Rahul Khadse
There are three methods to perform LAN segmentation
(1) LAN segmentation using bridge.
(2) LAN segmentation using switches.
(3) LAN segmentation using Routers
LAN segmentation using bridge.
Working of Bridge: -
Working of Bridge explains in following steps: -
(i) Bridge can receives a frame in the buffer memory.
(ii) The source MAC address of frame this stored to the bridging table.
(iii) According to the destination MAC address the frame will be forwarded or drop .
(a) If destination MAC address of the frame is known then frame is forwarded to the particular port .
(b) If destination MAC address is unknown by bridging table then frame is forwarded to the all port except receiving port.
(c) If destination MAC address is broadcast MAC address ff.ff.ff.ff.ff.ff.
(d) If destination MAC address exist on the same port from which port received then frame is dropped .
Collision domain - A group of pc, in which collision can occur, is called a collision.
Broadcast domain - A group of pc in which broadcast message is delivered is called broadcast domain.
LAN segmentation using Switches
Due to perform Lan segmentation using switches. We have to remove hubs from the network and replace hub with switches the working of switches. The working of switch is exactly like a bridge. A multiport bridge can be used as a bridge
Switch’s working is same like bridge Advantages: -
(1) LAN segmentation using bridge.
(2) LAN segmentation using switches.
(3) LAN segmentation using Routers
LAN segmentation using bridge.
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| Only HUB |
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| NEW |
Working of Bridge explains in following steps: -
(i) Bridge can receives a frame in the buffer memory.
(ii) The source MAC address of frame this stored to the bridging table.
(iii) According to the destination MAC address the frame will be forwarded or drop .
(a) If destination MAC address of the frame is known then frame is forwarded to the particular port .
(b) If destination MAC address is unknown by bridging table then frame is forwarded to the all port except receiving port.
(c) If destination MAC address is broadcast MAC address ff.ff.ff.ff.ff.ff.
(d) If destination MAC address exist on the same port from which port received then frame is dropped .
Collision domain - A group of pc, in which collision can occur, is called a collision.
Broadcast domain - A group of pc in which broadcast message is delivered is called broadcast domain.
LAN segmentation using Switches
Due to perform Lan segmentation using switches. We have to remove hubs from the network and replace hub with switches the working of switches. The working of switch is exactly like a bridge. A multiport bridge can be used as a bridge
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- (1) Bandwidth will not be shared and overall throughput will depend on wire speed of the switch. Wire speed is also called switching capacity measured in mbps or gbps (Minimum port on switches = 4 & Maximum port on switches = 48)
- Any time access technology
- One to one communication so that network will be more secures.
- Switches will perform micro segmentation and no collision will occur in Network.
If we are facing high concession in the n/w due to the large number of broadcast then we can divide broadcast domain of network. So that number of broadcast message will Reduced.
Exist: -
Router is unicast.
We have to install router between multiple switches to divide the broadcast domain. Each
broadcast domain has to used different network address and router will provide inter network communication between them.
Posted in: CCNA
