[c-nsp] mpls bgp forwarding ?

[Darryl Dunkin]

Do you have the VRF configured in your eBGP router?

If not, add this to your BGP configuration to keep it from filtering
those out:
no bgp default route-target filter

The prefixes will be filtered out if there is no local VRF to import to.

Some more details on this setup:
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_configuration_e
xample09186a0080094472.shtml

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of kevin gannon
Sent: Tuesday, March 03, 2009 12:25
To: cisco-nsp
Subject: [c-nsp] mpls bgp forwarding ?

Having a strange problem with IPv4 and send-label. The topology is the
below. I originate 100.100.100.16
from AS16 and it reaches AS19.

R16-------eBGP+send-label----------R17-------IGP
BGP+send-label-----R18---------eBGP send-label--------R19
AS16
AS17
AS17                                              AS19
100.100.100.16



On R18 I see the label installed for 100.100.100.16

R18#show mpls for
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop
Label  Label or VC   or Tunnel Id      Switched      interface
16     Pop Label     189.189.189.9/32  0             Fa1/1
189.189.189.9
17     Pop Label     100.100.100.17/32 0             Fa1/0
178.178.178.7
18     20            100.100.100.16/32 0             Fa1/0
178.178.178.7
19     Pop Label     100.100.100.19/32 0             Fa1/1
189.189.189.9


show ip bgp 100.100.100.16
BGP routing table entry for 100.100.100.16/32, version 2
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Advertised to update-groups:
     2
  16
    100.100.100.17 (metric 2) from 100.100.100.17 (100.100.100.17)
      Origin IGP, metric 0, localpref 100, valid, internal, best,
      mpls labels in/out 18/20
R18(config)#


However on R19 I receive the label via eBGP. However I do not install
into
the
MPLS forwarding table but I do not know why ??

R19#show ip bgp 100.100.100.16
BGP routing table entry for 100.100.100.16/32, version 7
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Not advertised to any peer
  17 16
    189.189.189.8 from 189.189.189.8 (100.100.100.18)
      Origin IGP, localpref 100, valid, external, best,
      mpls labels in/out nolabel/18


R19#
R19#show mpls for
Local  Outgoing      Prefix            Bytes Label   Outgoing   Next Hop
Label  Label or VC   or Tunnel Id      Switched      interface
16     Pop Label     189.189.189.8/32  0             Fa1/0
189.189.189.8
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