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Problem with 2950-24T

 
 
Emmanuel Bouchard
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      12-02-2004
Hi everyone..

I have a strange problem... I have a fiber LAN connected this way:



/---------------------------------------2950
| --------------------------------------2950
3750 (With Layer 3 routing) -------------2950
| ---------------------------------------2950
\----------------------------------------2950

All links are Gigabit from the 3750 to the 2950s. My 2950s distribute to
PCs or to other 2950s. On 4 of the links, I have no problems, everything
goes well...

On one of the link, I have slow speed and packet loss when using big ping
packets (like 10000 bytes)...

On both 3750 and 2950 ports, no CRC, FCS or collisions are logged. But large
number of deferred packets is recorded...

Can deferred packets result in loss of ping packets??? All the packets
passing returns within 1 or 2 msec.

If that is... Is flow control the better way to help me??

Thanks..

Emmanuel Bouchard




 
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Andrey Tarasov
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      12-02-2004
Hello, Emmanuel!
You wrote on Thu, 2 Dec 2004 17:29:31 -0500:

EB> All links are Gigabit from the 3750 to the 2950s. My 2950s
EB> distribute to PCs or to other 2950s. On 4 of the links, I have no
EB> problems, everything goes well...

EB> On one of the link, I have slow speed and packet loss when using
EB> big ping packets (like 10000 bytes)...

EB> On both 3750 and 2950 ports, no CRC, FCS or collisions are
EB> logged. But large number of deferred packets is recorded...

Let me guess, you have 12.1(13) on 2950? Time to upgrade.

With best regards,
Andrey.
 
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Emmanuel Bouchard
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      12-03-2004
Damn! Tell it's not that stupid?? My 2950 is indeed at 12.1(13) Should have
read the caveats.. I'll try that tomorrow... Thanks a lot for your help!

"Andrey Tarasov" <(E-Mail Removed)> a ecrit dans le message de news:
cooaa4$243d$(E-Mail Removed)...
> Hello, Emmanuel!
> You wrote on Thu, 2 Dec 2004 17:29:31 -0500:
>
> EB> All links are Gigabit from the 3750 to the 2950s. My 2950s
> EB> distribute to PCs or to other 2950s. On 4 of the links, I have no
> EB> problems, everything goes well...
>
> EB> On one of the link, I have slow speed and packet loss when using
> EB> big ping packets (like 10000 bytes)...
>
> EB> On both 3750 and 2950 ports, no CRC, FCS or collisions are
> EB> logged. But large number of deferred packets is recorded...
>
> Let me guess, you have 12.1(13) on 2950? Time to upgrade.
>
> With best regards,
> Andrey.



 
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