Configure Fabric Extend Logical Interfaces

Use the following procedures to configure Fabric Extend (FE) between a Main office to a Branch office, which is a typical deployment.

VSP 4450 Series supports FE, but the switch must connect to an Open Networking Adapter (ONA) because the VSP 4450 Series does not support FE natively:

Configure Fabric Extend Logical Interfaces for Native Support

About this task

Configuring Fabric Extend consists of two primary tasks: configuring the tunnel source address and configuring the logical interface. These tasks must be completed on both ends of the tunnel.

VRF is an optional parameter. If a VRF is not configured, then FE uses the GRT.

Procedure

In the navigation pane, expand Configuration > IS-IS.
Select IS-IS.
Select the Logical Interfaces tab.
Select Insert.
In Id, type the index number that uniquely identifies this logical interface.
For Type, select the type of core network that the tunnel will traverse:

Note

Different fields will be available depending on the type of core network you select.
- If it is a Layer 2 Core, select layer2.
- If it is a Layer 3 Core, select ip.
For Name, type the name of this logical interface.
To enable BFD, select enable for BFDEnable.
For a Layer 2 Core, configure the following fields:

Note

This step does not apply to XA1400 Series.
1. For DestIfIndex, select the physical port that the logical interface connects to or enter the name of the MLT.
2. In Vids, type the list of VLANs for this logical interface.
3. In PrimaryVid, type the primary tunnel VLAN ID.
  
  Note
  
  The primary VLAN ID must be one of the VIDs listed in the Vids field.
For a Layer 3 Core, complete the following field:
1. In DestIPAddr, type the destination IP address for the logical interface.
For XA1400 Series only, make the following selections:
1. For Compression, select whether to enable compression for a Fabric Extend over IPsec connection.
2. For IpsecEnable, select whether to enable a Fabric Extend over IPsec connection for the logical interface.
3. Select the IPsec authentication method.
4. For a pre-shared key, in AuthenticationKey, type the authentication key to secure your Fabric Extend over IPsec connection fo the logical interface.
5. In ShapingRate, type the value in Mbps of the shaper used for Egress Tunnel Shaping.
6. In Mtu, type a value to specify the size of the maximum transmission unit (MTU).
7. For Esp, select the Encapsulating Security Payload (ESP) cipher suite for IPsec.
  
  Note
  
  You cannot change the ESP cipher suite when IPsec is enabled on the FE tunnel.
8. In IpsecTunnelDestAddress, type the destination IP address for the IPsec tunnel.
9. For TunnelSourceType, select the source type for the IPsec tunnel.
10. In TunnelSourceAddress, type the source IP address for the IPsec tunnel.
11. If you are using a VRF, in TunnelVrf, type the VRF name for the source IPsec tunnel.
Select Insert.

Configure Fabric Extend Logical Interfaces for ONA Support

About this task

Configuring Fabric Extend consists of two primary tasks: configuring the tunnel source address and configuring the logical interface. These tasks must be completed on both ends of the tunnel.

The VSP 4450 Series source address command is different than other platforms. The logical interface commands are different between Layer 2 and Layer 3 networks.

Note

The interface VLAN that connects 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.

VRF is an optional parameter. If a VRF is not configured, then FE uses the GRT.

Procedure

In the navigation pane, expand Configuration > IS-IS.
Select IS-IS.
Select the Logical Interfaces tab.
Select Insert.
In Id, type the index number that uniquely identifies this logical interface.
For Name, type the name of this logical interface.
For Type, select the type of core network that the tunnel will traverse:

Note

Different fields will be available depending on the type of core network you select.
- If it is a Layer 2 Core, select layer2.
- If it is a Layer 3 Core, select ip.
For a Layer 2 Core, complete the following fields:
1. For DestIfIndex, select the physical port that the logical interface connects to or enter the name of the MLT.
2. In Vids, type the list of VLANs for this logical interface.
3. In PrimaryVid, type the primary tunnel VLAN ID.
  
  Note
  
  The primary VLAN ID must be one of the VIDs listed in the Vids field.
For a Layer 3 Core, configure the following field:
1. In DestIPAddr, type the destination IP address for the logical interface.
For IpsecEnable, select whether to enable a Fabric Extend over IPsec connection for the logical interface.
For AuthenticationKey field, type the authentication key to secure your Fabric Extend over IPsec connection fo the logical interface.
For ShapingRate field, type the value in Mbps of the shaper used for Egress Tunnel Shaping.
Select Insert.

Logical Interfaces Field Descriptions

Use the data in the following table to use the Logical Interfaces tab and the Insert Logical Interfaces dialog. The available fields in the dialog differ depending on the type of core you select: layer 2 or ip.


