How to check packet size of NIC

[Abhay Kumar_4]

Hi Team,



How to check packet size of NIC.



Thanks
Abhay Kumar

[cenk sasmaztin]

packet size be happen 64 bayte to 1500 bayte as per application type

some application for example voip be happen small size packet some application be happen large size packet

if you want see packet type and size on ethernet card you can use ethereal
http://www.ethereal.com/

if you want see tx or rx packet quantity and total tx and rx byte traverse on switch port
you can use this command

show interface 2

[rick jones]

As already implied the "packet size" of a NIC varies. For IEEE-defined Ethernet, that ranges from 60 to 15XX bytes. If you were looking for the *maximum* packet size of a NIC, in the context of IP that would be called the MTU for Maximum Transmission Unit. The typical IP (version 4) MTU on an Ethernet NIC is 1500 bytes. That includes the IP header, and the higher layer protocol headers as well as user data. It does not include the Ethernet header.

While the IEEE does not define it, some Gigabit and virtually all 10 Gigabit Ethernet NICs support a larger IP MTU - most will allow an IP MTU of 9000 bytes or more, some are not as capable and may be limited to 8000 bytes. This is generally referred to as "Jumbo Frames."

Under Linux and Unix (IIRC) I believe that the ifconfig command will report the MTU of the interface.