Re: Collisions on 100BaseT FD

Michael Kujawa (kujawa@cs.ucf.edu)
Wed, 6 Jan 1999 12:21:29 -0500 (EST)

Bad cabling can do that do you (in order to send a packet, it must be
retransmitted many times.) Does ping drop packets? How about large
pings? ('ping -s 10240', or especially 'ping -f')

With 100Base-TX (half duplex), I am able to 'ping -f -s 10240' without
dropping packets, with only a few collisions, and I get an average
latency of 2.3ms.

Just because the collision light is on doesn't neccessarily mean there is
a problem. Both FTP and Samba here result in the collision light coming
on (for one of our hubs), but they still manage around 6MBps.

-Mike
kujawa@cs.ucf.edu

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