| Token Ring Technology - *Token Ring is a "token-passing" technology and an alternative toEthernet's collision-detection method. * | |
*Network Protocol Type*
Local Area Network (LAN)
*Standards Supported*
- IEEE 802.5
- ISO 8802-5
- Token passing access Protocol
- Medium Access Control (MAC) Layer
- Physical Layer
*Operating Systems Supported*
Tru64 UNIX
OpenVMS VAX
OpenVMS Alpha
Windows 2000
Windows 95
Windows 98
Windows NT
Novell NetWare
SCO UnixWare
SCO OpenServer
OS/2
Windows for Workgroups
Description
===========
The Token Ring protocol was first developed by IBM. The Token Ring protocol
deals with the problem of collision, which is defined as a state where two
stations transmit at the same time. In order to avoid the situation of
collision there is a need to control the access to the network. This kind of
control is possible by the use of a control (permission) called token. The
token is passed from one station to another according to a set of rules. The
ring consists of ring stations and transmission medium. Data travels
sequentially from station to station. Only the station in possession of the
token is allowed to transmit data. Each station repeats the data, checks for
errors, and copies the data if appropriate. When the data is returned to the
sending station, it removes it from the ring.
*Features*
==========
Supports priorities in transmission implemented by setting
priority bits in the Token Ring Frame.
First and second layer protocol in the OSI (Open Systems
Interconnection) seven layer model.
Capable of 4 Mbs. and 16 Mbs. data transmission rate
Increases bandwidth
Requires no end station changes
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