Hi,
We have a large power bar mounted on a rack that powers several servers
and switches. It keeps popping the breaker that feeds the bar. Is there
any device (ammeter?) that I can measure the amperage draw on that cord
while everything is running?
Thanks,
Travis
Microserv
--
WISPA
WOULD A KILL A WATT BE TOO SMALL? FROOGLE IT, ABOUT $20-25. MINE WORKS
WELL.
Hi,
We have a large power bar mounted on a rack that powers several servers
and switches. It keeps popping the breaker that feeds the bar. Is there
any device (ammeter?) that I can measure the amperage draw on that
The problem is I don't want to power down everything to check it. I
already have a Kill-A-Watt.
Travis
Microserv
CHUCK PROFITO wrote:
WOULD A KILL A WATT BE TOO SMALL? FROOGLE IT, ABOUT $20-25. MINE WORKS
WELL.
Hi,
We have a large power bar mounted on a rack that powers several servers
and
Use an Amp-Clamp, their commonly available at your home center.
But, you can't measure on the cord, you'll have to measure an isolated Hot
or Neutral (Black or White) wire by itself. Easiest way is at the breaker
panel.
-Russ
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL
Jonathan,
You said snip
In fact, we make a targeted messaging product that inserts a toolbar-like,
unobtrusive message into subscriber browsers display.
Is this program or code for sale to wispa members? Maybe tell us a few
details. I was hoping we could use it for late pay's, etc.
Chuck
Hi All,
I finally got to talk to someone at the FCC about CALEA. Unfortunately that
discussion raised more questions than it answered. I'll continue to work
some new directions that I've been given though. I hope to have more in a
week or three.
What I DO know is that there isn't a data
CHUCK PROFITO wrote:
Jonathan,
You said snip
In fact, we make a targeted messaging product that inserts a toolbar-like,
unobtrusive message into subscriber browsers display.
Is this program or code for sale to wispa members? Maybe tell us a few
details. I was hoping we could use it for late
William.L. Edwards wrote:
Can you tell me if this is the correct list to look for a systems
administrator that is proficient in BSD, voIP, and wireless. If not can you
tell me where would be a good place to start? Thank you in advance.
Are you looking to hire one, or do you just have a
Also also, is this even on-topic for
this list, because I'm not sure.)
David Smith
MVN.net
I think it's on topic. Especially if a wispa person can benefit.
George
--
WISPA Wireless List: wireless@wispa.org
Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless
Archives:
Chuck, it's being used for that, expired billing credit card renewal dates,
FCC E911 official limitation acknowledgements, etc. However, it's mostly
been installed in very large cable operators. I'd be happy to talk
off-line. It does scale smoothly from 1K to millions of subs.
I'd be happy to
Marlon, if your subscriber is downstream of a switch, you may be able to use
VACLs http://www.ciscopress.com/articles/article.asp?p=25329seqNum=3rl=1
For this. Given that you can pick the subscriber/subscribers and just hose
mirror copies of all their packets out a switch interface...maybe good
Seems on topic to me, too.
George Rogato wrote:
Also also, is this even on-topic for
this list, because I'm not sure.)
David Smith
MVN.net
I think it's on topic. Especially if a wispa person can benefit.
George
--
Jack Unger ([EMAIL PROTECTED]) - President, Ask-Wi.Com, Inc.
Serving
On Thu, 28 Dec 2006, Jonathan Schmidt wrote:
been installed in very large cable operators. I'd be happy to talk
off-line. It does scale smoothly from 1K to millions of subs.
There have been 2 people who've asked for some other detail on the
list, and I'll add my name in the hat for that.
We are aggressively looking for a full time person to replace our junior
admin that left to start his own consulting business and computer repair.
W.L. Edwards
CEO
RNet Communications
Office 765-342-3554
Fax 765-349-4880
IMPORTANT: Confidentiality Statement:
This message is intended only for
Butch Evans wrote:
On Thu, 28 Dec 2006, Jonathan Schmidt wrote:
been installed in very large cable operators. I'd be happy to talk
off-line. It does scale smoothly from 1K to millions of subs.
