[c-nsp] Mpls Troubleshooting Question

[Rocker Feller]

Hi,

My full scenario

CE1 -------> PE1 -----------> PE2 -------------> CEZ

On the PE1 interface I have a tunnel to CEZ .

nb: PE2 is not mpls enabled.

CEZ has a ptp link to PE2

LSP - tunnel is up from  PE1---> CEZ and I can reach the CEZ router via the
tunnel ptp.

        - from the CEZ lan CE1 lan is reacheable.

It is only from the CE1 router  and from the PE1 that I cannot reach CEZ
lan.

Please note this customer has 6 other branches which are working well.

Thanks



On Tue, Feb 24, 2009 at 1:11 AM, schilling <schilling2006 at gmail.com> wrote:

> check no ip unreachable on the PE interface? I got bite once.
>
> verify the LSP?
>
> Ivan's blog for rescue :-)
>
> http://wiki.nil.com/PE-to-PE_troubleshooting_in_MPLS_VPN_networks
>
>
> Schilling
>
> On Mon, Feb 23, 2009 at 4:51 PM, Rocker Feller <
> rocker.rockerfeller at gmail.com> wrote:
>
>> Hi,
>>
>> I work in an ISP environment and in it I found developed MPLS delivering
>> ip
>> vpns.
>>
>> There is one client with 5 branches.
>>
>> All work fine except for 1.
>>
>> This is the scenario.
>>
>> The default route is derived from the corporate office (HQ). Its network
>> range is 172.16.0.0/16
>>
>> Say branch with problem is branch Z ip range is 172.16.7.0/24
>>
>> >From Z Lan I can ping HQ Lan ok
>>
>> ping 172.16.1.1 source 172.16.7.1
>>
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
>> Packet sent with a source address of 172.16.7.1
>> !!!!!
>> Success rate is 100 percent (5/5), round-trip min/avg/max = 24/29/36 ms
>>
>> >From HQ I cannot ping Z apart from reaching the Z router.the lan
>>
>> ping 172.16.7.1
>> PING 172.16.7.1 (172.16.7.1) 56(84) bytes of data.
>> 64 bytes from 172.16.7.1: icmp_seq=0 ttl=253 time=19.8 ms
>>
>> Any other connections are dropped from branch Z router
>>
>> A trace reveals packets are dropped from the main MPLS PE router.
>>
>> The PE router can reach the CE router but not any pc behind it.
>>
>>
>> Your input appreciated
>>
>>
>> Regards
>> Rocker
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>
>