech engr < [email protected]> wrote: > > > > Hi, > > > > I tried to use EXCLUDE - SOURCE option in our cisco 6400 with IOS ver 12.3. Using IXIA tester I sent EXCLUDE - SOURCE with ip 10.6.37.2 in multicast group 239.1.1.144. I have the video server running behind the Cisco router on 10.6.37.2. We expect the video should not be forwarded to IXIA from 10.6.37.2. But, It is getting forwarded. > > > > Then, I looked into cisco igmp groups and it says EX group 239.1.1.144 and src 10.6.37.2. Cisco is adding multicast route for this group but, it is not excluding src 10.6.37.2 . Have you folks ever used EX-SRC option? Can you please let me know if you guys ever able make this work? > > > > Thanks > > Steven > > ________________________________ Sucker-punch spam with award-winning protection. > > Try the free Yahoo! Mail Beta._______________________________________________ > > magma mailing list > > [email protected] > > https://www1.ietf.org/mailman/listinfo/magma > > > > > > > > ________________________________ Get the free Yahoo! toolbar and rest assured with the added security of spyware protection. > > _______________________________________________ > > magma mailing list > > [email protected] > > https://www1.ietf.org/mailman/listinfo/magma > > > > _______________________________________________ > > magma mailing list > > [email protected] > > https://www1.ietf.org/mailman/listinfo/magma > > > > > > > > ________________________________ Get your own web address. > Have a HUGE year through Yahoo! Small Business. > > ________________________________ Moody friends. Drama queens. Your life? Nope! - their life, your story. > Play Sims Stories at Yahoo! Games. > > > >