what are "runts" packets ?

They're basically packets which arrived incomplete for
some reason - usually they are too-short.

 

a packet smaller than 64 bytes, is considered as a runt packet and is
ignored as too small.

 

hello everybody,

I have a problem with a port on a cisco 2950 switch :

38062 packets input, 6125735 bytes
Received 26 broadcasts, 3412 runts, 0 giants, 0 throttles
3503 input errors, 56 CRC, 35 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast


I don't know what "runts" packets are, can somebody help me ?

thanks in advance.

 

I think that's "less than 64 bits"

 

Runt packets are packets that are less than the minimum packet
size (64 bytes for Ethernet). They often occur due to collisions on
the line. On switches the cause is usually a mis-matched duplex
problem (full on one end and half on the other) caused by bad
autodetection of a device. Try "hard coding" the duplex to either full
or half on one or both ends and see if the problem goes away. We have
had lots of issues with bad NIC cards and/or drivers that cause this.
Sometimes upgrading the NIC driver helps. Hope this helps solve your
problem.

Rich Blum - Author
"Network Performance Open Source Toolkit" (Wiley)
http://www.wiley.com/WileyCDA/WileyTitle/productCd-0471433012.html

 

Looks like you need to check cables (CRC, Frame, input indicates);
test it by Fluke2000, Agilent WireScope, ... to certify network
cabling. Cable become Cat5e only after certification, it's not enough
to only to by cables and parts that have Cat5e stamp.

 

"Runts" are packets smaller than 64k.

 

:"Runts" are packets smaller than 64k.

Not unless the missing unit afterwards is the "microbyte".

 

Nope, it's <64 bytes, which is the same thing as 512 bits. <64 bits
ouldn't even include source and destination MAC addresses. That
wouldn't be a runt, that would be a munchkin.

 

Wouldn't that be "millibyte?"

* I couldn't resist *

- Michael

Houghton.

 

That munchkin line was funny !

 

||> In article <>,
|> :"Runts" are packets smaller than 64k.

|> Not unless the missing unit afterwards is the "microbyte".

|Wouldn't that be "millibyte?"

|* I couldn't resist *

Okay, ya caught me.

Some, though, would insist that the proper unit would be "mibibyte",
symbol miB.

http://physics.nist.gov/cuu/Units/binary.html

 

or millibyte, rather.

kr

 

a runt is a frame less than 64 bytes

Basically the information isnt getting through,,,Causes are usually something due to bad cables, bad ports or bad nic card....usually fixing one of the 3 fix the issue....