What is a hub and spoke network?
Hello, I just want to know what is a hub and spoke network and where it is implemented generally with some examples?

Answer Question   |  April 18, 2013  9:30 AM
Hub and Spoke, Network Configuration, Network Topology, Networks, Routers

Duplicate name exists on the network?
We have one unusual issue in one of our workstation here. Every morning after the PC is idle for a very long time, it will disconnect all of its connection in the Printer, File and exchange servers. We already change the setting to never hibernate, monitor, hard drive always on. Ethernet power save is off. [...]

Answer Question   |  February 22, 2010  3:26 AM
Network administration, Network troubleshooting, Windows Server 2008, Windows XP, Windows XP Professional, Windows XP Professional SP3

layer 2/3 switches
When I am trying to put the default gateway in layer 2 switches with ip default-gateway xxxxx commnd it ok. But If I’m trying to put the default-gateway in 3560(layer 3) switches with ip default-gateway xxxxxxx command its giving me error that invalid command

Answer Question   |  February 16, 2011  7:40 PM
Default gateway problem, Layer 2 switches, Layer 3 switches, Routers, Routing and switching, Switches

The most-watched IT questions this week: Feb. 2, 2010
Tick tock, tick tock. What’s that sound?  The countdown for the Nexus One Challenge. What? You’ve moved on? Well

Answer Question   |  February 2, 2010  3:36 PM
AS/400, Channel, CIO, CRM, Database, DataCenter, DataManagement, Development, Exchange, ITKE, Linux, Lotus Domino, Microsoft Windows, Mobile, Networking, Oracle, SAP, Security, SQL Server, Storage, Virtualization, VoIP

setting up cisco ACS SE
Dear All, I’m trying to install an ACS Solution Engine in My network for access control (AAA). I succeed in setting up authentication using the internal database and that works. now My boss want users to be authenticated through an external database (windows AD). I tried achieving this but kept getting different errors.(like EAP-TLS or [...]

Answer Question   |  February 2, 2010  12:10 PM
Access Control Server, Cisco, cisco ACS, Cisco Secure ACS

layer 3 switches
Dear,       [strong] I have made a lan by network simulator. In this network I have used 5 2960(layer 2) switches and Three 3560(layer 3) switches as a access layer switch. In layer 2 switches I have put the default-gateway so I can easily telnet access to layer 2 switches. But In layer 3 switches when [...]

Answer Question   |  February 5, 2010  1:53 AM
Layer 3 switches, Network hardware, Routing and switching, Switches

What is the difference between ATM and frame relay networks?
Basically, what is the difference between ATM and frame relay networks? Can you give me specific details?

Answer Question   |  March 12, 2012  7:26 PM
ATM, Frame Relay, Frame Relay Networks, Networking, Networking Equipment

How to define a job to a file so when the file is updated the job is submitted
How do I define a job to a file so when the file is updated the job is submitted. The file must first capture all records before the job is submitted. An FTP job will populate the file.

Answer Question   |  July 1, 2011  6:43 PM
FTP, FTP Server, iSeries FTP

Cisco Unified Communications Manager: Max logins per user?
Is there any information out there about the maximum number of logins per user in CUCM? We want to know for extension mobility, NOT the number of login/logout requests (which I believe is 250/min.)

Answer Question   |  February 20, 2010  5:57 PM
Cisco, Cisco Unified Communications Manager, Cisco Unified Communications Manager 6.1, Unified Communications Hardware

DNS Question
It is my understanding that DNS simply maps a domain name into an IP address.  I realize that there is a lot more involved behind the scenes and there is other functionality, and perhaps some of that will explain what I am seeing. If I enter the address http://volokh.com/ into a web browser, it displays [...]

Answer Question   |  February 1, 2010  7:15 AM
DNS, DNS queries

How to divide a T1 line?
How can I divide a T1 line between about 20 clients; ensuring that they each get the same amount of bandwidth? The T1 connects to a Linksys router (WRT160NL) which is connected to a wireless Linksys router (WRT160N). I want to use two or three of these wireless routers; which they would be in different [...]

Answer Question   |  October 17, 2010  4:58 AM
Linksys, Linksys Routers, Network cabling, Routing and switching, T1, T1 line

Hardware and Networking
Hello again, My brother is an engineering graduate in Electronics and communication stream and as he has less interest in electronics he plans to take up hardware and networking.  Is there growth seen in hardware and networking? What are the goals to keep in mind?

Answer Question   |  July 12, 2010  3:18 PM
Careers, IT careers, Networking careers, Routing and switching

linksys voip
how can i reset linksys phone adapter ?

Answer Question   |  February 1, 2010  4:44 AM
Linksys, VoIP

MS-Exchange on a dynamic ip w/ mail mx’d from hosted domain name (and website)
I’m trying to set up ms exchange on a dynamic ip thats configured with my router to use dyndns.org. I’ll call that example.dyndns.org. I have a hosted web and e-mail site not associated with my isp and i’ll call those www.example.com and mail.example.com I already have the mx records from mail.example.com pointed to forward traffic [...]

Answer Question   |  February 1, 2010  4:17 AM
Active Directory, Active Directory DNS setup, DNS, Dynamic IP address, Exchange, Exchange administration

About Networking
Hi all of u! i get a problem in Networking. ahh rite now we are using three pc one is server (conected with Domain) and 2 pc is Client(running Windows xp and conected with Domain) ) and in 3 pc we are using internet also from Wirelss switch. so my main problem is that when [...]

Answer Question   |  February 16, 2011  12:23 PM
Network administration, Network troubleshooting

ip address showing up as a usa address instead of one from overseas
my friend says he’s is in europe and he took his laptop with him, but when we went on skype to chat, i picked up his ip address that was coming from his city and state here in the usa. is that possible, or did he lie and he’s not in europe?

Answer Question   |  February 1, 2010  1:08 AM
IP address, IP addressing

Setting up an LTSP on a network
I am newbie to linux and am in need to set up a LTSP in our network.I got stuck in initial part of it that is the dhcp installation.I installed dhcp in my ubuntu machine and i got error as root@classle-desktop:~# /etc/init.d/dhcp3-server start  * Starting DHCP server dhcpd3                  fail                                                                            * check syslog for diagnostics. option [...]

Answer Question   |  January 29, 2010  5:40 PM
DHCP, Linux, linux networking, Ubuntu

media converter problem
Hi, In setup 1, data can be put through the media converter. I verified by using wireshark installed on a lappie connected to the copper end. but when i connect a 2nd media converter (setup 1b), i cant see the data anymore. I verified by using a line analyzer connected to the fiber end of [...]

Answer Question   |  January 29, 2010  5:17 PM
Fiber optic networking, Image and media files, line analyzer, media converter, Wireshark

increasing wireless range
I have a laptop with wireless networking. I want to use it at a a location which is in the vicinity of a wifi service. However it is just a few yards too far to get a proper signal. Is there something available that I can connect to my laptop that will increase my reception [...]

Answer Question   |  February 1, 2010  4:38 PM
laptop, Range extender, Wifi, Wireless

how to configure web interface in6506e and 4503e switch
Hi all,  i have problem with configure IP http server command in cisco 4503e and 6506e switch.. please tell me how to configure web interface in 6506e and 4503e switch..Is there any problem on IOS  version..

Answer Question   |  January 29, 2010  4:28 PM
Networking