[LARTC] Multicast routing problem
Hi, I'm trying to route multicast between 2 LANs using a GRE tunnel. The setup is: B to C is a GRE tunnel running over PPPoE. B is the multicast router. A is on the same LAN as B. The same ethernet adapter is used for both the LAN and PPPoE connections. I've setup smcroute since I only need static routing. Multicasts sent from C (the remote machine) to B over the tunnel are properly routed by B and available over the LAN to A. However, multicast packets generated by A (on the LAN), while received at B, are not routed to over the tunnel to C. The multicast routes look fine, and I can see the input counters growing when I receive multicasts on the LAN. However tcpdump does not show any activity on the tunnel, the packets just seem to get dropped at B. Kernel 2.6.16. Any help appreciated. Regards, -- Raju -- Raj Mathur [EMAIL PROTECTED] http://kandalaya.org/ GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F It is the mind that moves ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
[LARTC] Multicast routing
How do the Multicast routers sniff IGMP/MLD messages from the network? I checked the XORP, pimd etc. Most of them just open a RAW socket with protocol set to IPPROTO_IGMP. But using this the router gets the packets addressed to 224.0.0.1 only. How does it receive IGMPv2 and IGMPv3 membership reports sent by other hosts? Thanks, Sachin ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
[LARTC] Multicast Routing & mDNS
Hi, I'm investigating getting iTunes sharing to work within a VPN. Does anybody know where I could find some documentation on forwarding mDNS packets between two subnets connected by two Linux routers? The LARTC guide just stops mid chapter. Thanks, James. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The contents of an attachment to this email may contain software viruses that could damage your own computer systems. Whilst The Spur Group of Companies has taken every precaution to minimise the risk, we cannot accept liability for any damage that you sustain as a result of software viruses. ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
RE: [LARTC]Multicast routing between two subnets
Emcast has the “good” idea to set the default ttl to 1. So be careful !!! Emcast –t 2 and it passes the router… I hope nobody else will lose so much time ! Bye Yoann From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Allain Yoann Sent: vendredi 8 avril 2005 15:03 To: lartc@mailman.ds9a.nl Subject: [LARTC]Multicast routing between two subnets Hello. I’m new to this list. I’m trying to set up multicast routing between two networks: Internet ^ | Windows box | | UserModeLinux A <-> Colinux Router <-> UserModeLinux B running mrouter I’m using a 2.6.8 kernel on Colinux with Multicast/Multicast routing support activated. The UMLs are supporting Multicast. I’m trying to make A and B communicate over a Multicast address with the emcast utility. Mrouter on Colinux is receiving the membership report from A end B. Mrouter is also filling the tables: colinux:~# cat /proc/net/ip_mr_cache Group Origin Iif Pkts Bytes Wrong Oifs 080706E1 0114A8C0 2 3 117 0 1:1 080706E1 010AA8C0 1 4 123 0 2:1 ^ | Output Interfaces But nothing is forwarded: colinux:~# cat /proc/net/ip_mr_vif Interface BytesIn PktsIn BytesOut PktsOut Flags Local Remote 1 tap0 123 4 0 0 0 FE0AA8C0 2 tap1 117 3 0 0 0 FE14A8C0 ^ | Nothing Out I surely missed something but don’t know what. I would be pleased if anybody could help... Thanks in advance, Yoann ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
[LARTC]Multicast routing between two subnets
Hello. I’m new to this list. I’m trying to set up multicast routing between two networks: Internet ^ | Windows box | | UserModeLinux A <-> Colinux Router <-> UserModeLinux B running mrouter I’m using a 2.6.8 kernel on Colinux with Multicast/Multicast routing support activated. The UMLs are supporting Multicast. I’m trying to make A and B communicate over a Multicast address with the emcast utility. Mrouter on Colinux is receiving the membership report from A end B. Mrouter is also filling the tables: colinux:~# cat /proc/net/ip_mr_cache Group Origin Iif Pkts Bytes Wrong Oifs 080706E1 0114A8C0 2 3 117 0 1:1 080706E1 010AA8C0 1 4 123 0 2:1 ^ | Output Interfaces But nothing is forwarded: colinux:~# cat /proc/net/ip_mr_vif Interface BytesIn PktsIn BytesOut PktsOut Flags Local Remote 1 tap0 123 4 0 0 0 FE0AA8C0 2 tap1 117 3 0 0 0 FE14A8C0 ^ | Nothing Out I surely missed something but don’t know what. I would be pleased if anybody could help... Thanks in advance, Yoann ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
