[SOLVED] Please Help, Ethernet issues at Work

[outdated731]

My internet slows down to the point of being unusable for 10-15 seconds, every 5-10 minutes (but I'm 99.9% sure it doesn't disconnect). IT doesn't support Linux, and I'm a n00b and it is driving me crazy.. I can't get anything done because a lot of things disconnect when this happens.

To further explain what I mean:
- Pidgin disconnects and reconnects
- Chrome just has a "really long load time" ("loads" while this happens, then the page shows up after everything is back to normal)
- a streaming video won't recognize the internet as disconnected (eg. a lot of services stop buffering and show the video as "fully buffered" when the internet disconnects.. but it doesn't do that with this issue)
- ssh connections are fine if I don't touch them when the slowdown happens.. but if I try to use it while it's going on, i get a "Write failure: Broken pipe" and a disconnect


I compared my ifconfig to my teammate's and it seemed fine. I've been monitoring /var/log/messages and /var/log/syslog and neither of them tell me anything. I just restarted, and it's already happening, and all I have in messages is:

Nov 12 13:51:34 **-ws kernel: [ 42.209014] ADDRCONF(NETDEV_UP): eth1: link is not ready
Nov 12 13:51:37 **-ws kernel: [ 45.336264] tg3: eth1: Link is up at 1000 Mbps, full duplex.
Nov 12 13:51:37 **-ws kernel: [ 45.336265] tg3: eth1: Flow control is off for TX and off for RX.
Nov 12 13:51:37 **-ws kernel: [ 45.337166] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready

and

Nov 12 13:54:15 **-ws kernel: [ 202.411449] lo: Disabled Privacy Extensions
but that's whenever Chrome starts up.


Over the past few days, I've been getting a lot of:

Nov 12 11:35:51 **-ws kernel: [698262.290354] device eth1 left promiscuous mode
Nov 12 11:35:51 **-ws kernel: [698262.290375] bridge-eth1: disabled promiscuous mode
Nov 12 11:36:20 **-ws kernel: [698290.739530] device eth1 entered promiscuous mode
Nov 12 11:36:20 **-ws kernel: [698290.739545] bridge-eth1: enabled promiscuous mode

and I thought maybe that was it, but I disabled promiscuous mode (sudo ifconfig eth1 -promisc) and it still happened. And. considering the slowdown *just* happened when I restarted, and I didn't get any "left/disabled/entered/enabled promiscuous mode" messages, I am at a complete loss now. Please, please help!




EDIT:
I've also already checked the wall and the Ethernet cable to see if either of them is the problem, but using the same connection with a laptop, the laptop is fine.. so I'm pretty sure it's my computer =(

[tinytux]

Hey there.

Any proxy ?

[elija]

It could be IPV6 causing issues.

These instructions are for Ubuntu 10.04

Right click on network manager and select "Edit Connections"
It will pop up a window, choose Wired or Wireless as apporopriate
Select the connection and click edit
Go to IPV6 settings and set the method to ignore.
Click Apply and then OK your way back to the desktop.
You will be asked for password at some point during this process.

[outdated731]

Turns out there is 1 guy in IT that works with Linux.

My ethernet got changed from eth0 to eth1 (not sure how.. I think IT was messing with people's setups / locking down stuff), but some files needed to be updated, so the internet problems were caused by that? The IT dude changed my hostname in /etc/hosts and changed interfaces managed from eth0 to eth1 in /etc/network/interfaces, and now it's all better!


Thanks to everyone who replied =)