Lights flashing on hub

Hi all,

I have a couple of machines connected to an 8 port hub. Yesterday
everything was working fine. Unfortunately today none of my machines can
see eachother. What does it mean if all the lights on the hub are flashing
constantly? I don't have the manual for the hub, so I can't identify what
the problem may be.

Thanks.

In article <bqhoc5$ios$(E-Mail Removed)>, "M Jones"
<(E-Mail Removed)> wrote:
>Hi all,
>
>I have a couple of machines connected to an 8 port hub. Yesterday
>everything was working fine. Unfortunately today none of my machines can
>see eachother. What does it mean if all the lights on the hub are flashing
>constantly? I don't have the manual for the hub, so I can't identify what
>the problem may be.
>
>Thanks.

It could mean that:

1. The hub or its power supply has gone bad.

2. One or more computers are flooding the hub with packets, possibly
due to a virus or worm.

3. One or more of the computers' network cards are configured to use
full duplex. A hub requires half duplex.

Unplug all of the computers from the hub and add them back one by one
to see if a particular computer is causing the problem.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional - Windows Networking
http://mvp.support.microsoft.com

Steve Winograd's Networking FAQ
http://www.bcmaven.com/networking/faq.htm

"Steve Winograd [MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In article <bqhoc5$ios$(E-Mail Removed)>, "M Jones"
> <(E-Mail Removed)> wrote:
> >Hi all,
> >
> >I have a couple of machines connected to an 8 port hub. Yesterday
> >everything was working fine. Unfortunately today none of my machines can
> >see eachother. What does it mean if all the lights on the hub are
flashing
> >constantly? I don't have the manual for the hub, so I can't identify
what
> >the problem may be.
> >
> >Thanks.
>
> It could mean that:
>
> 1. The hub or its power supply has gone bad.
>
> 2. One or more computers are flooding the hub with packets, possibly
> due to a virus or worm.
>
> 3. One or more of the computers' network cards are configured to use
> full duplex. A hub requires half duplex.
>
> Unplug all of the computers from the hub and add them back one by one
> to see if a particular computer is causing the problem.
> --
> Best Wishes,
> Steve Winograd, MS-MVP (Windows Networking)
>
> Please post any reply as a follow-up message in the news group
> for everyone to see. I'm sorry, but I don't answer questions
> addressed directly to me in E-mail or news groups.
>
> Microsoft Most Valuable Professional - Windows Networking
> http://mvp.support.microsoft.com
>
> Steve Winograd's Networking FAQ
> http://www.bcmaven.com/networking/faq.htm


I've unplugged everything from the hub and turned off the power. I've left
it off for 5 mins and turned the power back on. All the lights are still
flashing!! Does this mean I need to buy a new hub?

mine does that once in a blue moon ...I just unplug it , then plug it back
in
"M Jones" <(E-Mail Removed)> wrote in message
news:bqhoc5$ios$(E-Mail Removed)...
> Hi all,
>
> I have a couple of machines connected to an 8 port hub. Yesterday
> everything was working fine. Unfortunately today none of my machines can
> see eachother. What does it mean if all the lights on the hub are
flashing
> constantly? I don't have the manual for the hub, so I can't identify what
> the problem may be.
>
> Thanks.
>
>
>

that is what it would say to me.... :<
"M Jones" <(E-Mail Removed)> wrote in message
news:bqi0gl$11f$(E-Mail Removed)...
>
> "Steve Winograd [MVP]" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > In article <bqhoc5$ios$(E-Mail Removed)>, "M Jones"
> > <(E-Mail Removed)> wrote:
> > >Hi all,
> > >
> > >I have a couple of machines connected to an 8 port hub. Yesterday
> > >everything was working fine. Unfortunately today none of my machines
can
> > >see eachother. What does it mean if all the lights on the hub are
> flashing
> > >constantly? I don't have the manual for the hub, so I can't identify
> what
> > >the problem may be.
> > >
> > >Thanks.
> >
> > It could mean that:
> >
> > 1. The hub or its power supply has gone bad.
> >
> > 2. One or more computers are flooding the hub with packets, possibly
> > due to a virus or worm.
> >
> > 3. One or more of the computers' network cards are configured to use
> > full duplex. A hub requires half duplex.
> >
> > Unplug all of the computers from the hub and add them back one by one
> > to see if a particular computer is causing the problem.
> > --
> > Best Wishes,
> > Steve Winograd, MS-MVP (Windows Networking)
> >
> > Please post any reply as a follow-up message in the news group
> > for everyone to see. I'm sorry, but I don't answer questions
> > addressed directly to me in E-mail or news groups.
> >
> > Microsoft Most Valuable Professional - Windows Networking
> > http://mvp.support.microsoft.com
> >
> > Steve Winograd's Networking FAQ
> > http://www.bcmaven.com/networking/faq.htm
>
>
> I've unplugged everything from the hub and turned off the power. I've
left
> it off for 5 mins and turned the power back on. All the lights are still
> flashing!! Does this mean I need to buy a new hub?
>
>
>

"M Jones" <(E-Mail Removed)> wrote in
news:bqi0gl$11f$(E-Mail Removed):

> I've unplugged everything from the hub and turned off the power.
> I've left it off for 5 mins and turned the power back on. All the
> lights are still flashing!! Does this mean I need to buy a new
> hub?
>

By "turned off power", I assume you unplugged it from the wall.
Doesn't sound good...
But before you throw it away, try connecting to the manufacturer's web
page and see if there is a manual or FAQ posted there for you to
reference.

HTH,
John