There have been 2 people who've asked for some other detail on the list,
and I'll add my name in
Travis,
When you do want to power things down, I suggest one or many of these:
http://www.baytech.net/products/rpcseries.shtml
Not only can you remotely reboot items via a telnet console, but these
devices show True RMS current usage. A clamp meter will show you power
going one way, but in a
Butch, with this list accepting my small excursion into what we do, the
system isn't a proxy and is not installed in line with any traffic but is a
1U rack NOC-installed box. It must be associated with a router or switch
which has all the subscribers downstream. Small slave devices, up to
If it helps William
We contract our BSD work, if it's done right there's no need to have someone
working on the servers very often. Certainly not daily. We also don't do
our VoIP in house. Not that we have a VoIP program, but who's counting
lol Actually, we're working on getting a
There is some truth to Brad's point.
With Trango, we knew exactly how much bandwidth would be available, and it
met the requirement for business grade CIR.
If we didn't get that, then it was a broke link needing repair, which was
likely to be accomplishable.
The problem is our business model
Thanks, George, we're really having a good time with this.
I'll go off line with anything that even hints at commerce but feel
relatively comfortable staying in my realm; how it works and other technical
topics.
The vast majority of deployments have been in cable MSOs. There is a very
small
Amprobe Just have an electrician come in and check that breaker.
Or, if you are like me, you've used them a lot in a former life and have a
couple laying around :-).
Marlon
(509) 982-2181 Equipment sales
(408) 907-6910 (Vonage)
RadioShack has one for $21:
Model 22-602
It's a multimeter with clamp-on ammeter probe.
I had one from them years ago and looked like a real electrician's tool and
worked well. However, this seems to have a clamp-on probe and goes to 30
amps. For under $21, I might get one...handy, you know.
"and now, the rest of the story"... The power supply feeding these
power bars is an APC Symmetra unit. There is no way to get a clamp
around only 1 side of the circuit. The other issue is trying to avoid
having to take down an entire power bar to measure. :(
Travis
Microserv
Jonathan Schmidt
I guess you could CAREFULLY strip off some of the outer insulation so that you
could get to the hot wire with an amprobe.
Or, wait till it trips again, then insert a short cord that's got all of the
phases out where you can get to them already.
Marlon
(509) 982-2181
Marty,
And I probably should be selling, not debating :-(
But, I can't agree more with your post.
Except
When was the
last time a Trango EMPLOYEE asked for your feedback?
Trango is one of the best manufacturers out there, from the perspective of
asking their customers, what they want
Thanks for the offer Ben.
But we'll have all of these units out in the field long before you can get a
box of nuts to me!
If it REALLY bothers me, I'll just run down to the local hardware store and
buy my own nuts. grin
It's MUCH more fun to pick on you guys once in a while though. evil
Jonathan Schmidt wrote:
RadioShack has one for $21:
Model 22-602
It's a multimeter with clamp-on ammeter probe.
I had one from them years ago and looked like a real electrician's tool and
worked well. However, this seems to have a clamp-on probe and goes to 30
amps. For under $21, I might get
Does that APC unit have a monitoring (ethernet or serial) port? You
should be able to pull the amperage used from it that way. Either
through the APC software or through snmp. The proper index number is
listed in its MiB http://rockhounding.net/projects/ups/pdf/apc-mib.pdf
I don't know if it can
Put a smart card in the symmetra, unless you already have one in it. The web
interface will give you an idea of the load on the port.
Keep in mind power-factor vs real-power readings.
-Russ
_
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Travis
Already have one... the problem is this is a 12kVa unit, so we have 8
power bars coming off 8 different ports on the back no way to tell
which ports are overloaded and which ones aren't. :(
Travis
Microserv
Russ Kreigh wrote:
Put a smart card in the symmetra, unless you already have one
If you peer with Akamai, LimeLight, Google, Yahoo, etc you won't
pay for transit of their content and it will be fast... very fast.
Yes, if your performance problem is to those locations.
The problem is most transit providers already have good peering with them.
The reason to cache, is to
I go to see Mickey Mouse for a few days and look where this thread has
gone...wow
So, my 2 cents...
One of the largest concerns in the license-exempt world is the question of a
system's interference robustness. However, before we can get into further
detail on the pros and cons of Alvarion VL
Why is it politically correct for a Appliance vendor to charge for
accelleration, and not an ISP, from a Net Neutrality perspective?
