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Setup gigabit home network using 100mbps Router but Gigabit switches

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  • Routers
  • Computers
  • Networking
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Last response: in Networking
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July 9, 2008 2:57:29 AM

Hi,

1) I want to setup my home network with gigabit speeds (I have gigabit lan on all computers) so that I can have fast file transfers.
2) But I do not wish to invest in a DRAFT-N router (all gigabit routers I've found so far have wireless draft N -> expensive).
3) I do need wireless connectivity a/b/g standards are fine for now.

I have dsl internet thorugh ATT/SBC

Can I just connect the wireless router(a/b/g) to the dsl modem and then connect 1 gigabit switch to one of routers lan ports. All my wired computers can go through this gigabit switch? Will I attain gigabit transfer speeds and still have the internet work?

Thanks

More about : setup gigabit home network 100mbps router gigabit switches

July 9, 2008 10:39:20 AM

Yes. - Short answer.

Long Answer:

PC
PC
PC - Gigabit Switch - Router - Modem - Internet
PC
PC

If you have any wireless clients obviously they will be constrained by 54mb anyway so the fact the router isnt on 1gb doesnt really matter.

I use:
http://www.netgear.co.uk/rangemaxnext_wirelessrouters_w...
as well as a 10/100/1000 Switch, this means the wireless clients can stream @ upto 300mb and the gigabit line to the server can support that no problem...
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July 9, 2008 5:37:32 PM

sounds perfect. thanks!
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July 13, 2008 12:38:01 AM

I am not sure I agree with that. If you are routing your DSL through the router first which is standard 10/100 mps than through Gigabit switch you are creating a bottleneck through the router. Your switch maybe showing 1 gbs to the computers but it is slowing to 100 mps through the internet connection.
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October 21, 2008 6:09:27 PM

It doesn't matter that the router is only rated for 10/100 because i doubt that his DSL is capable of 10mbs let alone 100mbs, so theres no real bottleneck there. The gigabit connections will only really help with transfers speeds between computers on the local network where they can readily exceed the 100mbs cap.
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October 22, 2008 6:03:32 PM

RaisinKain....
Computer to computer will be 1Gbs
Computer to internet will be max 100Mbs from switch to router and probably max 10Mbs router to modem and internet.
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October 23, 2008 3:19:26 PM

@RaisinKain:

That's like saying you disagree with his ISP for "only" giving him sub 100mbps speeds on his internet connection ;) 
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July 1, 2009 3:50:43 AM

this isn't working for me. i have it setup like the above diagram. the 100mbit wireless router is assigning the ip's, not my gigabit switch (of course right?). it seems that data transfer is stepping down to 100mbit btwn PCs, going through the router. how do i make it bypass? also, when one of the PCs is not authenticated with the WEP on the wireless, it can't talk to the others at all.
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July 1, 2009 1:37:55 PM

Are all the pcs gigabit? If not that is why. Anytime you transfer to or from a 100Mbit pc the speed will drop to max 100Mbit.
If a pc is not authenticated it will not have network access.
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Anonymous
November 28, 2009 5:56:14 PM

Here is how my network is laid out. I think it is exactly what you're looking for, except I have some additional hardware installed. Heres the layout
I assume your set up will involve two routers or a 100Mbps router and a 1000Mbps switch/hub.

1)Cable/DSL router
2)Connect a cable to any port on the DSL/Cable Router
3)Take the gigabit router and plug the cable from step to into the WAN port
4)Determine the IP address the gigabit router receives from the Cable/DSL router, log into the Cable/DSL router and assign that IP address to the DMZ
5)Plug any additional gigabit hardware (hubs/switches) into the Gigabit router

What this does essentially, is sets up two networks. The first network being your connection to the Internet, only serves one "client" device, the gigabit router.

By adding it to the DMZ, you bypass any port forwarding needed on the router provided by your ISP. At this point, any port forwarding that would need to be configured would be on the gigabit router itself.

If both routers have wireless modules, you would want to disable the wireless module on the router provided by the ISP. Users that connect to the gigabit router would be able to see clients connected to the ISP router, but the clients on the ISP router would not see the clients on the gigabit router, which will cause frustration and headaches trying share data.


If using a 1000Mbps switch instead of a second router, just ignore the stuff about the WAN port and DMZ. Adding a switch is a fairly simple process and will allow anything that is plugged into the switch to function properly at 1000Mbps, assuming the clients drivers and settings are configured properly. Any clients connected to the ISP router would be limited by 100Mbps, or by wireless protocol a/b/g, depending on the clients connection.

