Routing

[Srinivas Acharya]

Hi All,
I am really to curious to know how the packet from one PC
is transfered to PC which is loacted in remote locations.
There will be thousands of routers in between those PCs.
How excatly that packet is managed to reach that remote PC.
I know it happens with help of router. But it is very
difficult for each router to know about all routers. Then
how it works?.

Can any body explain me about this?.

Regards,
Srinivas Acharya

 

[Guest]

Hi there

Well, it's not really a Windows question, is it?

The short answer is: it's very complicated

The simple answer (which is not 100% correct but sounds good) is: every
router knows what networks it is connected to and it has a routing table that
tells it which network to send to the packet to get to a "given detination"
network, plus a default rule for which network to send the packet to if
nothing else matches. So really, the router only ever knows of the existence
of other routers it is directly connected to, and they in turn only know
about the routers they are connected to, etc, and the packet eventually works
its way closer and closer to the correct destination.

The reason routers on the Internet are able to work out which of their
connected networks is "the right direction" to send the packet, is because
routing protocols (such as BGP) are used to exchange this information between
them and enable them to build the routing table.

HTH

- Adam

 

[Srinivas Acharya]

Hi,
Thanks for replying.
You mean to say all the routers maintains all the routes ?.

Regards,
Srinivas Acharya

 

[Andrew Morton]

http://www.howstuffworks.com/internet-infrastructure.htm
Or, more specifically,
http://computer.howstuffworks.com/router.htm

You will want a pop-up blocker for that site. Never used to be that
way...:-(

Andrew