Random Randomness [7:2530]
This seems a good one for someone to sink their teeth into. Any takers? OK, here's the problem: Our Engineers are working on a drives application that uses Cisco Switches. I've attached a .tif file that contains 3 pages - a System Diagram, a Logical Diagram and a diagram showing some troubleshooting steps they've done. System Diagram: They've got a PLC with two 10BT copper ethernet cards in it. One card does 10BT half-duplex TX data flow of 1700 UDP Frames per second. The other does RX same type & rate. (There are no collisions.) These are plugged into one of two Cisco 2900 XL fiber switches (the 2 switches are connected via 100FX) through a copper expansion card. The 2 2900XLs are connected via 100FX (autoneg, I believe, for full/half dup) to 17 Digital Drives. Each of the 100FX lines to the drives has data flow of 100 UDP Frames per second for both TX & RX. Logical Diagram: Logically, the PLC talks to each Drive at 100 UDP Frames per second. There's a Protection Timer on each Drive that tracks the max time between UDPs Received. Typical time = 10 milliseconds. Worst case = 30 millisecs. Fail = 1 second +/- 10 milliseconds. Problem: On 1-2 drives randomly every 24 hours we see a loss of PLC to Drive UDP Frames for *exactly* 1 second +/- 10 milliseconds BUT *no* loss of Drive to PLC UDP Frames. Troubleshooting steps thus far: 1. Each drive has 2 LEDs, one for TX Activity and one for RX Activity. They connected the LEDs (or maybe the thing that lights the LEDs?) to a Recorder to monitor the TX & RX. They saw a loss of RX Activity for 1 second and *no* loss of TX Activity. 2. Via diagnostic configuration of the switch, they took Drives #1-4 and sent the Frames they were sending to a Sniffer (which was using custom software that the Engineer in charge wrote). This test was unsuccessful because *even though it's a switch & not a hub* they didn't get data unique to Drives #1-4, but ocassionally got stuff from the other Drives, too. This really stumped them because a switch is not shared media, but switched (duh) & they don't think that they should see anything other than traffic to/from Drives 1-4 since they're each on their own port. Next Troubleshooting steps: 1. Set the Switch to Drive 100FX runs to Full Duplex only 2. Put a 10BT hub between the Switch and the PLC & sniff to see what traffic is happening there. Questions: 1. Why were they seeing stuff from other ports when they did Troubleshooting step #2? 2. Is this a known issue with these switches? It's intermittent in that it doesn't happen with any seeming regularity to any one port, but happens to each port at random intervals. Some ports never do it. Some do it more often than others. Haven't seen any pattern to it. Caveat: They have NOT ruled out the possibility that it's a problem with the PLC. Next Troubleshooting Step #2 is designed to determine if the error is in the switch or the PLC. ie. is the PLC sending the data or is *it* stopping for 1 sec randomly - maybe due to buffer overrun? Any help that anyone can provide - whether it be additional troubleshooting steps or KB articles for the Cisco switches etc. - would be greatly appreciated! Kris Jacobs CCNA, Network+ [GroupStudy.com removed an attachment of type image/tiff which had a name of Drives.tif] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2530&t=2530 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Alicia Silverstone teaches Cisco router configurations
Like, wow. Is *that* a great method of teaching or what? Kris Jacobs | mailto: [EMAIL PROTECTED] 665.9997856 - The Number of the Beast on a Pentium > Pieter Jordaan wrote: > > Didn't Know movie stars had time for this stuff :-0 > > http://routergod.com/aliciasilverstone/ > > Next time one of your customers asks for help on their cisco > setups :) _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Interesting site with lots of links.
