From: Ahmed Mamoor Amimi (mamoor@xxxxxxxx)
Date: Fri Apr 12 2002 - 04:09:10 GMT-3
ip pim nbma-mode dont work with ip pim sparse-dense-mode (dense-mode). U
should use ip pim sparse-mode only, then it should work.
Cut and Paste from CCO :
When this command is configured, each Protocol Independent Multicast (PIM)
Join message is kept track of in the outgoing interface list of a multicast
routing table entry. Therefore, only PIM WAN neighbors that have joined for
the group will get packets sent as data link unicasts. This command should
only be used when the ip pim sparse-mode command is configured on the
interface. This command is not recommended for LANs that have natural
multicast capabilities.
My source is :
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_r
/iprprt3/1rdmulti.htm#xtocid46
-Mamoor
----- Original Message -----
From: hSzeto Jeff <jytszeto@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, April 13, 2002 10:13 AM
Subject: Multicast Question, please help!
> Hi,
>
> --f0/1--R1--s0/0--------FR-------s0-R2
>
> The serial interfaces are main interfaces
> Sparse-dense-mode is used in all interfaces
> R1 is the auto-RP and agent
> R1's f0/0 has join the group 230.0.0.1
> The problem is R2 cannot ping the group 230.0.0.1
>
> Hers's are the relevant config, please tell me what I am doing wrong.
>
> R1
>
> ip multicast-routing
>
> int s0/0
> ip pim nbma-mode
> ip pim sparse-dense-mode
>
> int f0/1
> ip igmp join-group 230.0.0.1
> ip pim sparse-dense-mode
>
> ip pim send-rp-announce Loopback0 scope 15 group-list 80
> ip pim send-rp-discovery scope 15
>
> access-list 80 permit 230.0.0.1
>
> R2
>
> ip multicast-routing
>
> int s0
> ip pim nbma-mode
> ip pim sparse-dense-mode
>
> When I show the mroute table of R1, I saw this:
>
> (*, 230.0.0.1), 00:00:06/00:00:00, RP 140.100.1.1, flags: SJCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> FastEthernet0/1, Forward/Sparse-Dense, 00:00:06/00:02:53
>
> It seems the outgoing interface does not include s0/0.
>
> Thank you in advance.
>
> Jeff
>
>
>
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