Example for Configuring MLAG with IGMP Snooping
- Tracy Yang
Networking Requirements
Figure 1 User Configuration Topology of MLAG with IGMP Snooping
As shown in Figure 1, a Host connects to a multicast source through the MLAG topology and a Layer 3 Router to receive multicast data from the Source device. Switch3 and Switch4 have dual access to the network through the MLAG peer devices Switch1 and Switch2.
Perform the following procedures on Switch1, Switch2, Switch3 and Switch4 to implement MLAG with IGMP snooping:
- Deploy basic MLAG configurations on Switch1 and Switch2 to form an MLAG topology.
- Enable global and VLAN-based IGMP snooping function on all the switches.
Configuration Notes:
- IGMP snooping configuration should be identical on both MLAG peer devices
- Only the dynamic Layer 2 multicast forwarding entries are synchronized between the MLAG peers, static entries are not synchronized.
- Generally, it is not necessary to configure mrouter port on the peer link.
Procedure
Switch1
Step1 Configure the VLANs.
admin@Switch1# set vlans vlan-id 10
admin@Switch1# set vlans vlan-id 4088 l3-interface vlan4088
admin@Switch1# set interface aggregate-ethernet ae48 family ethernet-switching native-vlan-id 4088
admin@Switch1# set interface aggregate-ethernet ae48 family ethernet-switching port-mode trunk
admin@Switch1# set interface aggregate-ethernet ae48 family ethernet-switching vlan members 10
admin@Switch1# set interface aggregate-ethernet ae71 family ethernet-switching port-mode trunk
admin@Switch1# set interface aggregate-ethernet ae71 family ethernet-switching vlan members 10
admin@Switch1# set interface aggregate-ethernet ae72 family ethernet-switching port-mode trunk
admin@Switch1# set interface aggregate-ethernet ae72 family ethernet-switching vlan members 10
Step2 Configure aggregation interfaces with LACP mode.
admin@Switch1# set interface aggregate-ethernet ae71 aggregated-ether-options lacp enable true
admin@Switch1# set interface aggregate-ethernet ae72 aggregated-ether-options lacp enable true
Step3 Add member interfaces to a LAG.
admin@Switch1# set interface gigabit-ethernet te-1/1/1 ether-options 802.3ad ae48
admin@Switch1# set interface gigabit-ethernet te-1/1/2 ether-options 802.3ad ae48
admin@Switch1# set interface gigabit-ethernet te-1/1/41 ether-options 802.3ad ae71
admin@Switch1# set interface gigabit-ethernet te-1/1/42 ether-options 802.3ad ae72
Step4 Configure an MLAG domain ID.
admin@Switch1# set protocols mlag domain 10
NOTE: Currently, only one MLAG domain is allowed to be configured on one MLAG device.
Step5 Specify Switch1 as MLAG Node 0.
admin@Switch1# set protocols mlag domain 10 node 0
Step6 Configure the peer IP address and peer link port.
admin@Switch1# set protocols mlag domain 10 peer-ip 1.1.1.201 peer-link ae48
NOTE: Peer-link port should be configured as a LAG port.
Step7 Configure the L3 interface IP address for peer link port on local MLAG peer device.
admin@Switch1# set l3-interface vlan-interface vlan4088 address 1.1.1.166 prefix-length 24
Step8 Configure link ID for the MLAG member port.
admin@Switch1# set protocols mlag domain 10 interface ae71 link 11
admin@Switch1# set protocols mlag domain 10 interface ae72 link 12
NOTE: The paired MLAG member ports must be bound to the same MLAG link ID.
Step9 Configure MLAG peer VLAN.
admin@Switch1# set protocols mlag domain 10 peer-ip 1.1.1.201 peer-vlan 4088
Step10 Enable IGMP snooping function.
admin@Switch1# set protocols igmp-snooping enable true
admin@Switch1# set protocols igmp-snooping vlan-id 10 enable true
Step11 Commit the configuration.
admin@Switch1# commit
Switch2
Step1 Configure the VLANs.
admin@Switch2# set vlans vlan-id 10
admin@Switch2# set vlans vlan-id 4088 l3-interface vlan4088
admin@Switch2# set interface aggregate-ethernet ae48 family ethernet-switching native-vlan-id 4088
admin@Switch2# set interface aggregate-ethernet ae48 family ethernet-switching port-mode trunk
admin@Switch2# set interface aggregate-ethernet ae48 family ethernet-switching vlan members 10
admin@Switch2# set interface aggregate-ethernet ae71 family ethernet-switching port-mode trunk
admin@Switch2# set interface aggregate-ethernet ae71 family ethernet-switching vlan members 10
admin@Switch2# set interface aggregate-ethernet ae72 family ethernet-switching port-mode trunk
admin@Switch2# set interface aggregate-ethernet ae72 family ethernet-switching vlan members 10
Step2 Configure aggregation interfaces with LACP mode.
admin@Switch2# set interface aggregate-ethernet ae71 aggregated-ether-options lacp enable true
admin@Switch2# set interface aggregate-ethernet ae72 aggregated-ether-options lacp enable true
Step3 Add member interfaces to a LAG.
admin@Switch2# set interface gigabit-ethernet te-1/1/1 ether-options 802.3ad ae48
admin@Switch2# set interface gigabit-ethernet te-1/1/2 ether-options 802.3ad ae48
admin@Switch2# set interface gigabit-ethernet te-1/1/41 ether-options 802.3ad ae71
admin@Switch2# set interface gigabit-ethernet te-1/1/42 ether-options 802.3ad ae72
Step4 Configure an MLAG domain ID.
admin@Switch2# set protocols mlag domain 10
NOTE: Currently, only one MLAG domain is allowed to be configured on one MLAG device.
