Alcatel-Lucent OmniSwitch 10K - 15 Troubleshooting IP Multicast Routing (IPMR); Introduction; Minimum Working Configuration

OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
Alcatel-Lucent Page 113 of 148
15. Troubleshooting IP Multicast Routing (IPMR)
Checklist
 IP interfaces for all concerned VLANs must be added into multicast routing context
 The IP interface used as Rendezvous Point must be added as PIM interface
 In case of PIM Sparse Mode a static or candidate Rendezvous Point must be configured
 Multicast sources must use IP addresses matching the subnet of the VLAN
 TTL in packets generated by multicast sources must be sufficient to reach all destinations
Summary of the commands in this chapter is listed here:
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show configuration snapshot ip ipms ipmr
show ip multicast source | head
show ip multicast group | head
show ip multicast forward | head
show ip pim interface
show ip pim sgroute | head -n 14
show ip pim groute | head
debug ip multicast flow
show c xe11
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15.1. Introduction
IPMS and Multicast Routing Limitations
IP Multicast routing and switch control plane traffic are done in the software path, such as IGMP, MLD, PIM
Join/Prune, Hello – DVMRP, PIM-DM, PIM-SSM, etc. IP multicast will be forwarded in hardware mode in
switched or routed networks, except register packets and DVMRP tunneling packets.
15.2. Minimum working configuration
PIM Sparse Mode
-> show configuration snapshot ip ipms ipmr
! IP:
ip interface "Loopback0" address 192.168.254.1
ip interface "vlan10" address 192.168.10.1 mask 255.255.255.0 vlan 10 ifindex 1
ip interface "vlan20" address 192.168.20.1 mask 255.255.255.0 vlan 20 ifindex 2
! IPMS:
ip multicast admin-state enable
! IP Multicast:
ip load pim
ip pim interface "vlan10"
ip pim interface "vlan20"
ip pim interface "Loopback0"
ip pim static-rp 224.0.0.0/4 192.168.254.1
ip pim sparse admin-state enable
ip pim dense admin-state disable
ipv6 pim sparse admin-state disable
ipv6 pim dense admin-state disable
! DVMRP:
! IPMR: