From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Tue Sep 27 2005 - 21:20:44 GMT-3
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 138.10.70.7 255.255.255.0
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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