ISDN Switch
First you need to give the model number for the 3Com. They made a huge range of products, and no two configure exactly the same way. ISDN is a strange choice these days, there are many other tachnologies, that are much cheaper to implement and to use. If you want to explain why you are [...]
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| August 30, 2009 9:19 AM
Ethernet switching, ISDN, Networking
First you need to give the model number for the 3Com. They made a huge range of products, and no two configure exactly the same way. ISDN is a strange choice these days, there are many other tachnologies, that are much cheaper to implement and to use. If you want to explain why you are [...]
View Answer
| August 30, 2009 9:19 AM
Ethernet switching, ISDN, Networking
2 dhcp server 1 dsl router
You configure what is known as Network Address Translation (NAT) on the router. This then translates the IP address of the server, which is likely to be a 10.x.x.x or 192.168.x.x address, to be the IP address it gets from your service provider. It keeps track of which server, and where it is going, so [...]
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| August 30, 2009 9:16 AM
DHCP, DSL, Network Configuration, Network Topology
You configure what is known as Network Address Translation (NAT) on the router. This then translates the IP address of the server, which is likely to be a 10.x.x.x or 192.168.x.x address, to be the IP address it gets from your service provider. It keeps track of which server, and where it is going, so [...]
View Answer
| August 30, 2009 9:16 AM
DHCP, DSL, Network Configuration, Network Topology
what is this cli response “&&”
Did you ever figure this out? Would be good to know
View Answer
| August 30, 2009 4:00 AM
CLI, Firewalls, IP address, Juniper
Did you ever figure this out? Would be good to know
View Answer
| August 30, 2009 4:00 AM
CLI, Firewalls, IP address, Juniper
Prefered book for CCNP Switching
For reference I use the Cisco Press – Building Cisco Multilayer Switched Networks book as this covers just about everything. It is <b>the</b> text book for the subject working towards the CCNP. http://www.amazon.com/Cisco-Switching-Certification-Guide-Career/dp/1587200007
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| August 30, 2009 3:42 AM
CCNP, IT Books, Networking, Networking certifications, Networking in 2010
For reference I use the Cisco Press – Building Cisco Multilayer Switched Networks book as this covers just about everything. It is <b>the</b> text book for the subject working towards the CCNP. http://www.amazon.com/Cisco-Switching-Certification-Guide-Career/dp/1587200007
View Answer
| August 30, 2009 3:42 AM
CCNP, IT Books, Networking, Networking certifications, Networking in 2010
Network infrastructure maps
I maintain WAN diagrams and try to update them when any changes occur or review quarterly. The diagrams are posted on an internal IT team resource web page for locations to use as needed for troubleshooting or discussion on network services. The diagrams are also used for audits. I keep a large format print of [...]
View Answer
| August 30, 2009 3:41 AM
Network infrastructure, Network Topology, Network troubleshooting
I maintain WAN diagrams and try to update them when any changes occur or review quarterly. The diagrams are posted on an internal IT team resource web page for locations to use as needed for troubleshooting or discussion on network services. The diagrams are also used for audits. I keep a large format print of [...]
View Answer
| August 30, 2009 3:41 AM
Network infrastructure, Network Topology, Network troubleshooting
Network Diagram and Documentation
Check out the <a href=”http://www.netscantools.com/spmapmain.html”>Switch Port Mapping Tool</a> from NetScanTools. This question has also been asked before on this site so you should be able to search for <a href=”http://itknowledgeexchange.techtarget.com/itanswers?s=automated+network+diagram&searchtype=IT+Answers”>previous answers here</a>. Another good tool if the switches are Cisco is the Cisco Network Assistant tool. You can get that on the Cisco website. You [...]
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| August 30, 2009 3:39 AM
Network Diagram, Network documentation
Check out the <a href=”http://www.netscantools.com/spmapmain.html”>Switch Port Mapping Tool</a> from NetScanTools. This question has also been asked before on this site so you should be able to search for <a href=”http://itknowledgeexchange.techtarget.com/itanswers?s=automated+network+diagram&searchtype=IT+Answers”>previous answers here</a>. Another good tool if the switches are Cisco is the Cisco Network Assistant tool. You can get that on the Cisco website. You [...]
View Answer
| August 30, 2009 3:39 AM
Network Diagram, Network documentation
Is an associates in Computer Networking + CCNA cert going to get me a job?
Yes, a CCNA will go a long way to getting you an entry level or part time job. It also helps to have some experience. Bluntly speaking, the CCNA on its own will not get you a job. You will need to demonstrate experience, either as a volunteer, or as an intern, or something similar. [...]
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| August 30, 2009 3:36 AM
CCIE, CCNA, CCNP, CompTIA, computer networking, Network+, Networking certifications, VoIP
Yes, a CCNA will go a long way to getting you an entry level or part time job. It also helps to have some experience. Bluntly speaking, the CCNA on its own will not get you a job. You will need to demonstrate experience, either as a volunteer, or as an intern, or something similar. [...]
