ADSL Breakthrough with a slice of humble pie.

Posted on March 10th, 2007 by grinthock.
Categories: Cisco Sucks Department, Murphys Law Department.

So after writing my previous note and thrashing Cisco, as many people do on a constant basis, I started researching — AGAIN. I was specifically told this card can do 8MB down, and was told by a Cisco person I know, and she knows her shiat!

I was able to find out that depending on the IOS version of your router — the default clockrate for the ATM interface associated with the ADSL wic is actully 2500 (sounds familiar) so I went in and swapped it — and now the new ADSL card is giving me numbers like this

I guess a bit of murphy’s law is at play here, as soon as I finally give up and write my article the problems get’s fixed. For the purposes of google, the command to fix it was “clock rate aal5 8000000″

So of course me being even more stubborn and wanting to tell myself I was not blaming this hardware completly in vain, I put the old card back in, the one with the known distance problem to see if that card will operate correctly.

So I guess this is me taking a big bite of humble pie, but it all started harmless enough – however — why in gods name would the default command for clock rate be so low — I mean it auto negotiates it anyway, it’s kind of like putting a brick under your accelerator pedal in the car, there’s just no reason to do it.

Oh well — now i’ve completly wasted my time – well not really, I learned a lot about ADSL troubleshooting from a very low level, and i’m definatly geared with the knowledge to troubleshooting line related issues in the future, so it’s not a total loss, however at the end of the day i’m glad Cisco’s gear was able to step up to the plate and prove itself…

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