A link aggregation (LA) interface is a group of physical interfaces that you configure to work together as a single logical interface. You can configure a link aggregation interface only on a Firebox configured in mixed routing mode. When you use link aggregation, you connect the link aggregation interfaces to a switch, and configure the connected switch to use the same link aggregation mode and link speed.
This example describes how to configure two link aggregation interfaces for an active/passive FireCluster and describes how to configure link aggregation groups on the connected switches. Link Aggregation is supported only for active/passive FireCluster.
In this example:
- Interfaces 0 and 1 are members of an external link aggregation interface that connects to the Internet.
- Interfaces 2 and 3 are members of an internal link aggregation interface that connects to the trusted network.
- Each connected switch is configured with two link aggregation groups, one for each group of interfaces that connect to each cluster member.
Configure Link Aggregation Interfaces
Add two link aggregation interfaces, with physical interfaces as members. You can configure each link aggregation interface in Static or Dynamic (802.3ad) mode. In this example, each link aggregation interface has two physical interface members.
- Interfaces 0 and 1 are members of LA-External
- Interfaces 2 and 3 are members of LA-Trusted
Configure the FireCluster Management Interface
To manage this FireCluster from the trusted network, configure the FireCluster management interface to use the trusted link aggregation interface.
- Set the cluster interface to the trusted link aggregation interface.
In this example, the interface is LA-Trusted.
- For each cluster member, set the Management IP addresses to an IP address on the subnet of the trusted link aggregation interface.
In this example, the IP address of LA-Trusted is 10.0.100.1/24, and so the management IP addresses are also on the 10.0.100.0/24 subnet.
Configure Connected Switches
On each connected switch configure separate link aggregation groups for the ports that connect to each cluster member.
To configure the switch for the external link aggregation interface members:
- Connect interfaces 0 and 1 of each cluster member to a switch between the FireCluster and the Internet.
- On the switch, configure two link aggregation groups, one for the ports that connect to Member1 and one for the ports that connect to Member2.
To configure the switch for the trusted link aggregation interface members:
- Connect interfaces 2 and 3 of each cluster member to a switch between the FireCluster and the trusted network.
- On the switch, configure two link aggregation groups, one for the ports that connect to Member1 and one for the ports that connect to Member2.