PPP vs HDLC and L3 switch vs Router

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Difference between PPP and HDLC :
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1 . Authentication :
PPP supports the authentication and HDLC does not support the authentication

2 . Fragmentation Handling :
PPP handles the fragmented packets in better way . Jitter can be controlled more effectively by PPP

3 . Compression Support :
PPP supports the compression and HDLC does not support the compression

4 . Standard :
PPP is OSI standard protocol and HDLC is cisco proprietary protocol

5 . Deployment :
PPP is used in async dial up networks . eg PPPoE , PPPoA . So it is used in LAN
HDLC is used in point to point serial links. It is used in WAN


Difference between L3 switch and Router :
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1 . Switching speed :
L3 Switch does the hardware switching using ASIC . So it is faster .
Router does the software switching using microprocessors and device drivers. So it is comparatively slower than switch in LAN

2 . Physical component Support :
L3 switch has only ethernet ports and supports only ethernet traffic .
Router has the interfaces of many carrier protocols such as ATM , Ethernet , POS . It needs to support encapsulation from one carrier to another carrier

3 . Deployment :
L3 switch is deployed in LAN . Router is deployed in WAN .

4 . Broadcast :
Router creates multiple collision and broadcast domains .
L3 Switch create one broadcast and multiple collision domain based on the configuration .



Note :
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