Name	Description
Id	Specifies the index number that uniquely identifies this logical interface. This field displays on the Insert Logical Interfaces dialog only.
IfIndex	Specifies the index number that uniquely identifies this logical interface. This field is read-only. This field displays on the Logical Interfaces tab only.
Name	Specifies the administratively assigned name of this logical interface, which can be up to 64 characters.
Type Note: Exception: Type Layer 2 is not supported on XA1400 Series.	Specifies the type of logical interface to create: Specify layer 2 for a Layer 2 core network that the tunnel will traverse. Specify ip for a Layer 3 core network that the tunnel will traverse.
DestIPAddr	Specifies the destination IP address for the IP-type logical interface.
DestIfIndex Note: Exception: Not supported on XA1400 Series.	Specifies the physical port or MultiLink Trunking (MLT) that the Layer 2 logical interface is connected to.
Vids Note: Exception: Not supported on XA1400 Series.	Specifies the list of VLANs that are associated with this logical interface.
PrimaryVid Note: Exception: Not supported on XA1400 Series.	Specifies the primary tunnel VLAN ID associated with this Layer 2 Intermediate-System-to-Intermediate-System (IS-IS) logical interface.
CircIndex	Identifies the IS-IS circuit created under the logical interface. This field displays on the Logical Interfaces tab only.
NextHopVrf Note: Exception: Not supported on XA1400 Series.	Identifies the next-hop VRF name to reach the logical tunnel destination IP. This field displays on the Logical Interfaces tab only.
IpsecEnable Note: Exception: Only supported on XA1400 Series.	Specifies whether the logical interface should use IPsec.
AuthenticationKey Note: Exception: Only supported on XA1400 Series.	Specifies the authentication key of this logical interface, which can be up to 32 characters.
ShapingRate Note: Exception: Only supported on XA1400 Series.	Specifies the value, in Mbps, of the Egress Tunnel Shaper applied to the logical interface.
Mtu Note: Exception: Only supported on XA1400 Series.	Specifies the Maximum Transmission Unit (MTU) size for each logical interface. The default MTU value is 1950.
IpsecTunnelDestAddress Note: Exception: Only supported on XA1400 Series.	Specifies the destination IP address for the IPsec tunnel.
BfdEnable Note: Exception: Not supported on VSP 8600 Series or XA1400 Series.	Enables or disables BFD on an IS-IS Logical Interface.
IpsecResponderOnly Note: Exception: Only supported on XA1400 Series.	Specifies whether the device is a Responder device in an IPsec Network Address Translation Traversal (NAT-T) connection.
IpsecRemoteNatIPAddr Note: Exception: Only supported on XA1400 Series.	Specifies the public IP address of the NAT router connected to the Responder device in an IPsec NAT-T connection.
IpsecAuthMethod Note: Exception: Only supported on XA1400 Series.	Configures the IPsec authentication method for the tunnel as either a pre-shared key or RSA signature for digital certificates. The default is pre-shared key.
CertSubjectName Note: Exception: Only supported on XA1400 Series.	Specifies the digital certificate subject name used as the identity certificate.
Compression Note: Exception: Only supported on XA1400 Series.	Reduces the size of the IP datagram to improve the communication performance between hosts connected behind Backbone Edge Bridges (BEB). Tip: As a best practice, use IPsec compression only for Fabric Extend tunnels where latency is greater than 70ms.
FragmentBeforeEncrypt Note: Exception: Only supported on XA1400 Series.	Enables or disables the fragmentation of packets before IPsec encryption on the tunnel. By default, fragmentation before encryption is disabled.
TunnelSourceType Note: Exception: Only supported on XA1400 Series.	Specifies the type of source IP address for the IPsec tunnel. global specifies the tunnel source address configured in the IpTunnelSourceAddress field of the ISIS Globals tab. static specifies the manually configured source IP address for the IPsec tunnel. dhcp specifies the source IP address automatically obtained from the management IP assigned through DHCP. The default is global.
TunnelSourceAddress Note: Exception: Only supported on XA1400 Series.	Specifies the source IP address for the IPsec tunnel.
TunnelVrf Note: Exception: Only supported on XA1400 Series.	Specifies the VRF name associated with the IPsec tunnel.
Esp Note: Exception: Only supported on XA1400 Series.	Specifies the Encapsulating Security Payload (ESP) cipher suite for IPsec. aes128gcm16-sha256 specifies the AES cipher with a 128-bit encryption key and GCM block mode. aes256-sha256 specifies the AES cipher with a 256-bit encryption key and CBC block mode (for QAT performance mode). aes256gcm16-sha256 specifies the AES cipher with a 256-bit encryption key and GCM block mode. The default value is aes128gcm16-sha256.