RE: frame relay question [7:34090]
In order to accomodate your needs you could have each remote site have a pvc built over each of the T3s. This removes the need or worry over the physical circuit. How about using a carrier that can do frame relay at the ends and IP or ATM in the middle?? At the remote ends how do you plan to get that much traffic out? The best bet would be a T3 at the remote sites too. -Original Message- From: Chuck Larrieu [mailto:[EMAIL PROTECTED]] Sent: Friday, February 01, 2002 2:26 PM To: [EMAIL PROTECTED] Subject: Re: frame relay question [7:34090] Is ATM a consideration? I believe you can get up to OC12 speeds with ATM, and you can use FRATM ( frame to ATM ) to connect your remotes. Assuming your telco can support you there, you would have the best of both worlds, so to speak. HTH Chuck Yatou Wu wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... thanks for your reply. sorry that I didn't make my question clear. Actually what I want to know is that, if the port speed requirment to every remote site is 28mb, then the aggregate port speed requirement in central site would be 84mb. should I order 2 T3 access circuits or 3 at the central site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because there would be 1 DLCI needed to be split between the 2 T3 circuits. thanks again! Yatou From: Patrick Ramsey To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: Re: frame relay question [7:34090] Date: Fri, 01 Feb 2002 13:41:34 -0500 I usually use the 1 to 8 rule for every 8mb you think you need, order 1 Will each facility be pumping a solid 14mb across the wan all day long? If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3 circuits for the WAN... (15mb shape) -Patrick Yatou Wu 02/01/02 01:20PM Hi, if there are one central site and three remote sites. all the remote sites need to connect to the central site. now I need to decide the access circuit and port speed for the central site. the CIR requirement are following: Remote site A: 14M Remote site B: 14M Remote site C: 14M how many T3 access Circuits and ports are needed for the central sites? any advise is highly appreciated! yatou _ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com Confidentiality Disclaimer This email and any files transmitted with it may contain confidential and /or proprietary information in the possession of WellStar Health System, Inc. (WellStar) and is intended only for the individual or entity to whom addressed. This email may contain information that is held to be privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized access, dissemination, distribution or copying of any information from this email is strictly prohibited, and may subject you to criminal and/or civil liability. If you have received this email in error, please notify the sender by reply email and then delete this email and its attachments from your computer. Thank you. _ Send and receive Hotmail on your mobile device: http://mobile.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34118t=34090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: BPX/IGX Q ! [7:13732]
Shella, This is a normal occurence when a card fails a self test. It will try to correct any errors by doing a resetcd f, you can do a help on resetcd to see the options. You can also do a dspcderrs (card #) to see what errors the card(s) have been taking. If the card has a hardware error on the second page of error msg, there will be some numbers, if it has a 0B in the first spot replace the card (front and back). Hope this helps, Darel Graham p.s. Working on WAN CCNP -Original Message- From: shella kevin To: [EMAIL PROTECTED] Sent: 7/25/01 5:15 AM Subject: BPX/IGX Q ! [7:13732] Is there anyone who is working on BPX or IGX ? Can anyone help me understanding these logs ? I am new to IGX. I did not remove any card or inserted. So whats this all about ? Clear OC3 13 Inserted - Activated 03/2/01 02:05:58 Clear LN 13.4 OK 03/2/01 02:05:57 Clear LN 13.3 OK 03/2/01 02:05:57 Clear LN 13.2 OK 03/2/01 02:05:57 Clear LN 13.1 OK 03/2/01 02:05:57 Info UXM 13 Activated03/2/01 02:05:57 Info UXM 13 Inserted 03/2/01 02:05:54 Info OC3 13 Removed 03/2/01 02:05:39 Clear Failed UXM 13 Removed 03/2/01 02:05:39 Major LN 13.4 Front Card Missing 03/2/01 02:05:24 Major LN 13.3 Front Card Missing 03/2/01 02:05:24 Major LN 13.2 Front Card Missing 03/2/01 02:05:24 Major LN 13.1 Front Card Missing 03/2/01 02:05:24 Major UXM 13 Not Responding - No b ackup available 03/2/01 02:05:24 thanks Shella K. Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13743t=13732 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: FrameRelay Over Utilized [7:13349]
