5 Oct
2008
5 Oct
'08
7:32 p.m.
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
And I just found an old Xyplex switch *8 slot* I believe, loaded. was working last I
checked it (many years ago), has BGP also
and some others:
cisco 1721 (2 of these)
cisco 2501
cisco 2505
I'm moving in a few weeks and they need to be gone by then.
In in scarbough (part of Toronto, Canada)
if I get no response, it's all going to the scrap dealer.
Dan.
_________________________________________________________________
5 Oct
5 Oct
7:43 p.m.
Dan Gahlinger wrote:
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
Umm what PDP was that again?
And I just found an old Xyplex switch *8 slot* I
believe, loaded. was working last I checked it (many years ago), has BGP also
and some others:
cisco 1721 (2 of these)
cisco 2501
cisco 2505
I'm moving in a few weeks and they need to be gone by then.
In in scarbough (part of Toronto, Canada)
if I get no response, it's all going to the scrap dealer.
Dan.
_________________________________________________________________
6 Oct
6 Oct
6:08 p.m.
don't know, need to take pictures.
its large, like a bar fridge, on four wheels
the front panel is missing (plastic). controls are still there.
----------------------------------------
Date: Sun, 5 Oct 2008 20:43:34 -0600
From: bfranchuk at jetnet.ab.ca
To:
Subject: Re: some odds and ends to get rid of
Dan Gahlinger wrote:
_________________________________________________________________
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
Umm what PDP was that again?
And I just found an old Xyplex switch *8 slot* I
believe, loaded. was working last I checked it (many years ago), has BGP also
and some others:
cisco 1721 (2 of these)
cisco 2501
cisco 2505
I'm moving in a few weeks and they need to be gone by then.
In in scarbough (part of Toronto, Canada)
if I get no response, it's all going to the scrap dealer.
Dan.
_________________________________________________________________
5 Oct
5 Oct
8 p.m.
Dan Gahlinger wrote:
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
Jerome Fine replies:
I should not ask, but any details? Qbus, Unibus, Memory, drives,
terminals?
I'm moving in a few weeks and they need to be gone
by then.
In in scarbough (part of Toronto, Canada)
Yonge and Steeles.
Sincerely yours,
Jerome Fine
8:49 p.m.
Dan Gahlinger wrote:
there' s the PDP-11 no one has asked for yet,
I have Dan's earlier message handy, so... Below is the note he sent out
on June 14th. Sounds like it's in a BA123, so I'd guess it's either an
11/53 or 11/73. Jerome, you were inquiring further about it on the list
at the time...
See also:
www.classiccmp.org/pipermail/cctech/2008-June/094900.html
Don't contact me, I have nothing to do with it. --S.
========
I have a PDP-11 system, fairly recent, about the size of a mini-fridge,
on wheels.
last I checked it was still fully operational, but I can't speak to that
now, it's spent the last 2 years in storage.
I just don't have space for it, and it's a bit larger than I can find
use for.
its about 4 feet long, 2 feet wide and perhaps 3 feet high - thats by
eye ball.
it has a TK70 tape drive that's in excellent shape.
the plastic cover over the front is missing which is why I'm not sure of
the model.
I'd rather sell or trade it, if there's interest.
i'm looking for a vax station 3100 model 76 or a 4000 model 90
or some volker craig terminals.
I'd prefer to avoid junking it.
Keep in mind I'm not interested in shipping it, it weighs a bloody ton!
located in Scarborough, Ontario (Canada), so anyone in the GTA area
would be an easier pick up.
Dan.
8:58 p.m.
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
9:04 p.m.
On Sunday 05 October 2008, Zane H. Healy wrote:
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
I've still got two Cisco 7000s that are perfectly capable of routing
DECnet, with interface boards for serial, ethernet, ATM and FDDI, if
anyone has any interest...
They're in Lafayette, IN, and I'll ship if you cover costs + some extra
for my time and effort.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list. 
9:49 p.m.
