IEEE 802.5
try to do assignments at your own.......!
Engr. ARSLAN RAFIQUE
Topology: physical ring of trees, logical ring
bus topology, ring topology
How does Token Bus (IEEE 802.4) enforce discipline on a logical ring topology? ----
SONET use RING physical topology and TOKEN logical topology. As simple as that. Logical topology deals with the data transmission. Physical topology deals with how the network is connected physically , BUS, RING, STAR and the like.
Ring and star are two.
token ring uses a physical star and a logical ring ,while FDDI uses a physical star/ring and a logical ring.
ring/hybrid
Token Ring
Also called signal topology. Every LAN has a topology, or the way that the devices on a network are arranged and how they communicate with each other. The way that the workstations are connected to the network through the actual cables that transmit data -- the physical structure of the network -- is called the physical topology. The logical topology, in contrast, is the way that the signals act on the network media, or the way that the data passes through the network from one device to the next without regard to the physical interconnection of the devices. Logical topologies are bound to the network protocols that direct how the data moves across a network. The Ethernet protocol is a common logical bus topology protocol. LocalTalk is a common logical bus or star topology protocol. IBM's Token Ring is a common logical ring topology protocol. A network's logical topology is not necessarily the same as its physical topology. For example, twisted pair Ethernet is a logical bus topology in a physical star topology layout. While IBM's Token Ring is a logical ring topology, it is physically set up in a star topology.
Ring Topology How to run Ring topology
Ring topology is the passive topology in computer networks
Ring topology is an active topology because each station has to recreate the packet.