Terrific link, indeed. Spanks for posting. Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Some drink at the fountain of knowledge...others just gargle. vlan2 wrote: > > http://routergod.com **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE lab date swap FOR MONEY!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I didn't see any flaming going on - I saw some sharp and witty cracks about "dating services" and the like; it seems a few folks may've missed the puns. Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Getting information from the Internet is like trying to drink water from a firehose. [EMAIL PROTECTED] wrote: > > Sounds like the guy is serious. Heck if he wants the date, he must already > know the information and configs. Instead of flaming him maybe we should > spend more time hitting the books or playing with the equipment. My 2 cents **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 350-001 examin very tough
Token ring dead, yes. But ATM? Not doubting, but asking. Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. 666 mph - The speed limit of the Beast Phil Barker wrote: > > Chuck, > > I think I'll be joining you about the same time > (350-001) . But boy do I hate ATM & Token Ring. So > boring learning this stuff, when in the back of my > mind I consider it dead technology. > The only way I can keep my sanity is by planning to > rip as much of this crap out as I can and replace it > with Giga technology etc before I escape to do > something more interesting. > > Regards, and good luck for the written. > > Keep watching the skies .. > > Phil. > > --- Chuck Larrieu <[EMAIL PROTECTED]> wrote: > > Stefan, sorry to hear the bad news. What were your > > breakdowns? > > > > If you are fortunate enough to work for a Cisco > > channel partner, Cisco > > offers a lot of free training. Call your local > > channel manager for > > information. Hell, if you are a good Cisco customer > > you can probably get in. > > Threaten to buy Nortel stuff! ;-> > > > > Global Knowledge has a two day OSPF class and a > > three day BGP class they > > offer. I will be taking both in about three weeks. > > I'll post a report when I > > complete each. > > > > I'm doing self study on ATM, having been told by a > > couple of folks, and > > having determined from the blue print that for > > written it is more > > terminology than anything else. Embarrassed as I am > > to say it, my primary > > source has been ATM for Dummies ( that's enough, you > > guys :-> ) which > > all in all is not really that bad, and whatever I > > can glean from CCO. Oh, > > the QoS book by Ferguson and Huston has a very good > > ATM introduction. > > > > Chuck > > Will make my first attempt late October > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]] On Behalf Of > > stefan cufre > > Sent: Sunday, August 27, 2000 7:10 PM > > To: [EMAIL PROTECTED] > > Subject: 350-001 examin very tough > > > > Hi Guys, i took the 350-001 examin today and failed > > .. > > This examin was very tough and i have never though > > those questions would turn up in the examin. i think > > i > > studied too much and being confused by different > > people > > saying different thing. i decided to go for training > > course to get proper training. Any advise good > > training > > partner. > > > > Thks/Brgds Stefan ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Help with 766 router
Hop down to your local computer store and pick up a standard RS-232 serial cable with the proper connectors (DB9 for the 766, and either DB9 or DB25 for the serial port on your computer). Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. A good way to judge the distance to a star would be to keep watching it until you see it explode, and then count the seconds till you hear the bang. -Edwin Evans Avran wrote: > > I have two 766 routers and do not know what to do to set it up. I do not > have the console cable that came with it so I am trying to connect it > through the 10bT port through a hub. At this time all I want to do is to > get to the IOS and play with basic commands. Please help. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: check
By all means! Just make it out to K. Jacobs. A large denomination, if you please. [1] Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Censorship: The reaction of the ignorant to freedom. [1] Sorry, couldn't resist some humor [2] [2] It's a slow Friday, after all :-) "Paul B." wrote: > > check ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Passed CCDA today...
Congrats at ya, Thomas! Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. C:\GRAPHICS\GIF\NAUGHTY\FILTHY\DISGUSTING\WOW! > "Thomas E. Hopson Jr." wrote: > > Just passed my CCDA today. Is it just me or was that a > difficult test? I was expecting scenario > questions...but...they worked overtime coming up with 'em > :-)... ACRC was easier than this bad boy! > > Thomas Hopson > Newly crowned CCDA (Can't Comprehend Doing it Again!) ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to block ICQ on PIX server
Follow this link for some special applications and the ports they use (such as ICQ): http://www.timhiggins.com/sharing/app_ports.htm Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. I didn't fight my way to the top of the food chain to be a vegetarian. truename wrote: > > Hello, > > How can to block ICQ use on PIX? > Which port is ICQ using? So I need only block that port, right? > > Thanks ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Router for play @ home
