Nexus segment routing mapping client

[config]

Hello community, 

Does the Nexus 93180 support the segment routing mapping client? Could you give me a hint? I can't get the prefix sid from the segment routing mapping server ( 

[M02@rt37]

Hello @config 

FYI

--https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/92x/label-switching/b-cisco-nexus-9000-series-nx-os-label-switching-configuration-guide-92x/b-cisco-nexus-9000-series-nx-os-label-switching-configuration-guide-92x_chapter_01000.html

[config]

Hello M02@rt37 

Thank you for your answer. But please let me explain. I have configured segment routing on my Nexus as written here. It really works. Nexus receives sid prefix from other routers.

But I also have mpls ldp domen, and I use segment routing mapping server to mark loopback interfaces of mpls ldp routers. But unfortunately Nexus is not getting exactly the prefix sid from the mapping server. Nexus doesn't seem to have a segment routing mapping servers client. I hope I am wrong about this.

[M02@rt37]

I think you're right...unfortunately. I'm gonna check that.

[config]

Hello,

Have you been able to check it ?

This is what debugging message I see when nexus tries to get SID prefix from SR mapping server:

2025 Jun 16 13:58:10.017062 ospf: UNDERLAY [18272] (default) Get Remote SID prefix 10.111.100.140/32 area 0.0.0.0 adv 10.111.100.247 path Inter algo Shortest Path First (SPF)
2025 Jun 16 13:58:10.017075 ospf: UNDERLAY [18272] (default) Get best epl for prefix 10.111.100.140/32 in area 0.0.0.0 adv 10.111.100.247 path Inter algo Shortest Path First (SPF)
2025 Jun 16 13:58:10.017082 ospf: UNDERLAY [18272] (default) Get Remote SID prefix 10.111.100.140/32 Entry NotFound
2025 Jun 16 13:58:10.017089 ospf: UNDERLAY [18272] (default) Get Remote SID 10.111.100.140/32 LSA NotFound

This is what debugging message I see when nexus tries to get SID prefix from SR neighbor router:

2025 Jun 16 13:58:09.991601 ospf: UNDERLAY [18272] (default) Get Remote SID prefix 10.1.100.229/32 area 0.0.0.0 adv 10.1.100.229 path Intra algo Shortest Path First (SPF)
2025 Jun 16 13:58:09.991610 ospf: UNDERLAY [18272] (default) Get best epl for prefix 10.1.100.229/32 in area 0.0.0.0 adv 10.1.100.229 path Intra algo Shortest Path First (SPF)
2025 Jun 16 13:58:09.991625 ospf: UNDERLAY [18272] (default) Prefix best LSA found - prefix 10.1.100.229/32 sid 229 rt Intra lsa 7.0.0.1(0xa)10.1.100.229 (0x8000adcf) (0x0c86) (1419)
2025 Jun 16 13:58:09.991638 ospf: UNDERLAY [18272] (default) Get Remote SID prefix 10.1.100.229/32 sid 229 rt Intra lsa 7.0.0.1(0xa)10.1.100.229 (0x8000adcf) (0x0c86) (1419) - No Prefix conflict
2025 Jun 16 13:58:09.991652 ospf: UNDERLAY [18272] (default) Check any SID conflict for prefix 10.1.100.229/32 sid 229 rt Intra lsa 7.0.0.1(0xa)10.1.100.229 (0x8000adcf) (0x0c86) (1419) in area 0.0.0.0
2025 Jun 16 13:58:09.991666 ospf: UNDERLAY [18272] (default) No SID conflict for prefix 10.1.100.229/32 sid 229 rt Intra lsa 7.0.0.1(0xa)10.1.100.229 (0x8000adcf) (0x0c86) (1419) in area 0.0.0.0
2025 Jun 16 13:58:09.991678 ospf: UNDERLAY [18272] (default) SegRt Get local-label sid 229 lbl 100229
2025 Jun 16 13:58:09.991686 ospf: UNDERLAY [18272] (default) SegRt Get remote-label area 0.0.0.0 nbr 10.1.100.102 sid 229
2025 Jun 16 13:58:09.991694 ospf: UNDERLAY [18272] (default) SegRt Get SRGB area 0.0.0.0 nbr 10.1.100.102 sid 229
2025 Jun 16 13:58:09.991701 ospf: UNDERLAY [18272] (default) SegRt Get remote-label sid 229 lbl 100229