Ran into an interesting situation with inter-provider VPNs.
When setting up the ASBR peering, I got the BGP setup before adding family mpls to the interface. And when I checked IBGP advertisements, I got this:
lab@R3> show route advertising-protocol bgp 172.27.255.1
inet.0: 22 destinations, 22 routes (22 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
* 95.100.255.2/32 Self 1 100 60001 I
inet.3: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
* 95.100.255.2/32 Not advertised 1 100 60001 I
Uh Oh… “Not Advertised”… Let’s check to see what’s up.
lab@R3> show route advertising-protocol bgp 172.27.255.1 extensive
inet.3: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
* 95.100.255.2/32 (1 entry, 1 announced)
BGP group internal type Internal
BGP label allocation failure: family mpls not enabled on interface
Nexthop: Not advertised
Flags: Nexthop Change
MED: 1
Localpref: 100
AS path: [3895077211] 60001 I
Hmmmm… That’s strange. I thought I enabled it…
[edit interfaces ge-0/0/4]
lab@R3# show
description "Connection to P-1";
unit 0 {
family inet {
address 172.27.0.57/30;
}
family mpls;
}
Yeah… there it is. What if I try to clear soft-in?
lab@R3> clear bgp neighbor 172.27.0.58 soft-inbound
inet.3: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
* 95.100.255.2/32 (1 entry, 1 announced)
BGP group internal type Internal
BGP label allocation failure: family mpls not enabled on interface
Nexthop: Not advertised
Flags: Nexthop Change
MED: 1
Localpref: 100
AS path: [3895077211] 60001 I
Nope… no go. Looks like we get to wait 30+ seconds. :)
lab@R3> clear bgp neighbor 172.27.0.58
Cleared 1 connections
Now to go get some coffee…
lab@R3> show route advertising-protocol bgp 172.27.255.1 extensive
inet.0: 22 destinations, 22 routes (22 active, 0 holddown, 0 hidden)
* 95.100.255.2/32 (1 entry, 1 announced)
BGP group internal type Internal
Nexthop: Self
Flags: Nexthop Change
MED: 1
Localpref: 100
AS path: [3895077211] 60001 I
inet.3: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
* 95.100.255.2/32 (1 entry, 1 announced)
BGP group internal type Internal
Route Label: 299952
Nexthop: Self
Flags: Nexthop Change
MED: 1
Localpref: 100
AS path: [3895077211] 60001 I
That looks much better!