ExtremeCloud SD-WAN Concepts

The topics in this section provide conceptual-based documentation for new ExtremeCloud SD-WAN-related features.

Table 1. SD-WAN product support
Feature	Product	Release introduced
Fabric Extend Integration with ExtremeCloud SD-WAN	5320 Series	Fabric Engine 8.10.1 Only 5320-48P-8XE and 5320-48T-8XE support more than one VRF with IP configuration. Beginning with Fabric Engine 9.0.3, you can specify the VRF that Auto-sense uses for SD-WAN on models that support a single active VRF.
	5420 Series	Fabric Engine 8.10.1
	5520 Series	Fabric Engine 8.10.1
	5720 Series	Fabric Engine 8.10.1
	7520 Series	Fabric Engine 8.10.1
	7720 Series	Fabric Engine 8.10.1
	VSP 4900 Series	VOSS 8.10.1
	VSP 7400 Series	VOSS 8.10.1
Auto-sense port Multi-area SPB support	5320 Series	Not Supported
	5420 Series	Not Supported
	5520 Series	Fabric Engine 9.0.3
	5720 Series	Fabric Engine 9.0.3
	7520 Series	Fabric Engine 9.0.3
	7720 Series	Fabric Engine 9.0.3
	VSP 4900 Series	Not Supported
	VSP 7400 Series	VOSS 9.0.3

The next section describes the Fabric Extend port state for Auto-sense.

Fabric Extend (FE) States

When Auto-sense is enabled, LLDP uses the FE TLV to create Fabric Extend tunnels between two Fabric switches that connect over the Internet through the SD-WAN Appliance. This functionality is supported on a single port of the switch.

The FE states are as follows:

SD-WAN
SD-WAN-PENDING

After the first Auto-sense port receives an FE-TLV, the port transitions to the SD-WAN state. All other Auto-sense ports transition to SD-WAN-PENDING state and remain unconfigured. When the first port transitions to the SD-WAN state, the switch verifies that VLAN 4047, VRF, and IS-IS logical interface configurations do not exist, and dynamically configures the following connectivity parameters:

SD-WAN as the VLAN name associated with VLAN 4047 with origin ZTF
sd-wan as the VRF name associated with the IP tunnel with origin DYNAMIC

Note

On switch models that support a single active VRF, Auto-sense cannot create the dynamic SD-WAN VRF if an IP configuration already exists but you can manually specify the VRF name that Auto-sense uses for the SD-WAN configuration on these models.
SD-WAN-<ifidx> as the tunnel name
SD-WAN Tunnel SrcIP as the name associated with the Fabric Extend underlay IP
IPv4 address for VLAN 4047
default route (0.0.0.0/0) with origin ZTF
Fabric Extend tunnels with origin ZTF for IS-IS logical interfaces
VLAN 4047 port membership
Link Debounce timer of 8000 milliseconds on the switch port that connects to SD-WAN Appliance, if a timer configuration does not already exist

In the following cases, the port transitions to the SD-WAN-PENDING state:

A secondary Auto-sense port receives an FE-TLV.
The switch configuration includes the dynamic connectivity parameters, such as VLAN 4047, VRF, and IS-IS logical interfaces with the specified source IP address regardless of origin.