RE: WHIZZ KIDS WHO HAVE THE CCIE number
Though I can't comment on being certified at 12 or 13.. when I took my certification courses over the last year of my life, there were guys in the class who were 17 when we started, 18 when we finished.. we couldn't even all go for a beer after class, but that was cool. I considered doing my Cisco certs right after high school, back in 1997. I did 2 of my MCP classes while in grade 12.. Windows 95, and Windows NT Workstation. Quite honestly, I've been a big computer geek since I was 11 or 12. I was rejected by society for different reasons at a young age, unpopular even in Kindergarten, and found peace in the digital world at age 10 or 11. Every kid has a hobby.. at 12 mine was hockey cards and computers. The computers stuck with me. Now I'm 21, and still spend an amount of time on computers per day that most would consider unhealthy.. but it interests me, and to be honest, I love my job. Now, if only we could get rid of the suits and ties at my company... ;P This morning, I sat a 3 1/2 hour meeting with 10 reps from Nortel, going over the features of the Nortel Business Call Manager -- my company is trying to teach me about telecommunications, and I'm helping train the telecom guys on the data stuff, as BCM is a box that speaks OSPF, RIP, IP, H.323, and interfaces other stuff for VoIP, and gateways to the PSTN for failover, and PBXs. What the generation that follows me is going to learn, and what the 12 and 13 year olds are even already doing, just boggles my mind.. I ran a BBS at 13.. these kids are running webpages with hits from worldwide, and designing spectacular graphics.. or the other kids who are running little mini-LANs at home. I am moving into my cousin's basement suite, and have no doubt that my 13-year old cousin is going to pick up on my Cisco stuff no problem. So what? He also has a girlfriend, skateboards, plays hockey, and has tons of friends. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: William E Gragido Sent: Friday, October 13, 2000 11:58 AM Subject: RE: WHIZZ KIDS WHO HAVE THE CCIE number I have to agree at least to a certain point---adolescence and those great teenage years should be spent learning about yourself, others and academics. What ever happened to sneaking out of the house, dating and going to parties? -Original Message- From: NetEng Sent: Friday, October 13, 2000 10:41 AM Subject: Re: WHIZZ KIDS WHO HAVE THE CCIE number If your 12 or even 18 and trying to acheive any certification, your life must suck. What happened to having a childhood? I didn't know what I wanted to do until I was 20something. These kids should be forced to go to ChuckyCheese eveyday for a year. "Kris" wrote in message I commend young kids who attempt and more importantly achieve these things. Though at a young age I was actively involved in subjects taught in most first year university comp sci courses, I must say that it pales in comparisson to a 12 year old who is working towards CCIE. He is sponsored by Global Knowledge btw. Kris, From: "McCallum, Robert" [EMAIL PROTECTED] Subject: WHIZZ KIDS WHO HAVE THE CCIE number Here is a little poser for you all. Who is / was the youngest CCIE and what was his / her age when they attained the CCIE? Robert McCallum BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: why tokenring?
