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3crwer100-75 Disconnections after FW update

sicksugar
Occasional Visitor

3crwer100-75 Disconnections after FW update

Hi,

I've had a 3Com OfficeConnect 54Mbps for about 1.5 years now. Up until now i had FW 1.25 installed.

I tried upgrading in hope to improve transfer rates, streaming problems, etc, and these seem to have improved.

However, i have a much bigger problem now which is constant disconnections when opening connections.

Meaning, whenever i start uTorrent, send files over IM or try to communicate through skype with video, after a few seconds i get disconnected from my ISP.

This is completely consistent. After about 5-10 seconds of transferring a file over skype, i can see on the router page that i am disconnected.



This is how my log looks like when this happens:

62905150 Mar 16 01:21:33 syslog: igmp started!

62905150 Mar 16 01:21:33 syslog: setsockopt- MRT_ADD_VIF

62905150 Mar 16 01:21:33 syslog: setsockopt- MRT_ADD_VIF

62905150 Mar 16 01:21:33 syslog: interface 192.168.1.1, DOWNSTREAM ver=0x16 name=br0 index=6

62905150 Mar 16 01:21:33 syslog: interface 85.64.34.140, UPSTREAM ver=0x16 name=ae1 index=5

62905150 Mar 16 01:21:34 klogd: ae1: add 01:00:5e:7f:ff:fa mcast address to master interface

62905150 Mar 16 01:21:41 klogd: HTB init, kernel part version 3.13

62905150 Mar 16 01:21:41 klogd: HTB: quantum of class 10001 is big. Consider r2q change.

62905150 Mar 16 01:21:43 klogd: HTB init, kernel part version 3.13

62905150 Mar 16 01:21:44 klogd: HTB: quantum of class 10001 is big. Consider r2q change.

62905150 Mar 16 01:21:44 klogd: HTB: quantum of class 10006 is big. Consider r2q change.

62905150 Mar 16 01:23:41 udhcpd: Received a SIGUSR1

62905150 Mar 16 01:23:43 udhcpd: Received a SIGUSR1

62905150 Mar 16 01:23:43 udhcpd: Received a SIGUSR1

62905150 Mar 16 01:23:44 udhcpd: Received a SIGTERM

62905150 Mar 16 01:23:44 udhcpd: Received a SIGTERM

62905150 Mar 16 01:23:45 udhcpd: udhcp server (v0.9.8) started

62905150 Mar 16 01:23:45 udhcpc: Sending release...

62905150 Mar 16 01:23:45 udhcpd: Attaching option router to list

62905150 Mar 16 01:23:45 ISP connection checker : : ISP connection checker : no reply from ISP's Router

62905150 Mar 16 01:23:45 udhcpd: Attaching option subnet to list

62905150 Mar 16 01:23:45 udhcpd: Attaching option dns to list

62905150 Mar 16 01:23:45 udhcpd: Attaching option lease to list

62905150 Mar 16 01:23:45 udhcpd: unable to parse 'option domain '

62905150 Mar 16 01:23:45 udhcpd: Attaching option mtu to list

62905150 Mar 16 01:23:45 udhcpd: add_lease ... XXX ... yiaddr = 192.168.1.2#

62905150 Mar 16 01:23:45 udhcpd: add_lease ... XXX ... yiaddr = 192.168.1.3#

62905150 Mar 16 01:23:45 udhcpd: add_lease ... XXX ... yiaddr = 192.168.1.2#

62905150 Mar 16 01:23:45 udhcpd: add_lease ... XXX ... yiaddr = 192.168.1.3#

62905150 Mar 16 01:23:45 udhcpd: Read 4 leases

62905150 Mar 16 01:23:45 udhcpd: br0 (our ip) = 192.168.1.1

62905150 Mar 16 01:23:45 udhcpd: adapter index 6

62905150 Mar 16 01:23:45 udhcpd: adapter hardware address 00:0f:cb:fb:7e:30

62905150 Mar 16 01:23:45 udhcpd: Opening listen socket on 0x00000000:67 br0

62905150 Mar 16 01:23:48 udhcpc: Entering released state

62905150 Mar 16 01:23:48 udhcpc: Received SIGTERM

62905150 Mar 16 01:23:48 udhcpc: Received SIGTERM



Has anyone any idea how to fix this?

I have cable internet, and my computer is connected physically to the router (not a wireless problem).

I can also add that when i upgraded the firmware i returned to factory defaults and put in all the information manually as it was before.



Thanks.



7 REPLIES
v11
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

i have the exact same problem.

i can't even send attachments on emails since the connection is lost every few minutes.

i have the security log says: HTB: quantum of class 10001 is big. Consider r2q change



i've tried to set the MTU to diffrenet levels, 1500, 1440 and even 700. none of them change a bit.



PLEASE ASSIST!



3Com Model: 3CWER100-75

software version: 1.3.06ww

Hardware version: 3COM_AP51_v01

sicksugar
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

I'm sorry to say i haven't found a solution for this yet. i also tried changing the MTU, but nothing helps.

I also can't send email attachments.

This is such a horrible upgrade i'm actually considering getting a new router, since 3COM aren't helping and there's noone to talk to.

Aren't there any 3com representatives here?

v11
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

i will try downgrading back to 1.3.0 hope it'll helps.

sicksugar
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

if it does, please post back here, thanks..

v11
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

well after downgrading back to 1.3ww all working fine.

seems fine by now, i managed to send attachment by email.. (3.5Mb file that cause disconnect earlier)



though this version has its bugs, i can live with that.

e.g the MTU at the Internet settings page is always dispalyed as 576, no matter what you put in.

but the thing is, it does changes the setting, just won't display it. so you can check if it has changed at: http://www.speedguide.net/analyzer.php and see if the MTU you've set is the same as shown there.

don't forget to save and apply to changes to take effect. (this also means all change you'll do require to re-enter mtu value)



but hey, whats this comparing to constant disconnets?? :-)

sicksugar
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

when downgrading, did you have to backup and restore the settings? or return to factory default and reenter the information?

or was it enough simply to update the firmware and all the settings were preserved?



thanks.

Fremax
Occasional Visitor

Re: 3crwer100-75 Disconnections after FW update

Hi all,

I was having big trouble to use FTP software to upload files to one of my FTP sites. I tried with several computers and several programs, but I was always losing connections.



Well guess what, it is fixed by rolling back to version 1.3.0!!!

SO their is definitely a BUG in version 1.3.06



Hope they'll fix it some day. ;)