1TROUBLESHOOTING
2
3# Check kernel mcast cache
4# On Linux:
5ip mroute show
6
7! qpimd on last-hop router
8! . attached to mcast receiver
9! . runnning both PIM-SSM and IGMPv3
10!
11show ip mroute         (kernel mcast programming is correct?)
12show ip pim upstream   (we joined our upstream?)
13show ip pim neighbor   (upstream is neighbor?)
14show ip pim interface  (pim enabled on interfaces?)
15show ip multicast      (multicast enabled at all?)
16show ip rib SRC        (unicast route towards source?)
17
18show ip igmp sources   (receiver joined on interface?)
19show ip igmp interface (igmp enabled on receiver interface?)
20
21! qpimd on intermmediate routers
22! . may be attached to mcast source
23! . runnning only PIM-SSM, not IGMPv3
24!
25show ip mroute         (kernel mcast programming is correct?)
26show ip pim upstream   (we joined our upstream?)
27show ip pim join       (downstream joined us?)
28show ip pim neighbor   (downstream is neighbor?)
29show ip pim interface  (pim enabled on interfaces?)
30show ip multicast      (multicast enabled at all?)
31show ip rib SRC        (unicast route towards source?)
32
33--EOF--
34