I hope this was helpful.
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December 9, 2009 8:25:14 AM

Hi

I want just the same setup as noted in the initial post. But I have some more questions:

I want attach a Video/File-Server with Gigabit speed. I have some PCs with Gigabit and some streaming clients with 10/100Mb/s. I want to attach all to a (unmanaged) Gigabit switch, which sits behind a standard 10/100+WLAN+DSL Router. It is clear that the router, specifically DSL, is a bottleneck when accessing the internet.

But can I transfer big files between two PCs that have both Gigabit-LAN via the switch? Or would then go some traffic through the router which would then again be a bottleneck?

Also from the answers above: If there is one 10/100 Mbps device on the switch, will it force the _whole_ "bus" to that speed? Or would it be possible, that some devices communicate at max 1000Mbps and some at max 100Mbps at the same time ?

best, Sebastian
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February 18, 2010 4:24:08 PM

Netgear WNDR3700 has 5 gig ports (4 LAN + 1 WAN) and does ~500mbit WAN<->LAN NAT/SPI

Also, will soon have open wrt support which is Linux and will give it future upgradability since the linux port will support anything linux can do. It has 64MB of ram and a 680mhz mips cpu, so it'll be quick enough for quite a while. It should be A LOT faster as a generic IPv6 firewall than an IPv4 NAT, since it doesn't have to do table look ups for NAT connection states.
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February 19, 2010 3:07:59 AM

I am having the same problem. I want to get gigabit network between file/print server and my main. I have gigabit nics and cat 5 cables to a cisco 5 port gigabit switch. The dsl is connected to the switch. The connections on my main and my file/print server only connect at 100 Mbps. I have tried to go in and manually select 1000Mbps on both comps but it just restarts the cards and they connect back at 100Mbps. uggh!!! Why won't the switch connect at 1Gbps???
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February 19, 2010 3:29:24 AM

rhicks20 said:
I am having the same problem. I want to get gigabit network between file/print server and my main. I have gigabit nics and cat 5 cables to a cisco 5 port gigabit switch. The dsl is connected to the switch. The connections on my main and my file/print server only connect at 100 Mbps. I have tried to go in and manually select 1000Mbps on both comps but it just restarts the cards and they connect back at 100Mbps. uggh!!! Why won't the switch connect at 1Gbps???


Well actually it must be CAT5e minimum, CAT5 won't work. (well it *might* work, but it's strongly discouraged and at best only for very short runs). CAT5e or CAT6 are your best choices.
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February 19, 2010 3:45:30 AM

We're only talking about 10-15 ft max. They are in the same room.
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February 19, 2010 3:52:33 AM

rhicks20 said:
We're only talking about 10-15 ft max. They are in the same room.


Distance won't matter if you are running CAT5 (100 MHz), as CAT6 (truly called CAT6a) was designed for faster throughput in terms of frequency (500-550 MHz) for gigabit transfer speeds. CAT5e comes in at 350 MHz, which is sustainable for 1000MBps in theory, but CAT6 was made with gigabit in mind. There is even CAT7a, 1000 MHz, but we won't see that for a while. Go to monoprice.com and pick up some inexpensive CAT6 for your setup.
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February 19, 2010 4:10:56 AM

rhicks20 said:
We're only talking about 10-15 ft max. They are in the same room.


Heck, grab a piece of CAT6 and see what happens. Worth a shot. You'll be kickin' yourself later if you find out that's all it was.
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February 19, 2010 4:27:07 AM

Ok, I'll hit the stores tomorrow and pick up a few pieces and see what happens.

Thx a bunch!!
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February 20, 2010 12:40:15 AM

Changed cables and it still connects as 100 Mbps.....not sure what to do ....
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February 21, 2010 3:53:09 PM

Cat7 ftw. That's what I'll be using when I build a house.
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March 14, 2010 1:55:24 PM

If the 100mpbs router is the dhcp server, would that limit the rest of my network speed (setup: router lan to gigabit switch lan to gigabit computers lan) to 100mpbs?
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July 17, 2010 4:38:02 AM

rhicks20 said:
Changed cables and it still connects as 100 Mbps.....not sure what to do ....


My setups been working ever since i made that post. I even have cat5 cables mixed in there. For some time I had the same problem as you. Its been a while, but I think I ended up reinstalling NIC drivers. Maybe try changing the switch brand. I have a mixture of Airlink and Dlink switches and a Lynksis router.

slowfiosrouter said:
If the 100mpbs router is the dhcp server, would that limit the rest of my network speed (setup: router lan to gigabit switch lan to gigabit computers lan) to 100mpbs?


