Cisco Catalyst 3850 series User Manual

Table 24: Commands for Displaying Multicast Peers, Packet Rates and Loss Information, and Path Tracing
PurposeCommand
Queries a multicast router or multilayer device about
which neighboring multicast devices are peering with
it.
mrinfo { [hostname | address] | vrf }
Displays IP multicast packet rate and information loss.
mstat { [hostname | address] | vrf }
Traces the path from a source to a destination branch
for a multicast distribution tree for a given group.
mtrace { [hostname | address] | vrf }
Configuration Examples for IP Multicast Routing
Example: Configuring an IP Multicast Boundary
This example shows how to set up a boundary for all administratively-scoped addresses:
Device(config)# access-list 1 deny 239.0.0.0 0.255.255.255
Device(config)# access-list 1 permit 224.0.0.0 15.255.255.255
Device(config)# interface gigabitethernet1/0/1
Device(config-if)# ip multicast boundary 1
Related Topics
Defining the IP Multicast Boundary (CLI), on page 156
IP Multicast Boundary, on page 24
Multicast Group Transmission Scheme, on page 22
Example: Responding to mrinfo Requests
The software answers mrinfo requests sent by mrouted systems and Cisco routers and multilayer devices. The
software returns information about neighbors through DVMRP tunnels and all the routed interfaces. This
information includes the metric (always set to 1), the configured TTL threshold, the status of the interface,
and various flags. You can also use the mrinfo privileged EXEC command to query the router or device itself,
as in this example:
Device# mrinfo
171.69.214.27 (mm1-7kd.cisco.com) [version cisco 11.1] [flags: PMS]:
171.69.214.27 -> 171.69.214.26 (mm1-r7kb.cisco.com) [1/0/pim/querier]
171.69.214.27 -> 171.69.214.25 (mm1-45a.cisco.com) [1/0/pim/querier]
171.69.214.33 -> 171.69.214.34 (mm1-45c.cisco.com) [1/0/pim]
171.69.214.137 -> 0.0.0.0 [1/0/pim/querier/down/leaf]
171.69.214.203 -> 0.0.0.0 [1/0/pim/querier/down/leaf]
171.69.214.18 -> 171.69.214.20 (mm1-45e.cisco.com) [1/0/pim]
171.69.214.18 -> 171.69.214.19 (mm1-45c.cisco.com) [1/0/pim]
171.69.214.18 -> 171.69.214.17 (mm1-45a.cisco.com) [1/0/pim]
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
OL-32598-01 305
Configuring Basic IP Multicast Routing
Configuration Examples for IP Multicast Routing

Cisco Catalyst 3850 series Specifications

General

Brand	Cisco
Model	Catalyst 3850 series
Category	Switch
Language	English