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Switched topology Advantages/Disadvantages of a Switched topology
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| bet | 3/7 | | Sana | 24.12.2023 | | Hajmi | 2,5 Mb. | | #127796 |
Bog'liq Chapter 4 Network Topologies Advantages/Disadvantages of a Switched topology - Advantage:
- Can improve LAN performance:
- increase the aggregate bandwidth available throughout the network
- reducing the number of devices forced to share each segment of bandwidth
- Disadvantage:
- Large switched implementations do not isolate broadcasts
Daisy chains - Developed by serially interconnecting all the hubs of a network
- This simple approach uses ports on existing hubs for interconnecting the hubs
- Daisy chains are easily built and don’t require any special administrative skills
- Daisy chains were, historically, the interconnection method of choice for emerging, first-generation LANs
Daisy chains Disadvantage of Daisy chain - Increases the number of connections, and therefore the number of devices, on a LAN. Too many devices competing for the same amount of bandwidth can create collisions and quickly incapacitate a LAN
Hierarchies - Hierarchical topologies consist of more than one layer of hubs. Each layer serves a different network function
- The bottom tier is reserved for user station and server connectivity. Higher-level tiers provide aggregation of the user-level tier
- A hierarchical arrangement is best suited for medium-to-large-sized LANs that must be concerned with scalability of the network and with traffic aggregation
Hierarchical rings - Ring networks can be scaled up by interconnecting multiple rings in a hierarchical fashion
- User station and server connectivity can be provided by as many limited size rings as are necessary to provide the required level of performance
- A second-tier ring, either Token Ring or FDDI, can be used to interconnect all the user level rings and to provide aggregated access to the Wide Area Network (WAN)
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