Patrick Finnegan wrote:
On Sunday 05 October 2008, Zane H. Healy wrote:
But those are a lot heavier and use a bit more power than a 2500. A
2500 is a 1U box.
Peace... Sridhar
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
I've still got two Cisco 7000s that are perfectly capable of routing
DECnet, with interface boards for serial, ethernet, ATM and FDDI, if
anyone has any interest...
They're in Lafayette, IN, and I'll ship if you cover costs + some extra
for my time and effort. I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
6 Oct
6 Oct
10:45 a.m.
On Monday 06 October 2008, Sridhar Ayengar wrote:
Patrick Finnegan wrote:
I don't know why you'd be the one to complain about either of those
facts. :) Besides, the 2500 is much slower and can't support nearly
the number of media types (or number of connections) that a 7000 can...
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
On Sunday 05 October 2008, Zane H. Healy wrote:
But those are a lot heavier and use a bit more power than a 2500. A
2500 is a 1U box. At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
I've still got two Cisco 7000s that are perfectly capable of
routing DECnet, with interface boards for serial, ethernet, ATM and
FDDI, if anyone has any interest...
They're in Lafayette, IN, and I'll ship if you cover costs + some
extra for my time and effort. I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list. 
5 Oct
5 Oct
9:13 p.m.
If the CISCO route doesn't work out I've got a few copies of Netware for
DEC Access for Novell 3.12 and 4.1 servers. So if you have a spare
box that you want to build out to be a Novell server you can use this
add-on to allow it to talk to DECnet (and if I recall it also supported
LAT too...) Just need a pair of NIC's to install into the box....
Its been a looooooong time since I've done any active Netware work, but
I still have just about every Novell product going back to 2.15 SFT.
I would still like to find an original Novell 68000 server with a copy
of S-NET.
Curt
Zane H. Healy wrote:
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.0.173 / Virus Database: 270.7.6/1709 - Release Date: 10/5/2008 9:20 AM
9:49 p.m.
Zane H. Healy wrote:
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
They are. Well, maybe not the 1700s, but the 2500s definitely can.
Peace... Sridhar
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some interest
on the HECnet list.
6 Oct
6 Oct
6:10 p.m.
not that I'm aware of no, they're very recent devices.
----------------------------------------
Date: Sun, 5 Oct 2008 20:58:37 -0700
To: cctalk at classiccmp.org
From: healyzh at aracnet.com
Subject: Re: some odds and ends to get rid of
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
_________________________________________________________________
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ | 
7 Oct
7 Oct
8:52 a.m.
Recent devices? The 2500 platform is upwards of fifteen years old.
-Dave
On Oct 6, 2008, at 9:10 PM, Dan Gahlinger wrote:
not that I'm aware of no, they're very recent
devices.
----------------------------------------
--
Dave McGuire
Port Charlotte, FL
Date: Sun, 5 Oct 2008 20:58:37 -0700
To: cctalk at classiccmp.org
From: healyzh at aracnet.com
Subject: Re: some odds and ends to get rid of
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
_________________________________________________________________
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
9:25 a.m.
but they are still sold AFAIK
the 2500 series is the true workhorse of cisco products.
Dan.
From: mcguire at neurotica.com
Date: Tue, 7 Oct 2008 11:52:25 -0400
To: cctech at classiccmp.org
CC: cctalk at classiccmp.org
Subject: Re: some odds and ends to get rid of
Recent devices? The 2500 platform is upwards of fifteen years old.
-Dave
On Oct 6, 2008, at 9:10 PM, Dan Gahlinger wrote:
_________________________________________________________________
not that I'm aware of no, they're very
recent devices.
----------------------------------------
--
Dave McGuire
Port Charlotte, FL
Date: Sun, 5 Oct 2008 20:58:37 -0700
To: cctalk at classiccmp.org
From: healyzh at aracnet.com
Subject: Re: some odds and ends to get rid of
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
_________________________________________________________________
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
11:17 a.m.
The 2501 in particular was discontinued in 2003. The last of the
2500 series, the 2525, was discontinued early last year, but it was a
very different (modular) design.
