Dell PowerConnect 6248 Configuration Guide - Page 159

Multicast Route Table Summary, IGMP Router-Alert check

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console#show ip igmp IGMP Admin Mode Enabled IGMP Router-Alert check Disabled IGMP INTERFACE STATUS Interface Interface-Mode Operational-Status vlan 100 Enabled Operational vlan 200 Enabled Operational The host connected to interface 1/g5 sends an IGMP join message for multicast group 225.1.1.1 in VLAN 100. Then, the host connected to 1/g15 sends multicast data for group 225.1.1.1 in VLAN 200. Interface 1/g5 sends and receives the multicast data from the host on interface 1/g15. The multicast traffic must be routed because the hosts on 1/g5 and 1/g15 are in different subnets. Due to IGMP snooping, interface 1/g10 does not send or receive any multicast data even though it is in the same broadcast domain as interface 1/g5. console#show bridge multicast address-table Vlan MAC Address Type Ports 100 0100.5E01.0101 Dynamic 1/g5 Vlan ---100 Forbidden ports for multicast addresses: MAC Address Ports 0100.5E01.0101 console#show ip mcast mroute summary Multicast Route Table Summary Incoming Outgoing Source IP Group IP Protocol Interface Interface List 20.20.20.20 225.1.1.1 PIMDM vlan 200 vlan 100 Multicast 159

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Multicast
159
console#s
how ip igmp
IGMP Admin Mode
................................
Enabled
IGMP Router-Alert check
........................
Disabled
IGMP INTERFACE STATUS
Interface
Interface-Mode
Operational-Status
---------
--------------
----------------
vlan 100
Enabled
Operational
vlan 200
Enabled
Operational
The host connected to interface 1/g5 sends an IGMP join message for multicast group 225.1.1.1 in
VLAN 100. Then, the host connected to 1/g15 sends multicast data for group 225.1.1.1 in VLAN 200.
Interface 1/g5 sends and receives the multicast data from the host on interface 1/g15. The multicast
traffic must be routed because the hosts on 1/g5 and 1/g15 are in different subnets. Due to IGMP
snooping, interface 1/g10 does not send or receive any multicast data even though it is in the same
broadcast domain as interface 1/g5.
console#
show bridge multicast address-table
Vlan
MAC Address
Type
Ports
----
-----------------------
------- ------------------
100
0100.5E01.0101
Dynamic
1/g5
Forbidden ports for multicast addresses:
Vlan
MAC Address
Ports
----
----------------------- ----------------------------
100
0100.5E01.0101
console#show
ip mcast mroute summary
Multicast Route Table Summary
Incoming
Outgoing
Source IP
Group IP
Protocol
Interface Interface List
--------------- --------------- --------- --------- ---------------
20.20.20.20
225.1.1.1
PIMDM
vlan 200
vlan 100