Communication On Ipv6 Pim-Ssm Network Is Disabled - NEC IP8800/S2400 Series Troubleshooting Manual

3.11.3

Communication on IPv6 PIM-SSM Network Is Disabled

If multicast relay on the IPv6 PIN-SSM network configuration is disabled, isolate the cause according to the failure
analysis method below.
The figure below illustrates a network example of IPv6 PIM-SSM.
Figure 3-17: Example of IPv6 PIM-SSM Network
Multicast
sender
first-hop-router
Multicast
data
Note
• first-hop-router: This router is directly connected to the multicast sender.
• last-hop-router: This router is directly connected to the multicast receiver.
(1) Common check items
The table below shows the common check items for all system in the IPv6 PIM-SSM network configuration.
Table 3-44: Common Check Items
No. Troubleshooting Steps and Command
1 Confirm that the use of multicast function is designated (ipv6
multicast routing) in the configuration.
show running-config
2 Confirm that the address of the loopback interface is set in the
configuration.
show running-config
3 Confirm that PIM is running on one or more interfaces.
show ipv6 pim interface
4 Confirm that MLD snooping is set to the interface with PIM
enabled.
show mld-snooping
5 Confirm in the configuration that suppression of protocol
packet and multicast packet relay through filtering, etc. is not
provided on the interface that allows PIM and MLD to run.
show running-config
6 Check the PIM neighboring information.
show ipv6 pim neighbor
3.
Troubleshooting Functional Failures in Operation
Multicast
receiver
Participation in
the MLD group
last-hop-router
Participation in
the MLD group
Multicast
receiver
Action
If the use of multicast function is not designated, correct the
configuration.
If the address of the loopback interface is not set, correct the
configuration.
If PIM is not running, check the configuration. Set PIM to run
on one or more interfaces.
When MLD snooping is set, confirm the following:
• Confirm that multicast router port for MLD snooping is set
to the ports to which neighboring routers connect.
• See "3.5.5 Multicast Relay by MLD snooping Is
If suppression of protocol packet and multicast packet relay is
provided, correct the configuration.
If the neighboring router is not displayed, check the
following:
• Confirm that PIM is running on the interface connected to
the neighboring router using the show ipv6 pim
command with "interface" parameter specified.
• Verify the settings of the neighboring router.
Disabled."
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