If anything, it has a lot to do with the fact that SNA is VERY time-critical.. it doesn't care how FAST a link is, but rather that it recieves its packets in a relatively predictable time period.. it doesn't like it to take 15ms for the first packet.. 33ms for the second.. 12ms for the third.. and 24ms for the fifth. Fluctuation an delay is DEADLY in an SNA environment. Since there is a set size of a ring, and a packet has to travel the ring regardless of whether there is a payload or not, delay fluctuates a lot less in a Token Ring environment. This is atleast my understanding between the logic behind using TR. If I am totally off base, feel free to correct me. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Alldread AK2 Robert J Sent: Thursday, October 12, 2000 5:19 AM To: Cisco@Groupstudy. Com (E-mail) Subject: SNA: why tokenring? I am just curious as to why SNA still runs on tokenring today. Is there any reason that it cannot just hook right into an ethernet network?? I have read a few white papers on SNA, and I assume that because tokenring was the major LAN media back in the day, and because SNA uses RIF's to determine paths to other hosts, that SNA was built requiring the use of RIF's. Is this correct?? thanx, skin-e _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: books for ccda
This is really a question for the Associates list, but I'll answer it here, as I am not sure if you are signed up for the Associates list. I have been preparing for this exam, but am yet to actually sit the test. I have used both DCN, and Priscilla Oppenheimer's Top-Down Network Design. I have found both to be excellent sources of information, and plan to keep both on my bookshelf as bible-like references in the future. Also, I seem to remember Priscilla having flash cards on her site for prep for the CCDA exam (http://www.priscilla.com). Both very good books, I found Priscilla's writing style more bearable to read as a human trying to read it cover-to-cover. I found DCN to be a good insomnia-breaker, and reference guide for the concepts which I had a hard time grasping from Top-Down (not often, due to Priscilla's excellent explanations). I HAVE read both cover-to-cover.. and highly suggest taking the time to work through the case studies in the DCN book.. as I have heard there are a lot of scenario / case studie questions on the exam. I can not verify this personally, as I have not sat that one. For the DCN book, I have found pdf copies of it floating around on the net. I am not sure about the legality of this, but do a search on Cisco's website for it.. I believe it is usually called dcn.pdf -- I found this file a few days after my return period at Chapters expired.. so I was out the $90CDN it cost me.. OUCH. But well worth the money, if you prefer bound media. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Audio Kisei Sent: Tuesday, October 03, 2000 9:56 PM To: [EMAIL PROTECTED] Subject: books for ccda sorry to bother everyone. i'm sure this question has been asked numerous times but I'd like to take just one last poll before i go out and spend the $$. what are peoples thoughs on books/references for the ccda? lammle's old 441 guide? DCN? CCDA exam cert guide by kim/bruno? top down network design by oppenheimer? anyone's thoughts on a *combination* of these books you found helpful would be much appreciated. thanks again for your time, AK CCNA **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] BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: Could someone help me !
There is a few things going on here. Everyone that has replied that I have seen so far, has missed a major thing. Source Port, and Destination Port swap for the return packet. Scenario #1, You want to browse a webpage. Your PC: 10.192.168.1 Web Server: 10.0.0.2 Your PC sends out a packet, this packet will look partially similiar to this layout: Source Address (Where it came from) : 10.192.168.1 Source TCP Port (Random number 1023) : 31000 Destination Address (Where it is going) : 10.0.0.2 Destination Port (Well-known service port) : 80 When this packet comes to the webserver, it looks.. "My IP Address? Yes. Port number? tcp/80. Do I know what that port is? Yes, pass it to Apache." Apache then looks, "Source 10.192.168.1, new session. Source port 31000." It adds : 10.192.168.1,31000 to a table of active connections, and preps a packet with the information requested. It will look like this: Source Address (Where it came from) : 10.0.0.2 Source TCP Port (Random number 1023) : 80 Destination Address (Where it is going) : 10.192.168.1 Destination Port (Well-known service port) : 31000 The packet is then sent through the network to your PC. Your PC looks at the packet, "For my IP? Yes. What port? tcp/31000. Do I know what that port is? Yes, I just sent a request in Netscape window #2 on that port to the source address of this packet." Pass it to Netscape, which opens the file. This process continues, allow with TCP ACK packets, since this is a tcp session, until that file is loaded. This is also done in several threads at once, to load your webpage faster. If this still confuses you, draw a picture on a big piece of paper.. two computers.. several arrows going left and right, and write it out visually. Just try to remember that for the scenario listed, your PC always uses tcp/31000 (only in this scenario, it is a random number between 1024-65536).. the webserver always uses tcp/80. Whether these numbers are "Source" or "Destination", depends on the direction of the arrow. 