Networking question.

[ingeborgdot]

I am going to be running an NDAS that is ethernet connected. It is capable of transfer speeds of 1000Mbps and my mobod is also. I have a 2wire wireless modem also but I believe that speed of it is only 100Mbps. Will I be losing the 10x speed if this is so?

 

[seepy83]

It depends...as examples:

If your PC and NAS are connected to the same switch, and that is a Gigabit switch, then the two devices can communicate at gigabit speeds.

If your NAS is connected to a gigabit switch, and your PC is connected via 802.11g wireless, then the two devices would communicate at the slower of the speeds (54Mbps for 802.11g).

If both devices are connected to a 100Mbps switch, then they will communicate at 100Mbps.

 

[ingeborgdot]

Ok, I understand the switch has to be at 1000Mbps to communcate at 1000Mbps. My question is on my router (which is also wireless but use the wired). It is a 2wire model. I am sure it is only a 100Mbps router. Will that make it only a 100Mbps connection?

 

[JackMDS]

Why you think that the Router needs to be Giga?

You have a Giga Internet connection?

Your Wireless is new standard that is capable to do Giga too?

Giga functionally is Not x10, it is about x3 to x5 at best.

 

[ingeborgdot]

Right now I am confused. Sorry for the ignorance. If the output from my modem/router is only 100Mbps how would that be able to do 1000Mbps?

It is a modem/router combination from 2wire for my AT&T DSL. Model 1701HG

Ok, help me out. I will set up a diagram.

Incoming DSL into the 2wire(100Mbps capable) ----- out to computer (1000 capable)
Incoming DSL into the 2wire(100Mbps capable) -----out to 1000Mbps switch

from 1000Mbps switch to ---- bluray
from 1000Mbps switch to ---- Denon AV receiver
from 1000Mbps switch to ---- another computer
from 1000Mbps switch to ---- NDAS which is 1000Mbps capable.
As is stated the 2wire is only 100Mbps capable but everything else is 1000Mbps.

 

[xSauronx]

Originally posted by: ingeborgdot
Right now I am confused. Sorry for the ignorance. If the output from my modem/router is only 100Mbps how would that be able to do 1000Mbps?

ok so you have 4 devices on the switch. any traffic between those 4 devices will be at 1gig, because none of that traffic will go through the router....it stays local to the switch and i think this is what you didnt understand. any traffic between devices on a switch doesnt need the router, the switch just moves the traffic between those devices directly, so they can all use gigabit speeds.

if those devices communicate with anything off the switch, that is, something connected directly to the router, then that traffic will move at 100Mbps, because network traffic between two devices can only move as fast as the slowest link. so if your one computer wired to the router talks to things on the switch, the communication has a max speed of 100Mbps.

if you want it all at 1000Mbps, you need to add another giga switch to the giga switch you already have and have everything wired into those switches.

 

[ingeborgdot]

But the signal feeding the switch comes from the dsl router/modem from 2wire. So wouldn't that cut everything I have to 100?

 

[JackMDS]

Why should it cut down local transfer?

The signal that comes form the Internet does not affect local signal.

 

[ingeborgdot]

Because my computer runs through the modem/router. Am I just missing the boat? What does the 100Mbps mean for the 2wire modem?

 

[Madwand1]

The 2wire has a 10/100 switch, which means that the connection between your NDAS and the computer is effectively 100 Mb/s. You should have all the gigabit devices on the same gigabit switch, or linked with only gigabit switches in the path between them.

Can you move the AV connections to the 2wire to free up a gigabit port and use that for the computer?

Alternatively, you could add an inexpensive gigabit switch just in front of the 2wire -- connect it to the 2wire, and the other gigabit switch to that instead of the 2wire.

 

[ingeborgdot]

I am feeling very stupid right now. I am not quite understanding what you mean by placing one in front of the 2wire etc. Is there any place I can find a diagram to see what you are talking about. I seem to grasp it better when I see it. Thanks for your time.
My computer also has dual gig ports. Could that help.

 

[Engineer]

Originally posted by: JackMDS
Why should it cut down local transfer?

The signal that comes form the Internet does not affect local signal.

I think he's stating that the 2wire switch (100Mbps) that is connected to the gigabit switch would be slowing down the entire gigabit switch to 100Mbps range (i.e. the entire gigabit swtich slows down to the slowest speed of any device connected to any port).

From what I can get...

2Wire modem/router with built in 4 port switch at 100Mbps. One port of the built in switch is hooked to a PC. The other port feeds a gigabit switch that has multiple devices on it. Will the 100Mbps ethernet from the 2Wire built in switch slow down the entire gigabit switch? (or at least slow down the PC connected directly to the 2wire router/modem's switch and all other devices connected directly to the GB switch. The loan PC would definitely run at only 100Mbps to the other devices connected on the GB switch).

Correct ingleborgdot?

