On Tue, 1 Sep 2009, Seth Mattinen wrote:
Yeah, metal dust would be a killer. I don't know what to say either;
magnetic air filters? Maybe salvage/buy some powerful magnets and mount
them in your airflow. See if they collect anything over time. If they
do, at least you'll have evidence.
I've
On Tue, Sep 01, 2009, Dracul wrote:
> Hi,
>
> Followup question regarding WCCP.
>
> How long does it take to refresh cached data in squid? Will wccp be able to
> detect if the cached data is already a few hours old? Lets say
> for news websites that are cached. Thanks!
That's a question for squi
Michael Ulitskiy wrote:
> On Tuesday 01 September 2009 07:26:27 pm you wrote:
>
>> Something really odd/fishy is going on at the facility in question.
>> Either they have a problem and won't admit it, or they're just as
>> baffled as you are. But there is obviously *something* very bad going on
>
Please see inline
On Tuesday 01 September 2009 06:17:11 pm you wrote:
> As another person mentioned, your surge suppressor might not be effective
> enough, or perhaps after a couple of surges it was rendered useless.
>
> If you can afford the financial hit, I'd get some large online UPS's for you
This is my main suspect now. They are doing work in the facility.
Not heavy construction, but they do install cages and cabinets for new tenants
and
they're definitely using tools that produce metal dust.
My theory is that because of we've been the 1st customer who moved into that
facility
we'v
On Tuesday 01 September 2009 07:26:27 pm you wrote:
> Something really odd/fishy is going on at the facility in question.
> Either they have a problem and won't admit it, or they're just as
> baffled as you are. But there is obviously *something* very bad going on
> to fry power supplies like tha
Justin,
I'm not going to argue an importance of proper grounding. Also I do want to
thank you for your reply.
At this point I really doubt that the problem is grounding related, but I'll
definitely keep that in mind.
Also in my experience I've never seen a place where every piece of equipment
w
You might also be experiencing a sag, not a spike, where your going below
the rated power input for the supply. These can be as damaging as a spike,
and the surge protectors don't usually catch them - you have to have a line
conditioner in place for that.
Regards,
Mike
On 9/1/09 11:12 AM, "Micha
Richard,
On the contrary, as I stated below, the 'impact' of BGP scanner (a
housekeeping task executed by the main processor) on 'system' performance
will continue to diminish as more platforms become modular (distributed
architecture) and/or switch packets in hardware (i.e, independent of RP and
He mentioned he was one of the first customers in the colo so
this might be a possibility
--
Randy
-- Original Message ---
From: "Scott Granados"
To: "Seth Mattinen" , "Michael Ulitskiy"
Cc: cisco-nsp@puck.nether.net
Sent: Tue, 1 Sep 2009 17:35:34 -0700
Subject: Re: [c-nsp] Mult
On Tue, Sep 01, 2009 at 03:56:02PM -0700, e ninja wrote:
>
> *BGP scanner is a housekeeping maintenance activity by the main system
> processor. As such, its 'impact' on the 'system' should continue to diminish
> as more platforms become modular (distributed architecture) and/or switch
> packets i
Also make sure that the provider isn't doing work in the facility. I'll
never forget going to an L3 datacenter and arriving to find workmen in the
overhead grinding away and dropping dust and who knows what else in to all
the racks below including a rack of Netra T1's that promptly sucked in th
Hi, I have a Pix out in the field and an ASA5520 that I'm trying to
configure to pass L2L traffic. I keep getting an error that says
IKEV1 IP=a.b.c.d removing peer from peer table failed, no match
ip=a.b.c.d unable to remove peer table entry
What am I doing wrong?
Here are the important config
I have never seen a piece of network gear that is AC which does not have
the electrical ground bonded to the chassis, I was under the impression
that bonding is required for safety.The only time I have ever seen
this is a floating positive side on -48v gear, but even that is not
terribly common
Randy McAnally wrote:
> I'm sorry, but I highly doubt this is why his devices are failing. Each
> device receives ground through the power cord (3rd prong is there for a
> reason, as well it is tied to chassis ground internally). Secondly, the
> cabinets themselves should be grounded as is the ca
Drew,*
Responses inline in italics..*
On Tue, Sep 1, 2009 at 11:10 AM, Drew Weaver wrote:
>Hey there,
>
> We've probably all seen this issue before, with BGP scanner eating up a
> large amount of CPU time on a powerful supervisor/route processor, etc. My
> question is, how are y
As another person mentioned, your surge suppressor might not be effective
enough, or perhaps after a couple of surges it was rendered useless.
