Gigabit Ethernet is becoming th3 de facto standard for network architecture today. With Gigabit Ethernet we can reach transfer rates of 1000 Mbps (1 Gbps), using traditional media such as coaxial, twisted - pair, and fiber - optic cabling. There are two standards (more on the IEEE standards in Chapter 2 for Gigabit Ethernet : IEEE 802.3z and IEEE 802.3ab.
IEEE 802.3z=The IEEE 802.3z standard defines Gigabit Ethernet that runs over fiber-optic cabling or coaxial Cabling. There are three types of Gigabit Ethernet that fall under this standard :
1000BaseSX= The Gigabit Ethernet architecture that runs at 1000 Mbps over multimode fiber (MMF) optic cabling. This architecture supports distance up to 3 kilometer.
1000BaseSX :- The IEEE 802.3z standard define Gigabit Ethernet that runs over fiber - optic cabling or coaxial cabling. There are three types of Gigabit Ethernet that fall under this standard:
1000BaseLX:- The Gigabit Ethernet architecture that runs at 1000 Mbps over multimode fiber (MMF) optic cabling. This architecture is designed for short distances of up to 550 meters.
1000BaseCX :- The Gigabit Ethernet architecture that runs at 1000 Mbps over coaxial cable and supports distance of up to 25 meters.
IEEE 802.3ab:- The IEEE 802.3ab standard, known as 1000BaseTX, defines Gigabit Ethernet that runs over twisted - pair cabling and uses characteristics of 100BaseTX networking, including the use of RJ-45 connector and the access method of CA/CD. Like 100BaseTX, 1000BaseTX uses CAT 5e or CAT 6 unshielfed twisted - pair; the difference is that 100BaseTX runs over two pairs (four wires) while 1000BaseTX runs over four pairs (all eight wires).
10-Gigabit Ethernet :-
There are standards for 10-Gigabit Ethernet (10,000 Mbps) that have been developed that use fiber -optic cabling :
10GBaseSR :- Runs at 10 Gbps and uses "short-range" multimode fiber - optic cable, while has a maximum distance of 100 meters
10GBaseLR :- Runs at 10 Gbps and uses "long-rang" single fiber - optic cable, which has maximum distance of 10 kilometer.
10GBaseER:- Runs at 10 Gbps and uses "extra-long-range" single-mode fiber - optic cable, which has a maximum distance of 40 kilometers.
10GBaseT:- Runs at 10 Gbps using CAT 6 UTP cabling, which has a maximum distance of 100 meters
There are special WAN versions of 10-Gigabit Ethernet that use fber-optic cabling to connect to a SONET network.
10GBaseSW:- The 10-gigabit Ethernet standard for short-range, multimode fiber -optic cable, which has a maximum distance of 100 meters
10GBaseLW:- The 10-Gigabit Ethernet standard for long-range, single-mode fiber - optic cable, which has a maximum distance of 10 kilometer
10GBaseEW:- The 10-gigabit Ethernet standard for extended - range, single -mode fiber - optic cable, which has a distance of up to 40 kilometer
Token Ring :-
A big competitor to Ethernet in the past was Token Ring, which runs at 4 Mbps or 16 Mbps. Token Ring is a network architecture that uses a star ring topology (a hybrid, looking physically like a star but logically wired as a ring) and can use many forms of cables. IBM Token Ring can use CAT 3 or CAT 5 UTP cabling. Token Ring uses the token-passing access method. Looking at Token Ring networks today, you may wonder where the "ring" topology is, because the network appears to have a star topology. The reason this network architecture appears to use a star topology is that all hosts are connected to a central device that looks similar to a hub, but with Token Ring, this
device is called a motivation access unit (MAU or MSAU).
The ring is the internal communication path within the wiring. Token Ring uses token passing; it is impossible to have collisions in a token - passing environment, because the MAUs do not have collision to have collisions in a token-passing environment, because the MAUs do not have collisions lights as an Ethernet hub does (remember that Ethernet uses CSMA/CD and there is potential for collisions).
FDDI :- Fiber distributed data interface (FDDI) is a network architectures that uses fiber-optic cabling, token passing, and a ring topology, but FDDI also uses two counter - rotating rings for fault tolerance on the network . For more information on FDDIb.