They 68030-based 2500 series was replaced by the PowerPC-based
2600 series.
But as far as being the workhorse...most definitely yes. They're
in datacenters everywhere, and will be for a very long time. They're
capable, reliable, pull little power, generate little heat, and they
just plain don't break.
-Dave
On Oct 7, 2008, at 12:25 PM, Dan Gahlinger wrote:
but they are still sold AFAIK
the 2500 series is the true workhorse of cisco products.
Dan.
--
Dave McGuire
Port Charlotte, FL
From: mcguire at neurotica.com
Date: Tue, 7 Oct 2008 11:52:25 -0400
To: cctech at classiccmp.org
CC: cctalk at classiccmp.org
Subject: Re: some odds and ends to get rid of
Recent devices? The 2500 platform is upwards of fifteen years
old.
-Dave
On Oct 6, 2008, at 9:10 PM, Dan Gahlinger wrote:
_________________________________________________________________
not that I'm aware of no, they're very
recent devices.
----------------------------------------
--
Dave McGuire
Port Charlotte, FL
Date: Sun, 5 Oct 2008 20:58:37 -0700
To: cctalk at classiccmp.org
From: healyzh at aracnet.com
Subject: Re: some odds and ends to get rid of
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
> I have some more stuff I need to clear out.
> cisco 1721 (2 of these)
> cisco 2501
> cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
_________________________________________________________________
7:27 p.m.
On Tuesday 07 October 2008, Dave McGuire wrote:
The 2501 in particular was discontinued in 2003.
The last of the
2500 series, the 2525, was discontinued early last year, but it was a
very different (modular) design.
They 68030-based 2500 series was replaced by the PowerPC-based
2600 series.
But as far as being the workhorse...most definitely yes. They're
in datacenters everywhere, and will be for a very long time. They're
capable, reliable, pull little power, generate little heat, and they
just plain don't break.
That's funny, the "workhorse" of all of the datacenters I've seen lately
are Cisco 6509's and 4948-10GE's, with a few older 3750 and 2950s
laying around for "legacy" stuff. I think you're calling
a "datacenter" what I'd call a "low end wiring closet". :)
Hmm, I guess my environment has helped influence my hardware collecting
habits...
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
8 Oct
8 Oct
9:53 a.m.
On Oct 7, 2008, at 10:27 PM, Patrick Finnegan wrote:
You lead a charmed life, my friend. ;)
But no, I was speaking more of "business computer rooms" than
research-class datacenters. Perhaps I should've been more specific.
Every now and then, I do some consulting work for small businesses,
fixing broken network stuff. I see 2501s in production everywhere,
terminating T1 lines, that haven't been touched (or rebooted for that
matter) in a decade.
If they ever go down, they'll likely be replaced by a cheap DSL
circuit (for those whose inbound bandwidth requirement outstrips
their outbound anyway), but most people don't seem to want to fix it
if it isn't broken.
-Dave
--
Dave McGuire
Port Charlotte, FL
The 2501 in
particular was discontinued in 2003. The last of the
2500 series, the 2525, was discontinued early last year, but it was a
very different (modular) design.
They 68030-based 2500 series was replaced by the PowerPC-based
2600 series.
But as far as being the workhorse...most definitely yes. They're
in datacenters everywhere, and will be for a very long time. They're
capable, reliable, pull little power, generate little heat, and they
just plain don't break.
That's funny, the "workhorse" of all of the datacenters I've seen
lately
are Cisco 6509's and 4948-10GE's, with a few older 3750 and 2950s
laying around for "legacy" stuff. I think you're calling
a "datacenter" what I'd call a "low end wiring closet". :)
Hmm, I guess my environment has helped influence my hardware
collecting
habits...
10:39 a.m.
Dave McGuire wrote:
You lead a charmed life, my friend. ;)
But no, I was speaking more of "business computer rooms" than
research-class datacenters. Perhaps I should've been more specific.
Every now and then, I do some consulting work for small businesses,
fixing broken network stuff. I see 2501s in production everywhere,
terminating T1 lines, that haven't been touched (or rebooted for that
matter) in a decade.
