ethertypes on doccd?

hi all,

I searched the archives for a link to the doccd that will show me the
different ethertypes for protocols like: pvst(+), mst, ipx and ipv6. I know
ip and ip arp without any references.
Is there a way to issue a debug command to find out the ethertype values of
a particular protocol? I want to avoid learning hex numbers and forget about
them eventually. :)

Tnx.

--
Wouter Prins
Blogs and organic groups at http://www.ccie.net