Brand: HP
Category: Networking
Document Type: Manual
Language: EN
Manual for MSR Router Series
Uploaded: Nov. 21, 2025, 6:37 p.m.
Warranty Information
Refer to the HP documentation for specific warranty information.
This manual provides a comprehensive guide to configuring IP multicast on HP MSR Router Series devices. It covers essential concepts like multicast overview, models, architecture, and protocols. Detailed sections explain the configuration of IGMP snooping, static multicast routes, multicast routing and forwarding, IGMP, PIM (PIM-DM, PIM-SM, BIDIR-PIM, PIM-SSM), MSDP, and multicast VPNs. It also includes troubleshooting steps for common issues encountered with these features.
Troubleshooting and error codes
| Symptom | Analysis | Solution |
|---|---|---|
| A multicast distribution tree cannot be correctly built | An IPv6 multicast distribution tree cannot be correctly built because no IPv6 multicast forwarding entries are established on the routers (including routers directly connected with multicast sources or receivers) in an IPv6 PIM network. | 1. Use display ipv6 routing-table to verify that an IPv6 unicast route to the IPv6 multicast source or the RP is available. 2. Use display ipv6 pim interface to verify IPv6 PIM information on each interface, especially on the RPF interface. If IPv6 PIM is not enabled on the interfaces, use ipv6 pim dm or ipv6 pim sm to enable IPv6 PIM-DM or IPv6 PIM-SM for the interfaces. 3. Use display ipv6 pim neighbor to verify that the RPF neighbor is an IPv6 PIM neighbor. 4. Verify that IPv6 PIM and MLD are enabled on the interfaces that directly connect to the IPv6 multicast sources or the receivers. 5. Use display ipv6 pim interface verbose to verify that the RPF interface on a router and the connected interface of the router's RPF neighbor run the same IPv6 PIM mode. 6. Use display current-configuration to verify that the same IPv6 PIM mode is enabled on all routers on the network. For IPv6 PIM-SM, verify that the BSR and C-RPs are correctly configured. 7. If the problem persists, contact HP Support. |
| IPv6 multicast data is abnormally terminated on an intermediate router | An intermediate router can receive IPv6 multicast data successfully, but the data cannot reach the last-hop router. An interface on the intermediate router receives IPv6 multicast data but does not create an (S, G) entry in the IPv6 PIM routing table. | 1. Use display current-configuration to verify the IPv6 multicast forwarding boundary settings. Use ipv6 multicast boundary to change the multicast forwarding boundary settings to make the IPv6 multicast packet able to cross the boundary. 2. Use display current-configuration to verify the IPv6 multicast data filter. Change the ACL rule defined in the source-policy command so that the source/group address of the IPv6 multicast data can pass ACL filtering. 3. If the problem persists, contact HP Support. |
| An RP cannot join an SPT in IPv6 PIM-SM | An RPT cannot be correctly built, or an RP cannot join the SPT toward the IPv6 multicast source. | 1. Use display ipv6 routing-table to verify that an IPv6 unicast route to the RP is available on each router. 2. Use display ipv6 pim rp-info to verify that the dynamic RP information is consistent on all routers. 3. Use display ipv6 pim rp-info to verify that the same static RPs are configured on all routers on the network. 4. If the problem persists, contact HP Support. |
| An RPT cannot be built or IPv6 multicast source registration fails in IPv6 PIM-SM | The C-RPs cannot unicast advertisement messages to the BSR. The BSR does not advertise BSMs containing C-RP information and has no IPv6 unicast route to any C-RP. An RPT cannot be correctly established, or the source-side DR cannot register the IPv6 multicast source with the RP. | 1. Use display ipv6 routing-table to verify that the IPv6 unicast routes to the C-RPs and the BSR are available on each router and that a route is available between each C-RP and the BSR. Make sure each C-RP has an IPv6 unicast route to the BSR, the BSR has an IPv6 unicast route to each C-RP, and each router on the network has IPv6 unicast routes to the C-RPs. 2. Use display ipv6 pim bsr-info to verify that the BSR information exists on each router. Then, use display ipv6 pim rp-info to verify that the RP information is correct on each router. 3. Use display ipv6 pim neighbor to verify that IPv6 PIM neighboring relationship has been correctly established among the routers. 4. If the problem persists, contact HP Support. |