1 # $QuaggaId: $Format:%an, %ai, %h$ $
5 - Check the source is issuing multicast packets with TTL high enough
6 to reach the recipients.
8 - Check the multicast packets are not being dropped due to
9 fragmentation problems.
11 - Three easy options to test IGMPv3 joins from the receiver host:
13 1) Configure pimd on the receiver host with "ip igmp join":
17 ip igmp join 239.1.1.1 1.1.1.1
19 2) Use test_igmpv3_join command-line utility (provided with qpimd):
21 test_igmpv3_join eth0 239.1.1.1 1.1.1.1
23 3) User the Stig Venaas' ssmping utility:
25 ssmping -I eth0 1.1.1.1
27 To see multicast responses with ssmping, you will need run on
28 the host 1.1.1.1 either:
29 a) Stig Venaas' ssmpingd command-line daemon
31 b) qpimd built-in ssmpingd service:
35 - Using nepim to generate multicast stream from 1.1.1.1 to 239.1.1.1:
39 a) The host unicast address 1.1.1.1 must be reachable from the
42 b) nepim tool requires the receiver must be started *before* the
45 First: Start a receiver for that stream by running:
47 nepim -q -6 -j 1.1.1.1+239.1.1.1@eth0
48 (Remember of enabling both "ip pim ssm" and "ip igmp" under eth0.)
50 Second: Start the sender at host 1.1.1.1.
52 The following command generates a 100-kbps multicast stream for
53 channel 1.1.1.1,239.1.1.1 with TTL 10 and 1000-byte payload per UDP
54 packet (to avoid fragmentation):
56 nepim -6 -M -b 1.1.1.1 -c 239.1.1.1 -T 10 -W 1000 -r 100k -a 1d
66 test pim receive hello eth0 192.168.0.2 600 10 111 1000 3000 0
67 test pim receive join eth0 600 192.168.0.1 192.168.0.2 239.1.1.1 1.1.1.1
72 INTEROPERABILITY WITH CISCO
74 ! Cisco IP Multicast command reference:
75 ! ftp://ftpeng.cisco.com/ipmulticast/Multicast-Commands
77 ip pim ssm default ! enable SSM mode for groups 232.0.0.0/8
79 ip pim state-refresh disable
82 interface FastEthernet0