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To configure link aggregation on Redback SMS routers you need to do the following.

Create the link group interface and assign an IP address to it

[local]Redback(config)#context local
[local]Redback(config-ctx)#interface AMS-IX
[local]Redback(config-if)#ip address 195.69.x.x/23
[local]Redback(config-if)#exit

Create the link group and bind it to its interface

[local]Redback(config)#link-group AMS-IX ether
[local]Redback(config-link-group)#bind interface AMS-IX local

Configure an ethernet port and add it to the link group

[local]Redback(config-config)#port ethernet 1/1
[local]Redback(config-port)#no shutdown
[local]Redback(config-port)#link-group AMS-IX
[local]Redback(config-port)#exit

Configure another ehternet port and add it to the link group

[local]Redback(config-config)#port ethernet 1/2
[local]Redback(config-port)#no shutdown
[local]Redback(config-port)#link-group AMS-IX
[local]Redback(config-port)#exit

To match the AMS-IX arp timeout (4 hours) you need to configure this under the interface

[local]Redback(config)#context local
[local]Redback(config-ctx)#int AMS-IX
[local]Redback(config-if)#ip arp timeout 14400
[local]Redback(config-port)#exit

Also, you can set your aggregated min-links to a value that will cause the bundle to drop in the event that your links can no longer support the amount of traffic you move trough the link-group.Thus, 2-port aggregated link, pushing 1.2 Gbps sustained across, drop bundle if n == 1;

[local]Redback(config)#link-group AMS-IX ether
[local]Redback(config-link-group)#minimum-links 2
[local]Redback(config-link-group)#exit

This config is made to interconnect with an aggregated link towards the AMS-IX. For other Link aggregation interconnects you need to make changes towards this config.

Networking, Tech, Work