If they ever go down, they'll likely be replaced by a cheap DSL
circuit (for those whose inbound bandwidth requirement outstrips their
outbound anyway), but most people don't seem to want to fix it if it
isn't broken.
Here at IBM Poughkeepsie, there are still many 2500-series boxes in
various places. If I had to guess at a number, it would be in the range
of a hundred or so. Of course, we have many more 6500/7600-series boxes
than that, even.
Peace... Sridhar
The 2501 in particular was discontinued in 2003.
The last of the
2500 series, the 2525, was discontinued early last year, but it was a
very different (modular) design.
They 68030-based 2500 series was replaced by the PowerPC-based
2600 series.
But as far as being the workhorse...most definitely yes. They're
in datacenters everywhere, and will be for a very long time. They're
capable, reliable, pull little power, generate little heat, and they
just plain don't break.
That's funny, the "workhorse" of all of the datacenters I've seen
lately
are Cisco 6509's and 4948-10GE's, with a few older 3750 and 2950s
laying around for "legacy" stuff. I think you're calling
a "datacenter" what I'd call a "low end wiring closet". :)
Hmm, I guess my environment has helped influence my hardware collecting
habits... 
10:36 a.m.
New subject: Cisco Switches/Routers (was: some odds and ends to get rid of)
On 8 Oct 2008, at 03:27, Patrick Finnegan wrote:
That's funny, the "workhorse" of all of
the datacenters I've seen
lately
are Cisco 6509's and 4948-10GE's, with a few older 3750 and 2950s
laying around for "legacy" stuff. I think you're calling
a "datacenter" what I'd call a "low end wiring closet". :)
Hmm, I guess my environment has helped influence my hardware
collecting
habits...
Yeah, I'll second that.
All of the secondary school networks I've been installing recently
have been based around dual 6509's with 720 Supervisor Fabrics, 8 x 10-
Gig etherchannels between them and dual 10-Gig links to stacked
3750's. Technically switches, of course, but the lines betwixt
routers and switches are seriously blurred at the high end (esp. with
the Distributed Forwarding Cards).
To bring the thread on-topicwards....
I've only been working with Cisco "big iron" for the last 3 years or
so, but I've never been impressed with the build quality on the
6500's. Sure, the power supplies are hewn from solid basalt (or at
least weigh like they do) but the little arms that hold the port cards
in are unbelievably puny and naff. Were they always like this or have
Cisco succumbed to the declining-quality bug like so much of the
industry since the early 90's?
-Austin.
9 Oct
9 Oct
4:59 p.m.
New subject: Cisco Switches/Routers (was: some odds and ends to get rid of)
On Oct 8, 2008, at 1:36 PM, Austin Pass wrote:
All of the secondary school networks I've been
installing recently
have been based around dual 6509's with 720 Supervisor Fabrics, 8 x
10-Gig etherchannels between them and dual 10-Gig links to stacked
3750's. Technically switches, of course, but the lines betwixt
routers and switches are seriously blurred at the high end (esp.
with the Distributed Forwarding Cards).
In a secondary school, for chrissakes! These schools are better-
equipped than most companies.
I've only been working with Cisco "big
iron" for the last 3 years
or so, but I've never been impressed with the build quality on the
6500's. Sure, the power supplies are hewn from solid basalt (or at
least weigh like they do) but the little arms that hold the port
cards in are unbelievably puny and naff. Were they always like
this or have Cisco succumbed to the declining-quality bug like so
much of the industry since the early 90's?
They're definitely dropping in build quality. It started much
later with Cisco, since maybe 2000-2001 or so. Their last
"battleship quality" switches are the 5500 series. They are built
extremely well.
-Dave
--
Dave McGuire Ahh, you voted for Bush?
Port Charlotte, FL Happy now?
10 Oct
10 Oct
1:32 a.m.
New subject: Cisco Switches/Routers
Dave McGuire wrote:
They're definitely dropping in build quality.
