switch ports are frequently disabled

switch ports are frequently disabled
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Subject Author Date
switch ports are frequently disabled networking 02-02-2007
Posted by networking on February 2, 2007, 4:31 am
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Hello

I have one organization which have about 1000 systems.we have one
manageable switch and many unmanageable switches.all our computers
are
connected to un manageable switches and unmanageble switches are
connected to manageable switch.My manageable switch is connected to
providors switch.In peak usage the switch ports on providor are get
fequently blocked.Pls give me solution to prevent ports blocking
problem.


Pure Networks
Posted by Denis Jedig on February 2, 2007, 7:57 am
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On 2 Feb 2007 01:31:47 -0800 networking wrote:

> providors switch.In peak usage the switch ports on providor are get
> fequently blocked.Pls give me solution to prevent ports blocking
> problem.

Sounds like you are experiencing some STP-related problem. Disable STP for
your uplink ports to check out if this is the case. If so, *resolve* the
problem and *reenable* STP for these ports.

--
Denis Jedig
syneticon networks GbR http://syneticon.net/service/

Posted by Walter Roberson on February 2, 2007, 11:57 am
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>On 2 Feb 2007 01:31:47 -0800 networking wrote:

>> providors switch.In peak usage the switch ports on providor are get
>> fequently blocked.Pls give me solution to prevent ports blocking
>> problem.

>Sounds like you are experiencing some STP-related problem.

Spanning tree problems on unmanaged switches?? I suppose that is
possible, but when I hear of a site with 1000 systems and only
one managed switch, I tend to think "low budget, old equipment"
that probably does not handle spanning tree.

Posted by Denis Jedig on February 2, 2007, 12:06 pm
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On Fri, 02 Feb 2007 16:57:03 GMT Walter Roberson wrote:

> Spanning tree problems on unmanaged switches??

My understanding is that his one and only managed switch does have upstream
ports which tend to change into "BLOCKED" state (hence the STP guess).
Surely possible that I am wrong.

--
Denis Jedig
syneticon networks GbR http://syneticon.net/service/

Posted by Walter Roberson on February 2, 2007, 12:34 pm
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>On Fri, 02 Feb 2007 16:57:03 GMT Walter Roberson wrote:

>> Spanning tree problems on unmanaged switches??

>My understanding is that his one and only managed switch does have upstream
>ports which tend to change into "BLOCKED" state (hence the STP guess).
>Surely possible that I am wrong.

The OP's question was unfortunately unclear. I replied at greater length
to the multiposted copy in comp.dcom.sys.cisco . I did not think
of "blocked" in the spanning tree sense; my thinking was more along
the lines of traffic being dropped due to congestion.

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other useful resources:
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