How many ports does your gigabit swtich have ingleborgdot? If it has free ports, why not connect the single PC that's connected directly to the 2wire modem/router's switch directly to the gigabit switch? That will allow full speed (I think) between the NDAS, the two PC's, the bluray and the AV receiver (all at 1Gbps). The only slowdown is if internet access is required through the 2wire at which the speed would be reduced to 100Mbps (not sure what effect this would have on the local speeds between devices on the GB switch).

Current setup (.... used as spaces since they will not post correctly)

2wire Port #1 ------> PC1
2wire Port #2 ------> GB switch ------> bluray
............................................ |------> PC2
............................................ |------> NDAS
............................................ |------> AV receiver

With that setup, PC1 can only connect to to any of the other 4 devces at a maximum of 100Mbps.

Proposed (I think)...

2wire Port #1 ------> GB Switch -----> bluray
............................................. |-----> PC2
............................................. |-----> NDAS
............................................. |-----> AV receiver
............................................. |-----> PC1

All devices now interconnect at 1Gbps and to the internet at a max speed of 100Mbps.

 

[ingeborgdot]

Ok, now I see what everyone was talking about. Put a gig switch right after the 2wire. I will have to run another gig switch in the other room because I don't have enough cables going there so it will be like this.

2 wire ----- gig switch ------------- to pc 1
gig switch............... to 2nd gig switch
------------ to bluray
------------- to AV
------------- to pc 2
------------- to NDAS

 

[drebo]

Any computer connected to a 10/100 port will only be able to communicate at 10/100 speeds regardless of what the other device is plugged in to.

However, most consumer NAS units do not have fast enough disk access to saturate a 100mbit connection, so you're probably fine in your current setup.

 

[ingeborgdot]

Take a look at this and see what you think.\\http://www.newegg.com/Product/...2E16817810015&Tpk=ndas

 

[Engineer]

Originally posted by: drebo
Any computer connected to a 10/100 port will only be able to communicate at 10/100 speeds regardless of what the other device is plugged in to.

However, most consumer NAS units do not have fast enough disk access to saturate a 100mbit connection, so you're probably fine in your current setup.

So you're saying that if the 2wire modem/router (which runs at 100Mbps) is connected to the Gbit switch, all items connected to the Gbit switch will fall back to 100Mbps, even if they aren't communicating with the 2wire modem/router? If that's the case, the OP has no need to change the "current" setup already running.

I'm not sure that's the case though. I remember hooking 10Mbps items to 100Mbps switches and the only items that ran at 10Mbps were items talking to the 10Mbps items. Everything else ran at 100Mbps.

 

[Madwand1]

Originally posted by: Engineer
So you're saying that if the 2wire modem/router (which runs at 100Mbps) is connected to the Gbit switch, all items connected to the Gbit switch will fall back to 100Mbps, even if they aren't communicating with the 2wire modem/router?

No, that's a myth.

 

[drebo]

Originally posted by: Engineer
So you're saying that if the 2wire modem/router (which runs at 100Mbps) is connected to the Gbit switch, all items connected to the Gbit switch will fall back to 100Mbps, even if they aren't communicating with the 2wire modem/router? If that's the case, the OP has no need to change the "current" setup already running.

No, that's not what I said at all.

What I said was that any device connected to a 10/100 port will only be able to communicate at 10/100 speeds. What that means is that because your computer is plugged in to a 10/100 port, even though the device trying to access it is plugged in to a gigabit port, traffic between the two will only be at 10/100 speeds.

Devices on your gigabit switch, however, will be talking at gigabit speeds when talking to each other. But, because your computer is on the 10/100 switch, when any of those devices communicates with it, the speed will be 10/100, because the traffic does need to pass through the 10/100 switch on the 2wire modem.

If, however, all five devices were plugged in to gigabit switches which were directly connected (i.e. did not pass through the 2wire to get to each other), then all five devices would communicate with each other at gigabit speeds.

 

[Engineer]

Originally posted by: drebo

Originally posted by: Engineer
So you're saying that if the 2wire modem/router (which runs at 100Mbps) is connected to the Gbit switch, all items connected to the Gbit switch will fall back to 100Mbps, even if they aren't communicating with the 2wire modem/router? If that's the case, the OP has no need to change the "current" setup already running.

No, that's not what I said at all.

What I said was that any device connected to a 10/100 port will only be able to communicate at 10/100 speeds. What that means is that because your computer is plugged in to a 10/100 port, even though the device trying to access it is plugged in to a gigabit port, traffic between the two will only be at 10/100 speeds.

Devices on your gigabit switch, however, will be talking at gigabit speeds when talking to each other. But, because your computer is on the 10/100 switch, when any of those devices communicates with it, the speed will be 10/100, because the traffic does need to pass through the 10/100 switch on the 2wire modem.

If, however, all five devices were plugged in to gigabit switches which were directly connected (i.e. did not pass through the 2wire to get to each other), then all five devices would communicate with each other at gigabit speeds.

That's what I thought. It was just the way you worded it...i.e. if the "any device connected to a 10/100 port will only be able to communicate at 10/100 speeds" and if the gigabit switch is connected to a 10/100 port.....but, as I thought, only communications between the swtich and that device are effected. All others are at the rated speed minimum between the two devices.