Jeff, Is this a port that you can set the clock rate? If so, you can try to limit the problem by doing so. In addition, ask your telco why overutilization is causing CRC's. This is not a direct result of overutilization (unless you are extremely over), but is more likely a line problem. Are you providing your own Router? If so, ask the telco to dispatch out to prove that the line is OK. Most CSUs have a loop that will loop back to your router. While there are not any stress patterns you can run, the interface will show (looped). If over a 15 minute timeframe you see no CRCs or drops, then the router to the CSU should be good. Keep in mind that interface resets should occur during this test. What is the telco saying with regard to overutlization? Did they say that you are exceeding the CIR? PIR? By how much? Darel Graham -Original Message- From: Jeff [mailto:[EMAIL PROTECTED]] Sent: Monday, July 23, 2001 9:20 AM To: [EMAIL PROTECTED] Subject: FrameRelay Over Utilized [7:13349] Hello, If I have a frame relay switch which is being over utilized will that cause the connection to drop. After looking in the log I see dlci 501 state changed to inactive, line protocol on interface s0/0.1 changed to down, dlci 501 active, this keeps going and going through out the log. The local telco insists that the circuit is overutilized and this is why the connection is dropping. I think it is a telco or csu problem. Also doing a show interface is showing 3000 crc errors and 500 interface resets for the past 3 days. Is there any way to tell for sure whether it is overutilization or a telco problem?? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13372t=13349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Layer3 switch vs Router [7:7406]
switch vs. router question Response - it depends on what you want it to do. If you want something that makes no routing decisions - then a switch is the answer. Switches have basically one job at either level. On the other hand you have warts :) Really - routers will have a different load to handle, even in a multi layered approach. So, a router is likely to be slower in accomplishing mega packets per second. Make the decision based on what it will be used for in the network design. Remember use the right tool for the job and no one gets hurt. Darel R Graham Beer is proof that God loves us and wants us to be happy. -Benjamin Franklin -Original Message- From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 07, 2001 3:52 PM To: [EMAIL PROTECTED] Subject: Re: Layer3 switch vs Router [7:7406] I just wanted to get my $0.02 in, but the message had gotten so long I think the filters dropped my response. I apologize if this is a duplicate. Priscilla At 12:39 AM 6/7/01, Michael L. Williams wrote: Chuck.. I talked to a good friend of mine that knows more of this than I do.. and even HE wasn't clear on the line of switch -vs- router. so my following comments are strickly my thinking out loud.. mostly to get feedback . I don't think there is a difference in a layer 3 switch that does 100,000 packets/sec -vs- a router that does 100,000 packets/sec. However, respectfully submit that I don't know of any routers that can keep up with Layer 3 switches because in multilayer switching the route processor only has to route the first packet in a flow. Yes, but. Isn't that true for a router with fast switching, silicon switching, optimum switching, distributed switching, etc? And with NetFlow switching, a router can take into account access control lists and QoS features that need to be applied to a flow, much in the same way that these new MLS switches can do this with their flow masks. (Thanks for your earlier message that explained flow masks so well.) I agree that MLS has great potential. It sounds complicated to configure and hard to troubleshoot, though. I think I would keep a hub and a protocol analyzer handy when first implementing it, so I could check traffic between the MLS-RP and MLS-SE when things went wrong. Regarding packets-per-second, we need to remember that this is a marketing game. The enormous numbers come from the absolute maximum possible number of packets on a Gigabit Ethernet, taking into account the inter-frame gap and preamble. The test engineers pump frames of the smallest possible size into the switch to make the numbers really look big. (I wonder if they take into account the carrier extension with Gigabit Ethernet? That would make the numbers less.) The PPS is based on this max number of packets coming in one port and going out another Gigabit Ethernet port. They can increase the numbers even more by using multiple ingress and egress ports and no contention for an egress port. The numbers for both switches and some routers are so astronomically high these days that they stretch credibility. Do real-world traffic generators really send that much traffic? Regarding CPUs, the general-purpose CPU on the Cisco routers may not be very fast, but the high-end routers also have Versatile Interface Processors that help with high-speed switching. One last point is that routers have features that switches don't have today. We configure access lists on routers. (Although an MLS-SE can make use of these access control lists, we still configure them on the router). Routers run running protocols. Routers act as firewalls, policy servers, handle RSVP and other QoS requests, connect telephones, act as DHCP servers, connect modems both analog and cable, etc. Just a few thoughts before this interesting discussion undergoes a well-deserved retirement. Priscilla Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7632t=7406 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: HDLC and Routing protocols [7:5739]
