From: Bernard Dunn (dunn@xxxxxxxxx)
Date: Fri Jan 12 2001 - 16:48:05 GMT-3
Michelle,
Pretty much right on. Check out this TAC document on dlsw troubleshooting
if you ever want to get that deeply into the technology:
http://www.cisco.com/warp/public/697/dlswts1.html#contents
there is a link on ethernet on this page..
Really suggest for all studying to use http://www.cisco.com/tac for an
easier time to search on tips. :^) (and not forget about the CD also).
Regards
Bernard.
On Fri, 12 Jan 2001, Michelle T wrote:
> I'll take a shot at these.
>
> 1. Right, as dlsw communicates in non-canonical only i.e. it converts
> ethernet source macs when necessary brings them into the cloud as
> non-canonical and then on the other side at the peer either reverts them
> back to canonical if destination = ethernet or leaves them in non-canonical
> if destination srb/tokenring.
>
> 2.Right. These are static, so you would have to do the conversion if
> ethernet, no matter what is on the other end at the remote peer
>
> 3.Not exactly. You need to bit swap it no matter what assuming there are any
> other kind of hosts on the other end. dlsw assumes non-canonical is the
> format, so if there were an ethernet on the other end, and you did not swap
> it, i.e. you statically addressed it as canonical on your end, the remote
> peer would still assume it was in non-canonical dlsw form and try to revert
> it on the other end. The problem is that it would be reverting it from it's
> CANONICAL form, not the non-canonical.
>
> Michelle
>
> I hope I am starting to get this...But let me know if my assumptions are
> incorrect.
>
> ----- Original Message -----
> From: "Ronnie Royston" <RonnieR@globaldatasys.com>
> To: "'Robert DeVito'" <robertdevito@hotmail.com>; <dunn@cisco.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Friday, January 12, 2001 10:07 AM
> Subject: RE: DLSW Question
>
>
> >
> > I have a few questions,
> >
> > * DLSw peers use non-canonical between each other even if ethernet to
> > ethernet, right?
> >
> > * The conversion does not convert configuration parameters such as
> > 'icanreach mac' statements, right?
> >
> > * The only time you need to bit swap your icanreach is when configuring it
> > on an ethernet router ONLY when there is a token ring on the other peer,
> > right?
> >
> > Thanks.
> >
> >
> > -----Original Message-----
> > From: Robert DeVito [mailto:robertdevito@hotmail.com]
> > Sent: Friday, January 12, 2001 7:25 AM
> > To: dunn@cisco.com
> > Cc: ccielab@groupstudy.com
> > Subject: Re: DLSW Question
> >
> >
> > Would it be a safe question to ask the proctor if the icanreach MAC
> address
> > is bit swapped already?
> >
> >
> > ----Original Message Follows----
> > From: Bernard Dunn <dunn@cisco.com>
> > To: Robert DeVito <robertdevito@hotmail.com>
> > CC: ccielab@groupstudy.com
> > Subject: Re: DLSW Question
> > Date: Fri, 12 Jan 2001 19:32:06 +1100 (EST)
> >
> >
> > yes. Verify it on R2 with 'show dlsw reach'.
> >
> > On Fri, 12 Jan 2001, Robert DeVito wrote:
> >
> > > I have a very easy DLSW question:
> > >
> > > On R1, tell R2 that you can reach host with a MAC address of
> > 00a0-cc24-67b3
> > >
> > > R1 is a ethernet and r2 is a token ring.
> > >
> > > using the icanreach command on R1, I would have to bit swap the mac
> > address
> > > because it is a ethernet node talking to token ring node, correct?
> > >
> > > Thank you,
> > > Robert DeVito
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