[LARTC] Multicast routing with multiple routers problem
Hi, I have problem with multicast routing on my network. I tried mrouted and also pimd, but always same problem. When I set mrouted or pimd on one router, everything works fine, but when I start mrouted/pimd on another one, routing die. In moment when I start anorher mrouted/pimd /proc/net/ip_mr_cache is cleaned. My topology: gateway (no mrouted/pimd) | 192.168.0.0/24 | subnet+--- backbone switch-+ ||| ||| (192.168.0.1)(192.168.0.2) (192.168.0.3) router1streaming_machine router2 (192.168.1.1) (source of data) (192.168.2.1) | | 192.168.1.0/24| | 192.168.2.0/24 subnet subnetswitch switch | | | | | | | | | | clientsclients Backbone switch has igmp snooping, querying and mcast learning Any idea what could be wrong, or can anybody show mrouted.conf or pimd.conf for this ? Thanx for help. Roman ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
[LARTC] Multicast Routing
Hi, Anybody know anything about multicast routing? :) I see the HOWTO is rather lacking in this area... On my home network, I have multiple subnets attached to my router. I'd like multicast packets on either interface to be distributed on the other interface. (For context, this is to get Apple's Rendezvous protocol to work across multiple subnets). I thought this should be simple with multicast, but I can find zero documentation on it. The HOWTO cuts off just before the useful bit! Could anybody please shed any light? many thanks, -- Alan Ford * [EMAIL PROTECTED] ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
[LARTC] Multicast routing
Hello list, Not sure if I am asking the question in the correct list. I am a newbie trying to get multicast routing to work on my linux 2.4 kernel. I am using usc pimd code. I have pimd which sets up the route in the kernel [ /tmp]# ip mroute show (22.22.22.1, 224.0.1.20) Iif: eth2 Oifs: eth1 [ /tmp]# I can see data packets arriving on eth2 [/tmp]# tethereal -i eth2 Capturing on eth2 0.00 22.22.22.1 -> 224.0.1.20 UDP Source port: 32770 Destination port: 12345 1.00 22.22.22.1 -> 224.0.1.20 UDP Source port: 32770 Destination port: 12345 2.00 22.22.22.1 -> 224.0.1.20 UDP Source port: 32770 Destination port: 12345 However, packets are not getting forwarded on eth1 [ /tmp]# cat /proc/net/ip_mr_cache GroupOrigin Iif PktsBytesWrong Oifs 140100E0 01161616 2 82847880 1:1 [EMAIL PROTECTED] /tmp]# [ /tmp]# cat /proc/sys/net/ipv4/ip_forward 1 Any suggestions on debugging the problem is greatly appreciated Thanks Meenakshi ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
[LARTC] Multicast Routing
Anybody can answer my question regarding multicast routing. i have read Linux 2.4 Advanced Routing HOWTO and i have some question about multicast routing. I have two network to route between. Can you give me some tips to configure the routing table. I have two LAN connecting each other through Linux Box. Box A eth0 : internet Add eth1 : local subnet (192.168.0.0) Box B eth0 : 192.168.0.15 eth1 : 10.100.0.1 Client C (windows 98) connect to Box B is 10.100.0.10 How can my Client C can send multicast packet to LAN connected to BOX A and B in the same time (sending from client C 10.100.0.10)?I use IP Masquerade to make sure my "Client C" can connected directly to internet. same as i use it at BOX A and B. I can send multicast packet from Client C to Box B, and Box B to Box A. But can't send from Client C to Box A. Box A can send multicast packet to Box B but can't send to Client C. I think may be i have to configure the multicast routing at BOX B. But I have tried many ways but failed. Thank you. ps: sorry for the bad english language. ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
