Misc Mcast-01

ip pim rp-announce-filter
Only routers configured as mapping agents subscribe to candidate RP announcement messages. Therefore, the ip pim rp-announce-filter global configuration command is effective only when configured on a mapping agent router. This command has no effect when configured on any other router.

R5(config)#do sh run | i rp-
ip pim send-rp-discovery Loopback0 scope 16
ip pim rp-announce-filter rp-list RPS group-list DENSE
R5(config)#

The following example configures the router to accept RP announcements from RPs in access list 1 for group ranges described in access list 2; note the ACEs in access-list 2.

ip pim rp-announce-filter rp-list 1 group-list 2
access-list 1 permit 10.0.0.1
access-list 1 permit 10.0.0.2
access-list 2 permit 224.0.0.0 192.168.255.255

If rp-list is missing, filtering is then based on group-list and vice versa. 

 
mtrace 
This command is great to give you an overview of your topology with regards to any S and G you're tracking.  Note that 155.1.67.7 which was a test vlan on SW1 showing up!

R6#mstat 150.1.6.6 150.1.10.10 224.0.1.40
Type escape sequence to abort.
Mtrace from 150.1.6.6 to 150.1.10.10 via group 224.0.1.40
From source (R6) to destination (?)
Waiting to accumulate statistics....* .* .
Results after 13 seconds:

  Source        Response Dest   Packet Statistics For     Only For Traffic
150.1.6.6       150.1.6.6       All Multicast Traffic     From 150.1.6.6
     |       __/  rtt 48   ms   Lost/Sent = Pct  Rate     To 224.0.1.40
     v      /     hop -1   s    ---------------------     --------------------
150.1.6.6      
155.1.67.6      ?
     |     ^      ttl   0  
     v     |      hop 719  ms    -4/0 = --%      0 pps    0/0 = --%  0 pps
155.1.67.7     
155.1.37.7      ?
     |     ^      ttl   1  
     v     |      hop -14  s     0/0 = --%      0 pps    0/0 = --%  0 pps
155.1.37.3     
155.1.0.3       ?
     |     ^      ttl   2  
     v     |      hop 12   s     0/0 = --%      0 pps    0/0 = --%  0 pps
155.1.0.5      
155.1.58.5      ?
     |     ^      ttl   3  
     v     |      hop 2441 ms    -3/0 = --%      0 pps    0/0 = --%  0 pps
155.1.58.8     
155.1.108.8     ?
     |     ^      ttl   4  
     v     |      hop -1   s     -3/0 = --%      0 pps    0/0 = --%  0 pps
155.1.108.10    ?
     |      \__   ttl   5  
     v         \  hop 1211 ms        0         0 pps           0    0 pps
150.1.10.10     150.1.6.6      
  Receiver      Query Source

R6#

mrinfo
This command shows multicast neighbor router information, router capabilities and code version, multicast interface information, TTL thresholds, metrics, protocol, and status. It is useful when you need to verify multicast neighbors, confirm that bi−directional neighbor adjacency exists, and verify that tunnels are up in both directions. 
R1#mrinfo     
155.1.146.1 [version  12.4] [flags: PMA]:
  155.1.146.1 -> 155.1.146.4 [1/0/pim/querier]
  155.1.146.1 -> 155.1.146.6 [1/0/pim/querier]
  155.1.0.1 -> 155.1.0.5 [1/0/pim]
  150.1.1.1 -> 150.1.9.9 [1/0/tunnel/pim]
  150.1.1.1 -> 0.0.0.0 [1/0/pim/querier/leaf]
  150.1.1.1 -> 150.1.3.3 [1/0/tunnel/pim]

R1#
R1#sh ip pim ne  
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
      S - State Refresh Capable
Neighbor          Interface                Uptime/Expires    Ver   DR
Address                                                            Prio/Mode
155.1.146.4       GigabitEthernet0/0       1w1d/00:01:24     v2    1 / S P
155.1.146.6       GigabitEthernet0/0       1w1d/00:01:38     v2    1 / S P
155.1.0.5         Serial0/0/0.1            1w1d/00:01:34     v2    1 / S P
150.1.9.9         Tunnel0                  1d23h/00:01:24    v2    1 / S P
150.1.3.3         Tunnel1                  1d23h/00:01:22    v2    1 / S P
R1#