Cisco Catalyst SD-WAN Routing Configuration Guide, Releases 26.x and Later

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Cisco Catalyst SD-WAN Routing Configuration Guide, Releases 26.x and Later

Verify route-leaking configurations between service VPNs using the CLI

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Explains how to confirm that routes are being correctly leaked and redistributed between service VPNs. By using specific show commands, you can inspect the routing and Cisco Express Forwarding tables to ensure path symmetry and successful route replication.


Use this task to verify that routes are being leaked and redistributed correctly between service VPNs on your Cisco IOS XE Catalyst SD-WAN device using the CLI.

Before you begin

Ensure your Cisco IOS XE Catalyst SD-WAN device is running Cisco IOS XE Catalyst SD-WAN Release 17.9.1a or later.

Follow these steps to verify route-leaking configurations between service VPNs:

Procedure

  1. View routes replicated for redistribution to a service VRF.

    Device# show ip route vrf 2
    Routing Table: 2
    Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
           D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
           N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
           E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP
           n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
           i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
           ia - IS-IS inter area, * - candidate default, U - per-user static route
           H - NHRP, G - NHRP registered, g - NHRP registration summary
           o - ODR, P - periodic downloaded static route, l - LISP
           a - application route
           + - replicated route, % - next hop override, p - overrides from PfR
           & - replicated local route overrides by connected
    
    Gateway of last resort is not set
    
          10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
    S   +    10.10.10.97/32 [1/0] via 10.20.1.2 (1)
    C        10.20.2.0/24 is directly connected, GigabitEthernet5
    L        10.20.2.1/32 is directly connected, GigabitEthernet5
  2. View replicated routes in the Cisco Express Forwarding (CEF) table for specific replicated routes.

    Device# show ip cef vrf 2 10.10.10.97 internal
    10.10.10.97/32, epoch 0, RIB[S], refcnt 6, per-destination sharing
      sources: RIB 
      feature space:
        IPRM: 0x00048000
        Broker: linked, distributed at 3rd priority
      subblocks:
        Replicated from VRF 1
      ifnums:
        GigabitEthernet3(9): 10.20.1.2
      path list 7F890C8E2F20, 7 locks, per-destination, flags 0x69 [shble, rif, rcrsv, hwcn]
        path 7F890FB18F08, share 1/1, type recursive, for IPv4
          recursive via 10.20.1.2[IPv4:1], fib 7F890B609578, 1 terminal fib, v4:1:10.20.1.2/32
          path list 7F890C8E3148, 2 locks, per-destination, flags 0x49 [shble, rif, hwcn]
              path 7F890FB19178, share 1/1, type adjacency prefix, for IPv4
                attached to GigabitEthernet3, IP adj out of GigabitEthernet3, addr 10.20.1.2 7F890FAE4CD8
      output chain:
        IP adj out of GigabitEthernet3, addr 10.20.1.2 7F890FAE4CD8

You have successfully verified that routes are being leaked and redistributed between service VPNs as configured. The presence of + in the routing table and Replicated from VRF in the CEF output confirms the successful operation.