> Subject: Re: conf-reg challenge
>
> Groupstudy,
>
> I received a few responses to the challenge. Most of you
probably thought you knew it and passed it by.
> Surprise. The answer is D, not A as every person who e-mailed
me guessed. I should note that a few people did recognize that
there was a trick, but still guessed A.
>
> Here's the scoop. conf-reg expects a hex value. In the
question below, I assigned a decimal value. 2102=0x836. So, in
essence, I actually ran the command:
>
> router(config)#config-register 0x836
Actually, the correct answer is "it depends" :-)
One of the quirky things about the IOS that you have to get used
to, is how things change over time. What is a problem in one
version of IOS, later gets fixed in another version of IOS. In
earlier versions of code, there was a definite problem
(converting a decimal value to an expected hex value). Cisco
modified the command line parser somewhere around the tail end
of 11.3 or 12.x code to remove that quirky little feature.
Here is an output from a Cisco 804 running 12.03T1 code:
cisco804(config)#config-register ?
<0x0-0xFFFFFFFF> Config register number
cisco804(config)#config-register 2102
^
% Invalid input detected at '^' marker.
HTH,
Paul Werner
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