Create an Anycast IP Gateway Interface

Before you begin

  • Create the VLAN.
  • Configure an IP address for the VLAN.
  • Create the Layer 2 VSN I-SID. If the I-SID you manually type in this task does not exist, creation of the Anycast IP Gateway interface fails. If you are uncertain which I-SIDs already exist, or to avoid typing errors, you can create an interface using Create an Anycast IP Gateway Interface On a Specific I-SID.
  • Map the customer VLAN to the I-SID.
  • Optionally, associate the VLAN with a VRF (Layer 3 VSN), and enable IP-VPN on that VRF.
  • For a OneIp interface, configure a CLIP interface in the corresponding VRF.

About this task

Anycast IP Gateway routers advertise the configured routing interfaces, including the gateway MAC addresses and the gateway IP addresses. Associate the routing interfaces with Layer 2 VSNs, and configure each Anycast IP Gateway-enabled interface with a gateway IP and a gateway MAC.

In addition to adding new interfaces through the Insert Interfaces dialog, you can use the table-based Interfaces tab to modify existing configuration of all Anycast IP Gateway interfaces.

Procedure

  1. In the navigation pane, expand Configuration > Fabric.
  2. Select Anycast Gateway.
  3. Select Interfaces.
  4. Select Insert.
  5. In L2vsnIsid, type the I-SID to associate with the interface.
  6. In GwAddr, type the gateway IP address.
  7. Optional: In VrId, type the virtual router ID for the gateway MAC.
  8. Optional: Select OneIp to make the gateway IP the same as the VLAN IP.
  9. Optional: For a One IP interface, specify the prefix length for the address in PrefixLen.
  10. Select Enable.
  11. Select Insert.

Interfaces Field Descriptions

Use the data in the following table to use the Interfaces tab.

Name Description

L2vsnIsid

Specifies the Layer 2 VSN I-SID associated with the Anycast IP Gateway routing interface.

GwAddrType

Displays the address type. Currently, only IPv4 is supported. This parameter only displays on the Insert Interfaces dialog.
GwAddr

Specifies the gateway IPv4 address. The gateway IP must be in different subnets for different interfaces, and must be the same on different routers for the same associated Layer 2 VSNs.
PrefixLen Specifies the prefix length for a One IP address.
VrId

Specifies the virtual router ID, which defines the gateway MAC as a VRRP MAC. The gateway MAC must be the same on different routers for the same associated Layer 2 VSN.

If you do not specify the VRID as part of the command, the default value is VRID 39 (hexadecimal 27), which translates to the MAC of 00:00:5e:00:01:27.
GwMac Displays the Anycast IP Gateway MAC address.
VrfId Displays the VRF ID associated with the Anycast IP Gateway routing interface.
VlanId Displays the VLAN ID associated with the Anycast IP Gateway routing interface.
OneIp

Configures the routing interface as a One IP interface. You can configure a different gateway IP from the VLAN IP, or as a One IP interface to use the same IP as the VLAN.
Enable Configures if the Anycast IP Gateway routing interface is enabled. The default is disabled (false).
Operating State Displays the operating state of the Anycast IP Gateway routing interface: up or down.
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