Mihai Tanasescu wrote:
Hello again,
On a closer look I see for example:
on RC1:
RO-BUC-RC1#sh ip pim neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address
Prio/Mode
195.170.181.18 POS2/0/0 3d00h/00:01:31 v2 1 /
S P
195.170.181.158 GigabitEthernet7/6 2d22h/00:01:33 v2 1 /
DR S P
195.170.181.54 GigabitEthernet7/3 2d22h/00:01:44 v2 1 /
DR S P
195.170.181.58 GigabitEthernet7/4 2d22h/00:01:28 v2 1 /
DR S P
195.170.181.170 GigabitEthernet7/2 00:02:53/00:01:18 v2 1 /
DR S P
195.170.181.146 GigabitEthernet7/5 00:02:59/00:01:43 v2 1 /
DR S P
on the RD1 (vrf-lite directly connected to this)..choosing one VRF for
which I see an entry above on RC1 for neighbor:
RO-BUC-RD1#sh ip pim vrf vrf_business neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address
Prio/Mode
I think the problem might be from here but don't know how to fix it :(
I was wrong.
If I try the same on the vrf_default_3 (the gateway obtained by route
leaking for vrf_business), then I can see the pim neighborship relation.
With a tcpdump on my linux machine with VLC I can see the IGMP v2 report
messages but no reply whatsoever.
Any help ?
-
Mihai
Mihai Tanasescu wrote:
Hi Arie,
Sorry for top posting but I guess this time it will be easier as your
answer was also above mine:)
This is my network topology and schematic:
http://www.screenshots.cc/show.php/15014_draft.jpeg.html
Router C (in my schema RD-1):
RO-BUC-RD1#sh ip mroute count
IP Multicast Statistics
1 routes using 544 bytes of memory
1 groups, 0.00 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits
per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets
received: 0
RO-BUC-RD1#sh ip mroute
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.0.1.40), 2d22h/00:02:15, RP 172.16.103.237, flags: SJPCL
Incoming interface: GigabitEthernet1/24, RPF nbr 195.170.181.157
Outgoing interface list: Null
On one of the VRFs:
http://www.pastebin.org/50188
http://www.pastebin.org/50190
On all interfaces interconnecting RC1 and RD1 I have:
ip pim sparse-dense mode
on RC1 I have ip multicast-routing and ip pim rp-address 172.16.103.237.
If I connect with a laptop in a port in RC1 multicast works.
in RD1 I have:
ip pim rp-address 172.16.103.237
ip pim vrf vrf_business rp-address 172.16.103.237
ip pim vrf vrf_default_1 rp-address 172.16.103.237
ip pim vrf vrf_default_2 rp-address 172.16.103.237
ip pim vrf vrf_default_3 rp-address 172.16.103.237
ip pim vrf vrf_default_4 rp-address 172.16.103.237
(VRF business takes default route from vrf_default_3)
What am I missing or what would be the workaround in my case of setup ?
Thanks and sorry for the long post,
Mihai
Arie Vayner (avayner) wrote:
Hmm...
Could you share some "show ip mroute" and "show ip mroute count"
outputs
both for global and vrf mode on router C?
First thing to check would be the RPF path for the source - do you have
a route back to the source through all the interfaces on router C?
Arie
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mihai Tanasescu
Sent: Tuesday, July 08, 2008 20:55 PM
To: [email protected]
Subject: [c-nsp] VRF-Lite & Multicast question
Hello all,
I have just started studying multicast for accomplishing a task that
I've been giving and don't know where / what I am doing wrong.
My setup is something like the following:
RP ---> Router A --- iBGP ---> Router B --- eBGP --> Router C
(vrf-lite)
between Router B and Router C I have 5 links (4 are vrf-lite in
Router C, the 5th is in the global table and use for MPLS ldp).
I have configured on each router:
ip multicast-routing (in C for example for both global and VRF) , ip
pim
sparse-dense-mode on interfaces and the RP.
If I connect with a cable in Router A I can view the multicast stream.
Same if I connect in Router B.
But in Router C it doesn't work (neither in the global table,
neither in
the VRFs from vrf-lite implementation).
Can you help with an advice or what I could be doing wrong ? (I'm
just a
beginner/newbie when it comes to mcast)
Thanks,
Mihai
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