From: Niche (jackyliu419@gmail.com)
Date: Tue Sep 27 2005 - 22:05:26 GMT-3
Hi Guys,
Just wanna share,
http://www.cisco.com/warp/public/697/dlswts8.html
There is a nice small conversion table in this article, and you can get the
result in 2 steps.
Coversion then,
do the bit swapping -
In each octet:
Swap the 2nd bit with the 1st bit and do the same with the 3rd and 4th bit.
Cheers~
Jacky
On 9/28/05, John Matus <John.Matus@tokiom.com> wrote:
>
> dave, i would never place a wager on those odds. if you plan to take the
> exam b4 january, be sure to know it. that's my 2 cents.
>
>
> Regards,
>
> John D. Matus
> Technical Support / PAS
> Fujitsu Consulting
> 626-568-7716
> John.Matus@tokiom.com
>
>
>
> "Schulz, Dave"
> <DSchulz@dpscienc
> es.com <http://es.com>> To
> Sent by: <ronald.kaduwa@bell.ca>,
> nobody@groupstudy <nobody@groupstudy.com>,
> .com <ccielab@groupstudy.com>
> cc
>
> 09/27/2005 05:20 Subject
> PM RE: IOS canonical to canonical MAC
> conversion.
>
> Please respond to
> "Schulz, Dave"
> <DSchulz@dpscienc
> es.com <http://es.com>>
>
>
>
>
>
>
> Since dlsw is going to be dropped from lab in January (I think).... is
> there
> maybe a higher chance that this won't show up?
>
> Dave
>
> -----Original Message-----
> From: nobody@groupstudy.com
> To: ccielab@groupstudy.com
> Sent: 9/27/2005 12:11 PM
> Subject: RE: IOS canonical to canonical MAC conversion.
>
> It's good to know, but seems like more work is involved with this method
> especially if time is of the essence on that day!
>
> Roni.
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Bhuiyan Muhaimeen
> Sent: Tuesday, September 27, 2005 5:06 AM
> To: ccielab@groupstudy.com
> Subject: IOS canonical to canonical MAC conversion.
>
> Hi Team,
>
> Just wanted to share something that I came upondont know if every body
> is aware of thisbut looks like IOS has a built in bit swapping tool for
> converting canonical to non-canonical..
>
> Heres how it goessay for a dlsw icanreach address you need to find the
> non-canonical of the following two MAC addresses:
>
> 4000.4000.4000
> And
> 4000.4000.4001
>
> Instead of the tedious bit swapping and binaries, let the router do
> it..heres how:
>
> 1. turn on dlsw transparent switch support globally(you need to do this
> before bridge group stuff as they are not compatible with each other)
>
> R7(config)#dlsw transparent switch-support
>
> 2. Enable a multicast MAC under the Ethernet
>
> R7(config)#int e0/0
> R7(config-if)#dlsw transparent redundancy-enable 0100.5e12.2342
> <<<Multicast MAC (use whatever you like)
>
> 3. Under the transparent MAP config, use the MAC address you want to
> convert:
>
> R7(config-if)#dlsw transparent map local-mac 4000.4000.4000 remote-mac
> 4000.4000.4001
> R7(config-if)#end
>
> 4. Do a 'show dlsw transparent map', you get the non-canonical MAC:
>
> R7#sh dlsw transparent map
>
> Interface Et0/0
> LOCAL Mac REMOTE MAC BACKUP
> --------- ---------- ------
> 0200.0200.0200 0200.0200.0280 STATIC
>
> 5.Turn off the transparent switch support globally and then on the
> interface (you need to do that to configure the bridge group stuff)
> R7#ct
> Enter configuration commands, one per line. End with CNTL/Z.
> R7(config)#no dlsw transparent switch-support
> R7(config)#end
> R7#sh run int e0/0
> Building configuration...
>
> Current configuration : 152 bytes
> !
> interface Ethernet0/0
> ip address 138.10.70.7 <http://138.10.70.7>
255.255.255.0<http://255.255.255.0>
> dlsw transparent redundancy-enable 0100.5e12.2342
> end
>
> R7#ct
> Enter configuration commands, one per line. End with CNTL/Z.
> R7(config)#int e0/0
> R7(config-if)#no dlsw transparent redundancy-enable 0100.5e12.2342
> R7(config-if)#exit
>
> HTH,
>
> -Bhuiyan
>
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