I'm sorry, but I am finding this a bit warped because there are two
quite different things being debated.
1. The syntax expected by the command interpreter on various Cisco
boxes. Indeed, that discussion hasn't even covered the bases. How about
line aux 0
int async 0
2. The architectural distinction between endpoints at various layers.
ISO 7498, the OSI reference model, does not use either the term
"port" or the term "interface". In fact, it doesn't deal with
physical specifications at all. If one consulted the ISO Internal
Organization of the Network Layer document, the closest you might
get is an abstraction called a Subnetwork Point of Attachment (SNPA),
for which there would be an SNPA-address. That's more or less at the
port level. The IP equivalent would be more like the Network Service
Access Point (NSAP) and NSAP-address.
But OSI isn't IP. For IP, the relevant document would be
RFC 2863 "The Interfaces Group MIB.", and possibly RFC 1812.
In a Cisco specific context, an interface is something represented by an
Interface Descriptor Block. See "Inside Cisco's IOS Software
Architecture." Incidentally, this book does not use the term "port"
in a general way, only with respect to such things as 7200 series
port adapters.
===
For people trying to pass certification exams, I strongly recommend
that you learn the appropriate command syntax for devices you expect
to be tested on.
In the absence of a quotable Cisco document that gives a
Cisco-specific definition, I advise people to go to source documents.
Don't argue what Berkowitz or Oppenheimer or Caslow or whomsoever say
in their books, unless they are citing a well-understood IETF, ITU,
ISO, etc. standard.
>Sorry to say "official." How bout according to Cisco, Bruce Caslow, etc...
>the terminology is ports are contained in layer two devices such as switches
>and interfaces are in layer three devices such as in routers.
>
>
>
>""Priscilla Oppenheimer"" wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> There is no "official" terminology. That's the bottom line.
>>
>> Priscilla
>>
>> At 11:58 AM 8/23/01, Dennis H wrote:
>> >The official terminology is ports are in layer two devices such as
>switches
>> >and interfaces are in layer three devices such as in routers...
>> >
>> >
>> >
>> >""Peter Slow"" wrote in message
>> >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> > > an INTERFACE a thing, such as an ethernet or loopback interface.
>> > > a port is a logical device, and NO a loopback does not count.
>> > > i meant like tcp ports, usp ports, and the like.
>> > >
>> > > Stop being d0rks and copying everyone else who does it
>> > > wrong, and dont be afraid to tell people to speak correctly!
>> > >
>> > > c3660#conf t
>> > > Enter configuration commands, one per line. End with CNTL/Z.
>> > > c3660(config)#port fastethernet 0/0
>> > > ^
>> > > % Invalid input detected at '^' marker.
>> > >
>> > > c3660(config)#interface fastethernet 0/0
>> > > c3660(config-if)#^Z
>> > > c3660#SEE!?
>> > > % Unrecognized command
>> > > c3660#SEE!
>> > > -humboldt
>> ________________________
>>
>> Priscilla Oppenheimer
> > http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=17054&t=16843
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