From: Jonathan V Hays (jhays@jtan.com)
Date: Tue Jul 15 2003 - 08:51:43 GMT-3
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of Rob Laidlaw
> Sent: Monday, July 14, 2003 10:40 PM
> To: Biondino, Joseph; ccielab@groupstudy.com
> Subject: RE: Ethernet-to-Ethernet DLSW ICANREACH
>
>
> http://www.cisco.com/warp/public/697/5.html
[snip]
> In the example below, both sides are ethernet, so no
> bitswapping is needed.
> Bit swapping is only needed to allow ethernet to go to
> tokenring. For token
> ring to go to ethernet you needed SR/TLB.
Read the previous sentence in bullet three: "DLSw can not be used to
make connections from a LOCAL Token Ring to local Ethernet devices." We
are not concerned here with local TR-to-ethernet connections (which will
not show up in the CCIE lab) but with DLSW.
And I speculate that it is quite possible Cisco could ask you something
like
"Configure r4 so that explorers are not sent for mac address
1111.2222.3333."
Well, you could go to the proctor and ask whether the mac address is for
an ethernet or TR workstation; or whether it is canonical or
non-canonical; or whether there is an ethernet or TR workstation on the
other end; or anything else you might think is relevant; but you might
not get a definitive answer. The one thing the proctor will probably NOT
do is tell you whether or not to bit-swap the octets.
It sure would be nice to have this all figured out beforehand, eh?
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