If you can afford the financial hit, I'd get some large online UPS's for your
equipment that will effectively isolate you from their power.
Although you d
You could look at something like this:
http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=ACF001
It gets installed in the bottom of the rack to take air from below the
raised floor and blow it up the front of your cabinet. It has a built in
(replaceable) filter, so it will ke
Unless you scrapped the paint off of every joint between the chassis
through the mounting brackets to the rack then you aren't guaranteed a
good connection. That's why most telco screw kits come with the star
washer to help scrap the paint of the rack and why most telco equipment
frames and mo
Unless they vaporized by the short.
Unfortunately I don't have those supplies anymore. They're either in the
garbage
or shipped back to vendor for replacement. In any case it would let me make
certain
about the reason for the failures at most (which is sure very important), but
the
important
You could pull apart a blown supply and look for them. According to the wiki
they should be somewhat visible, at least with a magnifying glass.
--
Randy
-- Original Message ---
From: Michael Ulitskiy
To: cisco-nsp@puck.nether.net
Sent: Tue, 1 Sep 2009 16:35:49 -0400
Subject: Re:
Well, I find the idea with whiskers particularly interesting, because a lot of
things
described are perfectly matched with my situation.
We did recently moved, the data-center does have tiled raised floor (don't know
if it zinced though)
and the airflow is bottom to top which probably helps to b
I'm sorry, but I highly doubt this is why his devices are failing. Each
device receives ground through the power cord (3rd prong is there for a
reason, as well it is tied to chassis ground internally). Secondly, the
cabinets themselves should be grounded as is the case in any proper facility.
By
You should be able to use an export map, apply a specific route-target
to the desired prefixes and add that specific rt to the destination VRF.
Vijay Ramcharan, CCIE #14824 (RS/SP), CCDP.
Net. Eng., Verizon Business - ITSGD.
C: 917-821-8009.
-Original Message-
From: cisco-nsp-boun..
Sure, but what the proper grounding is? Does it mean that I have to run a
dedicated grounding wire to every piece of equipment?
The racks are properly grounded (according to provider) and every server is
screwed to them.
The power is provided via NEMA L5-20P twisted lock connecter with proper
g
Michael Ulitskiy wrote:
I forgot to mention that after the 1st wave of failures we have installed tripp lite
surge protectors on all circuits. These last failures happened with tripp lites installed,
so it shouldn't be transients.
The events are random. Happened during daytime, night-time, wee
>
> In a working MPLS VPN scenario, is it possible to import and export
> specific
> routes between different VRFs?
>
You can use a VRF-level export maps to filter on export or to assign
prefix-specific RTs. You can use import maps to filter specific prefixes
on import. Which suits you better d
On Tue, Sep 01, 2009 at 02:10:22PM -0400, Drew Weaver wrote:
> Hey there,
>
> We've probably all seen this issue before, with BGP scanner eating up
> a large amount of CPU time on a powerful supervisor/route processor,
> etc. My question is, how are you supposed to accurately monit
>> Check out http://en.wikipedia.org/wiki/Zinc_whiskers and Google for
>> "zinc whiskers".
Or, just as useful to you, check out new-ish research results:
http://blogs.physicstoday.org/update/2009/05/how-tin-whiskers-grow.html
Note that it is in-plane strain *gradients* that lead to the whisker
Michael Ulitskiy wrote:
As for grounding lug I would gladly add it to 6500 chassis if that was the only
problem.
Running it to every piece of equipment which count about 50 pieces at the
moment wouldn't be fun at all...
Doh...
I hate to say it, but the devices shouldn't have gone into product
Hi all,
In a working MPLS VPN scenario, is it possible to import and export specific
routes between different VRFs?
