802.3 uses CSMA/CD *BUT* 802.11 (wireless ETHERNET) uses CSMA/CA so, in the
truest sense YES, it IS possible for Ethernet media to deploy both. Just not
simultaneously.
************************************************************************
Brad Stanfield
Network Engineer
[EMAIL PROTECTED]
Government Micro Resources
Network Operations Control Center
Bldg 33 NAVSEA NCOE
757-393-9526
-----Original Message-----
From: Luong, David [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 17, 2000 5:19 PM
To: '[EMAIL PROTECTED]'; 'Cisco Group Study'
Subject: RE: Deferred Packets
Further to your response, a fellow co-worker of mind has mentioned that
ethernet used CSMA/CD 802.3 instead of CA? Is it possible for ethernet media
to deploy both? I have not come across this before....any takers out there?
Dave.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 17, 2000 12:40 PM
To: Luong, David
Subject: Re: Deferred Packets
Deferred packets are a normal part of an ethernet transmission.
If multiple hosts attempt to transmit over the same ethernet media at the
same
time, a collision occurs. After a specified period of time, both packets
involved in the collision are lost and must be retransmitted by the
transmitting
hosts. Ethernet interfaces employ collision-avoidance methods to detect
other
traffic on the network and await opportunities for safe transmission,this is
also known as ethernet deference.
Hope this helps.
"Luong, David" <[EMAIL PROTECTED]> on 07/17/2000 01:37:57 PM
Please respond to "Luong, David" <[EMAIL PROTECTED]>
To: "'Cisco Group Study'" <[EMAIL PROTECTED]>
cc: (bcc: LOMBMML Hill Michale/Lincoln/Metromail)
Subject: Deferred Packets
Hi Folks:
On a 10-half ethernet connection between two routers, we are seeing deferred
packets happening as well as the normal usual collisions. Are deferred
packets just normal as well? Is it expected in ethernet media? Thanks in
advance...
David Luong
CCNP,CCNA,Network+,A+,i-Net+
Telecommunications Analyst
Insurance Corporation of B.C.
Vancouver, B.C CANADA
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