ip subnetzeroip routingno ip domainlookupspanningtree mode pvstspanningtree extend systemidspanningtree vlan 200 priority 24576spanningtree vlan 201 priority 24576spanningtree vlan 202 priority 28672spanningtree vlan 203 priority 28672spanningtree vlan 204 priority 24576spanningtree vlan 205 priorit

本文着重讨论一些多层交换机qos的基本概念，以后将有相关内容的后续补充，希望能够帮助大家理解交换机的qos功能。1. 理解qos多层交换机使用InternetEngineering Task Force (IETF) DiffServ体系结构标准来实现qos. 这个体系结构在网络的边缘对进入的流量使用Layer 3 IP packets (ToS/DSCP)或者Layer 2 CoS 进行流量分类（Cl

ip subnetzeroip routingno ip domainlookupspanningtree mode pvstspanningtree extend systemidspanningtree vlan 200 priority 24576spanningtree vlan 201 priority 24576spanningtree vlan 202 priority 28672spanningtree vlan 203 priority 28672spanningtree vlan 204 priority 24576spanningtree vlan 205 priorit

classmap matchall testmatch ip precedence 5match accessgroup 101classmap matchall pervlanmatch vlan 10match classmap testpolicymap testclass pervlanset cos 5interface FastEthernet0/6 servicepolicy input testaccesslist 101 permit ip 10.1.1.0 0.0.0.255 20.1.1.0 0.0.0.255===========================

Understanding Voice VLAN The voice VLAN feature enables access ports to carry IPE: italic" voice traffic from an IP phone. The switch can connect to a Cisco7960 IP Phone and carry IP voice traffic. Because the sound quality of an IP phone call can deteriorate if the data is unevenly sent, the sw

Switch(config)# accesslist 2 permit 36.48.0.3 Switch(config)# accesslist 2 deny 36.48.0.0 0.0.255.255 Switch(config)# accesslist 2 permit 36.0.0.0 0.255.255.255 Switch(config)# interface gigabitethernet0/1 Switch(configif)# ip accessgroup 2 in Switch(config)# accesslist 102 permi

a. Layer 3 / IP Unicast Routing i. RIP ii. IGRP / EIGRP iii. OSPF iv. BGP v. HSRP vi. Distance Vector Multicast Routing Protocol (DVMRP) tunneling vii. Multicast Routing 1. PIM 2. IGMP 3. MVR Multicast VLAN Registration Protocol b. Security i. Gaining