Congestion control Fast Recovery and Load Balancing in LAN

Abstract

To control the congestion in local area network (LAN) Spanning tree protocol (STP) is used. Spanning Tree Protocol (STP) is IEEE approved standard 802.1 d. STP block the redundant ports in switched layer-2 networks. STP takes 30 to 60 seconds for recovering a link. Rapid spanning tree protocol (RSTP) is used to make the fast recovery for uplinks and downlinks. RSTP makes a fast recovery in switched network and takes seem less time to recover a link. Virtual local area networks (VLANs) and Multi instance spanning tree protocol (MSTP) is used to make load balancing and control the flood of BPDU’s in local area switched network. Virtual-Local Area Network (VLAN’s) and Multi Instance Spanning-Tree Protocol (MSTP) are associated with each other and Provide load balancing in switched network.

Keywords: Spanning Tree Protocol (STP), Rapid Spanning Tree protocol (RSTP), Multi Instance Spanning Tree Protocol (MSTP), Virtual Local Area Network (VLAN), Bridge protocol data unit (BPDU), Switched Network.