08-17-2009 06:59 AM
Here are the two configs.
The OSPF neighbor relationship shows up. A show interfaces serial1/0/0 detail shows:
bottom-7507#show mpls interfaces s1/1/0 det
Interface Serial1/1/0:
IP labeling enabled (ldp):
Interface config
IGP config
LSP Tunnel labeling not enabled
BGP labeling not enabled
MPLS operational
Optimum Switching Vectors:
IP to MPLS Turbo Vector
MPLS Turbo Vector
Fast Switching Vectors:
IP to MPLS Fast Switching Vector
MPLS Turbo Vector
MTU = 1580
any suggestions?
08-17-2009 07:16 AM
check the show mpls ldp interface and check the router id. I think router id not mentioned forcefully and taking it another.
regards
shivlu jain
08-17-2009 07:23 AM
I went ahead and put the router id in both routers. Here is the message i got:
top-7507#show mpls ldp neigh
Peer LDP Ident: 10.0.0.2:0; Local LDP Ident 10.0.0.1:0
TCP connection: 10.0.0.2.15132 - 10.0.0.1.646
State: Oper; Msgs sent/rcvd: 4522/4527; Downstream
Up time: 2d17h
LDP discovery sources:
Serial1/1/0, Src IP addr: 10.0.0.2
Addresses bound to peer LDP Ident:
10.0.0.2 10.255.0.2
There are still no mpls routes being shared as of yet after i cleared the ospf process.
08-17-2009 07:32 AM
please share the outputs of show mpls ldp discovery
regards
shivlu jain
08-17-2009 07:35 AM
Router A:
top-7507#sh mpls ldp disc
Local LDP Identifier:
10.0.0.1:0
Discovery Sources:
Interfaces:
Serial1/1/0 (ldp): xmit/recv
LDP Id: 10.0.0.2:0; no host route
Router B:
bottom-7507#sh mpls ldp disc
Local LDP Identifier:
10.0.0.2:0
Discovery Sources:
Interfaces:
Serial1/1/0 (ldp): xmit/recv
LDP Id: 10.0.0.1:0; no host route
Why does it show no host route?
08-17-2009 11:38 AM
Additionally:
top-7507#sh ip ospf mpls ldp int
Serial1/1/0
Process ID 23532, Area 0
LDP is configured through LDP autoconfig
LDP-IGP Synchronization : Not required
Holddown timer is disabled
Interface is up
It shows the LDP interface is up- but no routes or traffic is going thru.
08-17-2009 10:13 PM
It means thats there is no route exists for your ldp identifier. May be you have not configured your loopback forcefully in the glocal for MPLS LDP router id. Please add the given commands in the both routers and clear the LDP neighborship.
mpls ldp router-id loopback0 force
After that run the ldp discovery command and you will find the positive results.
regards
shivlu jain
08-17-2009 10:32 PM
Hi
You might also need to configure network statment for loopback0 under router ospf.
To be sure loopbacks are in area 0.
08-18-2009 07:00 AM
Here's the logs on the last reboot after the last set of changes- you see that the LDP neighbor relationship AND the MPLS VPN both come up- but it's not passing routes or traffic- not sure why.
When I entered the "mpls ldp router-id loopback0 force " I got: "tag-switching tdp router-id Loopback0 force". Im also noticing that I dont see the "mpls ip" command anywhere in the config- even though it was put in (default?) I feel like there's just a little thing wrong here.
Suggestions? I have the latest config from one of the routers- they are the same on both sides.
*Aug 8 18:08:00 UTC: %PIM-5-DRCHG: VRF VRFB: DR change from neighbor 0.0.0.0 to 10.254.0.2 on interface Loopback1
*Aug 8 18:08:00 UTC: %PIM-5-DRCHG: VRF VRFA: DR change from neighbor 0.0.0.0 to 10.253.0.1 on interface Loopback2
*Aug 8 18:08:11 UTC: %LINK-3-UPDOWN: Interface Serial1/1/0, changed state to up
*Aug 8 18:08:12 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1/0, changed state to up
*Aug 8 18:08:19 UTC: %OSPF-5-ADJCHG: Process 23532, Nbr 10.0.0.2 on Serial1/1/0 from LOADING to FULL, Loading Done
*Aug 8 18:08:27 UTC: %LDP-5-NBRCHG: LDP Neighbor 10.255.0.2:0 (1) is UP
*Aug 8 18:08:34 UTC: %BGP-5-ADJCHANGE: neighbor 10.255.0.2 vpn vrf VRFA Up
08-18-2009 07:29 AM
please configure mpls ip and mpls label protocol ldp in the global mode. mpls ip will not shown not an issue. After that please paste the outputs of show mpls ldp discovery
regards
shivlu jain
08-18-2009 07:31 AM
Already done on both. Requested output:
Local LDP Identifier:
10.255.0.1:0
Discovery Sources:
Interfaces:
Serial1/1/0 (ldp): xmit/recv
LDP Id: 10.255.0.2:0
08-18-2009 07:41 AM
the output is correct. Please let me know whats the problem you are facing now. Are you getting the proper ldp neighbors.
regards
shivlu jain
08-18-2009 07:42 AM
Yes- and as I stated previous- the LDP neighbor relationships and the VRF VPNs show to be up. However, they are not passing routes or traffic.
08-18-2009 07:49 AM
the setup is like the given below
CE---Router-----Router-----CE
In the config files, I have not seen any MP-iBGP config. Please configure it.
After proper configure run the given command
show ip bgp vpnv4 all summary, you will see the number of routes coming from the specific neighbor.
regards
shivlu jain
08-18-2009 07:54 AM
What is the MP-iBGP config? I thought that BGP was used only for eBGP to the CE's and OSPF was used for the IGP.
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