It should not. My 100mbps router is the dhcp and my gigabit routers(edit: I mean switches) are working as expected.

Ofcourse make sure all the computers are connected to the switch and not the router. Only thing connected to the router should be the modem and the switch
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July 23, 2010 5:21:55 PM

If you are transferring files between computers, to and from hard drives, 7200rpm drives will not be able to transfer faster than 100mbps. Some might be able to burst read and write faster than 100mbps but there is no way it can sustain it.

if you had some WD velociraptor drives or seagate cheeta drives in a stripped array of some sort or a high quality ssd hard drives, you might be able to sustain a read/write scenario past 100mbps. It is going to be the write speeds of the hard drive that will be the killer... note that both the sending and receiving computers would need these specialty hard drives.

since harddrives generally read faster, gigabit home networks are most beneficial when you have a media server that you save videos onto, and stream it to another computer, or media extender, as it will not actually be writing to the non-server computer's hard drive (it may get page filed, but that will be your OS choice).

its also may be beneficial if you say perhaps, you had several hard drives on a home server, and several computers were accessing the different drives (but not the same drive) on the server, then the connection between your server and your switch will not be (as) saturated.
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July 28, 2010 4:12:08 PM

eyekanspele said:
If you are transferring files between computers, to and from hard drives, 7200rpm drives will not be able to transfer faster than 100mbps. Some might be able to burst read and write faster than 100mbps but there is no way it can sustain it.

if you had some WD velociraptor drives or seagate cheeta drives in a stripped array of some sort or a high quality ssd hard drives, you might be able to sustain a read/write scenario past 100mbps. It is going to be the write speeds of the hard drive that will be the killer... note that both the sending and receiving computers would need these specialty hard drives.

since harddrives generally read faster, gigabit home networks are most beneficial when you have a media server that you save videos onto, and stream it to another computer, or media extender, as it will not actually be writing to the non-server computer's hard drive (it may get page filed, but that will be your OS choice).

its also may be beneficial if you say perhaps, you had several hard drives on a home server, and several computers were accessing the different drives (but not the same drive) on the server, then the connection between your server and your switch will not be (as) saturated.



Believe me, 100mbps gets saturated in a jiffy with a single 5400rpm drive. You don't even need a 7200rpm. For example my 2TB 5400 rpm drive has Sustained avg read speed of 85MBps. 85MBps = 680mbps. I am guessing you are confused between mbps and MBps.

1 MBps = 8mbps
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August 31, 2011 12:22:04 AM

From what I've heard, you can "statically assign" private IP addresses to the machines on the switch side of the LAN, they should be able to transfer at theoretical Gig speeds between them. However...once they all have Static assignments that all are valid to talk to each other.....remove the cable from the switch to the router and drag a file between one machine to the other (only going through the switch). They should speed up, because the switch is merely crossing the cable over. An un-managed or "dumb" switch would route traffic through the router thus slowing to 100Mbps. A managed or "smart" switch will drop the IP info and go by MAC address (I think Layer 3) and go from one device to another directly with no need to go through the router. plus the lack of need for the router to manage the IPs (because they are statically assigned) would in theory allow the devices behind the switch to communicate to each other directly with no need for the router. I am actually testing this theory myself after this very discussion with co-workers today! LOL. If I am wrong or this will not work, please jump in on this! Cheers!
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August 31, 2011 10:35:01 PM

Just a side note, but I know a lot of switches will auto-negotiate down to the slowest speed that is plugged in to them. That means that if a Gigabit switch has a single 100MB NIC plugged into it, all traffic through the switch might get throttled back to 100MB.

It might vary between brands, but I think most unmanaged switches will be like that.
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August 31, 2011 10:54:46 PM

Indeed...In my scenario, it would be two machines (each with Gb NICs) with the Gb switch in between. I would assume they should transfer at the theoretical Gig speeds.
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September 18, 2011 8:05:20 PM

SOLUTION You need a GIGABIT/SWITCH ROUTER!!!! to get this to work without headaches...