Not to be rude or anything, but did you turn on IP routing? Darel R Graham -Original Message- From: Rizzo Damian [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 24, 2001 10:49 AM To: [EMAIL PROTECTED] Subject: HDLC and Routing protocols [7:5739] Anyone know why I would have problems with apparently ANY routing protocol over an HDLC point-to-point Link? Works fine with static routes, but when I try to implement any routing protocol (RIP, EIGRP, OSPF, etc..) they don't seem to work (no routes discovered). Am I missing something? Thanks! -Rizzo FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5747t=5739 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: WAN Switching [7:5774]
Cisco Press WAN Quick Start - gives you the CCNA for WAN Darel R Graham -Original Message- From: Prasanna [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 24, 2001 3:20 PM To: [EMAIL PROTECTED] Subject: WAN Switching [7:5774] Hello all, Happy Weekend! Can comebody suggest a good book that deals with WAN Switching encompassing the BPX, MGX series etc. Thanks in advance, Prasanna FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5782t=5774 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Passed BCMSN [7:5127]
Kevin, Good going. Good Luck on getting a job that will enrich your life. I hope it takes you everywhere you want to go in life too. Darel R Graham -Original Message- From: Kevin Schwantz [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 11:06 AM To: [EMAIL PROTECTED] Subject: Re: Passed BCMSN [7:4546] I passed BCMS with only a book. Never configured a switch before. You just have to memorise it all. Kevin Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5127t=5127 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: point to point T1 troubleshooting [7:4987]
Clear the stats on the interface. If you see input CRC count rising the report the T1 to the carrier (telco). It appears that you still have carrier (DCD) so you still have a T1. But I cannot tell if it is bad since the counters were cleared 18 hrs ago, and I don't know what type of testing that may have been done that might have caused the errors being seen. Darel R Graham -Original Message- From: Daniel Cotts [mailto:[EMAIL PROTECTED]] Sent: Friday, May 18, 2001 12:16 PM To: [EMAIL PROTECTED] Subject: RE: point to point T1 troubleshooting [7:4987] The following link might help: http://www.ieng.com/univercd/cc/td/doc/product/voice/ics7750/tblshoot/tsseri al.htm Watch the wrap. -Original Message- From: park jeongwoo [mailto:[EMAIL PROTECTED]] Sent: Friday, May 18, 2001 10:04 AM To: [EMAIL PROTECTED] Subject: point to point T1 troubleshooting [7:4987] HI all Have anyone troubleshooted PPP TI before? it is leased line and ppp encapsulation. Here is output of sh int s2/0 #sh int s2/0 Serial2/0 is up, line protocol is down Hardware is M4T Description: Leased Line to branch Internet address is 10.10.14.86/30 MTU 1500 bytes, BW 2048 Kbit, DLY 2 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, crc 16, loopback not set Keepalive set (10 sec) LCP Listen Closed: IPCP, CDPCP Last input never, output 00:00:03, output hang never Last clearing of show interface counters 18:08:32 Input queue: 0/75/0 (size/max/drops); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 2368 giants, 0 throttles 8940 input errors, 1913 CRC, 0 frame, 6028 overrun, 0 ignored, 999 abort 13556 packets output, 189784 bytes, 0 underruns 0 output errors, 0 collisions, 3438 interface resets 0 output buffer failures, 0 output buffers swapped out 3672 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5020t=4987 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: To BGP or not to BGP [7:5007]
BGP RULES ! ! ! Try it you'll like it. Darel R Graham -Original Message- From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]] Sent: Friday, May 18, 2001 2:01 PM To: [EMAIL PROTECTED] Subject: Re: To BGP or not to BGP [7:5007] Sorry for the pun. I am currently looking at getting a second ISP for failover and load-balancing. However I would prefer not using BGP if at all possible. Any suggestions would be greatly appreciated. John With two ISPs, you really tend to need BGP. Another important factor in all this is whether you have provider-independent address space, or if your address space is assigned to you by the incumbent ISP. It may be worth doing a careful analysis of connecting to a high-quality single ISP at multiple POPs. With the right carrier and a well-written contract, you actually may be better protected against a major fiber cut. The bad news about having two independent ISPs is that they may both unwittingly buy bandwidth from the same third party, be assigned to the same cable, and get cut by the same backhoe. Even when connecting to multiple POPs of the same ISP, there may be quite good reasons to use a simple BGP. See RFCs 1998 and 2270, and my book, WAN Survival Guide. You don't need to get full routes or a large router. What are your reasons for not wanting to use BGP? Incidentally, a good ISP should not only be able to help you set it up, but it should actively want to if you are a BGP newbie. The good news about two ISPs is that a failure of the routing system in one isn't necessarily going to affect the other. That isn't to say there haven't been major BGP screwups that affected the entire Internet. Load balancing is a very tricky issue. Especially with multiple ISPs, it's often more a goal than a reality. Good load distribution requires a LOT of global internet routing clue, far beyond the CCIE level. Even with the best BGP load balancing, you are still going to experience a fair degree of asymmetry: the query goes out to ISP 1, but the response comes back via ISP 2. This is quite normal behavior, although it may look wierd. Seeing asymmetrical patterns on 30-40% of your traffic, given two ISPs, is very common. FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5041t=5007 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Frame relay and dropped packets... [7:4529]
