Support

Creating a Multi-port Trunk with an External Switch for Intel® Modular Server


Last Reviewed: 20-Jan-2017
Article ID: 000007392

You can optimize your external port usage by linking a group of ports together to form a single Link Aggregation Group (LAG). Aggregating ports multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. 

The Intel® Modular Server supports both static LAGs and Link Aggregation Control Protocol (LACP) LAGs.

Configure the switch
Enter Advanced Configuration on the switch
Open Layer 2 - Interface - LAG Configuration
Edit LAG1

Advanced Configuration

Add a Description. For this example, we will be connecting to a Cisco* switch.
It is best to leave the other settings at their defaults.

LAG Configuration settings

Be sure to click Apply before clicking Close.
Open Layer 2 - Interface - LAG Membership
Edit ToCisco

LAG membership

Add the first four external ports

LAG membership settings example 1

LAG membership settings example 2

LAG membership settings example 3

Configure your external switch

Please consult your switch documentation for exact commands. For a Cisco* Catalyst 2900 XL Series Switch, the commands might be:

interface FastEthernet0/1
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 1 mode active
channel-protocol lacp interface FastEthernet0/2
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 1 mode active
channel-protocol lacp interface FastEthernet0/3
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 1 mode active
channel-protocol lacp interface FastEthernet0/4
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 1 mode active
channel-protocol lacp interface Port-channel2
description database
switchport trunk allowed vlan 1
switchport mode trunk

For a Cisco* Catalyst 3500 XL Series Switch, the commands might be:

interface GigabitEthernet0/1
description Database
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 2 mode active interface GigabitEthernet0/2
description Database
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 2 mode active interface GigabitEthernet0/3
description Database
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 2 mode active interface GigabitEthernet0/4
description Database
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1
switchport mode trunk
channel-group 2 mode active

Please note that these commands are examples only. Consult your switch documentation for the exact commands