As WISPs, shouldn't we be charging Microsoft, Google, and Yahoo, a price for
offering cached services (on-net) to them, and reducing their bandwidth use
of their
Hi,
Anyone available that knows Javascript? Specifically for use with the
Google Map API... contact me offlist... I need a little help finishing a
project... (I'm just not a programmer). :)
Travis
Microserv
--
WISPA Wireless List: wireless@wispa.org
Subscribe/Unsubscribe:
Marlon,
You get an A+ on your definitions of terms I used. I don't challenge those
definitions.
However, I challenge the relevance of just about all your responses to my
comments.
I recognize I may not have been super clear, but I was assuming the reader
would apply their knowledge of the
Marlon,
I will add... I made one error
I said if interference was from other OFDM.
I meant to say, if interference was from other CSMA/CA.
CSMA/CA is better apt to survive interference from other CSMA/CA gear, than
TDD is.
In other words, retransmitting is likely going to find free
There are a couple issues here.
First, the most probable cuse probably is a failing breaker, which if were the
case would require power shut down. Thats the purpose of a UPS, is that power
can be disconnected without equipment on UPS going down.
Second, a UPS's draw can change based on whether
OOPs, missed that detail. That complicates matters a bit :-(
Tom DeReggi
RapidDSL Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: Travis Johnson [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, December 28, 2006 4:44 PM
Charles,
WOW! Great Post! That covers about everything.
It increases the understanding of the complexity, but it doesn't answer the
ultimate question, What to use.
What we really want is an efficient OFDM system, with a strong TDD w/ARQ
MAC, RFThreshold, Good Noise Filtering, Packet
I just installed a PTP 900Mhz Atheros SR9 StarOSV3 link that had 5% packet
loss that I could not get rid of.
(Set 12mbps modulation, and averaged greater than 20db SNR.)
In theory, CSMA/CA should not get PAcket loss, like a TDD system might, as
the CSMA waits for acknowledment and re-transmits
Carl,
You bring up a point that I do not disagree, other than it is jsut the
reality of our industry.
There is no adequate standard today. Basic WiFi on its own just has to many
flaws in design to be adequate High ARPU Business class scale.
What you talk about is the Promise of WiMax. I don't
lol...gotta love it! I'd argue it doesn't have to be only $300 to sell.
I'd pay two or three times that for such a product.
But honestly that isn't that much to ask as many products are already so
close...Alvarion VL being one of the closest, but still no cigar.
I like what you said about
Tom,
After making several retransmission attempts and still not getting a
packet through, the radio will discard the packet and move on to sending
the next packet. In other words, the packet is lost. Often, depending on
the radio or the operating system, the number of retransmission attempts
Good stuff. In the order presented, the text makes some statements about RX
threshold damping.
It is a powerful tool for a higher
modulation radio operating in a noisy environment, as it allows the radio to
block out and ignore signals received below the preset RF Rx Threshold.
By creating an
Canopy's C/I of 3dB is only the 10mbps at signals much stronger than
sensitivity. At low signal it's always been higher than 3dB, and the 20mbps
Canopy requires higher C/I under all circumstances.
OFDM provides a range of signalling speeds, from BPSK (same C/I as the 10mbps
Canopy) through
Again, I think they're already being made, aren't they? for 3.5GHz. Doesn't
have to be final WiMAX ... I presume that all the pre-WiMAX products are OFDM
and TDD. I've yet to hear of one at 900, 2.4, or 5. Anyone? Am I all wet on
what the pre-WiMAX products are? I could very well be all
It was a lot more fun back then, being on the Trango side. When
Sunstream/Trango was the undisputed leader, it was easy to win a debate.
Its not so easy and clear anymore. Every player is a winner and a loser
from some perspective.
Maybe they can do it again!
I don't doubt that they can do
Imho, packet loss on your system is happening when the latency or retrans is
exceeding the tcp timeout ..?
Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel 787.273.4143 fax 787.273.4145
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
I think you'll get your wish. Isn't this what WiMAX is?
Yes, but don;t predict we'll see a 900Mhz verion any time soon.
But 5.8G, yes, I think it will be first half 2007.
