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What happened to cause these network errors?

Last response: in Networking
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Anonymous
September 29, 2004 4:45:29 PM

Archived from groups: comp.dcom.lans.ethernet (More info?)

Added a new switch and tidied up by moving some connections to the new
switch and re-arranging others.

Suddenly email server wasn't delivering to the Novell server anymore,
users couldn't see certain folders or drive mappings.

Powered everything down then brought everything up again starting with
switches, then servers, then workstations and everything ok.

Are switches that susceptible to moving the connections around?


--
TonyL
September 30, 2004 12:18:01 AM

Archived from groups: comp.dcom.lans.ethernet (More info?)

"Tony Lewis" <intothebin@hotmail.com> wrote in message
news:415aad90.13931822@news.individual.net...
> Added a new switch and tidied up by moving some connections to the new
> switch and re-arranging others.
>
> Suddenly email server wasn't delivering to the Novell server anymore,
> users couldn't see certain folders or drive mappings.
>
> Powered everything down then brought everything up again starting with
> switches, then servers, then workstations and everything ok.
>
> Are switches that susceptible to moving the connections around?
>
>
> --
> TonyL

I've seen this happen with an unmanaged Netgear switch where the forwarding
table in the switch doesn't seem to relearn a MAC address when it appears on
a different port, even though the device that has moved is transmitting into
the new port.

Cycling the power on the switch means it has to relearn its forwarding table
and everything starts talking again.

Pete
Anonymous
September 30, 2004 4:10:20 PM

Archived from groups: comp.dcom.lans.ethernet (More info?)

On Wed, 29 Sep 2004 20:18:01 +0100, "Pete" <email@see.message.body>
wrote:

>"Tony Lewis" <intothebin@hotmail.com> wrote in message
>news:415aad90.13931822@news.individual.net...
>> Added a new switch and tidied up by moving some connections to the new
>> switch and re-arranging others.
>>
>> Suddenly email server wasn't delivering to the Novell server anymore,
>> users couldn't see certain folders or drive mappings.
>>
>> Powered everything down then brought everything up again starting with
>> switches, then servers, then workstations and everything ok.
>>
>> Are switches that susceptible to moving the connections around?
>>
>>
>> --
>> TonyL
>
>I've seen this happen with an unmanaged Netgear switch where the forwarding
>table in the switch doesn't seem to relearn a MAC address when it appears on
>a different port, even though the device that has moved is transmitting into
>the new port.
>
>Cycling the power on the switch means it has to relearn its forwarding table
>and everything starts talking again.
>

Spot on - it was an unmanaged Netgear. Thanks for that info.


--
TonyL
!