09-23-2005 06:25 AM - edited 03-03-2019 12:09 AM
i want to know about Normal link puls(NLP) and FLP...
which basic mechanisum used by switch for negotiation of speed and duplex matching?1
09-23-2005 07:00 AM
For starters try this link. This is from a Cisco perspective.
Or look up IEEE 802.3u for 10/100 or, 802.3z for gigabit.
09-23-2005 07:12 AM
Hello,
as I understand it, NLP is just a basic Ethernet connectivity check used for 10BaseT (non-autonegotiate) devices, while FLP is an enhanced version of NLP, used in autonegotiation. Whenever autonegotiation is involved, FLP's are being sent. When a FLP capable device detects NLP's from a 10BaseT device, it stops sending FLP's and reverts to NLP's.
Check the following document for a detailed explanation:
Advanced Ethernet: Understanding link, auto-negotiation and auto-sense
http://inetd.com/CriticalNetworks/resources/index.html
HTH,
GP
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