Configure Fabric Extend on VSP 4450 Series

Use this procedure to configure Fabric Extend on a VSP 4450 Series switch. This switch requires you to deploy the Open Networking Adapter (ONA) if you want to support Fabric Extend.

You must configure Fabric Extend on both ends of the tunnel. A typical Fabric Extend deployment would be between a Main office and a Branch office.

Before you begin

If using the tunnel originating address on a VRF, configure a CLIP and tunnel source IP address on the VRF.

If using the tunnel originating address, the logical interface address, on the GRT, Fabric Extend has the following requirements:

The tunnel source IP address must be on the GRT, not on a VRF.

Note

To configure Fabric Extend using a tunnel source IP address on the GRT, use separate IP addresses for the SPBM IP Shortcuts (ip source-address) and the Fabric Extend ip-tunnel-source address. Exclude the ip-source-address address with an IS-IS accept policy if you want these IP addresses to be the same. You cannot use the redistribute command with a route-map exclusion.

Specify a CLIP interface to use as the ip source-address for SPBM IP shortcuts.
If you enable IP Shortcuts, you must configure an IS-IS accept policy or use an exclude route-map to ensure that tunnel destination IP addresses are not learned through IS-IS.

About this task

The tunnel source IP address can be a brouter port IP, a CLIP IP, or a VLAN IP.

Remote management of the VSP 4450 Series is possible after establishing IP Shortcuts over IS-IS. Alternatively, you can enable GRT-VRF redistribution locally.

The VSP 4450 Series source address command is different from other platforms because of ONA support. The logical interface commands are different between Layer 2 and Layer 3 networks.

Note

VRF is an optional parameter. If you do not configure a VRF, then FE uses the GRT.

Note

The interface VLAN connecting to the ONA network port is always in the GRT and the member port that the VLAN is part of is always an access port.

Procedure

Enter IS-IS Router Configuration mode:

enable

configure terminal

router isis
Configure the IP tunnel source address on the port that connects to the Device side of the ONA:

ip-tunnel-source-address <A.B.C.D> port <slot/port> [mtu <mtu_value>] [vrf WORD<1–16>]
Exit back into Global Configuration mode:

exit
Use one of the following commands to create a logical IS-IS interface:
- In a network with a Layer 3 Core, enter:
  
  logical-intf isis <1–255> dest-ip <A.B.C.D> [name WORD<1–64>]
- In a network with a Layer 2 Core, enter:
  
  logical-intf isis <1–255> vid {vlan-id[-vlan-id][,...]} primary-vid <2–4059> port <slot/port> mlt PT_MLT<1-512> [name WORD<1–64>]
  
  Note
  
  The primary VLAN ID (primary-vid) must be one of the VIDs in the vid {vlan-id[-vlan-id][,...]}.

What to do next

Configure Fabric Extend on the switch at the other end of the tunnel. Use the procedures that apply to that model of switch.