[c-nsp] SR-TE

dip diptanshu.singh at gmail.com
Thu Sep 17 16:41:09 EDT 2020


It's been almost 4 yrs since I looked at SR-TE. How are you mapping traffic
to your SR-TE tunnels? Like "auto-route announce"?

On Thu, Sep 17, 2020 at 1:34 PM <aaron1 at gvtc.com> wrote:

> Anyone have ideas why I can't seem to get traffic to flow via this SR-TE
> path?  I have configs if you would like to see them.
>
>
>
> Seems that the BSID (100) is in the LFIB but I'm not seeing traffic through
> it.  Also the traceroute on the r10 ce still shows flowing via the dynamic
> vanilla SR path via r21.  I'd like to have the SR-TE path carry the
> customer
> traffic via r24----r23
>
>
>
>
>
> RP/0/0/CPU0:r20#sh mpls for
>
> Thu Sep 17 15:14:28.224 CST
>
> Local  Outgoing    Prefix             Outgoing     Next Hop        Bytes
>
>
> Label  Label       or ID              Interface                    Switched
>
>
> ------ ----------- ------------------ ------------ ---------------
> ------------
>
> 100    Pop         No ID              my-srte-poli point2point     0
>
>
> 16022  16022       SR Pfx (idx 22)    Gi0/0/0/0    10.20.1.2       3864764
>
>
> 16024  Pop         SR Pfx (idx 24)    Gi0/0/0/1    10.20.1.21      0
>
>
> 24000  Pop         SR Adj (idx 0)     Gi0/0/0/0    10.20.1.2       0
>
>
> 24001  Pop         SR Adj (idx 0)     Gi0/0/0/1    10.20.1.21      0
>
>
> 24002  Aggregate   one: Per-VRF Aggr[V]   \
>
>
>
>                                       one
> 2895172236
>
>
>
> RP/0/0/CPU0:r20#sh segment-routing traffic-eng policy
>
> Thu Sep 17 15:14:33.523 CST
>
>
>
> SR-TE policy database
>
> ---------------------
>
>
>
> Name: my-srte-policy (Color: 1, End-point: 10.20.0.22)
>
>   Status:
>
>     Admin: up  Operational: up for 00:00:16 (since Sep 17 15:14:17.095)
>
>   Candidate-paths:
>
>     Preference 1:
>
>       Explicit: segment-list my-srte-sidlist-1 (active)
>
>         Weight: 0
>
>           16024
>
>           24002
>
>           16022
>
>   Attributes:
>
>     Binding SID: 100
>
>       Allocation mode: explicit
>
>       State: programmed
>
>       Policy selected: yes
>
>     Forward Class: 0
>
>
>
>
>
> r10               r30
>
> |                 |
>
> |                 |
>
> r20-----r21-----r22
>
> |                 |
>
> |                 |
>
> r24-------------r23
>
>
>
> r10 and r30 are ce's
>
>
>
>
>
>
>
>
>
> Aaron
>
> aaron1 at gvtc.com
>
>
>
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