From: TinLink (tinlink@swbell.net)
Date: Thu Feb 06 2003 - 00:58:59 GMT-3
Hello........ I'm new to the list (not new to Groupstudy by any means,
but new on the CCIE list), so I had to throw in my 2 cents......
It seems to me that trying to memorize a chart for bitswapping is as
difficult as just doing the bitswapping. Admittedly, the results are
the same, as I found after I did a few bitswaps in my paper, it got to
where it was natural to do them in my head. Similar to all of the
charts and tricks people use for subnetting. It seems sometimes people
put more effort into the "quick" way than just learning and doing the
binary.
Mike W.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Cezar Fistik
Sent: Wednesday, February 05, 2003 8:40 PM
To: ccielab@groupstudy.com
Subject: Re: Re: Bit swap?
Hi all,
The question was if the bit swap is correct, so I just want to say that
it is not corect:
1234.abcd.0000 swapped is 482C.D5B3.0000 not 242C.D563.0000
You can always check yourself here:
http://www.cisco.com/cgi-bin/Support/Bitswap/bitswap.pl (req. CCO)
And who said that we are not allowed to use windows calc on the lab?
Cezar Fistik.
---------Jerry wrote:
>Hey nice catch Pete. They are truly binary palindromes. But I guess
>we'll have to give Jay a pass this
>
>time -- he's probably still a little burned-out from passing the
lab!
>
>
>Jerry
>----- Original Message -----
>From: Peter <peter@cyscoexpert.com>
>To: <ccielab@groupstudy.com>
>Sent: Wednesday, February 05, 2003 4:51 PM
>Subject: Re: Bit swap?
>
>
>> I do not agree with the chart.
>> 6 is 6, not 9
>> 9 is 9, not 6
>>
>> My 2 cents for those who want to use the chart.
>>
>> _____________________________
>> #7247 (R&S, Security)
>> CyscoExpert Corp.
>> 4433 W. Touhy Ave. Suite 410
>> Lincolnwood, IL 60712
>> Phone (847) 674-3392
>> Toll Free (866) CyscoXP (297-2697)
>> Fax (847) 674-2625
>>
>>
>> ----- Original Message -----
>> From: "Jay Greenberg" <groupstudylist@execulink.com>
>> To: "Joe Chang" <changjoe@earthlink.net>
>> Cc: <ccielab@groupstudy.com>
>> Sent: Wednesday, February 05, 2003 1:57 PM
>> Subject: Re: Bit swap?
>>
>>
>> > You don't need to go down to binary, just remember the chart below.
>> > Once you memorize it, you'll be able to bitswap in your head:
>> >
>> > 2323.ABCD.EF12
>> > use the chart to get:
>> > 4C4C.5D3B.7F84
>> > then swap every two digits
>> > C4C4.D5B3.F748
>> >
>> > 0 0
>> > 1 8
>> > 2 4
>> > 3 C
>> > 4 2
>> > 5 A
>> > 6 9
>> > 7 E
>> > 8 1
>> > 9 6
>> > A 5
>> > B D
>> > C 3
>> > D B
>> > E 7
>> > F F
>> >
>> > Jay Greenberg, CCIE #11021
>> >
>> > On Tue, 2003-02-04 at 13:47, Joe Chang wrote:
>> > > Did I do the following bit swap correctly?
>> > >
>> > >
>> > > 1234 abcd 0000
>> > >
>> > > is
>> > >
>> > > 00010010 00110100 10101011 11001101
>> > >
>> > > swapped:
>> > >
>> > > 01001000 00101100 11010101 10110011
>> > >
>> > > is
>> > >
>> > > 242C D563 0000
>> > > .
>> > .
>> .
>..
.
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