Symptom/Cause | Solution |
---|---|
PIM sparse mode in not configured on the interfaces | Use these commands: show ip pim neighbor Check the pim neighbour as the downstream router. ip pim sparse-mode Use this command to configure sparse mode on all the concerned interfaces |
Multicast routing in not configured | Use this command: ip multicast-routing Configure multicast routing on the interface. |
Interface is not active | Use these commands: show ip interface brief If the address field is “unassigned”, configure IP address on the interface with a mask. Alternatively, configured ip address can also be checked using show running-config interface IFNAME. For ex: ip address 2.2.2.2/24 no shutdown Bring up the admin status of the interface if down. |
Symptom/Cause | Solution |
---|---|
Some other route exists. | Use this command: show ip rpf <source-address> Check whether RPF interface is as expected; If not some other route exists to the source which is causing the multicast packet to be dropped due to RPF check failure. |
Symptom/Cause | Solution |
---|---|
RP not configured on all the routers for static RP | Use this command: ip pim rp-address <RP-address> Configure rp on all the routers in the pim domain. |
VIF for RP is not created | Use these commands: show ip mvif Verify whether VIF is created for the RP. ip pim sparse-mode If RP is configured on the loopback interface of the router then pim sparse mode configuration must be present on the loopback interface. ip multicast-routing Multicast routing must be configured on each router. |
Symptom/Cause | Solution |
---|---|
Static group configuration without source | Use these commands: show ip igmp groups detail Check whether group recode is include and source list has one or more sources. no ip igmp static-group <group-addr> no ip igmp join-group <group-addr> Remove the static/join group without source, on the interface. |
IGMPv2 report present for the group | Use these commands: show ip igmp groups detail Group mode should not be exclude. Check whether group mode is exclude; remove the v2 group-record using command below. clear ip igmp groups <group-addr> Use this command to remove the igmp v2 group. |