Network Speed Reduction Due To Too Many Switches
Feb 24, 2012
I recently finished setting up my home network, here's the setup, modem > Wireless Router (DIR-655) > 1st Switch (ZyXEL GS105B) > hard wires throughout the house (which got messed up by the previous owner of the house) and from those hard wires, in one room I have an E3000 set as Repeater (DD-WRT) which has 1 desktop connected to it through hardwire then in living room I have another switch (ASUS GX-D1081/V2) for HTPC, TV, PS3
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Jun 27, 2011
I have recently been testing out the Kaillera netplay application thats embedded into a few old console emulators. Now the major problem is the de-sync between clients and I was wondering which is the best to reduce this.Say I have an upload speed of 1.2 Mbps and a download speed of 11.28 Mbps. Obviously, I am capped by my upload speed when it comes to changing how many packets i can send/receive per second because its all one setting and I am usually playing P2P.So, I am not entirely sure how big the packets are that are being sent, I am guesstimating based on what they said on Kaillera website that it is around 200-300 bits.Anyway, with my current upload speed I can transfer at a rate of like 600-800 packets per second depending on packet length.De-sync's happen quite often especially in the higher rom size games like Mario Party because of all the data being transferred. Would it be wiser to increase my setting of pps from 20 packets/sec to 60 packets/sec?
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Feb 27, 2012
I've been trying to find the answer for this for ages. I'm now hoping a network pro can provide it here.I have two Gigabit switches connected by a single Cat 5e cable of length 10 metres. My servers are on one switch, and clients on the other. We don't seem to get good speed on the network, so I am investigating various issues in turn as I come across them.The Question is: Would I achieve faster packet throughput between switches by filling the empty RJ-45 sockets with additional Cat 5e cables, or will it have no more effect than the single cable there at the moment?
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May 3, 2013
I'm experiencing poor udp speed on my sg-200-08. I'm running a nfs share on Ubuntu server 12.04 to a Ubuntu 11.10 client connected through udp protocol . If I use an un managed site com (plastic ****) I get about 50MB/s transfers, with sg-200-08 I can't get over 12/13 MBs transfers.
I've tried to set on both server and client MTU = 1492 and I've changed firmware from 1.0.3.3 to 1.0.5.1 (I've not tested 1.0.6 because of some posts here regarding udp problems).
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Jan 12, 2011
I bought a new laptop today, unfortunately, it doesnt have a Firewire port and i want to use it for video editing.But i figured no problem really, i'll just capture on my desktop that i have been previously using to edit on, using Premiere pro to edit, but HDVsplit to capture, and then transfer the files over to the laptop using a USB or possibly trying to setup a home network.But when transferring files from the desktop onto the laptop via the router using ethernet cables, the speed is about 250 kb/s and when its the other way around, from the laptop to the desktop, the speed is 10 MB/s! I really need to find away to speed this up as the overall files i want to transfer are over 5GB.You can read a bit more about it here: [URL]
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Oct 20, 2011
Ok, so i never had problems with this before until i reformatted my computer. I have used a program called simple port forwarding and i've also manually added the port seeing if theres a difference, but every time i check my port which is 25565 for a minecraft server it says either failed or not open etc.. I checked netstat -an and it showed it was listening to my ip address and port 25565.
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Oct 30, 2012
We currently have the XG1 through XG4 ports on our SG500X switch setup in a LAG with the Cisco 10G-FiberOptics. Everything is working fine,however in the web UI under Port Management->Port Settings the "Port Speed" is listed as Unknown. All other ports report the speed correctly. We have 2 SG500X switches configured this way and both are reporting the same Uknown speed.
Firmware Version (Active Image): 1.2.7.76 Firmware Version (Non-active): 1.2.0.97
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Jan 24, 2011
Every "once in a while" (about a week with my network load), the SG300 crawls to an almost standstill of all IPv4 activity (haven't got IPv6 enabled here yet, so I can't comment wether this applies to IPv6 as well). It seems pure L2 transmissions is not affected, but L3 definitely is (down to 20mbit as opposed to the 600+ rate I usually get).
Soft-rebooting the switch (via the webgui) useful, and the intervals of the crashes seem related to total bytes transmitted, not time. I have jumbo frames enabled, and disabled flow control on on the switch and all hosts.
