mpls ldp session not forming-Isis

Latest reply: Feb 28, 2014 19:22:28 2253 5 0 0

Hi Guys,

Please help me to Form ldp session between the 9706 & 5700 Branch2..



BX1-HITE#di mpls ldp lsp
 LDP LSP Information
 DestAddress/Mask   In/OutLabel    UpstreamPeer    NextHop         OutInterface
 -------------------------------------------------------------------------------      NULL/3         -         Vlanif22      1025/3    Vlanif22      3/NULL       InLoop0
*      Liberal/1025                   DS/
*     Liberal/3                      DS/

BX2-CHND#di mpls ldp ses ver

 LDP Session(s) in Public Network
 Peer LDP ID     :       Local LDP ID   :
 TCP Connection  : Not established
 Session State   : NonExistent        Session Role   : Active
 Session FT Flag : Off                MD5 Flag       : Off
 Reconnect Timer : ---                Recovery Timer : ---
 Keychain Name   : ---

 Negotiated Keepalive Hold Timer   : 0 Sec
 Configured Keepalive Send Timer   : ---
 Keepalive Message Sent/Rcvd       : 0/0 (Message Count)
 Label Advertisement Mode          : Un Available
 Label Resource Status(Peer/Local) : Available/Available
 Session Age                       : ---
 Session Deletion Status           : No

   Capability-Announcement         : Off

 Outbound&Inbound Policies applied : NULL

 Addresses received from peer: (Count: 0)
                     No address received.

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Created Feb 25, 2014 17:57:46 Helpful(0) Helpful(0)

Hi Kumar,


The configs you supplied have an IP addressing error.


On VLAN23 in the 9706 you have an IP address of but on the Branch 2 5700 you have an IP address of I think you have made an error on the 3rd octet, both should be either 114 or 144!


Regards Nigel


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Created Feb 26, 2014 07:16:36 Helpful(0) Helpful(0)

Reply 2 #

Hi Nigel,

Even that didnt sorted out the issue, any suggestions on modifications of ISIS, please.


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Created Feb 26, 2014 16:40:59 Helpful(0) Helpful(0)

Hi Kumar,


I tested your configs on eNSP as I do not have access to the necessary hardware, however with the addresses corrected for me it brought up both ISIS and LDP sessions so I'm not quite sure what else to suggest other than to confirm L2 and L3 connectivity first.


Regards Nigel

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Created Feb 26, 2014 16:57:44 Helpful(0) Helpful(0)

hi Nigel,

If possible can you send me the worked in ensp topo for me, so that i will work on the diffrences; please.



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Created Feb 28, 2014 19:22:28 Helpful(0) Helpful(0)

Sorry Kumar I did not bother saving the topo file, however it was very straightforward:


I used 3 S5700, 1 was acting as the core S9700 and I just directly connected them togethr and basically pasted your configs into them.


Regards Nigel


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