Ethernet Cabling
- Created by: alfiec2002
- Created on: 15-01-24 13:51
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- Ethernet Cabling
- Layer 2 Switches:
- -Problems created by contention can be resolved by switching from shared to switched ethernet
- -Ethernet Layer 2 switch performs the same sort of function as a bridge, each port is a separate collision domain
- -Micro segmentation is the creation of a bridge which creates a point to point link between two nodes
- Repeaters and Media Converters
- Attenuation of signals passing over copper or fibre cable imposes a distance limitation on links
- A repeater overcomes the distance limitation by boosting the signal
- A repeater works at the physical layer
- When a repeater connects two cable segments, a media converter is used to transition from one cable to another
- SMF & MMF
- A single mode fibre (SMF) to a twisted pair = Powered Converters. This changes light signals from SMF to electrical signals to twisted pair
- MulitMode Fibre (MMF) to Twisted Pair - A different media converter is needed to convert light over MMF signals
- SMF to MMF: Passive unpowered devices convert between two cabling types
- Hubs
- Hubs act like a multiport repeater so that every port receives transmissions
- Works at the physical layer
- When ethernet is wired with hub there needs to be a computing host with the interface on the intermediate system
- End system is reffered to as MDI (Medium dependant interface)
- Bridges
- Ethernet bridge works at the data link layer
- Establishes several separate physical network segments while keeping all nodes in the same logical network. Reduces collisions
- Structed Cabling
- 1. Work Area- User equipment is located and connected to network wall part
- 2. Horizontal - Connects work area to nearest cross connect
- 3.Backbone Cabling - Connects horizontal cross converts to the main cross connect
- 4. Telecoms Room- Termination point for the horizontal cabling, contains the main or intermediate cross connects
- 5. Entrance facilities: Special types of equipment marking the point at which externating cables is joined to internals. Required to join interbuilding comms
- 4. Telecoms Room- Termination point for the horizontal cabling, contains the main or intermediate cross connects
- 3.Backbone Cabling - Connects horizontal cross converts to the main cross connect
- 2. Horizontal - Connects work area to nearest cross connect
- 1. Work Area- User equipment is located and connected to network wall part
- Cable Management
- 66 Block - Older style distribution frame. 50 rows of 41DC terminals
- 110 Block - Distribution frame supporting 100mHZ operation. Arranged horizontally so it has better density
- Bix and Krone- Use a single module. IPCs angled differently requiring a different termination blade
- Patch Panel - To simply MAC, a patch panel is a type of distribution block with IDCs on one side
- Layer 2 Switches:
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