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Functioning of router

What is router and how it routes the data?

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Everything about what a router is can be found here...

http://en.wikipedia.org/wiki/Router


Hope this helps...

Posted on Jan 25, 2009

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Posted on Jan 02, 2017

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2 Answers

What is routing loop?


A routing loop is a condition in which a packet is continuously transmitted within a series of routers without ever reaching its intended destination network. A routing loop can occur when two or more routers have routing information that incorrectly indicates that a valid path to an unreachable destination exists.
The loop may be a result of:
Incorrectly configured static routes
Incorrectly configured route redistribution (redistribution is a process of handing the routing information from one routing protocol to another routing protocol and is discussed in CCNP-level courses)
Inconsistent routing tables not being updated due to slow convergence in a changing network
Incorrectly configured or installed discard routes

Jun 07, 2011 | Linksys EZXS55W EtherFast 10/100 5-Port...

Tip

Show Routing Table button will open a chart displaying how data is routed...


Show Routing Table button will open a chart displaying how data is routed through your LAN. Use the example below on how to configure a static routing:

STATIC ROUTING:

192.168.2.2 192.168.1.2
ROUTER C ----------------- ROUTER B ----------------- ROUTER A--------------PUBLIC IP ADDRESS
192.168.3.1 192.168.2.1 192.168.1.1

ROUTER A: Gateway Mode ROUTER C: Router Mode

1STENTRY 1ST ENTRY
DESIP: 192.168.2.0 DES IP: 192.168.2.0
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.2.2
HOP COUNT: 2 HOP COUNT: 3
INTERFACE: LAN INTERFACE: WAN


2NDENTRY 2ND ENTRY
DESIP: 192.168.3.0 DES IP: 192.168.1.0
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.2.2
HOP COUNT: 3 HOP COUNT: 2
INTERFACE: LAN INTERFACE: WAN


*********************************************************************************************************************************************************

ROUTER B: Router Mode


1STENTRY
DESIP: 192.168.1.0 WAN IP: 192.168.1.2
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.1.1
HOP COUNT: 2 DNS: DNS of 1st router
INTERFACE: WAN


2NDENTRY
DESIP: 192.168.3.0
SM: 24
DG: 192.168.2.2
HOP COUNT: 2
INTERFACE: LAN


*********************************************************************************************************************************************************
1stRouter must be set on Gateway Mode
2ndRouter must be on Router Mode
Use Static Routing
Select Entry
Destination IP = IP Subnet of the 1st Router
Subnet Mask = Subnet Mask of the 1st Router
Default Gateway = Interface IP
Hop Count = 1 + n
Interface= Connection to the 1st Router

Hope this help everyone.

on Apr 22, 2010 | Computers & Internet

Tip

HOW TO CONFIGURE STATIC ROUTING ON LINKSYS ROUTER


Show Routing Table button will open a chart displaying how data is routed through your LAN. Use the example below on how to configure a static routing:

STATIC ROUTING:

192.168.2.2 192.168.1.2
ROUTER C ----------------- ROUTER B ----------------- ROUTER A--------------PUBLIC IP ADDRESS
192.168.3.1 192.168.2.1 192.168.1.1

ROUTER A: Gateway Mode ROUTER C: Router Mode

1STENTRY 1ST ENTRY
DESIP: 192.168.2.0 DES IP: 192.168.2.0
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.2.2
HOP COUNT: 2 HOP COUNT: 3
INTERFACE: LAN INTERFACE: WAN


2NDENTRY 2ND ENTRY
DESIP: 192.168.3.0 DES IP: 192.168.1.0
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.2.2
HOP COUNT: 3 HOP COUNT: 2
INTERFACE: LAN INTERFACE: WAN


*********************************************************************************************************************************************************

ROUTER B: Router Mode


1STENTRY
DESIP: 192.168.1.0 WAN IP: 192.168.1.2
SM: 24 SM: 24
DG: 192.168.1.2 DG: 192.168.1.1
HOP COUNT: 2 DNS: DNS of 1st router
INTERFACE: WAN


2NDENTRY
DESIP: 192.168.3.0
SM: 24
DG: 192.168.2.2
HOP COUNT: 2
INTERFACE: LAN


*********************************************************************************************************************************************************
1stRouter must be set on Gateway Mode
2ndRouter must be on Router Mode
Use Static Routing
Select Entry
Destination IP = IP Subnet of the 1st Router
Subnet Mask = Subnet Mask of the 1st Router
Default Gateway = Interface IP
Hop Count = 1 + n
Interface= Connection to the 1st Router

Hope this help everyone.

on Jan 26, 2010 | Linksys Wireless-G WRT54G Router

1 Answer

I need to reset my router, the model is IT-WL540 please assist ASAP


On the back of the router is a reset button. This button has two (2 functions:

1. Reboot. When pressed and released, the Wireless Router will reboot (restart).

2. Clear All Data. This button can also be used to clear ALL Data and restore ALL settings to the factory default values:

To Clear ALL Data and restore the factory default values:

1. Power Off.
2. Hold the Reset Button down while you Power On.
3. Keep holding the Reset Button for a few seconds, until the RED LED has flashed TWICE.
4. Release the Reset Button. The Wireless Router is now using the Factory default values.

