Wireshark-users: Re: [Wireshark-users] Using Wireshark for a DSL "link no surf" problem
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From: Jaap Keuter <jaap.keuter@xxxxxxxxx>
Date: Tue, 17 Jun 2014 23:28:31 +0200
On 06/17/2014 08:42 PM, Kok-Yong Tan wrote:
> Is it possible to use Wireshark to troubleshoot a DSL "link no surf" problem?  The ISP insists it's a CPE issue but the problem only started after their Tier 1 tech monkeyed with the DSLAM and/or the CPE (remotely) in some manner.  I find it suspicious that the problem was intermittent packet loss until they tinkered, whereupon the problem became a "link no surf" issue (i.e., there's Layer 2 connectivity but zero Layer 3 traffic passing). 
> 

Depends on what you can trace in the CPE, as in, how close to the DSL interface.
Otherwise you'll need capture hardware on the DSL....

Good luck,
Jaap