Question about EliteGroup ECS P4M900T-M2 Socket 775 Motherboard

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Onboard Lan dropping packets

I am using SCO UNIX 5.0.6. The VIA Rhine driver ver 4.19. When the machine comes up there is a high degree of packet loss aprox 25%. Is there a newer driver available or what else can i try.

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Check your router and try a different ethernet chord.

Posted on Mar 05, 2009

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Does the ASUS M4N68T -M V2 Xtreme need a processer or does it come with one


hello mfrancky, what do you mean about your question?
if u mean M4N68T -M V2 Xtreme have own processor on its board and u don't need to buy one, then the answer is its don't have...
when u buy a motherboard, u only get a motherboard (without other component),, processor is different unit from motherboard fabrication.. so the answer is ' it does come with one'..
in different case, if u buy it with packet offer, usually minimum packet is motherboard with processor.. so if u want to buy computer in packet, u need to ask first the seller what component that he/she is offering.. but if u only buy a motherboard then u only get motherboard (the common onboard component for motherboard is audio, LAN, and VGA)
hope this useful, regards.

Sep 19, 2011 | Computers & Internet

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How do latency and packet loss determine network performance and what can be...


The triumvirate of network performance metrics are packet loss, latency and jitter.

Almost all network applications use TCP (Transmission Control Protocol) to get their data from point A to point B. About 85% of the overall internet's traffic is TCP, of which specific aspect is that it completely hides the packet-based nature of the network from applications. Whether an application hands a single character or a multi-megabyte file to TCP, puts the data in packets and sends it on its way over the network. The internet is a scary place for packets trying to find their way: it's not uncommon for packets to be lost and never make it across, or to arrive in a different order than they were transmitted. TCP retransmits lost packets and puts data back in the original order if needed before it hands over the data to the receiver. This way, applications don't have to worry about those eventualities.

Network latency
TCP has a number of mechanisms to get good performance in the presence of high latencies:
1) Make sure enough packets are kept "in flight". Simply sending one packet and then waiting for the other side to say "got it, send then next one" doesn't cut it; that would limit throughput to five packets per second on a path with a 200 ms RTT. So TCP tries to make sure it sends enough packets to fill up the link, but not so many that it oversaturates the link or path. This works well for big data transfers.
2) For smaller data transfers TCP uses a "slow start" mechanism. Because TCP has to wait for acknowledgments from the receiver, more latency means more time spent in slow start. Web browser performance used to be limited by slow start a lot, but browsers started to reuse TCP sessions that were already out of slow start to download additional images and other elements rather than keep opening new TCP sessions.
3) Also you may use simple open-transfer-close-open-transfer-close sequences that work well on low latency networks but slow down a lot over larger distances or on bandwidth-limited networks, which also introduce additional latency.
4) Try to use a DNS server close by. Every TCP connection is preceded by a DNS lookup. If the latency towards the DNS server is substantial, this slows down the entire process.

Packet loss
Packets are lost in networks for two reasons:
1) Every transmission medium will flip a bit once in a while, and then the whole packet is lost. Wireless typically sends extra error correction bits, but those can only do so much. If such an error occurs, the lost packet needs to be retransmitted. This can hold up a transfer.
But if network latency or packet loss get too high, TCP will run out of buffer space and the transfer has to stop until the retransmitted lost packet has been received. In other words: high latency or high loss isn't great, but still workable, but high latency and high loss together can slow down TCP to a crawl.
2) Another reason packets get lost is too many packets in a short time: TCP is sending so fast that router/switch buffers fill up faster than packets can be transmitted.If TCP has determined that the network can only bear very conservative data transfer speeds, and slow start really does its name justice, it's faster to stop a download and restart it rather than to wait for TCP to recover.
Jitter - is the difference between the latency from packet to packet
Obviously, the speed of light isn't subject to change, and fibers tend to remain the same length. So latency is typically caused by buffering of packets in routers and switches terminating highly utilized links. (Especially on lower bandwidth links, such as broadband or 3G/4G links.) Sometimes a packet is lucky and gets through fast and sometimes the queue is longer than usual. For TCP, this isn't a huge problem, although this means that TCP has to use a conservative value for its RTT estimate and timeouts will take longer. However, for (non-TCP) real-time audio and video traffic, jitter is very problematic, because the audio/video has to be played back at a steady rate. This means the application either has to buffer the "fast" packets and wait for the slow ones, which can add user-perceptible delay, or the slow packets have to be considered lost, causing dropouts.