For example, if I have two VRFs, VRF1 and VRF2 and I want a particular route
from VRF2 in VRF1, is there a way to import that specific route without
importing all other routes from
Hey there,
We've probably all seen this issue before, with BGP scanner eating up a large
amount of CPU time on a powerful supervisor/route processor, etc. My question
is, how are you supposed to accurately monitor the performance/utilization of
the system when this thing is push
I forgot to mention that after the 1st wave of failures we have installed tripp
lite
surge protectors on all circuits. These last failures happened with tripp lites
installed,
so it shouldn't be transients.
The events are random. Happened during daytime, night-time, weekdays, weekend.
I can't
I second transients (in other words, major voltage spikes).
My previous reply stands.
Good luck.
--
Randy
www.FastServ.com
-- Original Message ---
From: "Scott Granados"
To: "Seth Mattinen" ,
Sent: Tue, 1 Sep 2009 10:39:36 -0700
Subject: Re: [c-nsp] Multiple power supply fai
Well, they claim they have their engineers checked grounding, wiring, UPSes
logs.
They also claim they're doing unintrusive power circuit monitoring and so far
found no problems.
As for grounding lug I would gladly add it to 6500 chassis if that was the only
problem.
Running it to every piece o
Are these random events? Have you mapped the failures against any sort of
power testing / maintenance that the provider is conducting? We used to
blow power supplies in an XO facility in San Francisco and found out after
some digging that their power folks were crack smokers, not professionals
Interesting. Never heard of that. Can I ask you how you found the source of the
problem and what you did to get it eliminated?
Michael
On Tuesday 01 September 2009 01:06:12 pm Geoffrey Pendery wrote:
> Another odd-ball thing to look for, which has plagued us in a few
> locations, is zinc whisker
Move out ASAP. You're going to lose many more servers/routers before the
issue is finally identified, and even more before it is remedied (if it ever
is).
--
Randy
-- Original Message ---
From: Seth Mattinen
To: cisco-nsp@puck.nether.net
Sent: Tue, 01 Sep 2009 10:21:26 -0700
Su
*Response inline in italics...*
On Mon, Aug 31, 2009 at 9:45 PM, David Warner
wrote:
> Hi - Thanks for the feedback.
>
> Yes - same hardware (3845), sw, config and traffic. Just deployed as
> active/standby for HSRP. The chief suspect is the port channel between the
> ESWs but would like to get t
Michael Ulitskiy wrote:
> Hello,
>
> After a little pause it started happening again and we lost 2 more power
> supplies
> (this time in servers) during last week.
> Can anybody advice on a good organization that could do independent power
> analysis
> in New York, NY?
> Thank you,
>
Unfortu
Another odd-ball thing to look for, which has plagued us in a few
locations, is zinc whiskers.
You mention physically moving to a new colo provider, and that your
power is supposed to be clean...
We've had repeated power supply failures because of zinc whiskers in a
few of our sites.
Check out htt
Hi Bruno,
Here's a possibility - some vendors implementations of NIC redundancy in a
virtualization environment require the use of non-burned-in NICs. If the
servers are built offline, the automatic MAC address assignment can (and will)
pick duplicate NICs. The solutions are to either build
Hello,
After a little pause it started happening again and we lost 2 more power
supplies
(this time in servers) during last week.
Can anybody advice on a good organization that could do independent power
analysis
in New York, NY?
Thank you,
Michael
On Friday 14 August 2009 09:56:00 pm you w
Hello,
I have a 2621XM that is using more CPU on the NAT aging process that I
would expect. At this moment that process is sitting around 15% with
~1700 entries in the NAT translation table. In comparison I have other
2621XMs at other sites doing 2500+ NAT translations where the NAT ager
pro
I have a TAC case open for this, but I'll throw it out to the crowd as
well.
Cat6500, dual-sup720-3B, SXH4. Two linecards - a 6748-GE-TX (no DFC) and
a 6816A (DFC3).
The switch acts as a "vendor nexus" - we connect to a bunch of
exchanges, and it's the gateway between us and them. Most of the t
Ray Burkholder wrote:
ME6524 is able to do point-to-point Ethernet L2 circuits (EoMPLS), not
point-to-multipoint (VPLS). ME6524 can be part of a H-VPLS hierarchy
as a leaf, not as a node, which is very similar to do point-to-point
because the multipoint decisions are made on th node.