Step5 Specify Switch2 as MLAG Node 1.
admin@Switch2# set protocols mlag domain 10 node 1
Step6 Configure the peer IP address and peer link port.
admin@Switch2# set protocols mlag domain 10 peer-ip 1.1.1.166 peer-link ae48
NOTE: Peer-link port should be configured as a LAG port.
Step7 Configure the L3 VLAN interface IP address for peer link port on local MLAG peer device.
admin@Switch2# set l3-interface vlan-interface vlan4088 address 1.1.1.201 prefix-length 24
Step8 Configure link ID for the MLAG member port.
admin@Switch2# set protocols mlag domain 10 interface ae71 link 11
admin@Switch2# set protocols mlag domain 10 interface ae72 link 12
NOTE: The paired MLAG member ports must be bound to the same MLAG link ID.
Step9 Configure MLAG peer VLAN.
admin@Switch2# set protocols mlag domain 10 peer-ip 1.1.1.166 peer-vlan 4088
Step10 Enable IGMP snooping function.
admin@Switch2# set protocols igmp-snooping enable true
admin@Switch2# set protocols igmp-snooping vlan-id 10 enable true
Step11 Commit the configuration.
admin@Switch2# commit
Switch3
Step1 Configure the VLANs.
admin@Switch3# set vlans vlan-id 10
admin@Switch3# set interface aggregate-ethernet ae1 family ethernet-switching port-mode trunk
admin@Switch3# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 10
admin@Switch3# set interface gigabit-ethernet ge-1/1/3 family ethernet-switching native-vlan-id 10
admin@Switch3# set interface gigabit-ethernet ge-1/1/3 description "to-host"
Step2 Configure aggregation interfaces with LACP mode.
admin@Switch3# set interface gigabit-ethernet ge-1/1/1 ether-options 802.3ad ae1
admin@Switch3# set interface gigabit-ethernet ge-1/1/2 ether-options 802.3ad ae1
admin@Switch3# set interface aggregate-ethernet ae1 aggregated-ether-options lacp enable true
Step3 Enable IGMP snooping function.
admin@Switch3# set protocols igmp-snooping enable true
admin@Switch3# set protocols igmp-snooping vlan-id 10 enable true
Step4 Commit the configuration.
admin@Switch3# commit
Switch4
Step1 Configure the VLANs.
admin@Switch4# set vlans vlan-id 10
admin@Switch4# set interface aggregate-ethernet ae2 family ethernet-switching port-mode trunk
admin@Switch4# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 10
admin@Switch4# set interface gigabit-ethernet ge-1/1/3 family ethernet-switching native-vlan-id 10
admin@Switch4# set interface gigabit-ethernet ge-1/1/3 description "to-server"
Step2 Configure aggregation interfaces with LACP mode.
admin@Switch4# set interface gigabit-ethernet ge-1/1/1 ether-options 802.3ad ae2
admin@Switch4# set interface gigabit-ethernet ge-1/1/2 ether-options 802.3ad ae2
admin@Switch4# set interface aggregate-ethernet ae2 aggregated-ether-options lacp enable true
Step3 Enable IGMP snooping function.
admin@Switch4# set protocols igmp-snooping enable true
admin@Switch4# set protocols igmp-snooping vlan-id 10 enable true
Step4 Commit the configuration.
admin@Switch4# commit
Verify the Configuration
- You can use the run show mlag link command to display MLAG link information.
admin@Switch1# run show mlag link summary # of Links: 2 Link Local LAG Link Status Local Status Peer Status Config Matched Flood ---- --------- ----------- ------------ ----------- -------------- ----- 11 ae71 FULL UP UP Yes No 12 ae72 FULL UP UP Yes No admin@Switch2# run show mlag link summary # of Links: 2 ------------------------------------------------------------------------------ Link Local LAG Link Status Local Status Peer Status Config Matched Flood ---- --------- ----------- ------------ ----------- -------------- ----- 11 ae71 FULL UP UP Yes No 12 ae72 FULL UP UP Yes No
- You can use the run show igmp-snooping groups command to show the multicast group information.
admin@Switch1# run show igmp-snooping groups Total group count: 1 Vlan Group Port List Type -------- ------------------ ----------------- ---------------------- 10 234.0.0.8 ae71 Dynamic ae72 Mrouter admin@Switch2# run show igmp-snooping groups Total group count: 1 Vlan Group Port List Type -------- ------------------ ----------------- ---------------------- 10 234.0.0.8 ae71 Dynamic ae72 Mrouter admin@Switch3# run show igmp-snooping groups Total group count: 1 Vlan Group Port List Type -------- ------------------ ----------------- ---------------------- 10 234.0.0.8 ge-1/1/3 Dynamic ae1 Mrouter admin@Switch4# run show igmp-snooping groups Total group count: 1 Vlan Group Port List Type -------- ------------------ ----------------- ---------------------- 10 234.0.0.8 ae2 Dynamic ge-1/1/3 Mrouter
- You can use the run show igmp-snooping mrouter command to show the information about IGMP snooping router port.
admin@Switch1# run show igmp-snooping mrouter Vlan Ports Type -------- ------------- --------- 10 ae2 Dynamic admin@Switch2# run show igmp-snooping mrouter Vlan Ports Type -------- ------------- --------- 10 ae2 Dynamic admin@Switch3# run show igmp-snooping mrouter Vlan Ports Type -------- ------------- --------- 10 ae1 Dynamic admin@Switch4# run show igmp-snooping mrouter Vlan Ports Type -------- ------------- --------- 10 ge-1/1/3 Dynamic
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