Tom DeReggi
RapidDSL Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: Rich Comroe
Alvarion's got actual WiMAX gear Rich. Our WiMAX-certified BreezeMAX 3500 is
being deployed in over 100 commercial networks along with about 120 trials. In
the U.S. we are selling and deploying early BreezeMAX 2500 and BreezeMAX 2300
to a handful of operators. These are TDD 802.16e-ready
Lots of myth around WiMAX unlicensed. I've posted about it many times
and spoke about it many more, but people still continue to believe the
myths. FOLKS, get it through your heads that WiMAX in unlicensed has
lots of challenges until they can solve the problem of the .16 MAC in UL
bands.
I know
Thanks for the info, Patrick. I sure hope these systems have all the
attributes that Tom Brad were describing, and they're real and can be
evaluated live now. I presume they have OFDM and TDD. Can anyone comment if
they have everything in Brad's wish list?
What we really want is an
Better you tell me Rich. You in particular, I long ago learned, are eons
smarter than I.
http://www.alvarion.com/knowledgecenter/datasheets/#BREEZEMAX Specifically
select the BreezeMAX 2300/2500 pdf.
If you are guys are asking about UL, the market will not support the costs of
the richness
Can't argue with a manufacturer actually participating heavily in the WiMAX
process. But I respectfully disagree here a bit.
Fact is,
it ain't ready because UL WiMAX ain't ready.
IMHO It ain't ready because licensed MMDS replacement was the original 802.16
plan. Thoughts of UL had been
Where's the disagreement Rich. I said the WiMAX MAC was not ready for
UL. I did not say in detail why (at least not in this post). For sure it
is because the MAC was developed for licensed (LMDS actually) -- that's
my point. It was never conceived of for UL.
---
Also, there IS a WiMAX UL standard
Sorry for the cross post.
I am looking at replacing my array of TR6500s with something that can
handle more than 30 concurrent users in a graceful manner.
I have been looking at the Microtik line of products with an SR2
400mW Atheros radio in it.
I know Matt Larsen uses StarOS with
Ryan,
Why not stick with Tranzeo or one of the other legal (FCC-certified)
brands? There's no need to go the illegal route and that includes even
price these days. Plus, with a legal product you'll get the benefit of
support and a warranty.
Patrick Leary
AVP WISP Markets
Alvarion, Inc.
o:
On Thu, 28 Dec 2006, D. Ryan Spott wrote:
I have been looking at the Microtik line of products with an SR2
400mW Atheros radio in it.
Does anyone have any input as to what direction to go?
Really, this depends on what you want the AP to actually do (other
than be a simple AP). I like the
On Dec 28, 2006, at 8:52 PM, Butch Evans wrote:
On Thu, 28 Dec 2006, D. Ryan Spott wrote:
I have been looking at the Microtik line of products with an SR2
400mW Atheros radio in it.
Does anyone have any input as to what direction to go?
Really, this depends on what you want the AP to
On Thu, 28 Dec 2006, Patrick Leary wrote:
Why not stick with Tranzeo or one of the other legal
(FCC-certified) brands?
Good idea, Patrick, but it doesn't answer the question that was
asked.
--
Butch Evans
Network Engineering and Security Consulting
573-276-2879
http://www.butchevans.com/
On Dec 28, 2006, at 8:44 PM, Patrick Leary wrote:
Ryan,
Why not stick with Tranzeo or one of the other legal (FCC-
certified) brands?
Are you trying to troll? :) I am using all Tranzeo gear now. I am
also looking for other options. I have 2 6500 series radios up at
this site. They are
Butch, I wasn't trying to answer the question. I was asking one. I
honestly do not understand the motivation these days for going the
illegal route. I mean, besides simply being illegal, such a vendor has
no quality controls, they can also just up and walk away from you and
quit anytime, they have
Where's the disagreement Rich. I said the WiMAX MAC was not ready for UL
I hear you. My disagreement is that a UL wisp standard SHOULD have been ready
YEARS ago.
HiperMAN is different than HiperLAN/2 (I incorrectly called it HyperLAN2 in the
previous posts). You say the spec for UL WiMAX is
I've been around here for 8 years (well, WISP lists in general) so I
can't be a troll in my own house! :) And this is not about Alvarion,
it's about legal vs. illegal systems.
