> I've been talking to the folks at Usenix about a venue for papers
> of interest to this group. They've very eager to have such papers
> at the LISA (Large Installation System Administration) conference.
>
> Timing is tight for this year -- the deadline is in three weeks (
> http://www.usenix.o
On Tue, 30 Mar 2004, Stewart, William C (Bill), RTSLS wrote:
> > ping did _this_
> Ping is not very informative or accurate.
> If you run a traceroute, which is also not very accurate,
Get the best of both tools and use mtr (assuming unix-like platform).
There are similar tools for windows (ping
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Yo Brian!
On Mon, 29 Mar 2004, Laurence F. Sheldon, Jr. wrote:
> Brian (nanog-list) wrote:
>
> > Does anyone know of a way to get a UPS to trigger a generator to start, and
> > to switch over to the generator power automatically or does this type of
> ping did _this_
Ping is not very informative or accurate.
If you run a traceroute, which is also not very accurate,
you can get some idea about where the delay appears to be.
Is it the DSL segment? Is it somewhere else that traceroute can show you?
The nice thing about delays that are this l
it is interesting that the theme for this year's lisa conference is
"System Administration Reality - Automation, Configuration, and
Users" some concepts near and dear to many of our hearts in the
realm of network, as opposed to system, administration.
randy
I've been talking to the folks at Usenix about a venue for papers
of interest to this group. They've very eager to have such papers
at the LISA (Large Installation System Administration) conference.
Timing is tight for this year -- the deadline is in three weeks (
http://www.usenix.org/events/li
We've got a APC power strip (20A vertical "zero U" mount with 14
outlets) that failed (possibly from heat). The circuit breaker tripped
and would not reset. Their response was that we had too much plugged in
(never mind that we switched to a different 20A strip and it is working
fine on a 20A
On Tue, 30 Mar 2004, David Lesher wrote:
> Side thought, but not a NANOG topic. What in your data center
> really cares if your generator puts out 57 or 63 Hz, not 60.0?
> Why?
Some UPSes such as the Best FerrUPS series and other voltage regulators
and line conditioners that use a ferro-resonant
On Tue, 30 Mar 2004, Joe Maimon wrote:
: [EMAIL PROTECTED] wrote:
: >Greetings NANOGers,
: >
: >Yesterday we starting noticing long delays on an ADSL connection.
:
: Assuming it is not your ISP or that the telco is the ISP.
: Dont believe them. Tell them to reset the port. Tell them to change t
I asked the group some time ago about some problems we were seeing with
MLPPP on our Cisco 7513s.
I have had 5 or 6 people contact me off list to ask how we solved the
problem, so I figured I would post "our" solution to the group. I am
sure there may be other fixes, however this works great for
> DSL BENCHMARK:
> ==
> ATU-R (DS) ATU-C (US)
> Capacity Used: 72% 21%
>
> Interleave FastInterleave
Fast
> Speed (kbps): 0 960 0
256
> Reed-Solomon
Once upon a time, Deepak Jain <[EMAIL PROTECTED]> said:
> APC is very good about replacing equipment that might be their fault.
> Even after warranty. I've never seen another company with as smart,
> techncial staff available quickly. Too bad no one has any real
> experience with their big gear
Line Interactive APC UPS's don't do well with about 160 volts and 83 Hz
input. Apparently, you can only interact so much
Interacting with the line requires battery power. They can't charge and
supply power at the same time, unlike traditional online UPSes. Once
their batteries (LI type) go
Some UPS's do also. We had a site that needed to have some work done on the
building mains. Small, in the country, yada, yada, yada. Owner had a
tractor mounted generator with a gearbox in front of it. Pretty stable once
you tweaked it in because of the HP of tractor (small load too, like 4kVA
Jon,
I saw something like this once, and it was a router bug. Your ping trace
seems to be saying that after the first ping something gets stuck, and
ten more pings accumulate in a queue somewhere until a ten-second timer
expires, or maybe ten messages in a queue is a maximum that triggers som
David Lesher wrote:
Side thought, but not a NANOG topic. What in your data center
really cares if your generator puts out 57 or 63 Hz, not 60.0?
Why?
Some clocks get a little nutso. Because they are powered by
AC synchronous motors with gearing that assumes 60 Hz. (or
50 Hz, as the case might b
Oh, another detail.
Some 98% of the UPSi around are "standby" units. They sit and
trickle their batteries until the line fails, then quickly kick in.
They take 'n' hours to recharge when the line returns.
But there exist another genus. These 'full time' units ALWAYS
run the load from the UPS in
[EMAIL PROTECTED] wrote:
Greetings NANOGers,
Yesterday we starting noticing long delays on an ADSL connection.
Assuming it is not your ISP or that the telco is the ISP.
Dont believe them. Tell them to reset the port. Tell them to change the
pairs. Tell them to switch your line to a diffe
[EMAIL PROTECTED] wrote:
This connection uses a Cisco 827 ADSL router and has several static IPs. All IPs
show identical delays. Using other circuits between the same two locations, we
do not see any delays.
What's the weather like? ;-)
See if you can get the ADSL router to give you upstream/d
Greetings NANOGers,
Yesterday we starting noticing long delays on an ADSL connection. I spent most
of the day trying to track down the problem and getting no where. Telco says
they do not detect any problem on the line... so I am kind of lost. Anyone here
have any ideas? Here are the specifics:
20 matches
Mail list logo
