Altera Stratix - Page 354

8–2 Altera Corporation
Stratix Device Handbook, Volume 2 July 2005
10-Gigabit Ethernet
The purpose of the 10-Gigabit Ethernet proposed standard is to extend
the operating speed to 10 Gbps defined by protocol IEEE 802.3 and
include WAN applications. These additions provide a significant increase
in bandwidth while maintaining maximum compatibility with current
IEEE 802.3 interfaces.
Since its inception in March 1999, the 10-Gigabit Ethernet Task Force has
been working on the IEEE 802.3ae Standard. Some of the information in
the following sections is derived from Clauses 46, 47, 49, and 51 of the
IEEE Draft P802.3ae/D3.1 document. A fully ratified standard is
expected in the first half of 2002. Figure 8–1 shows the relationship of
10-Gigabit Ethernet to the Open Systems Interconnection (OSI) protocol
stack.
Figure 8–1. 10-Gigabit Ethernet Protocol in Relation to OSI Protocol Stack
Notes to Figure 8–1:
(1) LLC: logical link controller
(2) MAC: media access controller
(3) PCS: physical coding sublayer
(4) PHY: physical layer
(5) PMA: physical medium attachment
(6) PMD: physical medium dependent
(7) MDI: medium dependent interface
Application
Presentation
Session
Transport
Network
Data Link
Physical
Higher Layers
LLC (1)
MAC (2)
Reconciliation
PCS (3)
PMA (5)
PMD (6)
Medium
XGMII
XSBI
MDI (7)
PHY (4
)
OSI Reference
Model Layers