Verifying Ip Multicast On The First Hop Router - Cisco Catalyst 3850 series Configuration Manual

Verifying IP Multicast Operation in a PIM-SM or a PIM-SSM Network

Verifying IP Multicast on the First Hop Router

Enter these commands on the first hop router to verify IP multicast operations on the first hop router:
SUMMARY STEPS
1. enable
2. show ip mroute [group-address]
3. show ip mroute active [kb/s]
DETAILED STEPS
Command or Action
Step 1 enable
Example:
Device> enable
Step 2 show ip mroute [group-address]
Example:
Device# show ip mroute 239.1.2.3
(*, 239.1.2.3), 00:18:10/stopped, RP
172.16.0.1, flags: SPF
Incoming interface: Serial1/0, RPF nbr
172.31.200.2
Outgoing interface list: Null
(10.0.0.1, 239.1.2.3), 00:18:10/00:03:22,
flags: FT
Incoming interface: GigabitEthernet0/0/0,
RPF nbr 0.0.0.0
Outgoing interface list:
Serial1/0, Forward/Sparse-Dense,
00:18:10/00:03:19
Step 3 show ip mroute active [kb/s]
Example:
Device# show ip mroute active
Active IP Multicast Sources - sending >= 4
kbps
Group: 239.1.2.3, (?)
Source: 10.0.0.1 (?)
Rate: 20 pps/4 kbps(1sec), 4 kbps(last
30 secs), 4 kbps(life avg)
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
172
Purpose
Enables privileged EXEC mode. Enter your password if prompted.
Confirms that the F flag has been set for mroutes on the first hop
router.
Displays information about active multicast sources sending to
groups. The output of this command provides information about
the multicast packet rate for active sources.
By default, the output of the show ip mroute command
Note
with the active keyword displays information about active
sources sending traffic to groups at a rate greater than or
equal to 4 kb/s. To display information about active
sources sending low-rate traffic to groups (that is, traffic
less than 4 kb/s), specify a value of 1 for the kb/s argument.
Specifying a value of 1 for this argument displays
information about active sources sending traffic to groups
at a rate equal to or greater than 1 kb/s, which effectively
displays information about all possible active source
traffic.
Configuring PIM
OL-32598-01