Validate static LSP functionality with BGP resolved next-hop. This test verifies that the DUT can forward MPLS traffic based on a static LSP that uses a next-hop resolved via BGP.

• featureprofiles/topologies/atedut_4.testbed

1. Create the topology below:

                        |         | ---- | ATE Port 2 | ---- [eBGP peer]
   [ ATE Port 1 ] ----  |   DUT   |      |            |
                        |         | ---- | ATE Port 3 |
   

2. Configure eBGP peer on ATE Port 2 interface and advertise BGP-NH-V4= 203.0.200.0/24 and BGP-NH-V6= 2001:db8:128:200::/64

3. Configure static routes on the DUT to discard traffic destined for BGP-NH-V4 and BGP-NH-V6. These routes should point to a Null0 with an administrative distance of 254 to ensure they are less preferred than the BGP routes. This prevents the DUT from using its IGP to reach the BGP next-hops.

4. Enable MPLS forwarding.

5. Create egress static LSP for IPv4 and IPV6 traffic to pop the label and resolve the next-hop BGP-NH-V4 and BGP-NH-V6 respectivelly

network-instances:  
  - network-instance:  
    mpls:  
      lsps:  
        static-lsps:  
          - static-lsp:  
            config:  
              name: "lsp-egress-v4"  
            egress:  
              next-hop: 203.0.200.1 
              incoming-label: 1000004  
          - static-lsp:  
            config:  
              name: "lsp-egress-v6"  
            egress:  
              next-hop: 2001:db8:128:200::1  
              incoming-label: 1000006

*  Set resolve NH action for both LSPs.

TODO: OC model does not support resolve next-hop option for LSPs.

7. Configure static routes i.e. IPV4-DST = 203.0.113.0/24 and IPV6-DST = 2001:db8:128:128::/64 to ATE Port 3.

network-instances:
  - network-instance:
    protocols:
      - protocol:
        static-routes:
          - static:
            config:
              prefix: "203.0.113.0/24"
            next-hops:
              - next-hop:
                config:
                  index:  1
                  next-hop: "ATE PORT 3"
          - static:
            config:
              prefix: "2001:db8:128:128::/64"
            next-hops:
              - next-hop:
                config:
                  index:  1
                  next-hop: "ATE PORT 3"

• Push the above DUT configuration.
• Start traffic flow with MPLS[lbl-1000004] and IPv4 destined to IPV4-DST.
• Verify that traffic arrives to ATE Port 2.

• Push the above DUT configuration.
• Start traffic flow with MPLS[lbl-1000006] and IPv4 destined to IPV6-DST.
• Verify that traffic arrives to ATE Port 2.

• Withdraw BGP-NH-V4 advertisement.
• Push the above DUT configuration.
• Start traffic flow with MPLS[lbl-1000004] and IPv4 destination set to IPV4-DST.
• Verify that traffic is discarded.

• Withdraw BGP-NH-V6 advertisement.
• Push the above DUT configuration.
• Start traffic flow with MPLS[lbl-1000006] and IPv6 destination set to IPV6-DST.
• Verify that traffic is discarded.

paths:
  ## Config paths
  /network-instances/network-instance/mpls/lsps/static-lsps/static-lsp/egress/config/incoming-label:
  /network-instances/network-instance/mpls/lsps/static-lsps/static-lsp/egress/config/next-hop:
  /network-instances/network-instance/protocols/protocol/static-routes/static/config/prefix:
  /network-instances/network-instance/protocols/protocol/static-routes/static/next-hops/next-hop/config/next-hop:
  /network-instances/network-instance/protocols/protocol/static-routes/static/next-hops/next-hop/config/index:


rpcs:
  gnmi:
    gNMI.Set:
      union_replace: true
      replace: true
    gNMI.Subscribe:
      on_change: true