Scalability Impact on Load Shared Groups

When static load sharing is used for the MLAG ports, and if there is a single link connecting the server node and the MLAG peer switches, the port does not need to be configured as a load shared port on the MLAG peer switches. Configuring LACP on MLAG ports can reduce the number of load shared ports that can be configured in the system.

Configuration Guidelines

Below are sample configurations.

Configuration on Peer1

create vlan "isc"   
configure vlan isc tag 4000   
enable sharing 5 grouping 5,10 lacp   
configure vlan "isc" add ports 5 tagged   
configure vlan "isc" ipaddress 1.1.1.1/8      

create mlag peer "peer2"   
configure mlag peer "peer2" ipaddress 1.1.1.2   
configure mlag peer "peer2" lacp-mac 00:11:22:33:44:55       

enable sharing 6 grouping 6,12 lacp   
enable sharing 18 grouping 18 lacp   
enable mlag port 6 peer "peer2" id 1   
enable mlag port 18 peer "peer2" id 2

Configuration on Peer2

create vlan "isc"   
configure vlan isc tag 4000   
enable sharing 5 grouping 5,10 lacp   
configure vlan "isc" add ports 5 tagged   
configure vlan "isc" ipaddress 1.1.1.2/8      

create mlag peer "peer1"   
configure mlag peer "peer1" ipaddress 1.1.1.1
configure mlag peer "peer1" lacp-mac 00:11:22:33:44:55      
enable sharing 20 grouping 20 lacp   
enable sharing 6 grouping 6,15 lacp       
enable mlag port 20 peer "peer1" id 1   
enable mlag port 6 peer "peer1" id 2 

Configuration on Server Nodes (assumed to be Extreme Switches)

enable sharing 1 grouping 1,2,3 lacp 
configure sharing 1 lacp system-priority 100     
configure lacp member-port 1 priority 10   
configure lacp member-port 2 priority 20   
configure lacp member-port 3 priority 15  
Here is an illustration of the configuration:
Click to expand in new window
LACP Ports in MLAG Configuration