1 More attempt.. if the first didn't work. Think of it like an airplane flight, round trip. You have a source airport, and a destination airport. On the way home, they are swapped. Vancouver to Toronto: To Toronto, your ticket (packet) is like this: Source Airport (where I'm leaving) : YVR (just like an IP, it is unique) Source gate : Domestic, A30 Destination Airport (Where I'm going) : YYZ Destination gate : Domestic, I43 On the way home, for the sake of this example, your flight happens to use the same gates (since they do in a tcp session). This is a round trip ticket, so I'm not leaving from Vancouver, I'm going to Vancouver. Source Airport (where I'm leaving) : YYZ (just like an IP, it is unique) Source gate : Domestic, I43 Destination Airport (Where I'm going) : YVR Destination gate : Domestic, A30 Just an analogy to see if it helps.. some people get it, some don't. That's the way I thought of it at first, and now it's just second nature. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of RAUNIYAR RAJEEV Sent: Friday, September 29, 2000 1:05 PM To: [EMAIL PROTECTED] Subject: Could someone help me ! Hi all, now i DO have a question. i'm reading up about ports used by TCP/UDP protocols but im having trouble visualizing where the source port and destination ports fit in. im thinking that the destination port (suppose on a www, http segment) of 80, would be on the server from which we will download the data right? and we would specify a port (called source port) to which we want the data to come into our machine right? but then how would the www server distinguish between many sessions if their port is always port 80?? another example... suppose a college closes a "napster" port... can't you just log onto the napster server using a different port from your college? hmm.. i really confused. could you somehow help me visualize where these ports are in the network. and who sets them and how destination servers and clients differ etc.. thanks, BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: Napster Question
The list went through this several times already. Blocking ports , , , is useless.. since Beta6, Napster has been able to work on ANY port, INCLUDING 80.. so to kill Napster, you would have to kill all access to http/tcp80.. NOT good. Blocking the IPs is the best and most thorough solution at this time. Also, besides blocking the access to the main Napster sites will block most users, and for those that go around it, there should be a user policy in place. It is not totally your job to govern what the users do and do not do.. the users should also be held responsible. Put a political policy in place, and if it is broken by a user by using something such as opennap, discipline from management will solve this issue. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Hal White Sent: Friday, September 29, 2000 11:55 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: Napster Question Blocking these IP addresses will only block users from accessing the main napster servers and will not block access to other napster servers, such as, opennap, which can be found easily by using the napigator program. The best way to block Napster is to block the ports that the client uses which are ,,,. Don't quote me on these ports because I can't find my documentation at the moment, but I think they are right. Hal From: "Fowler, Joey" [EMAIL PROTECTED] Reply-To: "Fowler, Joey" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: RE: Napster Question Date: Fri, 29 Sep 2000 13:15:19 -0400 If you search the archives it has some info on this, but I just implemented it this morning and it seems to working here. If you are using PIX firewall (or any other) create an access list using the outbound and apply commands to block the following addresses: 208.184.216.0 /24 208.178.167.0 /24 208.178.163.61 208.184.175.130 208.184.175.131 208.184.175.132 208.184.175.134 208.49.239.242 208.49.239.247 208.49.239.248 People will start wandering by your desk asking if you've ever heard a program called Napster. I personally like to dumb. Joey -Original Message- From: Tom Pruneau [mailto:[EMAIL PROTECTED]] Sent: Friday, September 29, 2000 12:29 PM To: [EMAIL PROTECTED] Subject: Napster Question Greetings Group Does anyone know what ports Napster usies for handshaking? Inbound, outbound port number? What would it take to block Napster? Thanks Tom Pruneau Trainer Network Operations GENUITY 3 Van de Graff Drive Burlington Ma. 01803 24 Hr. Network Operations Center 800-436-8489 If you need to get a hold of me my hours are 7AM-3PM ET Mon-Fri --- This email is composed of 82% post consumer recycled data bits --- "Once in a while you get shown the light in the strangest of places if you look at it right" **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] _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.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] BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: TTY Lines
