Re: Bidirectional PIM not working

Jorge,

You shouldn't have to do anything special besides enbaling bidir and
configuring the RP in bidir mode. When you do "show ip pim rp mapping" on
all routers does it list the RP in bidir-mode? If not, use the command:

ip pim rp-address x.x.x.x bidir

-hth

On Mon, Dec 21, 2009 at 11:43 AM, Jorge Cortes
<jorge.cortes.cano_at_gmail.com>wrote:

> I apologize for any duplicates of this email, but I stopped receiving
> emails from this mailer list, so in case my previous email didn't make
> it I am resending. The problem description is in the original email
> below.
>
> Thanks for your help!
>
>
> ---------- Forwarded message ----------
> From: Jorge Cortes <jorge.cortes.cano_at_gmail.com>
> Date: Sun, Dec 20, 2009 at 10:22 PM
> Subject: Bidirectional PIM not working
> To: Cisco certification <ccielab_at_groupstudy.com>
>
>
> Hi Team,
>
> I have the following topology:
>
> 228.1.1.1|===R1===R5===SW2===SW4===|228.1.1.1
>
> I'm using PIM SM and BSR and R5 is the RP for all MCAST groups (only
> group 228.1.1.1 is defined however)
> Before enabling BiDir PIM when I ping 228.1.1.1 from any of the
> devices shown above I get replies from both R1 and SW4, so there are
> no RPF failures and everything is working as expected. Now I enable
> BiDir across the network, including RP, and after that whenever I ping
> 228.1.1.1 from either R1 or R5 I only get a reply from R1, but not
> from SW4, however when I ping 228.1.1.1 from SW2 or SW4 I still get
> replies back from both R1 and SW4. I also noticed that just after
> enabling BiDir I got the following message from R5:
>
> *Dec 21 04:12:54.903: %PIM-6-INVALID_RP_JOIN: Received (*, 228.1.1.1)
> Join from 155.1.58.8 for invalid RP 150.1.5.5
>
> 155.1.58.8 is the IP Add of SW2 on the link between SW2 and R5
>
> I deleted group 228.1.1.1 from R1 and when I ping the group from R1 or
> R5 I don't get any replies, but when pinging from SW2 or SW4 I still
> get the reply from SW4. If I disable BiDir everything works fine
> again. The output of show ip mroute on R1 and R5 is the following:
>
> R1:
>
> (*, 228.1.1.1), 00:00:13/00:02:53, RP 150.1.5.5, flags: BCL
> Bidir-Upstream: Serial0/0/0.1, RPF nbr 155.1.0.5
> Outgoing interface list:
> FastEthernet0/0, Forward/Sparse, 00:00:13/00:02:46
> Serial0/0/0.1, 228.1.1.1, Bidir-Upstream/Sparse, 00:00:13/00:00:00
>
> R5:
>
> (*, 228.1.1.1), 00:27:01/00:03:15, RP 150.1.5.5, flags: B
> Bidir-Upstream: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0/0/0, 155.1.0.1, Forward/Sparse, 00:01:25/00:03:02
> FastEthernet0/0, Forward/Sparse, 00:26:57/00:03:15
>
> I really appreciate if someone could provide some help here.
>
> Thanks!
>
> Jorge
>
>
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>
>

-- 
Bryan Bartik
CCIE #23707 (R&S, SP), CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net