Re: IP Address
- From: joeu2004@xxxxxxxxxxx
- Date: 28 Apr 2005 09:31:29 -0700
I wrote:
> indiana wrote:
> > What does the Default gateway and Subnet mean
> [....]
> If a default gateway is defined, the system can communicate
> with systems in other subnets by forwarding packets to the
> gateway. The gateway might know how to reach the other
> subnets, which might require forwarding the packet to yet
> another gateway, and so on.
>
> (That is somewhat simplified. But it probably suffices for
> your purposes.)
As I said, that was intended to be a simplified explanation.
But two questions might arise immediately.
First, what is a gateway?
A gateway is a system that runs software specifically
designed to do this forwarding operation. In the case of
IP forwarding, usually the gateway is called a router.
Second, what if the "default gateway" IP address is your
own system's IP address?
It means that your system tries to send all packets over
its directly-connected network connection, even if the
packet is being sent to another subnet.
This will work only if there is a gateway on your subnet
that is willing to act as "proxy" for other subnet. It
works exactly as I described earlier, except that your
system is not aware of the existence of the gateway. The
packets are forwarded to other subnets through the "proxy"
gateway.
.
- References:
- IP Address
- From: indiana
- RE: IP Address
- From: Lord_Night
- RE: IP Address
- From: indiana
- IP Address
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