â– When it is received from other type of peers, the indirect next hop is
reachable if an entry exists in the IP routing table that resolves this
indirect next-hop address.
For VPN labeled routes in a VRF, the following rules apply:
â– When it is received in a core VRF from a remote multihop IBGP or EBGP
VPN peer, the indirect next hop is reachable if an entry exists in the IP
tunnel routing table that resolves the next-hop address.
â– When it is received in a core VRF from a nonmultihop peer, the indirect
next hop is reachable if the MPLS major interface next to the peer IP
interface exists and is operationally up.
■Metric—Metric of the BGP indirect next hop
■Number of direct next-hops—Number of the equal-cost legs of direct next
hops that this indirect next hop resolves to
■Direct next-hop—IP interface and next-hop IP address that resolve the BGP
indirect next hop; the direct next hop can also be an IP indirect next hop or
an MPLS indirect next hop when chains of next hops are in use
■Reference count—Number of label mappings of BGP routes that use this
next hop
â– Examples
host1:pe2#show ip bgp vpnv4 all next-hops
Indirect next-hop 10.1.1.1
Resolution in IP route table of VR
IP indirect next-hop index 10
Reachable (metric 3)
Number of direct next-hops is 1
Direct next-hop ATM4/1.20 (10.20.20.1)
Resolution in IP tunnel-route table of VR
MPLS indirect next-hop index 17
Reachable (metric 3)
Number of direct next-hops is 1
Direct next-hop: MPLS next-hop 18
Reference count is 1
Indirect next-hop 10.21.21.2
Resolution in IP route table of VR
IP indirect next-hop index 5
Reachable (metric 0)
Number of direct next-hops is 1
Direct next-hop ATM4/0.21 (10.21.21.2)
Resolution in IP tunnel-route table of VR
MPLS indirect next-hop index 14
Reachable (metric 0)
Number of direct next-hops is 1
Direct next-hop ATM4/0.21.mpls
Reference count is 3
host1:pe2#show ip bgp vpnv4 vrf pe22 next-hops
Indirect next-hop 10.61.61.2
Resolution in IP route table of VRF pe22
IP indirect next-hop index 3
Monitoring BGP/MPLS VPNs â– 489
Chapter 5: Configuring BGP-MPLS Applications