Firmware Version is 1.0.0.27, md5 1987292110f5657e74308dde30c03dc4 Boot Version is 1.0.0.4 md5 4c9a0b6a9f1346736646d08ab94ae2ac
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Jul 19, 2012
I have a 100mbps internet connection from my ISP but once the connection hits the ASA the download speed gets reduced to 15mbps. My network is setup as follows: ISP Modem ---- Edge Switch ----- ASA --- Internal Cisco Switches
If I plug my computer into an extra port on the Edge Switch I get speeds around 92mbps with normal traffic still going to the ASA. But when I plug into the ASA and internal switches I have speeds of 15mbps.
I have made sure that duplex/speed match on the links. I have done packet captures and within two minutes I do have several dup acks and retransmissions. The retransmissions don't seem to match the dup acks. (The retransmission is not for the dup ack requested so the dup ack keeps being resent)
The only interface error is on the inside interface which includes 700 overruns in a weeks worth of time.I am not using an IPS/IDS. I do have several vpns on it but was not going through a vpn tunnel. I am also using NAT.I am using an ASA 5510 8.2(1)
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Jul 17, 2012
I have connected 2 SG500x switches using an SFP-H10GB-CU1M SFP+ Copper Cable module. Since the port shows as a 10G port, I would expect the speed to show as 10G as well. However, it shows as "Unknown". This doesn't leave me with confidence that it is being recognized properly. The link is working properly, but I haven't run tests to verify if I'm getting full 10G throughput or not. Shouldn't it show 10G as the link speed?
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Jan 29, 2011
I want to setup an home network with a wireless router and use multiple switches for wired connections through out my home. I currently have an Airport extreme hooked up to a cable modem and a leviton gateway hooked up to the Airport. The 2 computers connected to the Leviton are on a windows 7 homegroup and share fine, but won't share or discover any wireless device connected to Airport. My main goal is to have a wireless/wired network with all computers sharing information with each other. I want 2-3 wired switches/gateways with a min of 2 devices connected to each, connected to my wireless router whiich is connected to cable modem.
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Sep 19, 2012
I setup a network to run my business three years ago. It consists of 7 computers, an HP Media Smart server, three Netgear GS 605 v 3, where I connect the computers, router and printers.The server is only used as a file server and runs the backups. However, I also put together an Access database which has a front end on each computer and a back end on the server.Reading data from the database on some machines is terribly slow at times, 30 seconds or more for a response, but other times it is almost as quick as you can type.We are a lot busier now so do I need to upgrade hardware or do I have a problem. For example, my machine is just a Vista machine and writes to server at 60Mbps and reads at 21Mbps, two other Windows 7 machines write at 70Mbps but only read at 3Mbps. If I look at the Status of my Local Area Connection Status, its speed is 100.0 Mbps yet the Netgear states 10/100/1000. I have concluded that I need to change the network cards in the computers, but I don't know if I am correct.
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Jan 31, 2012
2 pcs connected with a TPlink modem/switch. wired connection.One pc running win7 64, other xp sp3. Both home pcs..Used to get about 10mbs transfer speed. ( I know its low, but was more than happy with it as I never use it to transfer large files.But suddenly transfer speed changed to just 8kbps. Its kind of a speed limit activated.I can just browse files and folders but cannot copy at 8kbps.
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Feb 15, 2012
Is there a way to monitor network traffic speeds. Our companies network download speeds seem to start high, but then progressively slows to a near stop.Downloading small documents start out fast and finishes, but I noticed that the speed slows down significantly. This poses a problem when downloading larger files and documentsThe speed start out very high, but then slows to near zero and results in the file failing to complete.What i need is to find out what is causing the speed degradation and or where our bottleneck is. Is this a setting issue with the browser, security, etc.
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Jun 25, 2011
how to increase speed in my network (10 pc)
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Mar 4, 2013
I got a wireless network in my flat On this network is a laptop Pachard Bell EasyNote TK and a self build desktop. Both with Windows 7 I pay for broadbandspeed 50/5 and up to a week ago it was ok.But suddely the broabandspeed on my desktop was only 20/5.I have used all the ad/virus software.I have run wireless.exe on my desktop and here is the report.