Assuming all your devices are 1gb ready (all wired btw)

PC (desktop) ip 192.168.200.2 example static ip(s) or let your gigabit router DHCP them
PC (laptop) ip 192.168.200.3
PC (misc) ip 192.168.200.4

Connects to (no bottleneck 1000mbps)
1gb 4 port or more - SWITCH/ROUTER -192.168.200.1 example static ip -

Connects to (bottleneck 100mbps)

(DSL/CABLE MODEM - INTERNET IP auto givin by your ISP or manually if Static)

Connects to

Internet

Otherwise gets some crossover cabling PC to PC and have a pc sharing the internet connection if you only have 2 pcs
Or you can set up the 2nd NIC on your PC to your gb switch and share that with more than one...




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September 18, 2011 11:19:06 PM

nuklep1 said:
Hi,

1) I want to setup my home network with gigabit speeds (I have gigabit lan on all computers) so that I can have fast file transfers.
2) But I do not wish to invest in a DRAFT-N router (all gigabit routers I've found so far have wireless draft N -> expensive).
3) I do need wireless connectivity a/b/g standards are fine for now.

I have dsl internet thorugh ATT/SBC

Can I just connect the wireless router(a/b/g) to the dsl modem and then connect 1 gigabit switch to one of routers lan ports. All my wired computers can go through this gigabit switch? Will I attain gigabit transfer speeds and still have the internet work?

Thanks


the only thing your going to get is max 100Mbps so ya the only thing your going to get out of a N+ router is just more distance and more reliable speed than G
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September 20, 2011 1:52:30 AM

My experiment resulted in 100Mbps speeds because of the router.
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January 25, 2012 5:24:46 PM

nuklep1 said:
Hi,

1) I want to setup my home network with gigabit speeds (I have gigabit lan on all computers) so that I can have fast file transfers.
2) But I do not wish to invest in a DRAFT-N router (all gigabit routers I've found so far have wireless draft N -> expensive).
3) I do need wireless connectivity a/b/g standards are fine for now.

I have dsl internet thorugh ATT/SBC

Can I just connect the wireless router(a/b/g) to the dsl modem and then connect 1 gigabit switch to one of routers lan ports. All my wired computers can go through this gigabit switch? Will I attain gigabit transfer speeds and still have the internet work?

Thanks


Okay, your internet speeds will not exceed 100MBS with any home internet connection I know of in the US, however, the reason a gigibit router is perfered with gigibit switches and cat5e/cat6 cable is this.

Everything passes through the router (every bit, every packet & every pice of data. the IP adddress comes from the router. traffic is monitored by the router.

reading down through this thread bears this out. Asumming all PC's are gigibit able along with all the cables, switches and attached storeage also being gigibit able the bottleneck remains the old 10/100 router.

remember, max speed is the top speed of the slowest component in a connectioon chain. Therefore, if the router ks part of that chain the max speed is 100MBS
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February 18, 2012 1:31:26 AM

jmgrayii said:
Okay, your internet speeds will not exceed 100MBS with any home internet connection I know of in the US, however, the reason a gigibit router is perfered with gigibit switches and cat5e/cat6 cable is this.

Everything passes through the router (every bit, every packet & every pice of data. the IP adddress comes from the router. traffic is monitored by the router.

reading down through this thread bears this out. Asumming all PC's are gigibit able along with all the cables, switches and attached storeage also being gigibit able the bottleneck remains the old 10/100 router.

remember, max speed is the top speed of the slowest component in a connectioon chain. Therefore, if the router ks part of that chain the max speed is 100MBS


Veriozon FioS here is over 153mbps via speedtest, a 10/100 router would definitely be an internet bottleneck for a lot of people in my area
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February 18, 2012 2:04:07 PM

woogieboogie said:
Veriozon FioS here is over 153mbps via speedtest, a 10/100 router would definitely be an internet bottleneck for a lot of people in my area


Excellent Elmiea NY not so lucky as you; we have DSL or Road Runner with RR generally 15MBs. however, NYC dose have those speeds I don't see FIOS being deployed annoyware right now due to cost per residential or business customer.

I will keep FIOS in mind if it ever begins expanding onto new markets again thanks.
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February 18, 2012 4:29:00 PM

jmgrayii said:
Excellent Elmiea NY not so lucky as you; we have DSL or Road Runner with RR generally 15MBs. however, NYC dose have those speeds I don't see FIOS being deployed annoyware right now due to cost per residential or business customer.

I will keep FIOS in mind if it ever begins expanding onto new markets again thanks.


It's $149 / month but worth it when you're sharing one line with a home business and 3 other people.

Comcast is 105mbps and $199 a month, typical Comcast overpricing
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February 18, 2012 8:44:58 PM

This topic has been closed by The_Prophecy
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