As much as I like kit cars Ryan (I always thought it'd be cool to build
one), your analogy is incorrect. The FCC
Rich, I said the spec (profile) for UL WiMAX IS done and has been for
over a year. But the spec does not solve the 802.16 problem in UL and
all the vendors know it, thus the creation of 802.16h (which we have not
yet discussed in this thread) http://www.ieee802.org/16/le/ which we
chair. UL WiMAX
Patrick,
This is simply the LOWEST blow I have EVER seen you throw. You have
always been an Evangelist and I have seen you come and go from several
lists, while me and my people have survived legal blind sides and we
have outlived several LARGER companies.
Yep, pretty low. Plus it did not
Can anyone just answer the questions I had without fighting amongst
yourselves? (I thought Xmas with the inlaws was bad!)
Lonnie... If I were to buy a StarOS type product, would it be
compatable with the CPQ series radios from Tranzeo?
What sort of client load should I be able to support
On Thu, 28 Dec 2006, D. Ryan Spott wrote:
I agree. Other than some *cough*open source*cough*licensing
issues*cough* I can see that there is lots that can be done with
the Microtik.
Open source has nothing to do with it. Mikrotik does adhere to the
open source licensing requirement. As for
Lonnie,
Not sure why you are fired up. Your product is software that gets loaded
into hardware so I'm not talking about you. I'm talking about illegal
hardware and what is untrue about what I said about illegal hardware
suppliers?
Patrick Leary
AVP WISP Markets
Alvarion, Inc.
o: 650.314.2628
c:
Ryan,
I have no personal experience with the Tranzeo line so I cannot answer
directly. Through helping people on our Support Forums I know some
people have nothing but trouble while others have a really good
experience with the CPQ series on our Access Points. I think it all
depends on the
I happen to use his software, and assemble hardware from various vendors,
including him.
I am scrupulously careful to be within the 2.4 and 5.8 eirp rules ( well
under all limits) and don't deploy wild and crazy configs. I suppose I am
illegal, but then recently I visited a consultant who had a
On Thu, 28 Dec 2006, Mark Koskenmaki wrote:
IF someone built a product that would perform anywhere near as well
and had anywhere NEAR the features, I might consider buying it.
As much as I am intrigued by your VL product, every time I look at
it, I remind myself that in order to be even
We never used the TRCPQ, but we do have several hundred TRCPEs and
TRCPE200s. We have 3 Access points with ~50 clients each- a combination
of TRCPE, CPE200, and DemarcTech units. This handles well. If I remember
correctly, the TRCPE is Atheros based(?) and I would think that it
should work
Lonnie, you are just doing what I wish I were smart enough to do --
write code people are willing to pay for. Software is always better than
hardware: you avoid FCC hassles, you have no hard shipping or packaging
costs, you need no production facilities, you don't have to negotiate
purchase of and
Butch Evans wrote:
It is my contention (and yours, it seems) that a router
at the CPE is necessary.
BINGO.
Qwest DSL has a router at every customer. Ever taken a look at what
those Actiontec wireless dsl routers do...
As we stated in an earlier thread, those pesky routers matter more
Correction. It's late, I'm tired, and have had too much wine. I meant
that the TRCPQ is Atheros based, not TRCPE. This is from a Tranzeo list:
The CPE90 is Marvell.
The 900, the CPQ, the 6000, the 49, and the 5a are all Atheros based.
The CPE200, the 1000, 2000,
Then you must not be aware that Lonnie is now also selling the complete
package.
The newest product is Star V3, Atheros cm9 and a gateworks customized
board to Lonnies specs.
It's called the WAR board, or Wireless Advanced Router. They come in 2
flavors, a 4 port 533MHz proc or a 2 port
Right guys, I accept all that may be true but even in the DSL world,
customers provide their own routers and that is certainly true of
commercial customers.
In any event, VL does many of things for which you think make a router
so critical. Even better, it does a lot of them at the RF level which
Patrick Leary wrote:
Right guys, I accept all that may be true but even in the DSL world,
customers provide their own routers and that is certainly true of
commercial customers.
Not in the Qwest DSL world. at least the resi stuff they sell.
Comes with an actiontec or 2wire wireless router
79 matches
Mail list logo
