These hub/ routers combine the functions of a hub and a router all in one. These routers are fairly expensive in price and may be able to purchase one on sale if you have an electronics/computer store in your area.
There are three major parts of the router that can be upgraded:DRAM memory, Flash Memory, and the IOS operating system that runs on it.DRAM and Flash can each be a maximum of 16 MB (try ebaying for cisco 2500 flash or memory), and IOS images can be downloaded from Cisco if you have a valid Cisco service contract.
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It is the operating system that runs on the Cisco switch or router that manages all the functions of the device.
whenever you log into your cisco router....
Some recommended books about Cisco routers are: Cisco Router Configuration, Cisco Routers For The Desperate, Cisco Routers for IP Router, Cisco CCNA Routing and Switching.
Inside the router's chassis.
HDLC
The Cisco 2801 2-Port 10/100 Wired Router was released in the year 2004. You can find the Cisco 2801 router for sale used on eBay starting at $485.00.
Cisco stopped making the 2500 series routers on August 3rd 2012. This is the date, the month and the year that Cisco stopped making the 2500 series routers.
It routes things... lol If you have a cable internet connection for instance, the cable company gives you a cable modem that connects to the cable jack in the wall. To split this signal amongst multiple computers you need a router. The router plugs right into the modem and the computers plug into the router. The router then will devide the internet signal between the computers.
If you are looking for the best quality and inexpensive cisco linksys router I would recommend the Cisco Linksys E2500 Advanced Dual-Band Wireless-N Router, because of its one hundred dollar price tag and the review it earned on pcmag.com!
The Cisco 2801 Integrated Services Router is no longer manufactured by Cisco, however, it is still available form specialist network stores such as Digital Devices. The router can also be purchased from Amazon.