Re: Cannot form LDP peer

Hi Ernest,

i will try it soon, but what is the reason to force it to modify the
router-id? is that not only a idenidifier?

THanks,
Jerry

2009/6/22 Ernest Wambari <ewambari_at_gmail.com>

> Hi Jerry,
>
> Try hard-coding the mpls router id's on both ends using the:"mpls ldp
> router-id <int> force".
>
> Would be a good idea to setup loopback interfaces on R1 and R3 for this.
>
> Be sure to use the force switch or disable and enable ldp on each serial
> interface after the change.
>
> HTH,
>
> W.
>
>
> On Mon, Jun 22, 2009 at 7:30 PM, Jerry Chan <temjin1997_at_gmail.com> wrote:
>
>> Hi Ernest,
>>
>> thanks for your reply,
>> i cannot see anything on R3 when i type "sh mpls ldp nei"
>> and i only can see the peer on R1 with R2.
>>
>> Thanks,
>> Jerry Chan
>>
>> 2009/6/22 Ernest Wambari <ewambari_at_gmail.com>
>>
>> Hi Jerry,
>>>
>>> Check your mpls ldp router-ids.
>>>
>>> Use the "sh mpls ldp nei" to see if R1 and R3 are peering via the
>>> expected interfaces.
>>>
>>> As Joe mentioned,looks like they are not.
>>>
>>> Regards,
>>>
>>> W.
>>>
>>> On Mon, Jun 22, 2009 at 6:42 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 Mon Jun 22 2009 - 17:45:05 ART