Cisco Catalyst 3850 series User Manual

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
PurposeCommand or Action
Enables privileged EXEC mode. Enter your password if prompted.enable
Step 1
Example:
Device> enable
Confirms that the F flag has been set for mroutes on the first hop
router.
show ip mroute [group-address]
Example:
Device# show ip mroute 239.1.2.3
(*, 239.1.2.3), 00:18:10/stopped, RP
Step 2
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
Displays information about active multicast sources sending to
groups. The output of this command provides information about
the multicast packet rate for active sources.
show ip mroute active [kb/s]
Example:
Device# show ip mroute active
Active IP Multicast Sources - sending >= 4
Step 3
By default, the output of the show ip mroute command
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.
Note
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 OL-32598-01
Configuring PIM
Verifying IP Multicast Operation in a PIM-SM or a PIM-SSM Network

Cisco Catalyst 3850 series Specifications

General

Brand	Cisco
Model	Catalyst 3850 series
Category	Switch
Language	English