Re: Cannot form LDP peer

Hi,

you need to run IGP between the two and advertise mpls ldp router-id into
that.

cheers
J.Daniels

On Mon, Jun 22, 2009 at 2:12 PM, Jerry Chan <temjin1997_at_gmail.com> wrote:

> Hi all expert,
>
> *I am now studying the MPLS, start to do the LDP workbook. (using GNS3)
> however, it cannot form peer with a simple connection between R1--R3 using
> a
> serial link or frame-relay.*
>
> R1. config
> =======
> ip cef
> mpls label protocol ldp
> !
> interface Serial1/3
> ip address 150.1.13.1 255.255.255.0
> mpls ip
> !
>
> R3. config
> =======
> ip cef
> mpls label protocol ldp
> !
> interface Serial1/3
> ip address 150.1.13.3 255.255.255.0
> clock rate 64000
> mpls ip
> !
>
> *it can ping , can form ospf peer, but cannot form ldp peer. Am I do the
> wrong things?
> when i type debug mpls ldp tran even on both R1 and R3, it give me like
> these.*
>
> Rack10R1#
> *Jun 22 16:22:45.203: ldp: Rcvd ldp hello; Serial1/3, from 150.1.13.3 (
> 150.1.13.3:0), intf_id 0, opt 0xC
> *Jun 22 16:22:45.215: ldp: ldp Hello from 150.1.13.3 (150.1.13.3:0) to
> 224.0.0.2, opt 0xC
> *Jun 22 16:22:45.215: ldp: local idb = Serial1/3, holdtime = 15000, peer
> 150.1.13.3 holdtime = 15000
> *Jun 22 16:22:45.219: ldp: Link intvl min cnt = 2, intvl = 5000, idb =
> Serial1/3
> *Jun 22 16:22:45.831: ldp: Send ldp hello; Serial1/3, src/dst
> 150.1.13.1/224.0.0.2, inst_id 0
>
> Rack10R3#
> *Jun 22 16:19:38.887: ldp: Ignore rcvd dir hello to 150.1.13.3 from
> 150.1.12.1, Serial1/3; no dhcb
> *Jun 22 16:19:39.519: ldp: Rcvd ldp hello; Serial1/3, from 150.1.13.1 (
> 150.1.12.1:0), intf_id 0, opt 0xC
> *Jun 22 16:19:39.523: ldp: Send ldp hello; Serial1/3, src/dst
> 150.1.13.3/224.0.0.2, inst_id 0
> *Jun 22 16:19:39.527: ldp: ldp Hello from 150.1.13.1 (150.1.12.1:0) to
> 224.0.0.2, opt 0xC
> *Jun 22 16:19:39.531: ldp: local idb = Serial1/3, holdtime = 15000, peer
> 150.1.13.1 holdtime = 15000
> *Jun 22 16:19:39.531: ldp: Link intvl min cnt = 2, intvl = 5000, idb =
> Serial1/3
> *Jun 22 16:19:39.535: ldp: Opening ldp conn; adj 0x6771C238, 150.1.13.3 <->
> 150.1.12.1; with normal priority
>
> *please kinldy to give me some hits.
>
> Thanks
> *Jerry
>
>
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Received on Tue Jun 23 2009 - 10:41:07 ART