Configure Link Aggregation

Each link aggregation interface can have one or more physical interface members. To specify a physical interface on your XTM device for use in a link aggregation interface, you must first configure the physical interfaces and select Link Aggregation as the interface type. You can then create the link aggregation interface and add one or more physical interfaces of the link aggregation type as the link aggregation members.

Configure Link Aggregation Members

  1. Select Network > Interfaces.
    The Network Interfaces page appears.
  2. Select an interface and click Edit.

Screen shot of the Interface Configuration - Link Aggregation dialog box.

  1. From the Interface Type drop-down list, select Link Aggregation.
  2. In the Interface Name (Alias) text box, you can use the default name or change it to one that more closely reflects how this interface is used.
  3. (Optional) In the Interface Description text box, type a description of the interface.
  4. Click Save.
  5. Repeat these steps for each interface that you want to configure as a member of a link aggregation interface.

If you change an interface type from External to Link Aggregation, any 1 to 1 NAT rules previously associated with the external interface are automatically removed.

Add a Link Aggregation Interface

  1. Select Network > Link Aggregation.
    The Link Aggregation page appears. The interfaces configured as type Link Aggregation are listed at the top.

Screen shot of the Link Aggregation page

  1. To configure additional link aggregation members, click Configure.
  2. To add a new Link Aggregation interface, click Add.
    The Link Aggregation settings page appears.

Screen shot of the Link Aggregation Settings for a link aggregation interface

  1. In the Name text box, type a name for this link aggregation configuration.
  2. (Optional) In the Description text box, type a description for the link aggregation configuration
  3. From the Mode drop-down list, select the link aggregation mode to use. You can choose Static, Dynamic, or Active-backup.

For information about link aggregation modes, see About Link Aggregation.

If you choose Static or Dynamic mode, your connected switch or router must also support and be configured to use the same mode.

  1. In the Type drop-down list select the interface type. For a Link Aggregation interface, you can set the type to Trusted, Optional, Custom, External, Bridge, or VLAN.
  2. Configure the settings for the interface type you selected.
    Configure the other settings the same way that you would configure them for any other interface.

For a Trusted, Optional, or Custom interface:

Type the IPv4 interface private IP address in slash notation. For more information about private IP addresses, see About Private IP Addresses.

Select the Network tab. Configure the DHCP settings. For more information about DHCP settings, see Configure IPv4 DHCP in Mixed Routing Mode or Configure DHCP Relay.

To enable and configure IPv6, select the IPv6 tab. For information about the IPv6 settings, see Enable IPv6 for a Trusted or Optional Interface.

For an External interface:

Select the Network tab. Type a static IPv4 address and default gateway, or configure the external interface to use DHCP or PPPoE to get an IP address. For information about external interface network settings, see Configure an External Interface.

To enable and configure IPv6, select the IPv6 tab. For information about the IPv6 settings, see Enable IPv6 for an External Interface.

IPv6 on a link aggregation interface is supported in Fireware XTM v11.9 and higher.

For a Bridge interface:

Select the network bridge interface you want to add this link aggregation interface to. You must assign this interface to a Bridge. For more information, see Assign a Network Interface to a Bridge.

For a VLAN interface:

Select the tagged or untagged VLANs you want to add this link aggregation interface to. You must assign this interface to a VLAN. For more information, see Assign Interfaces to a VLAN.

  1. To configure a secondary network on this interface, select the Secondary tab.
    For information about how to configure a secondary network, see Add a Secondary Network IP Address.
  2. To configure network interface card settings, select the Advanced tab.

Screen shot of the Link Aggregation Advanced tab

The network interface settings apply to all physical interfaces assigned to this link aggregation interface. For more information, see Network Interface Card (NIC) Settings.

Physical interfaces that are members of a link aggregation interface must support the same link speed. On XTM 505, 510, 520, or 530 devices, interface 0 (Eth0) supports a lower maximum link speed than the other interfaces. If you use Eth0 as a member of a link aggregation interface on these models, you must set the Link Speed to 100 Mbps or lower in the link aggregation interface configuration and on the connected network switches.

Unlike a physical interface configuration, you cannot configure Traffic Management, QoS, or static MAC/IP address binding in the interface advanced settings. A link aggregation interface does not support those features.

Connect Link Aggregation Interfaces to a Switch

If you configure a link aggregation interface to use dynamic or static link aggregation, you must configure the switch that these interfaces connect with to use the same link aggregation mode and link speed. Then, you can connect the cables from the member interfaces on the XTM device to the other network device.

If the link aggregation interface uses Active-backup mode, you do not need to enable link aggregation on your connected switches or routers.

For more information about link aggregation network modes, see About Link Aggregation.

Read the Link Aggregation Settings Table

After you configure link aggregation settings, you can see a summary of the settings for each link aggregation configuration on the Link Aggregation page. Select Network > Link Aggregation.

The columns show information about each link aggregation interface.

Name

The interface name. You can use this name in policies just as you would any other interface name.

Type

The interface type. Link aggregation interfaces can be Trusted, External, Optional, Bridge or VLAN.

IPv4 Address

The interface IPv4 address. This column shows DHCP or PPPoE client for an external interface configured to get an IP address from a DHCP or PPPoE server.

IPv6 Address

The interface IPv6 address. This column shows DHCP or PPPoE client for an external interface configured to get an IP address from a DHCP or PPPoE server.

Interfaces

The interface numbers of the physical interfaces that are members of this link aggregation interface.

Edit or Remove a Link Aggregation Interface

From the Link Aggregation page, you can edit or remove a link aggregation interface. When you remove a link aggregation interface, the member interfaces are still set to type Link Aggregation, but they are no longer assigned to any link aggregation interface.

To edit or delete a link aggregation configuration:

  1. Select Network > Link Aggregation.
  2. Select the interface you want to edit or delete.

See Also

About Link Aggregation

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