Once again ,a table simmering the core facts is always useful when preparing for an exam. Table summarizes the popular network architecture. Be sure to review these before taking the Network + exam.
TabLe
Network architecture Summary
IEEE 802.3z=The IEEE 802.3z standard defines Gigabit Ethernet that runs over fiber-optic cabling or coaxial Cabling. There are three types of Gigabit Ethernet that fall under this standard :
1000BaseSX= The Gigabit Ethernet architecture that runs at 1000 Mbps over multimode fiber (MMF) optic cabling. This architecture supports distance up to 3 kilometer.
1000BaseSX :- The IEEE 802.3z standard define Gigabit Ethernet that runs over fiber - optic cabling or coaxial cabling. There are three types of Gigabit Ethernet that fall under this standard:
1000BaseLX:- The Gigabit Ethernet architecture that runs at 1000 Mbps over multimode fiber (MMF) optic cabling. This architecture is designed for short distances of up to 550 meters.
1000BaseCX :- The Gigabit Ethernet architecture that runs at 1000 Mbps over coaxial cable and supports distance of up to 25 meters.
IEEE 802.3ab:- The IEEE 802.3ab standard, known as 1000BaseTX, defines Gigabit Ethernet that runs over twisted - pair cabling and uses characteristics of 100BaseTX networking, including the use of RJ-45 connector and the access method of CA/CD. Like 100BaseTX, 1000BaseTX uses CAT 5e or CAT 6 unshielfed twisted - pair; the difference is that 100BaseTX runs over two pairs (four wires) while 1000BaseTX runs over four pairs (all eight wires).
10-Gigabit Ethernet :-
There are standards for 10-Gigabit Ethernet (10,000 Mbps) that have been developed that use fiber -optic cabling :
10GBaseSR :- Runs at 10 Gbps and uses "short-range" multimode fiber - optic cable, while has a maximum distance of 100 meters
10GBaseLR :- Runs at 10 Gbps and uses "long-rang" single fiber - optic cable, which has maximum distance of 10 kilometer.
10GBaseER:- Runs at 10 Gbps and uses "extra-long-range" single-mode fiber - optic cable, which has a maximum distance of 40 kilometers.
10GBaseT:- Runs at 10 Gbps using CAT 6 UTP cabling, which has a maximum distance of 100 meters
There are special WAN versions of 10-Gigabit Ethernet that use fber-optic cabling to connect to a SONET network.
10GBaseSW:- The 10-gigabit Ethernet standard for short-range, multimode fiber -optic cable, which has a maximum distance of 100 meters
10GBaseLW:- The 10-Gigabit Ethernet standard for long-range, single-mode fiber - optic cable, which has a maximum distance of 10 kilometer
10GBaseEW:- The 10-gigabit Ethernet standard for extended - range, single -mode fiber - optic cable, which has a distance of up to 40 kilometer
Token Ring :-
A big competitor to Ethernet in the past was Token Ring, which runs at 4 Mbps or 16 Mbps. Token Ring is a network architecture that uses a star ring topology (a hybrid, looking physically like a star but logically wired as a ring) and can use many forms of cables. IBM Token Ring can use CAT 3 or CAT 5 UTP cabling. Token Ring uses the token-passing access method. Looking at Token Ring networks today, you may wonder where the "ring" topology is, because the network appears to have a star topology. The reason this network architecture appears to use a star topology is that all hosts are connected to a central device that looks similar to a hub, but with Token Ring, this
device is called a motivation access unit (MAU or MSAU).
The ring is the internal communication path within the wiring. Token Ring uses token passing; it is impossible to have collisions in a token - passing environment, because the MAUs do not have collision to have collisions in a token-passing environment, because the MAUs do not have collisions lights as an Ethernet hub does (remember that Ethernet uses CSMA/CD and there is potential for collisions).
FDDI :- Fiber distributed data interface (FDDI) is a network architectures that uses fiber-optic cabling, token passing, and a ring topology, but FDDI also uses two counter - rotating rings for fault tolerance on the network . For more information on FDDIb.
Once again ,a table simmering the core facts is always useful when preparing for an exam. Table summarizes the popular network architecture. Be sure to review these before taking the Network + exam.
TabLe
Network architecture Summary
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