Subject: AppleTalk and DECNet on the campus
network!
Date: 17 Aug 1999 06:28:07 -0400
From: gogan@net.unc.edu (Jim
Gogan)
Organization: Supporting Guru
Newsgroups: unc.support
AppleTalk's time is increasingly running out
....
The North Carolina Networking Initiative
(NCNI), consisting of UNC-CH,
Duke, NCSU and MCNC, is in the process of
significantly upgrading the
Internet/Internet2 connectivity among these
institutions. By early
Novemeber, the existing router connections
from each campus to the
regional Internet/Internet2 through the NCNI
will be replaced with new
Cisco GSR 12000 routers, consisting of 2
OC-48 (2.4 Gb/sec) links to the
NCNI backbone and gigabit Ethernet links to
the campus network.
In order to connect to these switch/routers,
each campus will be upgrading
its existing on-campus router to new
multigigabit switch routers, capable
of filtering and forwarding many
gigabits/second of traffic at wire speed,
supporting Quality of Service mechanisms for
differentiated service
levels.
It is important to note that the Cisco GSR
and the other gigabit
switch/routers that we are looking at for
the campus upgrade DO NOT
SUPPORT AppleTalk OR DECNet!!! The GSRs
support IP ONLY; other vendors'
products support IP and IPX ONLY.
Given that the current campus network
architecture uses two main routed
domains to the Internet: one consisting of
the School of Medicine, the
other consisting of the rest of campus, this
means that once these new
switch/routers identified above go in place
later this calendar year (the
exact date is still not known for sure --
depends on deployment of
Interpath fiber, which is now scheduled for
November 1st), we will NOT be
able to forward AppleTalk or DECNet traffic
between the School of Medicine
and the rest of campus.
As the growth in on-campus network traffic
(and the need for
differentiated services) requires further
deployment of these switch
routers, the inability to forward AppleTalk
or DECNet traffic will extend
throughout the on-campus network. This is
something that we have stated
for the past year now -- vendors of new
generation gigabit switch routers
are NOT supporting protocols other than IP
or IPX. That is just a given
of the current marketplace.
Macintoshes will continue to work on the
campus network; AppleTalk will
not!! If you have old Macintoshes that
cannot support recent versions of
the OS that can utilize IP for print/file
services or you have old Apple
LaserWriters that can only utilize
AppleTalk, you need to evaluate
upgrades for these as soon as
possible.
To be as specific as possible in terms of
dates, it appears as though, as
noted above, AppleTalk and DECNet traffic
between the School of Medicine
and the main campus will no longer be able
to be forwarded effective
November 1, 1999. In terms of elsewhere on
campus, departments should
begin planning for the end of AppleTalk and
DECNet throughout the campus
network (even within buildings) by August 1,
2000 at the latest!
If there are questions, please contact me
directly. Thanks!
-- Jim Gogan
Director, ATN Networking and
Commuications