This Support-KB describes how to configure TVI-Based WAN interfaces in Concerto. The below was testing on Concerto 11.4.1.
Description
TVI-based WAN interface is a tunnel virtual interface which can be used when two or more physical interfaces are attached to the same transport virtual router. It manages two or more physical interfaces as a single WAN interface in the SD-WAN overlay network.
Benefits
Bandwidth optimization : The number of SLA paths to remote appliances does not increase with the number of physical local interfaces on the same transport network.
Limitations
- TVI-based WAN interfaces support only static IP addressing. TVI based interfaces do not support DHCP.
- They also do not support QoS.
Configuration
- Configure WAN TVI logical interface
- Map the WAN TVI logical interface to two or more VNI physical ports
WAN TVI logical interface:
A new sub-category is added. IP address is assigned to TVI interface.
Map WAN TVI logical interface to VNI interfaces:
A new category called VNI For WAN TVI is added and is associated with vni-0/0 here for example.
The same can be use to add VNI-WAN-2 associated with vni-0/3.
Below is the configuration output of TVI-WAN based interfaces :
Verification
- All 03 TVI-WAN Based interfaces are up
- Device with WAN TVI-Based Interface
b. Remote branch device with normal WAN VNI Interfaces
2. SLA Probes are exchanged only on tvi-wan interface instead of both vni wan interfaces
3. Data path and control are up with remote branch and Controller.
4. Routing:
Concerto installs two default routes in routing instance Internet-Transport-VR.
In production environment WAN TVI IP address should be routable in Internet.
It can be either a public IP address or Natted behind underlay Internet gateway.
