TE in a SD WAN environment

[anishk]

We have TE agents in our office locations, and offices are having SDWAN with dual internet links, since SD WAN is optimising the traffic over multiple links, its confusing the TE agents and they are unable to caputreu packet loss , latency over a specific link.

Any solution for this?

[lugaonac · Accepted solution]

Hello anishk,

The following is assuming that you are load balancing traffic across the two SD-WAN transports:

If what you want is to monitor the performance of the same app, over both links, at the same time; you can create two tests to the same target and have the SD-WAN Data Policy pin test traffic to a specific color.

You will also need something for the SD-WAN router to differentiate traffic between the two tests, for example a DSCP marking.

Here is a logic example:

• Test 1: to test.com - DSCP value X

Data Policy match on target test.com and DSCP value X, use color 1

• Test 2: to test.com - DSCP value Y

Data Policy match on target test.com and DSCP value Y, use color 2

Note: if you are also load balancing on the Hub's egress, you will need to create a Data Policy for the return traffic (Target to Agent) so that the return traffic also follows the specified color.

[anishk]

thank you