
Content
20. QOS CONFIGURATION.........................................................................129
20.1 Brief Introduction to QoS ............................................................................................ 129
20.1.1 Traffic....................................................................................................................... 129
20.1.2 Traffic Classification................................................................................................. 129
20.1.3 Priority...................................................................................................................... 130
20.1.4 Access Control List.................................................................................................. 132
20.1.5 Packet Filtration....................................................................................................... 132
20.1.6 Flow Monitor............................................................................................................ 132
20.1.7 Interface Speed Limitation....................................................................................... 132
20.1.8 Redirection............................................................................................................... 133
20.1.9 Priority Mark............................................................................................................. 133
20.1.10 Choose Interface Outputting Queue for Packet .................................................... 133
20.1.11 Queue scheduler.................................................................................................... 133
20.1.12 Cos-map Relationship of Hardware Priority Queue and Priority of IEEE802.1p
Protocol.................................................................................................................................... 134
20.1.13 Slow Mirror............................................................................................................. 134
20.1.14 Statistics Based on Flow........................................................................................ 134
20.1.15 Copy Packet to CPU.............................................................................................. 134
20.2 QOS Configuration....................................................................................................... 134
20.2.1 Configuring Flow Monitor......................................................................................... 134
20.2.2 Configure Two Rate Three Color Marker................................................................. 135
20.2.3 Configuring Interface Line Rate............................................................................... 135
20.2.4 Configuring Packet Redirection............................................................................... 136
20.2.5 Configuring Traffic Copy to CPU ............................................................................. 136
20.2.6 Configuring Traffic Priority....................................................................................... 136
20.2.7 Configuring Queue-Scheduler................................................................................. 136
20.2.8 Configuring Cos-map Relationship of Hardware Priority Queue and Priority of
IEEE802.1p Protocol ............................................................................................................... 137
20.2.9 Configuring Mapping Relationship between DSCP and 8 Priority in IEEE 802.1p . 138
20.2.10 Configuring Flow Statistic ...................................................................................... 138
20.2.11 Configuring Flow Mirror ......................................................................................... 139
20.2.12 Displaying and Maintain QoS ................................................................................ 139
21. STP CONFIGURATION..........................................................................140
21.1 STP Overview................................................................................................................ 140
21.1.1 Function of STP....................................................................................................... 140
21.1.2 Protocol Packets of STP.......................................................................................... 140
21.1.3 Basic concepts in STP............................................................................................. 140
21.1.4 Spanning-Tree Interface States............................................................................... 141
21.2 How STP Works............................................................................................................ 142
21.3 Implement RSTP on Ethernet Switch ......................................................................... 148
21.4 Configure RSTP............................................................................................................ 149