Subject: [rbridge] Use of the term "campus"

From: Eric.Gray at marconi.com (Gray, Eric)
Date: Thu, 22 Jun 2006 15:06:35 -0400

Radia,

	Like I said, that's fine with me.  Unfortunately, I 
inherited the term "campus" - as it is used in CFT and CTT
- from the previously-existing document.

	CFT is the abstract definition of a table we use
to determine how to forward an RBridge encapsulated frame
from one RBridge to another.  CTT is the abstract definition 
of the table we use to determine what encapsulation to use 
for any specific un-encasulated frame to be forwarded via 
one or more RBridges.  These terms - not invented by me - 
are dependent on the understanding that the campus consists 
of RBridges and "tunnels" between them (corresponding to 
paths for forwarding RBridge encasulated frames).

	What do you suggest should be used instead?

--
Eric

--> -----Original Message-----
--> From: Radia Perlman [mailto:Radia.Perlman at sun.com] 
--> Sent: Thursday, June 22, 2006 2:55 PM
--> To: Guillermo Ib??ez
--> Cc: Joe Touch; Gray, Eric; rbridge at postel.org
--> Subject: Re: [rbridge] Use of the term "campus"
--> 
--> I agree with Guillermo...that "campus" covers not just the 
--> rbridges, but 
--> the LAN segments and the attached nodes.
--> But I wouldn't include segments connected via routers. For 
--> that, perhaps 
--> "corporate network" or "intranet".
--> 
--> (I did reply, but I said "reply" rather than "reply 
--> all"...I forgot that 
--> this mailing list no longer has "reply-to"
--> set to the list).
--> 
--> Radia
--> 
--> Guillermo Ib??ez wrote:
--> 
--> > Eric,
--> > The usual meaning of  campus network IMHO, refers to a  
--> set of  LANs 
--> > covering several buildings, normally including routers or 
--> multilayer 
--> > switches, switches and end nodes.
--> > To use a campus for the set of RBridges on a segment seems a bit 
--> > confusing.  The  LAN segment term seems correct.
--> > Regards
--> > Guillermo
--> > Joe Touch wrote:
--> >
--> >> Gray, Eric wrote:
--> >>  
--> >>
--> >>> Radia,
--> >>>
--> >>>     I am having some trouble resolving the use of "campus"
--> >>> in the currently available protocol specification with 
--> the way that 
--> >>> it has been used in other documents, mailing list
--> >>> discussion, etc.
--> >>>
--> >>>     In the protocol specification, "campus" is defined as
--> >>> synonymous with the usual definition of "LAN".  Is this use
--> >>> central to the rest of the document?  If so, can we use the
--> >>> word "LAN" instead?
--> >>>   
--> >>
--> >>
--> >> I thought:
--> >>
--> >>     - segment
--> >>         what 802 refers to when describing an ethernet LAN
--> >>         or a single VLAN on a VLAN-capable network
--> >>
--> >>     - campus
--> >>         the set of rbridges on a segment that cooperate
--> >>         together
--> >>
--> >> I don't know if 802 has a term that describes the set of 
--> all VLANs that
--> >> share an infrastructure.
--> >>
--> >> I would avoid the term LAN, as it could mean VLAN or 
--> segment, and I
--> >> don't think that's the intent.
--> >>
--> >> Joe
--> >>
--> >>  
--> >>
--> >> 
--> ------------------------------------------------------------
--> ------------
--> >>
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--> >> rbridge at postel.org
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--> >>  
--> >>
-->