Article View: comp.dcom.lans.fddi
Article #15Re: bridging source routed 802.5 across fddi/ethernet?
From: Thomas Ruf
Date: Tue, 03 Nov 1992 09:50
Date: Tue, 03 Nov 1992 09:50
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vjs@rhyolite.wpd.sgi.com (Vernon Schryver) writes:
>There is "support" and then there is also "support." Some old versions
>of some documents from the ANSI X3T9.5 committee did mention source
>routing.
>Concretely, I think no stations on the FDDI rings last week at InterOP
>sent out any source routed frames that they expected to be handled by
>any other stations.
Quoted from dpANSI SMT 7.2, June 25, 1992:
page 10, "4.1.2 Addressing"
"In the Source Address field of the MAC header, the I/G bit indicates the
presence or absence of source routing (see 4.1.2.5) informtion."
page 13, "4.1.2.5 MAC addresses"
"For a Source Address, which is always an individual address, the first bit
is either reserved or it is used as a Routing Information Indicator (RII) bit."
My comments:
It seems that the dpStandard allows source routing on FDDI, and sooner or
later this feature will be used by some vendors.
Thomas Ruf
SK
--
Thomas Ruf tom@rsp.de Schneider & Koch GmbH
{uunet,mcvax}!unido!rsp!tom Germany
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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!Germany.EU.net!rsp!tom From: tom@rsp.UUCP (Thomas Ruf) Newsgroups: comp.dcom.lans.fddi Subject: Re: bridging source routed 802.5 across fddi/ethernet? Message-ID: <1076@rsp.UUCP> Date: 3 Nov 92 09:50:50 GMT References: <19921102.120905.916@almaden.ibm.com> <rsd3ce0@rhyolite.wpd.sgi.com> Organization: RSP Datensysteme, W-Germany Lines: 27