Cisco Switch Four Main feature that Cause Delay

1.Spanning Tree Protocol(STP)
2.EtherChannel Negotiation
3.Trunking Negotiation
4.Link speed/Duplex Negotiation Between the switch and the workstation
The Greatest delay is Spanning Tree Protocol
The Least Delay is Speed/Duplex Negotiation

After a port on the switch has Linked and Joined the bridge group,
STP runs on that port. A port that runs STP can be in one of five states:
1.Blocking
2.Listening
3.Learning
4.Forwarding
5.Disabled

STP dictates that the port starts out blocking, and then immediately moves through the listening and learning phases. By default, the port spends <> and <<15 seconds learning>>. During the listening state, the switch tries to determine where the port fits in the spanning tree topology. The switch especially wants to know whether this port is part of a physical loop. If the port is part of a loop, the port can be chosen to go into blocking mode. The blocking mode means that the port does not send or receive user data in order to eliminate loops. If the port is not part of a loop, the port proceeds to the learning state, in which the port learns which MAC addresses live off this port. <>