It started much later
with Cisco, since maybe 2000-2001 or so. Their last "battleship
quality" switches are the 5500 series. They are built extremely well.
A company I worked for a couple of years ago dropped Cisco and went for
a Chinese company called Level One. They weren't exactly brilliant, but
they were a quarter of the price. Oh, and crucially - and this is
important for unattended sites - we didn't have any unexplained PSU
fires (yes, fires) like we had with Cisco.
Gordon
11:45 a.m.
New subject: Cisco Switches/Routers
A company I worked for a couple of years ago dropped
Cisco and went for
a Chinese company called Level One. They weren't exactly brilliant, but
they were a quarter of the price. Oh, and crucially - and this is
important for unattended sites - we didn't have any unexplained PSU
fires (yes, fires) like we had with Cisco.
OK, and how many _expalained_ PSU fires did you get with Level One?
{Sorry, couldn't resist...}
-tony
7:37 p.m.
New subject: Cisco Switches/Routers
Tony Duell wrote:
Heh. None, although the plugtop PSUs that came with certain Alvarion
wireless bridges had a tendency to fail and cause weird problems like
the bridge constantly rebooting - it would display the first few
characters of its startup message, and then <BLINK BLINK> on the status
lights, and it's booting up again.
I tested 20 of the "suspect" PSUs. Four of them failed, hard. Failed
hard as in "blew the case apart" failed. No, I don't know how they
managed it.
Gordon
A company I
worked for a couple of years ago dropped Cisco and went for
a Chinese company called Level One. They weren't exactly brilliant, but
they were a quarter of the price. Oh, and crucially - and this is
important for unattended sites - we didn't have any unexplained PSU
fires (yes, fires) like we had with Cisco.
OK, and how many _expalained_ PSU fires did you get with Level One?
11 Oct
11 Oct
12:26 p.m.
New subject: Cisco Switches/Routers
OK, and how
many _expalained_ PSU fires did you get with Level One?
Heh. None, although the plugtop PSUs that came with certain Alvarion wireless bridges had a tendency to fail and cause
weird problems like
the bridge constantly rebooting - it would display the first few
characters of its startup message, and then <BLINK BLINK> on the status
lights, and it's booting up again.
Sounds like excessive ripple on the outputs. Some of these wall-warts are
actually SMPUSs internally, and with one common-ish controller chip the
darn thing will pulse on and off at about 1Hz if one of the cpaacitors
fails. Took me a longh time to find that the first time...
I tested 20 of the "suspect" PSUs. Four of them failed, hard. Failed
hard as in "blew the case apart" failed. No, I don't know how they
managed it.
Again, if an SMPSU, a shoted chopper or similar will do this. On linear
type supplies, I've had shorted rectifiers or smoothing capacitors get
the transformer hot enough tomelt the case (no internal fusing,
apparently the transformer primary is supposed to burn out safely under
such condiitions, all I can say is that it didn't (the primary was still
continuous after I unplugged the thing and let it cool down).
-tony
12 Oct
12 Oct
6:59 a.m.
New subject: Cisco Switches/Routers
Tony Duell wrote:
I _hate_ those wall-wart style PSUs. They're often recommended in
electronics magazines over here as being a safe way to make a mains
powered device. Sorry, even if I say so myself, Id much rather use a
quality mains transoformer, in an earthed metal case, with fuses on all
windings, and so on, wired by me. I can't put any safety logos on it, but
my homebrew PSUs have never run hot, never caught fire, and never given
even a minor shock, which is more than I can say pf wall-warts.
These are SMPSUs. I never bothered to 'scope the outputs. They were
run inside "secure" metal boxes in the lift plant room of tower blocks,
so heat buildup was often a problem. I wouldn't be surprised if some of
the caps were as dry as a... dry thing.
The bits left looked like they had once been bits of an SMPSU, yes ;-)
Gordon
OK, and how many _expalained_ PSU fires did you get
with Level One?
