Configure MLAG Basic Functions
Network Requirements
- All devices are in one L2 network.
Network Topology
![Configure MLAG basic functions](/storage/images/Document/Maipu/ethernet-switching/topology-for-config-mlag-basic-function.jpg)
Figure 13-1 Configure MLAG basic functions
Configuration Steps
Step1: Add the interface to the aggregation group and add to vlan. (omitted)
Step2: Configure the MLAG domain.
#Configure Device1, and configure the MLAG domain instance.
Device1#configure terminal
Device1(config)#mlag domain 1
Device1(config-mlag-domain)#node id 1
Device1(config-mlag-domain)#local-interface vlan 100
Device1(config-mlag-domain)#peer-address 20.0.0.10
Device1(config-mlag-domain)#keepalive ip destination 30.0.0.10 source 30.0.0.20
Device1(config-mlag-domain)#exit
|
##Configure Device2, and configure the MLAG domain instance.
Device2#configure terminal
Device2(config)#mlag domain 1
Device2(config-mlag-domain)#node id 2
Device2(config-mlag-domain)#local-interface vlan 100
Device2(config-mlag-domain)#peer-address 20.0.0.20
Device2(config-mlag-domain)#keepalive ip destination 30.0.0.20 source 30.0.0.10
Device2(config-mlag-domain)#exit
|
Description:
The domain IDs of two MLAG nodes should be the same.
The node IDs of two MLAG nodes cannot be the same.
Step3: Configure local-interface vlan and keepalive ip interface.
#Configure Device1, and configure local-interface vlan and keepalive ip interface.
Device1(config)#interface vlan 100
Device1(config-if-vlan100)#ip address 20.0.0.10 24
Device1(config-if-vlan100)#exit
Device1(config)#interface vlan 4094
Device1(config-if-vlan4094)#ip address 30.0.0.10 24
Device1(config-if-vlan4094)#exit
Device1(config)#
|
#Configure Device2, and configure local-interface vlan and keepalive ip interface.
Device2(config)#interface vlan 100
Device2(config-if-vlan100)#ip address 20.0.0.20 24
Device2(config-if-vlan100)#exit
Device2(config)#interface vlan 4094
Device2(config-if-vlan4094)#ip address 30.0.0.20 24
Device2(config-if-vlan4094)#exit
Device2(config)#
|
Step4: Configure mlag group and peer-link group.
#Configure Device1, and configure mlag group and peer-link group.
Device1(config)#interface link-aggregation 1
Device1(config-link-aggregation1)#mlag group 1
Device1(config-link-aggregation1)#exit
Device1(config)#
Device1(config)# interface link-aggregation 10
Device1(config-link-aggregation10)#mlag peer-link
Device1(config-link-aggregation1)#exit
Device1(config)#
Device1(config)# interface link-aggregation 20
Device1(config-link-aggregation20)#mlag group 20
Device1(config-link-aggregation20)#exit
Device1(config)#
|
#Configure Device2, and configure mlag group and peer-link group.
Device2(config)# interface link-aggregation 1
Device2(config-link-aggregation1)#mlag group 1
Device2(config-link-aggregation1)#exit
Device2(config)#
Device2(config)# interface link-aggregation 10
Device2(config-link-aggregation10)#mlag peer-link
Device2(config-link-aggregation1)#exit
Device2(config)#
Device2(config)# interface link-aggregation 20
Device2(config-link-aggregation20)#mlag group 20
Device2(config-link-aggregation20)#exit
Device2(config)#
|
#Query the MLAG information on Device1.
Device1#sho mlag brief
MLAG domain id : 1
Role FSM status : SLAVE
Peering FSM status : ESTABLISHED
Keepalive FSM statu s : ALIVE
PTS Service : ON
Up-delay : 90 sec
Local-interface vlan : 100
Graceful-restart : Disabled
Number of mlags configured : 2
----------------------------------------------------------------
Peer-Link Link-status Data-status Active-vlans
------------------- ---------- ---------- -----------
link-aggregation 10 LINKUP UP 2-4093
----------------------------------------------------------------
Node ID Role System-MAC System-Priority
----- ---- ---- ------------ ------------------
Self 1 SLAVE 0001.7a95.000b 32768
Remote 2 MASTER 0001.7a95.000b 32768
Device1#
Device1#show mlag group
Number of mlags configured : 2
mlag-id: 1 (link-aggregation1)
--Link status: LINKUP
--Data status: UP
--Active mlag vlans: 2-4093
--Redirect FSM state: INVALID
--Isolate FSM state: ISOLATE
--Block FSM state: UNBLOCK
--Remote interface: link-aggregation 1
--Remote link status: LINKUP
--Remote data status: UP
mlag-id: 20 (link-aggregation 20)
--Link status: LINKUP
--Data status: UP
--Active mlag vlans: 2-4093
--Redirect FSM state: INVALID
--Isolate FSM state: ISOLATE
--Block FSM state: UNBLOCK
--Remote interface: link-aggregation 20
--Remote link status: LINKUP
--Remote data status: UP
Device1#