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Jun 7, 2012
I have upgraded my network service from 2M to 6M per month last week. But the network speed is not so satisfactory. I could hardly feeling its upgrading.Is there any trustful and accurate method or tool to test the network speed?
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Aug 26, 2011
In my company i got about 50 computers all are in workgroup connected with ASUS Switch. Is there any way to findout on which ip got virus and how do i inrease total network speed .
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May 10, 2012
What ways can i connect the two building networks together(i.e best tools to use) supposing each building has a router. How will i make computer no. 10 accessible by all computers in the network.
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Nov 25, 2012
every devices on my network started having really slow speed. It takes long time for each to navigate thru sites. Normally every device gets around 20-25 MBPS in the network. And i have desktop, laptop, iphone, tablet on the network. I've been trying to fix this for whole day yesterday and today and no luck.how to fix this?.I ran some things from this site and the results are here.
[code]...
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Mar 20, 2011
The Setup On my home network, I am running Windows Server 2003 as domain controller and file server with a SCSi attached disk array.I have several client PC's. 2 running Windows XP service pack 3, 1 laptop running Windows 7 Service pack 1 and a desktop also running Windows 7 Service Pack 1.These are connected by 2 switches - 1 x Netgear gigabit switch, and a Linksys PSUS4 USB Print server at 100mbps.The PC I use the most is the desktop running Win7 and transfer files to the server.After transferring some large files from the clients to the server, I noticed that the speed was considerably slower than what I was expecting it to be. After investigating, and eliminating elements of the network, I discovered that the Server NIC was running at 10mbps. I tried the usual things like forcing the NIC to run at 100mbps Full Duplex but this had no effect. Strangely, if I reboot the server while the desktop is still switched on the connection goes back to 100mbps. However if I reboot the desktop, or even alter the network settings, it immediatley reverts back to 10mbps.
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Nov 19, 2011
I am currently receiving 2.9 Meg download using my Intel 82578DC Gigabit though my Local area network can receive a maximum of 100 Mbps. I am with a network service provider that can give me a maximum of 38 Mbps. What defines the maximum speed I can download at if I am receiving 38Mbps from my supplier though my Network connection driver is only allowing me to download at 2.9Mbps?
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Mar 14, 2011
I am an administrator and my co-worker keeps on going on you tube during work. Is there any way to make his computer only use up 20KB per second instead of 150 KB per second?
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Jan 10, 2011
I did a network test with Passmarks Performancetest. I'm running a 10/100 network with all devices connecting at 100Mb. On Performancetest there are 2 tests to run for Network speed, TCP and UDP. The TCP speed test came back with an average 62000kbps (7.5Mb), and the UDP was 89000kbps (10.8Mb). As I'm running a 100mb network, shouldn't the results of been higher?
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Jul 18, 2011
Question on two ethernet cables
But I am wondering will my overall connection speed decrease if I have multiple devices on? I am just curious as to if I have both say an xbox 360 and my computer on.
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Feb 8, 2012
Network connection speeds drops from 1 Gb/s down to 10 Mb/s..Tried forcing the PC to communicate at 1 Gb/S "Link Speed & Duplex".Tried reinstalling drivers
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Apr 10, 2012
My ISP has increased the speed on their link on my side I got a new cisco 887. I replaced 877 with Cisco 887 and copied all the configuration from Old cisco 877 to new Cisco 887 Router.Now My users can connect to the servers and which are in main office (remotely) and they can access internet everything is fine.
The only big problem is Users are complaining Network is very very slow.Do I need to change any settings on my new router? [code]
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Jul 28, 2011
I have a small network of around 5 PCs,I have 8MB shared connection from ISP,so when I run speed test check from one of my PC it returns around 1.76 Mb download and 0.07 Mb Upload Speed,if I connect one of the PC directly to modem and run the test again so can I get 8MB of speed?
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Feb 6, 2013
why one of my two offices experiences significantly slower speeds when accessing the web. I'm a complete technology simpleton, so I haven't been able to figure out a logical reason for it. Here's the scenario:
Office 1..................................................Office 2
==========..........................................===========
Comcast Business.....................................Comcast Business
tests at 33 mbps down..............................tests at 7 mbps down
tests at 6 mbps up....................................tests at 3 mbps up
6 CPUs access Linksys SR216 10/100 switch..6 CPUs access 3Com Office Connect Ethernet Hub
switch accesses Comcast modem.................hub accesses Comcast modem
My laptop, and all other CPUs, perform significantly faster at Office 2.
