09-19-2013 07:59 AM - edited 03-07-2019 03:34 PM
Hi,
I've been struggling making multicast work across two DC. I'm able to see the sources when I do show ip mroute, but no traffic is going between recievers and source, only I can see traffic generated from local source when I do show ip mroute summary. I've been trying back and fourth with rp's, msdp, anycast-rp and mdt and enabled ip pim sparse-mode on all links that I know of including the update source loopback for BGP, also I have redistributed the IP's of the RP's into to BGP
The configuration snippets below are from one of the devices
Router# sh ip mroute vrf OTV
IP Multicast Routing Table for VRF "OTV"
(*, 232.0.0.0/8), uptime: 23:47:11, pim ip
Incoming interface: Null, RPF nbr: 0.0.0.0
Outgoing interface list: (count: 0)
(*, 239.1.1.1/32), uptime: 1d03h, ip pim igmp
Incoming interface: loopback5, RPF nbr: 192.168.1.103
Outgoing interface list: (count: 1)
port-channel5, uptime: 1d01h, igmp
(10.8.6.241/32, 239.1.1.1/32), uptime: 00:03:36, pim mrib ip msdp
Incoming interface: mti21, RPF nbr: 10.8.0.1, internal
Outgoing interface list: (count: 1)
port-channel5, uptime: 00:03:36, mrib
(10.8.6.245/32, 239.1.1.1/32), uptime: 00:06:26, pim mrib ip msdp
Incoming interface: mti21, RPF nbr: 10.8.0.2
Outgoing interface list: (count: 1)
port-channel5, uptime: 00:06:26, mrib
(10.8.6.254/32, 239.1.1.1/32), uptime: 1d01h, ip mrib pim
Incoming interface: port-channel5, RPF nbr: 10.8.6.254
Outgoing interface list: (count: 1)
port-channel5, uptime: 1d01h, mrib, (RPF)
Router# sh ip mroute su vrf OTV
IP Multicast Routing Table for VRF "OTV"
Total number of routes: 5
Total number of (*,G) routes: 1
Total number of (S,G) routes: 3
Total number of (*,G-prefix) routes: 1
Group count: 1, rough average sources per group: 3.0
Group: 232.0.0.0/8, Source count: 0
Source packets bytes aps pps bit-rate oifs
(*,G) 0 0 0 0 0.000 bps 0
Group: 239.1.1.1/32, Source count: 3
Source packets bytes aps pps bit-rate oifs
(*,G) 3 4326 1442 0 0.000 bps 1
10.8.6.241 0 0 0 0 0.000 bps 1
10.8.6.245 0 0 0 0 0.000 bps 1
10.8.6.254 4673 6757154 1445 0 5.013 kbps 2
Router# sh run vrf OTV
version 6.1(2)
vrf context OTV
ip pim rp-address 192.168.1.103 group-list 224.0.0.0/4
ip pim ssm range 232.0.0.0/8
ip pim pre-build-spt
ip msdp originator-id loopback6
ip msdp peer 192.168.2.101 connect-source loopback6
ip msdp peer 192.168.2.102 connect-source loopback6
rd 65512:13
mdt default 232.0.0.0
no mdt enforce-bgp-mdt-safi
address-family ipv4 unicast
route-target import 65512:13
route-target export 65512:13
router bgp 65512
vrf OTV
address-family ipv4 multicast
redistribute direct route-map CONNECTED
address-family ipv4 unicast
redistribute direct route-map CONNECTED
interface loopback5
vrf member OTV
ip address 192.168.1.103/32
ip pim sparse-mode
interface loopback6
vrf member OTV
ip address 192.168.2.103/32
ip pim sparse-mode
interface port-channel5
description S1-OTV-Join
mtu 9216
vrf member OTV
ip address 10.8.6.253/30
ip pim sparse-mode
ip igmp version 3
09-19-2013 01:46 PM
Hi,
Does the OTV VRF has anything to do with OTV? If yes, I remember pim can not be enabled on otv join interface.
HTH,
Lei Tian
Sent from Cisco Technical Support iPhone App
09-20-2013 12:19 AM
Hi,
thats correct we have OTV vdc connected to the core network. PIM is not enabled on the join - interface in the OTV vdc. The output above is from the core network, and the routers (VDCs) are directly connected via dark fiber so no ISP blocking multicast.
09-20-2013 06:41 AM
Hi,
Can you post the topology, and the multicast group, source IP that is in question?
HTH,
Lei Tian
09-20-2013 07:45 AM
Hi,
from the OTV vdc I have the following:
interface port-channel6
description Join-interface
mtu 9216
ip address 10.8.6.254/30
ip igmp version 3
interface Overlay1
description Overlay interface
otv isis authentication-type md5
otv isis authentication key-chain xxx
otv join-interface port-channel6
otv control-group 239.1.1.1
otv data-group 232.239.1.0/24
otv extend-vlan xxx
no shutdown
I have verified IP connectivity by pinging the different Join-interfaces from each other. OTV functiones when I've configured the overlay with unicast. The displayed multicast config from the Router above is from router in DC C. I have also attached the multicast config from DC A and B
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