Monitoring IP and IPv6 Tunnel Routing Tables

Purpose

Display the current state of the IPv4 or IPv6 tunnel routing table.

Action

To display information about all IP tunnel routes:

host1:vr2# show ip tunnel-route all
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2
  L- MPLS label, V- VRF, *- via indirect next-hop
  Prefix/Length      Type       Next Hop      Dst/Met                  Interface                
------------------ --------- --------------- ---------- ----------------------------------------
200.200.200.1/32   Ldp       111.111.1.1[L18 110/2      ATM5/1.1                                
                             ]                                                                  
                   Rsvp      200.200.200.1[L 110/2      ATM5/1.1                                
                             25]                                                                

To display information about all IPv6 tunnel routes:

host1:pe1:pe11# show ipv6 tunnel-route all
Protocol/Route type codes:
  O- OSPF, E1- external type 1, E2- external type2,
  N1- SSA external type1, N2- NSSA external type2
  L- MPLS label, V- VRF, *- via indirect next-hop
         Prefix/Length             Type     Dst/Met                  Interface                
-------------------------------- --------- ---------- ----------------------------------------
::21.21.21.0/126                 BgpTunnel 200/0      [L20,L26] ATM5/0.10                     
                                 BgpTunnel 200/0      [L20,L34] ATM5/0.10                     
2::2/128                         BgpTunnel 200/0      [L20,L26] ATM5/0.10                     
                                 BgpTunnel 200/0      [L20,L34] ATM5/0.10                     

To display detailed information about all IP tunnel routes beginning with address 200.200.200.1/32:

host1:vr2# show ip tunnel-route 200.200.200.1/32 detail
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2
  L- MPLS label, V- VRF, *- via indirect next-hop
200.200.200.1/32 Type: Ldp Distance: 110 Metric: 2 Tag: 0 Class: 0
  MPLS next-hop: 3, label 18 on ATM5/1.1 (ip19000003.mpls.ip), nbr 111.111.1.1

To display detailed information about all IPv6 tunnel routes beginning with address ::21.21.21.0/126:

host1:pe1:pe11# show ipv6 tunnel-route ::21.21.21.0/126 detail all
Protocol/Route type codes:
  O- OSPF, E1- external type 1, E2- external type2,
  N1- SSA external type1, N2- NSSA external type2
  L- MPLS label, V- VRF, *- via indirect next-hop
::21.21.21.0/126 Type: BgpTunnel Distance: 200 Metric: 0 Class: 0
  MPLS next-hop: 18, label 20, VPN traffic, resolved by MPLS next-hop 13
  MPLS next-hop: 13, resolved by MPLS next-hop 34, peer ::ffff:2.2.2.2
  MPLS next-hop: 34, ECMP next-hop, leg count 2
  MPLS next-hop: 17, resolved by MPLS next-hop 16, peer 2.2.2.2
  MPLS next-hop: 16, primary(in use): label 26 on ATM5/0.10, secondary: resolved by MPLS next-hop 0

Meaning

Table 62 lists the show ip tunnel-route command and show ipv6 tunnel route command output fields.

Table 62: show ip tunnel route and show ipv6 tunnel-route Output Fields

Field Name

Field Description

Prefix

IPv4 or IPv6 address prefix of network destination

Length

Network mask length for prefix

Type

Type of route; protocol

Next Hop

IP address of the next hop to the route, whether it is a local interface or another router; not displayed for IPv6 tunnel routing table

Dst or Distance

Administrative distance for the route

Met or Metric

Number of hops; metric

Interface

Interface type and interface specifier

Tag

Numeric tag that identifies route

Class

Attribute of a route applied only as a result of set route-class clause in a table map

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