From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Sun Dec 02 2007 - 03:13:02 ART
This has been my experience too when try to test with "a router as a
multicast client" ... the issue is that if an IGMP join is done on the same
router that is supposed to send the PIM register (i.e. the DR), this doesn't
work.
The behavior is not an issue in real life, it is an issue during testing
only.
On Dec 2, 2007 9:26 AM, Yazan Mughrabi <m_yazan@hotmail.com> wrote:
> Hello All,
>
>
> Is there is a relationship between the location of the RP for multicast
> and
> the DR for a particular segment of multicast. What I have noticed is that
> inorder for sparse mode multicast to work with and RP you have to have the
> router which is closest to the RP act as the DR for that segment. Also I
> have
> noticed that this only applies it seems when you are talking about a FR
> segment.
>
> Example:
>
> For R1 to be able to ping a group which R5 has joined, R2 has to be the DR
> for
> the segment inbetween R2 and R1. After R2 is the DR R1 will be able to
> ping
> until I clear the Mroute of R2.
>
> However between R2 and R3 it seems it does not matter who is the DR for
> that
> segment.
>
> R5 <----Serial------> R4 <----Ethernet------> R3 <----Ethernet------>
> R2
> <--Serial--> R1
>
>
> When R1 is segment DR:
>
> (2.2.13.2, 224.30.30.30), 00:00:20/00:02:58, flags: PT
> Incoming interface: Serial1/0, RPF nbr 0.0.0.0
> Outgoing interface list: Null
>
> When R2 is segment DR:
>
> (200.0.12.2, 224.5.5.5), 00:01:28/00:03:20, flags: FT
> Incoming interface: Serial1/0, RPF nbr 0.0.0.0
> Outgoing interface list:
> Ethernet0/1, Forward/Sparse-Dense, 00:00:37/00:02:52
>
>
> Any light on the matter will be highly appreciated.
>
> Thanks in advance,
>
> Yazan
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Tue Jan 01 2008 - 12:04:28 ARST