I would've liked to've had a tongue! Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Gun Control: Use both hands. Bob Johnson wrote: > > you had a road to lick? > > you were lucky!! > > -Original Message- > From: Maness, Drew [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 3:51 PM > To: Group Study > Subject: RE: Router for play @ home > > "...And I used to get up every morn'n about an 'our before I went to bed and > lick the road clean with my tongue..." > > -Original Message- > From: Cohen, Michael [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 3:12 PM > To: Group Study > Subject: RE: Router for play @ home > > OC12? I'm waiting on the OC192VSR interfaces to stick in my GSR's! Till > then I'll have to settle with my OC48's:) > > -Mike > > -Original Message- > From: ZAPP, JULIAN F (PB) [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 2:08 PM > To: 'Ledwidge, Feargal'; 'Mike Sholar'; Group Study > Subject: RE: Router for play @ home > > 7513 are nice, but I have more fun with my 12000 GSR's. I would rather have > OC12, but the OC3 connections are fast enough. > > -Original Message- > From: Ledwidge, Feargal [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 12:23 PM > To: 'Mike Sholar'; Group Study > Subject: RE: Router for play @ home > > I think you 'll find that a couple of 7513's will make for a pretty good > home lab ... ;-) > > Feargal > > -Original Message- > From: Mike Sholar [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 5:29 AM > To: Group Study > Subject: Router for play @ home > > Hello people! > > Not exactly a cert question, but it applies. I will soon be getting cable > intenet access at the house, and would like to purchase a cisco router to > play with behind the cable modem. What series router should I be looking at, > just to learn the ios and play around with. I am working on my CCNA, and > realize a physical router is not necessary, but I will be progressing > upwards and would like the experience. I looked at the 924 cable > modem/router cisco sells, and the $899 price tag was a little much for > play-time! Thanks for the input. > > Mike > > MCSE, MCP+I ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Job Description
THEY might - but I don't. ;^) Kris "Montgomery, Robert WARCOM Contractor" wrote: > > And THEY wonder why we are smart*sses? > > -Original Message- > From: Kris Jacobs [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 23, 2000 10:45 AM > To: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] > Subject: OT: Job Description > > Found this amusing description during an online job search and > wanted to share some levity. For those who are asleep, pay > special attention to the last sentence. ;-) > > === > Job Description: > > The position is more than a Cisco Associate. We > are looking for someone who has done router > configurations for large companies. In addition > to having a CCNA, you must have a CCIE. > === > > Kris Jacobs | mailto: [EMAIL PROTECTED] > > Proud Member: http://www.wob-l.org > Hostaged by: http://www.mad-techies.org > E-tours are available. > > Judge your success by what you had to give up in order to get it. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
OT: Job Description
Found this amusing description during an online job search and wanted to share some levity. For those who are asleep, pay special attention to the last sentence. ;-) === Job Description: The position is more than a Cisco Associate. We are looking for someone who has done router configurations for large companies. In addition to having a CCNA, you must have a CCIE. === Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Judge your success by what you had to give up in order to get it. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MTU for a DSL connection
Check out http://www.speedguide.net - should have all the information you're looking for. Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Word 6.66 - Word Processor of the Beast > [EMAIL PROTECTED] said... > > What should I set my WIN98SE MTU setting to ? When I get > my DSL connection? and does anyone recommend anyone setting > for MTU for Dial-up? I know there are programs out there to > change it, but does someone know of a good one to change my > MTU on my Win98SE or what about Windows 2000 server and Pro? > > > Brian > Email Address [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Simple Net Traffic Generator????
Have you looked at Qcheck? It may not have all the features you're looking for, but might get you by in the interim. The console works on all WinX platforms; the "endpoints" run on 17 different operating systems, from Windows to MVX to 8 flavors of Unix. Might not be as configurable as you'd like, but the price is right. http://www.qcheck.net/whyqcheck.html Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Not all those who wander are lost. -J.R.R. Tolkien Bob Johnson wrote: > > Mentors stuff looks the most affordable but I'll need a "for Dummies" guide > to get it working on NT > Ganymede's Chariot looks great though I feel it will be too much ... > I've also found LanTraffic V2 from www.zti.fr It looks exactly what I'd like > though again, it's a fair bit of $$$. > > Thanks for the help all.. > > -Original Message- > From: Irwin Lazar [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, August 22, 2000 7:13 AM > To: 'Bob Johnson'; '[EMAIL PROTECTED]' > Subject: RE: Simple Net Traffic Generator > > Have a look at Mentor Technologies' TCP throughput testing tool: > http://www.mentortech.com/learn/tools/tools.shtml > > Irwin > > > -Original Message- > > From: Bob Johnson [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, August 