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- # $QuaggaId: $Format:%an, %ai, %h$ $
- DEBUG HINTS
- - Check the source is issuing multicast packets with TTL high enough
- to reach the recipients.
- - Check the multicast packets are not being dropped due to
- fragmentation problems.
- - Three easy options to test IGMPv3 joins from the receiver host:
- 1) Configure pimd on the receiver host with "ip igmp join":
- interface eth0
- ip pim ssm
- ip igmp join 239.1.1.1 1.1.1.1
- 2) Use test_igmpv3_join command-line utility (provided with qpimd):
- test_igmpv3_join eth0 239.1.1.1 1.1.1.1
- 3) User the Stig Venaas' ssmping utility:
- ssmping -I eth0 1.1.1.1
- To see multicast responses with ssmping, you will need run on
- the host 1.1.1.1 either:
- a) Stig Venaas' ssmpingd command-line daemon
- OR
- b) qpimd built-in ssmpingd service:
- conf t
- ip ssmpingd 1.1.1.1
- - Using nepim to generate multicast stream from 1.1.1.1 to 239.1.1.1:
- Notices:
- a) The host unicast address 1.1.1.1 must be reachable from the
- receiver.
- b) nepim tool requires the receiver must be started *before* the
- sender.
- First: Start a receiver for that stream by running:
- nepim -q -6 -j 1.1.1.1+239.1.1.1@eth0
- (Remember of enabling both "ip pim ssm" and "ip igmp" under eth0.)
- Second: Start the sender at host 1.1.1.1.
- The following command generates a 100-kbps multicast stream for
- channel 1.1.1.1,239.1.1.1 with TTL 10 and 1000-byte payload per UDP
- packet (to avoid fragmentation):
- nepim -6 -M -b 1.1.1.1 -c 239.1.1.1 -T 10 -W 1000 -r 100k -a 1d
- SAMPLE DEBUG COMMANDS
- conf t
- int eth0
- ip pim ssm
- test pim receive hello eth0 192.168.0.2 600 10 111 1000 3000 0
- test pim receive join eth0 600 192.168.0.1 192.168.0.2 239.1.1.1 1.1.1.1
- show ip pim join
- INTEROPERABILITY WITH CISCO
- ! Cisco IP Multicast command reference:
- ! ftp://ftpeng.cisco.com/ipmulticast/Multicast-Commands
- !
- ip pim ssm default ! enable SSM mode for groups 232.0.0.0/8
- ip multicast-routing
- ip pim state-refresh disable
- no ip pim dm-fallback
- !
- interface FastEthernet0
- ip pim sparse-mode
- ip igmp version 3
- -x-
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