Going int
>
> ME6524 is able to do point-to-point Ethernet L2 circuits (EoMPLS), not
> point-to-multipoint (VPLS). ME6524 can be part of a H-VPLS hierarchy
> as a leaf, not as a node, which is very similar to do point-to-point
> because the multipoint decisions are made on th node.
>
Going into feature na
Hi there,...
Something Weird is happening to me...the setup is very simple (there's nothing
fancy) but for some reason I do have my switch ports flapping all the time and
due to the fact the spanning tree is busy converging whenever that happens
causing lot of problems...
Have you guys ever fa
ME6524 is able to do point-to-point Ethernet L2 circuits (EoMPLS), not
point-to-multipoint (VPLS). ME6524 can be part of a H-VPLS hierarchy
as a leaf, not as a node, which is very similar to do point-to-point
because the multipoint decisions are made on th node.
Rubens
On Tue, Sep 1, 2009 at
Is it extremly difficult to find information about VLPS support on
cisco products. I would like to build some VPLS configuration and I
would like to know what kind of VPLS configuration the ME 6524 is able
to support.
The product brochure indicates "Support H-VPLS architecture, with L2
ac
Hi,
Followup question regarding WCCP.
How long does it take to refresh cached data in squid? Will wccp be able to
detect if the cached data is already a few hours old? Lets say
for news websites that are cached. Thanks!
regards,
Chris
On Tue, Sep 1, 2009 at 3:36 PM, Dracul wrote:
> Thanks adr
Are you referring to a BGP session between your PE and a CE or the MP-BGP
session between your PE's?
Either way I don't think aggressive dampening is a good idea and is just a
bandaid to the real underlying problem, you have instability inside your
vrf's IGP, this may be due to link flapping, poor
Alan Buxey wrote:
Hi,
Daniska Tomas wrote:
TAC was pretty responsive, they have identified this as CSCtb27643.
It happens in SXI2, both modular and monolithic, and whether in VSS
or not, just when DFCs are in place. The ddts is not public so ask
your local team.
FWIW we just ran into this; TAC
Hi,
> Daniska Tomas wrote:
>> TAC was pretty responsive, they have identified this as CSCtb27643.
>> It happens in SXI2, both modular and monolithic, and whether in VSS
>> or not, just when DFCs are in place. The ddts is not public so ask
>> your local team.
>
> FWIW we just ran into this; TAC told
Daniska Tomas wrote:
TAC was pretty responsive, they have identified this as CSCtb27643.
It happens in SXI2, both modular and monolithic, and whether in VSS
or not, just when DFCs are in place. The ddts is not public so ask
your local team.
FWIW we just ran into this; TAC told me SXI2a would be
Hi,
On Mon, Aug 31, 2009 at 11:56:41PM -0700, Tony wrote:
> We have the situation that when RANCID grabs a config from an
> older 7204 with NPE-300 it causes the CPU to hit 100% for a long
> 4-5 seconds, which is long enough for OSPF with 1 second hello-interval
> to time out and declare neighbour
Thanks adrian,
>That takes time - the WCCPv2 router will take a while to time out the
>now-unreachable server. It would be possible to hack in some code to try
>sending a last "gasping breath" packet to the WCCPv2 router to say the
>cache is about to disappear, but it won't save existing connectio
:-> "Tony" == Tony writes:
> Hi all,
> I'm wondering if there is a way to slow down the speed of VTY (telnet)
sessions on a Cisco router ?
> We have the situation that when RANCID grabs a config from an
> older 7204 with NPE-300 it causes the CPU to hit 100% for a long
> 4-
Hi all,
I'm wondering if there is a way to slow down the speed of VTY (telnet) sessions
on a Cisco router ?
We have the situation that when RANCID grabs a config from an older 7204 with
NPE-300 it causes the CPU to hit 100% for a long 4-5 seconds, which is long
enough for OSPF with 1 second he
On Tue, Sep 01, 2009, Dracul wrote:
> Hi List,
>
> I'm planning to setup WCCP + Squid.
Hi!
> If the squid server should be offline or the squid process dies, will the
> users? port 80 requests automatically redirect to the ?live? internet
> connection??
Yes!
> Because in old "forced" redirecti
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