Heh. None, although the plugtop PSUs that came with certain
Alvarion wireless bridges had a tendency to fail and cause
weird problems like
the bridge constantly rebooting - it would display the first few
characters of its startup message, and then <BLINK BLINK> on the status
lights, and it's booting up again.
Sounds like excessive ripple on the outputs. Some of these wall-warts are
actually SMPUSs internally, and with one common-ish controller chip the
darn thing will pulse on and off at about 1Hz if one of the cpaacitors
fails. Took me a longh time to find that the first time... I tested 20 of
the "suspect" PSUs. Four of them failed, hard. Failed
hard as in "blew the case apart" failed. No, I don't know how they
managed it.
Again, if an SMPSU, a shoted chopper or similar will do this. On linear
type supplies, I've had shorted rectifiers or smoothing capacitors get
the transformer hot enough tomelt the case (no internal fusing,
apparently the transformer primary is supposed to burn out safely under
such condiitions, all I can say is that it didn't (the primary was still
continuous after I unplugged the thing and let it cool down).
7 Oct
7 Oct
10:12 a.m.
Dave McGuire wrote:
Recent devices? The 2500 platform is upwards of
fifteen years old.
The 2500 is older. The 1700 is a bit newer.
Peace... Sridhar
On Oct 6, 2008, at 9:10 PM, Dan Gahlinger wrote:
not that I'm aware of no, they're very
recent devices.
----------------------------------------
Date: Sun, 5 Oct 2008 20:58:37 -0700
To: cctalk at classiccmp.org
From: healyzh at aracnet.com
Subject: Re: some odds and ends to get rid of
At 10:32 PM -0400 10/5/08, Dan Gahlinger wrote:
_________________________________________________________________
I have some more stuff I need to clear out.
cisco 1721 (2 of these)
cisco 2501
cisco 2505
Are these capable of routing DECnet? If so there might be some
interest on the HECnet list.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ | 
5 Oct
5 Oct
9:22 p.m.
Dan Gahlinger wrote:
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
I'm not local or I'd check out the PDP11.
If nobody takes the units, would you part with the cards
to at least save those from the scrapper. That and the TK70
drive.
If so, if you can inventory the cards... they should have
#s visible on the ends of the cards... like M####.
If you don't get a taker on the box, inventory the cards
and send me a list.
And I just found an old Xyplex switch *8 slot* I
believe, loaded. was working last I checked it (many years ago), has BGP also
and some others:
cisco 1721 (2 of these)
Does these have any WIC cards in them ?
Do you know if they have the VPN option module ?
Depending on the config I might be interested in them.
-- Curt
cisco 2501
cisco 2505
I'm moving in a few weeks and they need to be gone by then.
In in scarbough (part of Toronto, Canada)
if I get no response, it's all going to the scrap dealer.
Dan.
_________________________________________________________________
6 Oct
6 Oct
2:33 p.m.
Dan Gahlinger wrote:
I have some more stuff I need to clear out.
there' s the PDP-11 no one has asked for yet,
And I just found an old Xyplex switch *8 slot* I believe, loaded. was working last I
checked it (many years ago), has BGP also
and some others:
cisco 1721 (2 of these)
cisco 2501
cisco 2505
I'm moving in a few weeks and they need to be gone by then.
In in scarbough (part of Toronto, Canada)
if I get no response, it's all going to the scrap dealer.
Jerome Fine replies:
I want to pick up the PDP-11. I may also want the cisco.
Please e-mail me or call me at (416) 667-8233
Sincerely yours,
Jerome Fine
5916
days inactive
5922
days old
27 comments
13 participants
participants (13)
-
ard＠p850ug1.demon.co.uk -
austin＠ozpass.co.uk -
bfranchuk＠jetnet.ab.ca -
classiccmp＠crash.com -
curt＠atarimuseum.com -
dgahling＠hotmail.com -
gordonjcp＠gjcp.net -
healyzh＠aracnet.com -
jhfinedp3k＠compsys.to -
mcguire＠neurotica.com -
pat＠computer-refuge.org -
ploopster＠gmail.com -
rescue＠hawkmountain.net