Is it the difference between the switch at Office 1 v the hub at Office 2? I always thought they were sort of the same thing. I know I've taken some of the cables out of the switch in Office 1 and put them directly into the Comcast Modem and haven't seen any improvement.
Why on earth does my laptop perform so much better at Office 2. I've also moved desktops to Office 2 and they are noticeable faster at that location as well. I'm stumped. We access a major company's web site for account servicing, and it is twice as fast at Office 2...while using the exact same laptop.
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Sep 1, 2012
When connected to my router on my main desktop, I get download speeds of about .3-.85 mbps, I have comcast and a linksys N router, as well as a N wireless adapter in my desktop. If I use my laptop, I get around 10 mbps download speed, (Speeds are as of [URL]) but they still remain at .3 mbps on my desktop. I have tried two different wireless adapters in my computer. One is the Linksys AE2500 Dual Band N adapter, and the other is an ASUS N13 N Adapter. I have gotten the latest drivers of both adapters, but speeds stayed very low. When I connected the computer via ethernet cable, it ran at 16mbps. So I think that something must be wrong with some wireless settings, since I've tried 2 different adapters and was getting the same result, unless both were faulty I suppose. I also don't think it's my router's issue, because the wireless is working great on other wireless devices. I am using windows 7 on the desktop.
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Jan 2, 2013
First discovered this problem because I was unable to connect to a particular web site that was functional according to a friend that I was talking to on the telephone while trying to connect.
Problem: Network UPLOAD speed is randomly reduced from 2Mb to 600Kb while download speed seems unaffected (Abt. 30 to 50Mb). First eliminated the router, modem and cables as suspects working with ISP tech support. CAT 5 cabling to router and cable modem. Then I discovered that another machine on the network did not have this problem. I then discovered that disabling the network and re-enabling the network cured the problem.....temporarily. Downloaded and installed latest NIC driver from MB web site. No solution. Downloaded and installed latest NIC driver from Realtek web site. No solution. Updated MB BIOS. No solution.
MB= Asus M5A97 EVO
CPU: AMD FX-4100
OS: MS Windows 7 Professional 64-bit SP1 (Latest updates)
RAM: 8.00 GB Dual-Channel DDR3 @ 802MHz (11-11-11-28
NIC on MB Realtek PCIe GBE
Disabled TCP/IPV6. No solution. I suspect it is one of the "Advanced" settings for the Realtek PCIe GBE, but I don't know what they do. Anytime I disable and re-enable the network adapter my upload speed returns to normal. I haven't been able to isolate a particular action that causes the slow-down. The attached pics show speed test, before and after disable - re-enable network adapter. Same server.
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Feb 10, 2012
I have connected my Vista laptop to my old XP laptop using a network cable so that I can share files, printers, etc freely.I have forgotten the correct proceedure for doing this, although the two computers eventually, after a long time link up and I am able to share files. I have done nothing else. I have not entered numbers or anything. The number spaces are blank.I do not understand why it is working at all, but how do I speed up the connection?
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Nov 17, 2011
I have a homeplug network as follows:
6x 85Mbps homeplugs in different rooms, each connected to a 5 port switch
2x rooms contain a PC
5x rooms contain a Squeezebox of various types
Router connected to homeplug
I have realised that I am only getting very slow network speeds of between 10-15Mbps (LAN SPeed Test)which affects Squeezebox's ability to play several devices synched up at a time playing 320Kbps MP3s
I have done some proprietory testing in my home by switching devices on & off & testing network speed accordingly but no significant gains seem to be made. One PC seems to report far lower speeds though at 5Mbps which is 3 times lower than the other PC. They are set up to read/write files from eachothers shared folders (but not simultaneously).1st question is, am I being realistic about the speed of data throughput I expect on a network of this type? I was expecting a much higher speed like 50Mbps.I wouldn't mind investing in the faster Homeplug system but having to buy 6x adapters isn't worth it if I will only get a marginal improvement.
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