View Answer
| August 30, 2009 3:36 AM
CCIE, CCNA, CCNP, CompTIA, computer networking, Network+, Networking certifications, VoIP
ip addressing and subnetting…
What you need to do is pick a internal IP range and stick to it. 10.0.0.0/8 (255.0.0.0) 172.16.0.0/12 (255.240.0.0) 192.168.0.0/16 (255.255.0.0) check out WIKIPEDIA on the subject. http://en.wikipedia.org/wiki/Private_network Then you will need think about DNS / HOST etc. Take a look here before you get started: http://compnetworking.about.com/od/workingwithipaddresses/l/aa042900a.htm
View Answer
| August 30, 2009 3:27 AM
Calculating and understanding subnetting, IP addressing, Subnetting
What you need to do is pick a internal IP range and stick to it. 10.0.0.0/8 (255.0.0.0) 172.16.0.0/12 (255.240.0.0) 192.168.0.0/16 (255.255.0.0) check out WIKIPEDIA on the subject. http://en.wikipedia.org/wiki/Private_network Then you will need think about DNS / HOST etc. Take a look here before you get started: http://compnetworking.about.com/od/workingwithipaddresses/l/aa042900a.htm
View Answer
| August 30, 2009 3:27 AM
Calculating and understanding subnetting, IP addressing, Subnetting
Connection fine on internet, but slow (even timesout) on LAN
Is the browser set to use a proxy server? Check if it has the correct settings.
View Answer
| August 30, 2009 2:59 AM
Apache, Connection timeout, LAN, NetLimiter, Network connectivity, PC1
Is the browser set to use a proxy server? Check if it has the correct settings.
View Answer
| August 30, 2009 2:59 AM
Apache, Connection timeout, LAN, NetLimiter, Network connectivity, PC1
Canobeam free space optics configuration for connection to Cisco Catalyst 3560
Cisco Switch “errdisable” and Wireless Link implementation Issue Problem: Wireless solutions can experience momentary loss of link due to precipitation bursts, birds, etc. that may last only a fraction of a second. Ordinarily, this is not a problem as any failed Ethernet frames caught in that moment are just retransmitted. A CRC error may or [...]
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| August 29, 2009 11:07 PM
Canobeam, Cisco Catalyst, Cisco Catalyst 3560
Cisco Switch “errdisable” and Wireless Link implementation Issue Problem: Wireless solutions can experience momentary loss of link due to precipitation bursts, birds, etc. that may last only a fraction of a second. Ordinarily, this is not a problem as any failed Ethernet frames caught in that moment are just retransmitted. A CRC error may or [...]
View Answer
| August 29, 2009 11:07 PM
Canobeam, Cisco Catalyst, Cisco Catalyst 3560
internet layer protocol
Thank you for visiting ITKE. We are happy to help you with solving specific IT questions, but need as much information as possible to do so. Let us know about the problem you are trying to solve, how you are approaching it and what work you’ve done so far, and we can help guide you [...]
View Answer
| May 14, 2013 8:35 PM
Interior Gateway Routing Protocol, Internet Layer Protocol, Routing
Thank you for visiting ITKE. We are happy to help you with solving specific IT questions, but need as much information as possible to do so. Let us know about the problem you are trying to solve, how you are approaching it and what work you’ve done so far, and we can help guide you [...]
View Answer
| May 14, 2013 8:35 PM
Interior Gateway Routing Protocol, Internet Layer Protocol, Routing
higher bit rate
Thank you for visiting ITKE. We are happy to help you with solving specific IT questions, but need as much information as possible to do so. Let us know about the problem you are trying to solve, how you are approaching it and what work you’ve done so far, and we can help guide you [...]
View Answer
| May 13, 2013 7:39 PM
Bandwidth, Bit rate, Networking services
Thank you for visiting ITKE. We are happy to help you with solving specific IT questions, but need as much information as possible to do so. Let us know about the problem you are trying to solve, how you are approaching it and what work you’ve done so far, and we can help guide you [...]
View Answer
| May 13, 2013 7:39 PM
Bandwidth, Bit rate, Networking services
Building an IT networking career with CCNA, Linux skills and an electrical engineering degree
Dear Sir or Madam (I’m guessing Madam given the remark about “raise children” but I’d be happy to be wrong): An EE degree, especially if it’s from a decent school or better, is always worth something, even in today’s economy. Given your other more recent activity, especially if you earn the CCNA (after which I’d [...]
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| August 27, 2009 6:49 PM
Careers in networking, CCNA, Certifications, Cisco certifications, Cisco Certified Network Associate, IT career, IT jobs, Linux, Networking
Dear Sir or Madam (I’m guessing Madam given the remark about “raise children” but I’d be happy to be wrong): An EE degree, especially if it’s from a decent school or better, is always worth something, even in today’s economy. Given your other more recent activity, especially if you earn the CCNA (after which I’d [...]
