[j-nsp] L3VPN routes seem unresolvable
C. Hagel
nanog at lordkron.net
Sun May 1 12:31:46 EDT 2005
Could you send in a copy of your configs as well as a "show route" from
a CE device?
On Sun, 01 May 2005 00:24:04 -0400
Jeff S Wheeler <jsw at inconcepts.biz> wrote:
JSW> Dear list,
JSW>
JSW> I am having a great deal of trouble with L3VPN configured per Juniper
JSW> examples in a simple topology. JUNOS is 7.2R1.7 with no E-FPCs
JSW> available.
JSW>
JSW> In particular, I can find no documentation to shed light on the
JSW> `Indirect next-hop: 2 no-forward` condition reported on my VPN routes.
JSW> I would expect the routes to be hidden in this condition, but in fact
JSW> they are active and installed into the PFE as discard routes. I presume
JSW> the discard next-hop is being installed because a valid next-hop cannot
JSW> be computed by rpd.
JSW>
JSW> In the below `show route ...` output, a default route is advertised by
JSW> PE1 to PE2. VPN label information seems to be correctly signalled, and
JSW> a route to PE1's loopback interface is present in PE2's inet.3 table.
JSW> PE1 is connected directly to PE2 via ATM (at-2/2/0.33 on PE1 to
JSW> at-0/3/0.33 on PE2); PE1's lo0.0 is numbered 1.2.3.4, PE2 1.2.3.5, for
JSW> the purposes of the below example output.
JSW>
JSW> Any suggestions would be appreciated.
JSW>
JSW> Kind regards,
JSW> --
JSW> Jeff Wheeler <jsw at inconcepts.biz>
JSW>
JSW> pe2>
JSW> inet.3: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
JSW> Restart Complete
JSW> 1.2.3.4/32 (1 entry, 1 announced)
JSW> State: <FlashAll>
JSW> *RSVP Preference: 7
JSW> Next-hop reference count: 33
JSW> Next hop: via at-0/3/0.33 weight 1, selected
JSW> Label-switched-path pe2-pe1
JSW> State: <Active Int>
JSW> Local AS: 55555
JSW> Age: 2:55:48 Metric: 11
JSW> Task: RSVP
JSW> Announcement bits (2): 2-Resolve tree 1 3-Resolve tree
JSW> 2
JSW> AS path: I
JSW>
JSW> bgp.l3vpn.0: 25 destinations, 25 routes (25 active, 0 holddown, 0
JSW> hidden)
JSW> Restart Complete
JSW> 1.2.3.4:999:0.0.0.0/0 (1 entry, 0 announced)
JSW> *BGP Preference: 170/-101
JSW> Route Distinguisher: 1.2.3.4:999
JSW> Next-hop reference count: 7
JSW> Source: 1.2.3.4
JSW> Protocol next hop: 1.2.3.4
JSW> Push 100256
JSW> Indirect next hop: 2 no-forward
JSW> State: <Active Int Ext>
JSW> Local AS: 55555 Peer AS: 55555
JSW> Age: 5:36:38 Metric2: 11
JSW> Task: BGP_55555.1.2.3.4+179
JSW> AS path: I
JSW> Communities: 55555:19 target:999:0
JSW> VPN Label: 100256
JSW> Localpref: 100
JSW> Router ID: 1.2.3.4
JSW> Secondary Tables: vpna.inet.0
JSW> Indirect next hops: 1
JSW> Protocol next hop: 1.2.3.4 Metric: 11
JSW> Push 100256
JSW> Indirect next hop: 2 no-forward
JSW> Indirect path forwarding next hops: 1
JSW> Next hop: via at-0/3/0.33 weight 1
JSW> 1.2.3.4/32 Originating RIB: inet.3
JSW> Metric: 11 Node path
JSW> count: 1
JSW> Forwarding nexthops: 1
JSW> Nexthop: via at-0/3/0.33
JSW>
JSW> vpna.inet.0: 34 destinations, 34 routes (34 active, 0 holddown, 0
JSW> hidden)
JSW> Restart Complete
JSW> 0.0.0.0/0 (1 entry, 1 announced)
JSW> TSI:
JSW> KRT in-kernel 0.0.0.0/0 -> {indirect(no-forward)}
JSW> *BGP Preference: 170/-101
JSW> Route Distinguisher: 1.2.3.4:999
JSW> Next-hop reference count: 7
JSW> Source: 1.2.3.4
JSW> Protocol next hop: 1.2.3.4
JSW> Push 100256
JSW> Indirect next hop: 2 no-forward
JSW> State: <Secondary Active Int Ext>
JSW> Local AS: 55555 Peer AS: 55555
JSW> Age: 1:21:01 Metric2: 11
JSW> Task: BGP_55555.1.2.3.4+179
JSW> Announcement bits (1): 0-KRT
JSW> AS path: I
JSW> Communities: 55555:19 target:999:0
JSW> VPN Label: 100256
JSW> Localpref: 100
JSW> Router ID: 1.2.3.4
JSW> Primary Routing Table bgp.l3vpn.0
JSW>
JSW> pe1> show route advertising-protocol bgp 1.2.3.5 table vpna.inet.0
JSW> 0.0.0.0/0 exact extensive
JSW>
JSW> vpna.inet.0: 74 destinations, 77 routes (73 active, 0 holddown, 1
JSW> hidden)
JSW> Restart Complete
JSW> * 0.0.0.0/0 (1 entry, 1 announced)
JSW> BGP group iBGP type Internal
JSW> Route Distinguisher: 1.2.3.4:999
JSW> VPN Label: 100256
JSW> Nexthop: Self
JSW> Localpref: 100
JSW> AS path: I
JSW> Communities: 55555:19 target:999:0
JSW>
JSW>
JSW>
JSW> _______________________________________________
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JSW> http://puck.nether.net/mailman/listinfo/juniper-nsp
--
C. Hagel <nanog at lordkron.net>
JNCIP #103
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