Switch Drops Large Packets

[Rami Saber]

Hi,

I have a problem where some users are facing general slowness in the network, this is affecting internet, email and some application.

I checked these users and I found some packet drops when pinging their machines, also whe I intiate a ping with a large size packet 65500 bytes the user machines do not replay at all.

In the Cisco 2960 I checked the status of the interface, every thing seems normal expect that i found the users sharing a large total output drops

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 820720130

Other users connected to the same switch and the same vlan are not facing the issues.

Appticate any kind of help

[Rami Saber]

I'v also noticed that for the interfaces that have the issue, under show controller utilization, transmit utilization is 1.

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[ALIAOF_]

Do you have any SAN and/or database servers connected to this switch.  Also what does your "show system mtu" looks like?

[Rami Saber]

No, only users and printers

MTU shows 1500

Not all users on the stack are affected,

However the affected users show
Total output drops (ex:486)
Controller utilization (Transmit 1)
OutDicard (ex: 727)

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