View Answer
| August 27, 2009 6:49 PM
Careers in networking, CCNA, Certifications, Cisco certifications, Cisco Certified Network Associate, IT career, IT jobs, Linux, Networking
File servers and domain levels
Could you clarify your question a bit? Its very vague as it is asked.
View Answer
| August 27, 2009 4:16 PM
Domain, File Server, File Server Storage Level
Could you clarify your question a bit? Its very vague as it is asked.
View Answer
| August 27, 2009 4:16 PM
Domain, File Server, File Server Storage Level
T1 Distance
Google Search – t1 distance limitation result Line Rate T1 (CSU) 6200 feet 1890 metres I am having a had time finding a good answer for this seemingly simple question. Searching the same phrase above gets me a limit of 665 feet. Weird.
View Answer
| August 27, 2009 4:14 PM
Cable systems, Networking, T-1
Google Search – t1 distance limitation result Line Rate T1 (CSU) 6200 feet 1890 metres I am having a had time finding a good answer for this seemingly simple question. Searching the same phrase above gets me a limit of 665 feet. Weird.
View Answer
| August 27, 2009 4:14 PM
Cable systems, Networking, T-1
FTP over SSL issue
Perhaps I’m not understanding the problem, but this is working as designed (i.e., according to spec). When you open a passive data connection to an FTP server, vanilla or SSLed, you’re telling the remote host to forgo the process of connecting back to *your* machine with the PORT command, as the RFC and STD docs [...]
View Answer
| August 27, 2009 2:57 PM
AIX, AS/400, FTP, FTPS, NAT, SSL, V5R2
Perhaps I’m not understanding the problem, but this is working as designed (i.e., according to spec). When you open a passive data connection to an FTP server, vanilla or SSLed, you’re telling the remote host to forgo the process of connecting back to *your* machine with the PORT command, as the RFC and STD docs [...]
View Answer
| August 27, 2009 2:57 PM
AIX, AS/400, FTP, FTPS, NAT, SSL, V5R2
how does channel length affect patch cord length?
Patch cord length is more than just a minimum number. It is based on the length of the channel also so that combined the channel does not exceed 100m. There is wire management that can help dress in the slack for a patch cord. What is the length of the total cable channel? More than [...]
View Answer
| August 27, 2009 2:14 PM
10/100 base Ethernet switch, CAT 6, CAT 6a, Ethernet switching, Network Configuration, Networking, Patch cords
Patch cord length is more than just a minimum number. It is based on the length of the channel also so that combined the channel does not exceed 100m. There is wire management that can help dress in the slack for a patch cord. What is the length of the total cable channel? More than [...]
View Answer
| August 27, 2009 2:14 PM
10/100 base Ethernet switch, CAT 6, CAT 6a, Ethernet switching, Network Configuration, Networking, Patch cords
How to detect duplicate IP addresses
The best way is to send ARP packets to that IP address. All the machines with same IP will revert with the MAC address. If you are using any security solution block those MAC address or if you are using some tools to manage your asset you can clearly find out which users have the [...]
View Answer
| April 19, 2013 1:04 PM
Duplicate IP addresses, IP address, IP address conflicts, Networking, Routing and switching
The best way is to send ARP packets to that IP address. All the machines with same IP will revert with the MAC address. If you are using any security solution block those MAC address or if you are using some tools to manage your asset you can clearly find out which users have the [...]
View Answer
| April 19, 2013 1:04 PM
Duplicate IP addresses, IP address, IP address conflicts, Networking, Routing and switching
Can’t connect D-Link media converter with Cisco switch 2950
It actually depends on the type of media converter you have. See if you can use a passive media converter rather than an active one. Also, see if suppressing Keep-Alives (no keepalive) on the router helps. -Sudhanshu A media converter HAS to be active, it is converting from copper (RJ45) to Fibre, so it must [...]
View Answer
| August 27, 2009 6:47 AM
Cisco 2960, Cisco switches, Networking, Routing and switching
It actually depends on the type of media converter you have. See if you can use a passive media converter rather than an active one. Also, see if suppressing Keep-Alives (no keepalive) on the router helps. -Sudhanshu A media converter HAS to be active, it is converting from copper (RJ45) to Fibre, so it must [...]
View Answer
| August 27, 2009 6:47 AM
Cisco 2960, Cisco switches, Networking, Routing and switching
Is it possible to access the internet through a wireless repeater?
This is not possible with the Dlink firmware because they did not build that model for that particular purpose, and unfortunately, I don’t know of any third party firmware vendors that support dlink. http://www.sveasoft.com/ is an interesting company if you want to learn more about third party firmware development.
View Answer
| August 26, 2009 11:12 PM
Networking, Wireless Access Points, Wireless networking, Wireless Repeater
This is not possible with the Dlink firmware because they did not build that model for that particular purpose, and unfortunately, I don’t know of any third party firmware vendors that support dlink. http://www.sveasoft.com/ is an interesting company if you want to learn more about third party firmware development.
View Answer
| August 26, 2009 11:12 PM
Networking, Wireless Access Points, Wireless networking, Wireless Repeater
