SRTE

[username11]

I configured the Policy to choose the path followed by traffic between 100.100.100.100 and 100.100.100.101 but there is a problem 

[balaji.bandi]

that is confiuration of TE policy, how about routing config, how you want to take which patch to reach 100.100.100.100 to 100.100.100.101

below example help you configuring routing :

https://protocoholic.com/2021/08/06/gns3-cisco-lab-srtesegment-routing-traffic-engineering-wecmpweighted-ecmp-configuration-on-cisco-ios-xr-and-ios-xe-routers/

[username11]

almost the same but I did not know the problem

[balaji.bandi]

Can you attachedconfig of  all the device required config(not screenshots).

[username11]

@balaji.bandi 

sorry l can only screenshots 

[Harold Ritter · Accepted solution]

Hi @username11 ,

As @balaji.bandi indicated, it is one thing to define a policy, but you also need to direct traffic into that policy. This is referred to as traffic steering. There are many ways to steer traffic into a policy. For testing you could use a static route to do that.

Please refer to the following documentation to see how to steer the traffic into the policy, using a static route.

https://www.cisco.com/c/en/us/td/docs/routers/asr903/software/guide/seg-routing/17-1-1/b-segment-routing-17-1-1-asr900/m-static-route-traffic-steering-sr-te-policy.html

Regards,

[username11]

HI @Harold Ritter 

the same problem (with static route) I repeat the configuration and the same problem 

[username11]

maybe because there are two interface,and the router don't know the interface of source

[Harold Ritter]

Hi @username11 ,

This should not be happening. This message will go away once you fixed the other issues.

Regards,

[Harold Ritter]

Hi @username11 ,

Can you check the following two things:

1. Make sure you add the following configuration to your policy POL1:

policy POL1
candidate-paths

preference 200
constraints
segments
dataplane mpls

2. Make sure all your core interfaces are configured as point to point under your routing protocol.

3. What IOS-XE version are you using?

Regards,

[username11]

HI Mr @Harold Ritter 

the 1 and 2 are verified

the version of csr 1000v is 17.3.2

[Harold Ritter]

Hi @username11 ,

You should also make sure you use the following command under your core routing protocol:

router ospf xxx
distribute link-state

or

router isis xxx

distribute link-state

Can you also join a new

show segment-routing traffic-end pol all

output after making the changes I suggested.

Regards,

[username11]

hi Mr @Harold Ritter 

[Harold Ritter]

Hi @username11 ,

Could you please provide the configuration for PE-SR1 and the output from

show segment-routing traffic-eng topology ipv4?

Regards,

[username11]

Hi Mr @Harold Ritter 

config PE-SR1