Simple GigaBit question/information

Hi,
I've 2 Pc (with Gigabit NIC) connected to a 4 port Gigabit switch (DLINK
DGS-1005D).
The 4 port Gigabit switch is connected to a classic 10/100 ADSL router
(NetGearDM602P) thru network cable (I'm using all cables CAT-5E).

Each PC has a fixed IP and the "gateway IP" of each one is the ADSL
10/100 router IP (this let's my browse internet without problem)

The question is : Can I "enjoy" the full speed of Gigabit speed when I
transfer files between the 2 PC with my actual network configuration or
do I have to but a Gigabit DSL router too, instead of actual 10/100
ADSL Router? (I've this doubt because on both NIC I've router IP as
gateway...)

Really I did some transfer speed test between the 2 gigabit PC, and
usually I got around 125MBps transfer rate.

I use the router only to connect to the internet, but the gateway IP of
each network card PC is the ADSL router 10/100 IP, so I've some doubts...

Thanks for attention and sorry for bad English.
Have a good day
regards
Matteo

On Thu, 01 May 2008 11:47:19 +0200, Matteo Mantini
<(E-Mail Removed)> wrote:

>Hi,
>I've 2 Pc (with Gigabit NIC) connected to a 4 port Gigabit switch (DLINK
>DGS-1005D).
>The 4 port Gigabit switch is connected to a classic 10/100 ADSL router
>(NetGearDM602P) thru network cable (I'm using all cables CAT-5E).
>
>Each PC has a fixed IP and the "gateway IP" of each one is the ADSL
>10/100 router IP (this let's my browse internet without problem)
>
>The question is : Can I "enjoy" the full speed of Gigabit speed when I
>transfer files between the 2 PC with my actual network configuration or
>do I have to but a Gigabit DSL router too, instead of actual 10/100
>ADSL Router? (I've this doubt because on both NIC I've router IP as
>gateway...)
>
>Really I did some transfer speed test between the 2 gigabit PC, and
>usually I got around 125MBps transfer rate.
>
>I use the router only to connect to the internet, but the gateway IP of
>each network card PC is the ADSL router 10/100 IP, so I've some doubts...
>
>Thanks for attention and sorry for bad English.
>Have a good day
>regards
>Matteo


IF I understand what you are saying correctly, that both PCs are
connected to a gigabit switch, then yes, they will 'benefit' from the
gigabit speeds. It is easy to test, there are a couple of utilities
that will tell you the transfer speed between two computers.

Matteo Mantini wrote:
> Hi,
> I've 2 Pc (with Gigabit NIC) connected to a 4 port Gigabit switch (DLINK
> DGS-1005D).
> The 4 port Gigabit switch is connected to a classic 10/100 ADSL router
> (NetGearDM602P) thru network cable (I'm using all cables CAT-5E).
>
> Each PC has a fixed IP and the "gateway IP" of each one is the ADSL
> 10/100 router IP (this let's my browse internet without problem)
>
> The question is : Can I "enjoy" the full speed of Gigabit speed when I
> transfer files between the 2 PC with my actual network configuration or
> do I have to but a Gigabit DSL router too, instead of actual 10/100
> ADSL Router? (I've this doubt because on both NIC I've router IP as
> gateway...)

The router connection has no bearing on the connection between the two PCs.

When a host needs to connect to another resource (other PC) it applies
the network mask to the source and destination IP addresses, and
compares the two results. If the results are the same (they would be
because your hosts are configured with a common network ID, e.g.:
192.168.1.0), it determines that it doesn't need the services of the
router and forwards the packets to the other PC directly (addressed at
the MAC layer).

Each switch port is also it's own collision domain. One port may be
configured for, and operate at a speed and duplex setting different than
other ports. The two ports involved in your transfer are using Gigabit.
The fact that the port to which the router is connected is FastEthernet
is irrelevant.

>
> Really I did some transfer speed test between the 2 gigabit PC, and
> usually I got around 125MBps transfer rate.

The type of NIC, bus, system(s) capabilities, switch capabilities,
protocol used in the transfer ... are more likely your determining factors.

>
> I use the router only to connect to the internet, but the gateway IP of
> each network card PC is the ADSL router 10/100 IP, so I've some doubts...
>
> Thanks for attention and sorry for bad English.
> Have a good day
> regards
> Matteo

Best Regards,
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