nanog mailing list archives
RE: IPv4 Multicast
From: "Rens" <rens () autempspourmoi be>
Date: Wed, 26 May 2010 15:21:28 +0200
I have all those things you mentioned below. The VLC server (10.0.1.2) sends out 2 streams on 239.255.0.1 & 239.255.0.2 I see both in SAP, when I try to join 239.255.0.2, nothing happens in VLC and below you have the output of my routers & switches at that time: On my RP router I see for show ip mroute: (*, 239.255.255.255), 5d04h/00:03:26, RP 172.16.0.2, flags: SJCL Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 1d06h/00:03:26 FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:41 (10.0.1.2, 239.255.255.255), 1d06h/00:03:28, flags: LT Incoming interface: FastEthernet0/0.200, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 1d06h/00:03:26 (*, 239.255.0.2), 00:01:10/00:03:19, RP 172.16.0.2, flags: S Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 00:01:10/00:03:19 (*, 239.255.255.250), 00:07:19/00:03:07, RP 172.16.0.2, flags: S Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 00:07:22/00:03:03 (*, 239.195.255.255), 1d06h/00:02:39, RP 172.16.0.2, flags: S Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 00:01:24/00:02:39 (*, 224.2.127.254), 5d04h/00:03:10, RP 172.16.0.2, flags: SJCL Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 1d06h/00:03:10 FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:38 (*, 224.0.1.40), 5d04h/00:02:40, RP 172.16.0.2, flags: SJCL Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: FastEthernet0/1, Forward/Sparse, 1d06h/00:02:59 FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:40 On my other router I have: (*, 239.255.255.255), 5d04h/stopped, RP 172.16.0.2, flags: SJCL Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:54 (10.0.1.2, 239.255.255.255), 1d06h/00:02:58, flags: LJT Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 1d06h/00:02:54 (*, 239.255.0.2), 00:01:55/00:02:56, RP 172.16.0.2, flags: SJC Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 00:01:55/00:02:56 (*, 239.255.255.250), 00:08:04/00:02:53, RP 172.16.0.2, flags: SJC Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 00:08:04/00:02:53 (*, 239.195.255.255), 5d04h/00:02:50, RP 172.16.0.2, flags: SJC Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 00:02:08/00:02:50 (*, 224.2.127.254), 5d04h/00:02:48, RP 172.16.0.2, flags: SJCL Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:48 (*, 224.0.1.40), 5d04h/00:02:52, RP 172.16.0.2, flags: SJCL Incoming interface: FastEthernet0/1, RPF nbr 192.168.0.2 Outgoing interface list: FastEthernet0/0.200, Forward/Sparse, 5d04h/00:02:52 On the switch where the RP is connected: Vlan Group Version Port List --------------------------------------------------------- 200 224.0.1.40 v2 Gi2/24 200 224.2.127.254 v2 Gi2/24 200 239.255.255.255v2 Gi2/24 On the switch where the receiver is connected: Vlan Group Type Version Port List ----------------------------------------------------------------------- 200 224.0.1.40 igmp v2 Gi0/24 200 224.2.127.254 igmp v2 Gi0/1, Gi0/24 200 239.195.255.255 igmp v2 Gi0/1, Gi0/24 200 239.255.0.2 igmp v2 Gi0/1, Gi0/24 200 239.255.255.250 igmp v2 Gi0/2, Gi0/24 200 239.255.255.255 igmp v2 Gi0/1, Gi0/24 -----Original Message----- From: Jamie Sobczyk [mailto:lanson9 () cox net] Sent: vendredi 21 mai 2010 16:52 To: rens () autempspourmoi be Cc: nanog () nanog org Subject: RE: IPv4 Multicast Make sure you have "ip multicast-routing" on both routers. On the router interfaces, make sure you have "ip pim sparse-mode" On both routers, make sure you have the same rp address assigned and that you can ping this ip address from both routers. (I prefer to make it a loopback interface) "ip pim rp-address w.x.y.z" Also, make sure that routing is setup on your routers so that your receiver can ping your sender. On your routers you should be able to see the source unicast address and multicast address by typing "show ip mroute" you should see something like this: (*, 239.192.3.47), 7w0d/00:02:59, RP 10.31.0.1, flags: S Incoming interface: Null, RPF nbr 0.0.0.0 Outgoing interface list: Port-channel15, Forward/Sparse, 7w0d/00:02:59, H (10.5.9.51, 239.192.3.47), 4w5d/00:03:27, flags: TA Incoming interface: Port-channel15, RPF nbr 10.7.193.138 Outgoing interface list: Port-channel17, Forward/Sparse, 4w5d/00:02:49, H On your switches, with igmp snooping enabled, you should be able to type: "show ip igmp snooping group" and see something like Vlan Group Type Version Port List ----------------------------------------------------------------------- 24 239.192.3.47 igmp v2 Gi1/0/21 That port listed is the port of the requester. -----Original Message----- I have setup a lab for this multicast. VLC receiver - 3560G - 1841 - 1841 - 4503 - VLC sender The 2 switches only provide L2 access, they have IGMP snooping active On both 1841's I have pim parse-mode & sap listen on all interfaces + configured a static RP, the one closest to the sender. With my VLC receiver I can see the channels via SAP, but when I join the multicast group I don't receive anything. Could someone help me to troubleshoot this? Thanks in advance, Rens
Current thread:
- IPv4 Multicast Rens (May 11)
- Re: IPv4 Multicast Mikael Abrahamsson (May 11)
- RE: IPv4 Multicast Rens (May 12)
- Re: IPv4 Multicast Colby Glass (May 18)
- RE: IPv4 Multicast Tony Bunce (May 18)
- RE: IPv4 Multicast Rens (May 21)
- RE: IPv4 Multicast Rens (May 12)
- <Possible follow-ups>
- RE: IPv4 Multicast Jamie Sobczyk (May 21)
- Re: IPv4 Multicast Anton Kapela (May 21)
- Re: IPv4 Multicast Jared Mauch (May 25)
- RE: IPv4 Multicast Rens (May 26)
- Re: IPv4 Multicast Everton Marques (May 26)
- RE: IPv4 Multicast Rens (May 26)
- RE: IPv4 Multicast Rens (May 26)
- txt.att.net operators Mike Walter (May 26)
- Re: txt.att.net operators Christopher Morrow (May 26)
- RE: IPv4 Multicast Rens (May 31)
- Re: IPv4 Multicast Mikael Abrahamsson (May 11)