Simplest way to do this would be the following (note this isn't tested, but it should work: Since not setting a password for telnet disables telnet, simply try the following: en # conf t (conf)# line 0 4 (conf-line)# no password (conf-line)# end # So theoretically, to only allow 1 tty line, en # conf t (conf)# line 0 0 (conf-line)# password abcdefg (conf-line)# line 1 4 (conf-line)# no password (conf-line)# end # Like I said, this is untested, but should work fine (in theory). If anyone has time to test this out in a lab environment, let me know if anything works properly, or incorrectly. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Patrick Stiever Sent: Thursday, September 28, 2000 12:42 PM To: '[EMAIL PROTECTED]' Subject: TTY Lines Ladies and Gentlemen, Is there a way to shut down a TTY line like you would an ethernet interface? Thanks, Patrick Stiever CCNA Communications Engineer 24 Hour Fitness (760) 918 4459 [EMAIL PROTECTED] BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: CCDA summerization question
This is possibly one of those situations with just a poorly worded question. Now, to nit-pick at the wording.. "The following IP *ADDRESSES*" -- Addresses, not networks, but ADDRESSES.. Now, is this VLSM summarization, in which case "no bits in the 3rd octet" without doing 2 summaries (50% savings on the routing table traffic, but why when you could 172.16/16 for 75% savings). The other possibility, is (I do this occassionally on firewall rules setups) summarizing for an access list. In other words, "What is an IP/mask combination that will match those 4 addresses." The answer would be : 172.16.0.0 = 172.16..0 172.16.64.0 = 172.16.0100.0 172.16.128.0 = 172.16.1000.0 172.16.192.0 = 172.16.1100.0 Remember that the mask in an access-list etc, does NOT need to be contiguous bits.. therefor : 172.16.0.0 0.0.192.255 (172.16.xx00.x) works fine for those specific addresses (and added feature, doesn't include anything else). Just another point of view to look at this question from. Remember that while writing a Cisco exam, or out in the real world, ASSUME NOTHING. If it does not mention VLSM, don't assume they are talking about VLSM. If possible, check on what the exam says is the "correct" answer, and try to reverse-engineer their thinking to see what topic they are covering. Also, check the erratta for the exam to make sure you are looking at a "correct" answer. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com "John lay" [EMAIL PROTECTED] wrote in message Guys, While studying for the CCDA, I found the following question in one of the exam preparation sites. The following IP addresses can be summaried by which bit of the 3rd octet 172.16.0.0, 172.16.64.0, 172.16.128.0, 172.16.192.0 --- 1st bit, first 2 bit, first 4 bit, last 6 bit I don't think that the following addresses could be summarized on any bit of the 3rd octet. If you have a look to the 3rd octet 172.16.0.0 --- 172.16..0 172.16.64.0 --- 172.16.0100.0 172.16.128.0--- 172.16.1000.0 172.16.192.0--- 172.16.1100.0 Could someone verify this with me guys ? Thanks a lot BEGIN:VCARD VERSION:2.1 N:Corness;Trevor FN:Trevor Corness ORG:BMS Communications;DataCom TITLE:Network Systems Engineer TEL;PAGER;VOICE:604-631-7867 ADR;WORK:;;2880 Production Way;Burnaby;BC;V5A4T6;Canada LABEL;WORK;ENCODING=QUOTED-PRINTABLE:2880 Production Way=0D=0ABurnaby, BC V5A4T6=0D=0ACanada URL: URL:http://www.bmscom.com EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:2921T155409Z END:VCARD
RE: they want us in England!!
Congratulations, Sam! I myself landed my first real networking job yesterday. I had IBM Canada and BMS Communications fighting over me for 24 hours. IBM took a month to get back to me, I interviewed with BMS Monday and Tuesday.. Tuesday afternoon I had the offer (2 hours after IBM called, but I purposely took my 24hrs to choose). 6 months, and 7 companies interviewed later, I'm a Network Systems Engineer.. a fancy title for a guy that goes on-site for NT, Cisco, Nortel, Unix support, and does some network design along with presentations with our sales team. I start October 2nd. England is a place I would like to go later in my career, possibly 5 years from now, but I'm just kind of starting out here. My family is from back there, and I've always wanted to go see all of England, Ireland, and Scotland.. along with the rest of Europe of course, only seen Barcelona, Spain up until now. Best of luck in the new job, and drop by from time to time to check on us. Regards, Trevor Corness, CCNA MCSE MCP+I Network Systems Engineer, DataCom BMS Communications Ltd. http://www.bmscom.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Sam Fraser Sent: Tuesday, September 19, 2000 4:24 PM To: [EMAIL PROTECTED] Subject: they want us in England!! I got a job!! This is Sam the CCNA with a 946 score and couldn't get even an interview never mind a job! I decided to start looking for jobs in the South of England. Got an interview straight away, ... and, got the job straight away! They were aghast! at my knowledge. I knew I had the job before I left the interview room. You see, experience isn't everything. Global Crossing will not regret taking me on, I will prove my worth!! A BIG THANK YOU to all those from this newsgroup that helped me during my studies. Bye From Sam **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]
