ES Multicast Not Working, Multicasting enabled and working otherwise


(Ryan) #1

Hello,

Are there any particular steps to debugging zen discovery using multicasting?

I'm able to send multicast traffic between two nodes following these steps:

Here's the output to confirm multicasting is enabled at the router level and functional on the network:

iperf -s -u -B 224.0.55.55 -i 1

Server listening on UDP port 5001
Binding to local address 224.0.55.55
Joining multicast group 224.0.55.55
Receiving 1470 byte datagrams
UDP buffer size: 8.00 MByte (default)

[ 3] local 224.0.55.55 port 5001 connected with 209.41.67.68 port 56666
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0- 1.0 sec 128 KBytes 1.05 Mbits/sec 0.010 ms 0/ 89 (0%)
[ 3] 1.0- 2.0 sec 128 KBytes 1.05 Mbits/sec 0.018 ms 0/ 89 (0%)
[ 3] 2.0- 3.0 sec 128 KBytes 1.05 Mbits/sec 0.024 ms 0/ 89 (0%)
[ 3] 0.0- 3.0 sec 386 KBytes 1.05 Mbits/sec 0.023 ms 0/ 269 (0%)

eth0 appears to bind to the 224.2.2.4 IP:
netstat -g
IPv6/IPv4 Group Memberships
Interface RefCnt Group


lo 1 all-systems.mcast.net
eth0 1 224.2.2.4
eth0 1 all-systems.mcast.net
lo 1 ip6-allnodes
lo 1 ff01::1
eth0 1 ff02::1:ff84:7902
eth0 1 ip6-allnodes
eth0 1 ff01::1
eth1 1 ip6-allnodes
eth1 1 ff01::1

Any suggestions on how to debug why nodes are unable to discover eachother using multicast is greatly appreciated.

Thanks!
Ryan


(Mark Walkom) #2

What do the logs say?


(system) #3