Hope that helps!

Jan 11, 2010 | Innocom Technology WIRELES ROUT|INNOCOM...

1 Answer

Hello wots an router somthing to do withs to internet and how do reinstall it


To understand what a router does, you need to know a little bit about how the Internet works. The Internet, the huge world-wide computer network that we surf the World Wide Web on, uses the TCP/IP networking protocol. Data sent over a TCP/IP network is broken down into chunks called "packets", and in order for these packets to get where they need to go on the Internet, something is needed to route them to their destinations (hence the name router). The many networks that make up the Internet are connected to each other by routers, and the routers determine what packets go where. Routers are level 3 devices on the OSI model, which means that they function at the network layer. The OSI model has 7 levels, and each one represents a function when it comes to data communication between two or more computers on a computer network. To understand what I'm talking about in the next paragraph, you need to know about the OSI model and what layer the router represents.

When the average computer user thinks of a router, they probably think of the kind that you can purchase at your local computer store, as opposed to the big ones that route packets on the Internet. That smaller kind of router allows you to share an Internet connection with multiple computers without having to use a computer that acts as a "gateway". If you have a computer network at home and the center of it is a hub or a switch, you need to use a computer that acts as a gateway ("host" computer), as hubs and switches cannot do what a router does (hubs and switches are two other devices that you can purchase at your local computer store to create a network between two or more computers). A router can "intelligently" route TCP/IP packets to IP addresses (unique identifiers on a TCP/IP network) at layer 3, while a hub is just a dumb layer 1 device that sends out packets to all of the computers attached to it, regardless of who sent them out and who they're intended for. A switch is a layer 2 device that routes Ethernet frames by MAC address; Ethernet is a networking standard that home networks are based on, a frame is the Ethernet equivalent of a TCP/IP packet (chunk of data), and a MAC address is a computer's unique identifier at layer 2 (datalink) on an Ethernet network. Although a switch is "smarter" than a hub, it still can't do what a router does. The functions that a router performs are necessary for communication between the computers on your network and computers on other networks on the Internet at the network layer (TCP/IP). Probably the most important thing that a router does is perform NAT, which stands for Network Address Translation. NAT is a technology that allows computers on a network behind an Internet connection to communicate with computers outside the network; to the rest of the Internet the network is a single IP address (the one your ISP gave you), and NAT allows for incoming and outgoing connections between the computers on the network who have their own "internal" IP addresses and the computers outside the network who see only the ISP-assigned IP address. A "gateway" computer using Internet connection sharing software like the kind that Windows comes with performs the same functions as a hardware router, but there are some disadvantages that come with using that setup, like how all of the computers on the network lose Internet access if the gateway computer is offline. If you want to share an Internet connection between two or more computers in your home, a hardware router is the best thing to get for it.

Dec 04, 2009 | Belkin Wireless G Plus MIMO (F5D9230-4)...

3 Answers

Real diffrerent between Router & L3 switch


Following links might be helpful to you:

http://web.ivy.net/carton/rant/l3-switch/switch-l3intro.html

http://compnetworking.about.com/od/hardwarenetworkgear/f/layer3switches.htm

http://www.e-tutes.com/lesson8/networking_fundamentals_lesson8_3.htm

http://nixcraft.com/computer-networking-internet-broadband/454-difference-between-layer-3-switch-router.html

Thanks for contacting Fixya.

Mar 24, 2009 | Cisco Catalyst 3550-24 24-Port Ethernet...

2 Answers

Internet Intermittent Drop Out


To isolate the problem beter connect your wireless router directly to the modem and configure it, check if you are able to go online properly so that you can figure out the problem if your wireless router is not working properly, try upgrading the latest firmware and reset the router and reconfigure the router and that will fix your problem...

Oct 22, 2008 | Linksys Wireless-G WRT54G Router

1 Answer

Wi Fi fine, ISP fine, no internet via LAN connection though.


Make sure your firewall is not blocking your ability to go to websites. I saw this the other day, somehow the users firewall was set to block all internet traffic out of the computer.

Jan 21, 2008 | NetGear DG834G Router

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