Cannot form LDP peer

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 Mon Jun 22 2009 - 16:42:34 ART