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HP 180 Degree Turn Product Review Page 19

The ethernet evolution.
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Several Physical Media Supported
Logical Link Control LLC
Media Access Control MAC
PLS
Reconciliation
MII
AUI
PLS
AUI
PMA (MAU)
PMA
MDI
MDI
Medium
Medium
1-10 Mbit/s
10 Mbit/s
AUI Attachment Unit Interface, PLS
PCS Physical Coding Sublayer, MII
Interface, PMA Physical Medium Attachment, MAU Medium Attachment Unit, PMD Physical Medium
Dependent
(C) Herbert Haas
2005/03/11
The diagram above shows various physical media designs supported by the
official GE standard. Each modern GE card could theoretically support the old
10 Mbit/s standard as well. However many vendors create GE NICs that only
support GE or GE and FE—who would connect a precious GE interface with
another interface, which is 100 times slower?
MAC Control (optional)
Reconciliation
MII
PCS
PMA
PMD
MDI
Medium
100 Mbit/s
Physical Layer Signaling, MDI
Media Independent Interface, GMII
Data Link Layer
Reconciliation
GMII
PCS
PHY
PMA
PMD
MDI
Medium
1000 Mbit/s
Medium Dependent Interface
Gigabit Media Independent
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