In conclusion, in networks that use multiple connections to the internet, it can really pay off to avoid paths that are much longer and thus incur a higher latency than alternative paths to the same destination, as well as congested paths with elevated packet loss. The path selecting process can be performed automatically: learnhow to automate evaluation of packet loss and latencyacross multiple providers to choose the best performing route.

on Jan 27, 2015 | Computers & Internet

1 Answer

How to use hack? i want to hack of my stalker facebook


First learn Java, Java Script, Pearl, Basic, and Pro is a good start for computing languages. Then become familiar with using CMD based prompts usually through a UNIX based system. Once familiar with using CMD style prompts rooted on a UNIX/Linux based system Id check up on your security and at least proxy yourself through a known source and start doing some packet sniffing. If you dont know what a packet is or how to recieve anon info then well...

PS Hacking = very illegal and facebook has hired some very talented programmers making this highly unlikely

Pro Tip: Learn what a Keylogger is or a Trojan this might help

May 09, 2011 | Computers & Internet

1 Answer

My router is on but it seems so slow. i keep getting randomly disconnected, the connection is terrible and even when i turn it off for 30 seconds and on again it stills acts up, any ideas?


ping your router with a packet length strength. To do the ping test, go to Start-Run and type CMD and hit enter. Then, in the Command Prompt Window type in the following

ping 192.168.0.1 -l 30000 9

I suppose the 192.168.0.1 will be the default gateway of your router. To check which is the default gateway of your router you can double click the connection icon on your PC, and click the Support tab. You'll see the degault gateway IP third on the list.

Now, if it pings back all three times with times below 100ms then ok. If it doesnt then reduce the ping length to 20000, if again you have losses then reduce it again to 10000. If the ping loses packets and response is slow you'll probably need a new power cord.
If the pinging is ok at 30k then you'll probably need to change the LAN cable that leads from your internet connection onto the wifi router.
To verify this, run this command

ping google.com -l 10000 and see if you have any losses. If you do have losses, then do a ping like this

ping google.com -l 32000 if you again have losses in the ping then you'll need to change your LAN cable because the 32kb packet is almost a standard size of packets and it should have no problems to get through the router, unless the LAN cable is bad.

Hope this helps. Please vote a Thumbs Up if you found this useful and informative.

Jan 18, 2011 | NetGear WGR614 Wireless Router

1 Answer

How to install unix sco kindly give full details


start the computer with the Unix disk in the drive.
Choose the option to run unix without installing to the pc.....(this runs without a HDD>Itll take some time but let it install all the way, and as system is fully running..Choose "install unix " from the drop down menu.
After installation, eject the cd and set up to boot from the HDD.

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1 Answer

Network connections issue


Have you tried assigning a static ip to the computer.

Jun 20, 2009 | HP ProCurve 2524 24x10/100 Mbps Networking...

1 Answer

Connected, hi packet loss


check your explorer in the internet options and see your connection settings and check if your connection is using proxy, if proxy change in a default...

Jun 17, 2009 | Computers & Internet

1 Answer

NIC problem on Intel D101GGC


Ensure security and firewalls are turned off if incoming packets cannot be received. Are you pinging the pc at 127.0.0.1? Update the driver via the pc device manager or buy a new nic for around $10 these days.

Apr 19, 2009 | Computers & Internet

1 Answer

Please advice me as soon as uyou can ..thx


Start troubleshooting the problem by checking the physical layer (Plugs, Jacks, Cables). Replace them with known working equipment.

Once you have traced the line from your Cisco to each other end (through to ISP, and to network switch), then reset your error counters, by restarting the cisco.

Check the ethernet interfaces on the network switch and the Cisco. Make sure they are both set to Autonegotiate or both set to the same settings like 100mbs Full-duplex. If they are not communicating the same way lots of errors will be generated.

Nov 09, 2008 | Computers & Internet

1 Answer

No internet packets received


Hi,

1. just check the lan card is enbled
example:my network place --right click---properties---wireless lan card,

2. check the R u getting ip address,
example: start---run---cmd----ipconfig

May 08, 2008 | Toshiba Satellite M115-S1061 Notebook

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