From: Petr Lapukhov (petr@internetworkexpert.com)
Date: Sat Jun 24 2006 - 09:53:34 ART
Paul,
please do not confuse LSAP values with Ethertypes.
They are from different Ethernet frames format :)
Ethertype 0x4242 has nothing to do with LSAP 0x42 :)
Check this link for more details on four ethernet frame types:
http://www.wildpackets.com/support/compendium/ethernet/frame_formats
--
Petr Lapukhov, CCIE #16379
petr@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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2006/6/24, Paul Dardinski <pauld@marshallcomm.com>:
>
> Thanks Peter. The listing shows IEEE STP (4242) as "PCS Basic Block
> Control".....who knew...just need to memorize STP/ARP I hope:-)
>
>
>
>
>
>
>
> _____
>
> From: petrsoft@gmail.com [mailto:petrsoft@gmail.com] On Behalf Of Petr
> Lapukhov
> Sent: Saturday, June 24, 2006 8:38 AM
> To: Paul Dardinski
> Cc: Cisco certification
> Subject: Re: Mac access-list protocol list on Univercd?
>
>
>
> A good reference of Ethertypes:
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hb
> r_r/br_aph.htm
>
> [IOS Bridging Command Reference Appendix]
>
> As for LSAP values, I don't know of a good link in DocCD. I usually use
> this one
> in real life:
>
> http://www.cisco.com/warp/public/473/111_12.html
>
> It's not hard to remember some major ones, notably IEEE STP and SNAP :)
> (PVST+ aka SSTP uses SNAP encapsulation. Go figure ;)
>
> I don't think we need anything else nowdays, though who knows for sure
> ;)
>
> HTH
>
> --
> Petr Lapukhov, CCIE #16379
> petr@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
> 2006/6/24, Paul Dardinski <pauld@marshallcomm.com>:
>
> Does anyone know if there any listing of protocols for use in mac acl's
> anywhere on the univercd? Specifically, ARP/STP, etc? I seem to keep
> tripping up over this as there are many layer 2 protocols that each have
> their own matching id's.
>
>
>
> Thanks,
>
> PD
>
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