router : Computer Hardware Buyers’ Glossary

router

A box that goes between your cable modem (or ADSL (Asymmetric Digital Subscriber Line technology) modem) and your LAN (Local Area Network). It usually also acts as a hub. Make sure you find a picture of the rear of the router to make sure it has enough connectors for all the workstations on your LAN. Some routers have only one LAN connector — designed to plug into a hub. Popular brands include NetGear, LinkSys and SMC. Routers offers some firewall protection. They may be configured to monitor browsing end emails and to prepare email reports. NAT (Network Address Translation) keeps hackers from discovering the internal IP (Internet Protocol) addresses of your computers. To the outside world, the router makes your entire LAN looks like one computer doing all the web accesses. DHCP (Dynamic Host Configuration Protocol) support in the router means you don’t manually have to manually assign IP numbers to each of your workstations. VPN (Virtual Private Network) is an advanced feature home users would not need. Configuring a router is quite easy. You use your browser to http://192.168.2.1:88 the internal IP of the router itself which acts as the gateway to all the computers on your LAN. You then talk to a tiny webserver living in the router. Amazingly the router is able to pass through high speed Internet connections with only about a 40 Mhz processor internally.

Most routers have autosensing ports, so it does not matter if you use pass-through or cross-over Ethernet cables. However, it makes the electronics more sensitive. Don’t connect or disconnect router cables with any power on at either end.

Brands

Unfortunately none of the brands offer throughput specifications.

D-LINK: offer a wide range of models. I own a 4-port DLINK DI-604 rev E3 which works much better than my old SMC. It gets much better throughput. I would have bought the 8-port model had I known I would be using machines with two Ethernet cards, or temporarily tying in guest machines. The main problem with it is the cables often wriggle loose. I don’t know if that is the fault of the connectors or the Belden cable ends.
Cisco/Linksys are widely available. PC (Personal Computer) Magazine rated it excellent. They have a web app to figure out which features you need in a wireless router.
Netgear is very easy to configure.
I owned a SMC Barricade router 7004ABR, part 750.5756. SMC documentation is more technical. The SMC manual gave the wrong url to address the router software. You need 192.168.0.1:88 It took a 40 minute wait for technical support to iron out the problem. The firmware upgrade left out the step of unzipping. Further the SMC router slows downloads to about 1/10th the speed of connecting without the router. Further, even when I configured the router to pass through packets on a custom port for Zaep, it refused to do so though it claimed to. It tended to freeze up frequently, and also it often lost its ability to provide DNS (Domain Name Service). I since got rid of it.

You can now get routers that combine in one box: a DSL (Digital Subscriber Loop) modem, a router, a firewall, and a wireless router. Make sure you get a newer G model wireless router. It can handle both the new high speed G devices and the older slower B devices. There are even higher speed I and N models which are not yet standard. Make sure they also support B and G as a fallback.

recommend electronic⇒Linksys E1200 Wireless-N Router

asin

B004T9RR6I

Cisco. Single band, 300 MBps. Supports Wireless-N, -B, -G protocols. Has four × 1000 Mb/sec ports and one USB printer port.

	amazon.cn	amazon.ca
	amazon.de	bestbuy.ca
	amazon.es	newegg.ca
	amazon.fr	tigerdirect.ca
	amazon.it	amazon.com
	amazon.co.uk	newegg.com
	junglee.com	tigerdirect.com
	other stores

Greyed out stores probably do not have the item in stock

recommend electronic⇒Linksys EA2700 App-Enabled N600 Dual-Band Wireless-N Router

asin

B007IL72CI

Gigabit Ethernet connection. 4 ports.

	amazon.cn	amazon.ca
	amazon.de	bestbuy.ca
	amazon.es	newegg.ca
	amazon.fr	tigerdirect.ca
	amazon.it	amazon.com
	amazon.co.uk	newegg.com
	junglee.com	tigerdirect.com
	other stores

Greyed out stores probably do not have the item in stock

recommend electronic⇒Linksys X2000 Wireless-N Router with ADSL2+ Modem

asin

B005HFJFHW

Has only three ports. Handles WiFi b/g/n.

	amazon.cn	amazon.ca
	amazon.de	bestbuy.ca
	amazon.es	newegg.ca
	amazon.fr	tigerdirect.ca
	amazon.it	amazon.com
	amazon.co.uk	newegg.com
	junglee.com	tigerdirect.com
	other stores

Greyed out stores probably do not have the item in stock

recommend electronic⇒Linksys EA3500 App-Enabled N750 Dual-Band Wireless-N Router and USB

asin

B007IL6OR2

Gigabit Ethernet connection. 4 ports. 5G. 300+450Mbps

	amazon.cn	amazon.ca
	amazon.de	bestbuy.ca
	amazon.es	newegg.ca
	amazon.fr	tigerdirect.ca
	amazon.it	amazon.com
	amazon.co.uk	newegg.com
	junglee.com	tigerdirect.com
	other stores

Greyed out stores probably do not have the item in stock

recommend electronic⇒Linksys EA4500 App-Enabled Dual-Band Wireless-N Router and USB

asin

B007IL7AKM

Gigabit Ethernet connection. 4 ports. 450+450Mbps

	amazon.cn	amazon.ca
	amazon.de	bestbuy.ca
	amazon.es	newegg.ca
	amazon.fr	tigerdirect.ca
	amazon.it	amazon.com
	amazon.co.uk	newegg.com
	junglee.com	tigerdirect.com
	other stores

Greyed out stores probably do not have the item in stock

Tips

If you suspect your router is not working, here are some things to try:

See if other computers on your LAN are working. If they are, the router is probably fine. The problem is with your computer.
Power the router off, pause a few seconds, then power it on again.
Power the cable/DSL modem off, pause a few seconds, then power it on again.
Make sure the cables from your computer to the router and from the router to the modem and from the modem to the wall socket are firmly seated.
Log into the router and tell it to renew its DHCP connection the gateway computer owned by the cable company. Your router has firmware in it to make it behave like a miniature webserver. Read the booklet that came with the router how to access it. It will typically be something like http://192.168.0.1/.
Use ipconfig /renew on your console to renew your computer’s DHCP connection to the router.
Shutdown your computer, then power it on again.

Ethernet
firewall
hub
NAT
NAT cracker: autoconfigure a NAT student project
Router based dynamic DNS
switch
wireless LAN

	available on the web at:	http://mindprod.com/bgloss/router.html
	optional Replicator mirror of mindprod.com on local hard disk J:	J:\mindprod\bgloss\router.html
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