22, 2000 9:53 AM > > To: '[EMAIL PROTECTED]' > > Subject: Simple Net Traffic Generator > > > > > > > > I'm looking for a simple application that will stream TCP or > > UDP traffic at > > a controlled rate from one IP address to another.Ideally it > > would have the > > following features: > > > > 1) Allow changing the bandwidth on the fly ( watch how the > > routers handle > > traffic changes) > > 2) Have rates from say 9.6kbs to 1.5 meg or more (simulate > > feeds from async > > to T-1 or even ethernet ) > > 2) Have some canned traffic but also let you pick your own > > files (see how > > various files act with compression) > > 3) Show traffic drops(so you know when a link is having trouble) > > > > This would be great for router labs... > > I've not yet seen such an application anywhere. I'm familar > > with Cloud and > > other apps that simulate a network. I have the network, I just want to > > simulate different types of traffic... > > > > Thanks ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Out of Office AutoReply: Helping Folks Out- WAS question on ip packet
LOL!! This is a keeper. Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. If your dog falls in love with a guest's leg, have the decency to leave them alone for a few minutes. Paul Borghese wrote: > > Yea I know! I think everyone is on vacation except for me! Please when you > go on vacation, do not rub it in by telling the rest of us about it. Next > time I go on vacation, I am creating a message that says: > > Hi, > > I am not here right now, in fact I am sunning myself on a beach in the South > Pacific. I am sorry you are not here with me but instead stuck at work. I > want you to know "I feel your pain". > > I will be thinking about you when I apply more coconut oil to my already now > tanned body. At the All You Can Eat Lobster buffet digestion will be a > little uneasy knowing you are stuck at work. And of course while drinking > Margaretta's on a moonlit night, you will be in my thoughts. > > Thank you for keeping the economy moving in my absence - hang in there your > time will come. > > Paul Borghese > > - Original Message - > From: "Chuck Larrieu" <[EMAIL PROTECTED]> > To: "Cisco Mail List" <[EMAIL PROTECTED]> > Sent: Saturday, August 19, 2000 11:03 AM > Subject: FW: Out of Office AutoReply: Helping Folks Out- WAS question on ip > packet > > > I think we ought to start a pool - buck a guess - how many messages in > this > > guy's in-box when he opens his e-mail on September 1st? > > > > Proceeds go to the charity of the winner's choice. > > > > Any volunteers to run it? > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > > Sent: Friday, August 18, 2000 2:41 PM > > To: [EMAIL PROTECTED] > > Subject: Out of Office AutoReply: Helping Folks Out- WAS question on ip > > packet > > > > Hello > > Did you try to send an email to Gabriel Neagoe, Netowrking solution > > consultant for S&T Romania, CCNP, CCDA,... ? Well, You are successfull > !!! > > I am his answering machine and I can tell you that this is not the best > > time to try to contact him because he is on holyday till 01.09.2000 and he > > will access his inbox rarely, or maybe he won't access his inbox till > > 01.09.2000. > > SO, if this is urgent please contact : > > Adrian Locusteanu: [EMAIL PROTECTED] > > Gheorghe Berceanu: [EMAIL PROTECTED] > > If this is not an emergency, please have a little pacience till autumn. > > Thank you,--- > > Gabriel Neagoe, GN379-RIPE > > Networking solutions consultant > > Cisco product manager, CCNP, CCDA > > S&T Romania > > tel: +401 20 40 300 > > fax: +401 20 40 310 ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re:
Yes...I finally just wrote a rule. Kris "Taylor, Don" wrote: > > Is anybody else getting loads of empty e-mails from Nobody? > > -Original Message- > From: Nobody [mailto:[EMAIL PROTECTED]] > Sent: Friday, August 18, 2000 8:47 AM > To: undisclosed-recipients > Subject: > > * > The information in this email is confidential and may be legally privileged. > It is intended solely for the addressee. Access to this email by anyone else > is unauthorized. > > If you are not the intended recipient, any disclosure, copying, distribution > or any action taken or omitted to be taken in reliance on it, is prohibited > and may be unlawful. When addressed to our clients any opinions or advice > contained in this email are subject to the terms and conditions expressed in > the governing KPMG client engagement letter. > * ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
CCNA 2.0 Info
I purchased Todd Lammle's 640-407 CCNA study book in the plan of getting my CCNA 1.0 cert by July, which didn't happen. In addition, I also have Cisco's ICRC book. My question is, now that the CCNA has changed to ver 2.0 (640-507), do I need to purchase any other study materials, or will the books I have (in addition to numerous 640-407 whitepapers/practice tests) be enough to enable me to pass the test? If not, which singular book would be best recommended to increase my chances of success? Lastly, if anyone (without breaking the NDA) could tell me the differences between the 407 and the 507 so I could pinpoint what to study, I'd appreciate it. (Yes, I've searched the archives, but didn't find this specifically addressed) Kris Jacobs | mailto: [EMAIL PROTECTED] Proud Member: http://www.wob-l.org Hostaged by: http://www.mad-techies.org E-tours are available. Give a man a fish and he will eat for a day. Teach a man to fish and he will sit in a boat drinking beer all day. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