Rizzo, Have you done any extended ping tests to see if you drop packets? The discrepancy you speak of may only be that someone cleared the counters and what you see is the result. If you can get on each end at the same time and send an extended ping from one end to the other you can watch it come in. This may help to see the packets drop. Although I suspect you don't have any. What is the real problem you are looking for anyway? Darel Graham Hi all, We have reason to believe we are experiencing Dropped packets between us and our remote branch. What I need Is proof, so I can go to my manager and say, here, look at this. He believes just because he looks at the router and does a show frame pvc and the Dropped Pkts statistic is 0, that there are no packets being dropped. Logical Assumption, but I've been told that just isn't the case. Let me throw this out to the groupForget about the FECN's, BECN's and the DE pkts...If you were to telnet to both routers and look at the statistics of the point-to-point DLCI and compare the Output pkts on one end to the Input pkts on the other end, and if you see a discrepancy of 500,000correct me if I'm wrong here, but wouldn't that symbolize Dropped packets???Thanks! -Rizzo FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4604t=4529 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: What is demarc zone? [7:3576]
Hi Everyone, In response to your inquiry about the Demarc. First, the demarc is the point of termination for the LEC (Local Exchange Carrier). As far as a 'zone', that term must be a local anomaly. I have been in the telco world for 25 years and have never heard it referred to as a 'zone'. DMZ is and has been referred to as the demarc too. Although the term has been a little vague, it generally means the place where there is an electrical separation between telco's network and your network. In other words, if telco needs to come in and do some work they can separate your network from theirs at the demarc. That is why it is difficult to get telco to admit to problems when they test 'clean' to the demarc. There is the back half of the demarc. in most cases, that can and does cause many a problem. Any extended demarc, to get it from the demarc to the router, is guaranteed for 30 days after installation. If you have problems, as Jason stated below, you will need to ask the LEC to test from the extended demarc too. They will tell you that there will be extra charges, and any repairs needed to the extended demarc will be time, materials, and a hourly fee too. A LEC is a company like Bell South, Ameritech, Verizon, etc... Hope this helps, Darel Graham p.s. Jason - in other countries the LEC owns everything including the CSU/DSU. My counterparts in Amsterdam (they monitor/install ckts in Europe) say they call it a demarc too. -Original Message- From: Jason Roysdon [mailto:[EMAIL PROTECTED]] Sent: Monday, May 14, 2001 4:23 AM To: [EMAIL PROTECTED] Subject: Re: What is demarc zone? [7:3576] It all depends, of course. I always request to have the demarc extended for my router installs. If there are problems with layer 1, I swap my patch cable and CSU/DSU or WIC, and if it persists (or I should say when it persists), I tell the customer it's a telco problem and call the telco on the way to my car. As discussed before, the demarc is the point of where responsibility goes from one to the other, but it's usually associated with the PSTN or Public Telephone Company. The problem with extending wiring beyond the demarc is that if there is any doubt or question, the telco will try and blame it on your wiring. If the wiring, jack, etc., is all before the demarc, they have to fix it (even if it was originally the customer's wiring). From the way I understand it, demarcation goes back to deregulation. I'm curious if the same term is used outside the US? Basically, before deregulation the telco did everything, including the inside telco wiring and even the phones. With deregulation, they started demarcation to establish the point to which the telco was responsible and where the customer was. -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ Sam wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... This demarc for a data line is usually a closet or server room and not the MPOE (minimum point of entry). Usually the telcos call the MPOE the demarc for voice lines. Subba Rao wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi, I am still new to Cisco networking. While touring a network facility, one of the network engineer's showed a telecom closet and said it is the demarc zone. I heard DMZ a lot (but I could swear I heard demarc zone too). What is demarc zone in networking? Thank you in advance. -- Subba Rao [EMAIL PROTECTED] http://members.home.net/subba9/ GPG public key ID 27FC9217 FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=4397t=3576 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
