交換機(jī)的情況: IOS版本：12.1.8EA1c EMI版 Switch#sh run Building configuration...
Current configuration : 1835 bytes ! version 12.1 no service pad service timestamps debug uptime service timestamps log uptime no service passWord-encryption ! hostname Switch ! ! ip subnet-zero ip routing mls qos ! class-map match-all 64k match access-group 110 ! ! policy-map yikai class 64k police 512000 32000 exceed-action drop ! ! spanning-tree extend system-id ! ! ! interface FastEthernet0/1 switchport mode access no ip address service-policy input yikai ! interface FastEthernet0/2 no ip address ! interface FastEthernet0/3 no ip address ! interface FastEthernet0/4 no ip address ! interface FastEthernet0/5 no ip address ! interface FastEthernet0/6 no ip address ! interface FastEthernet0/7 no ip address ! interface FastEthernet0/8 no ip address ! interface FastEthernet0/9 no ip address ! interface FastEthernet0/10 no ip address ! interface FastEthernet0/11 no ip address ! interface FastEthernet0/12 no ip address ! interface FastEthernet0/13 no ip address ! interface FastEthernet0/14 no ip address ! interface FastEthernet0/15 no ip address ! interface FastEthernet0/16 no ip address ! interface FastEthernet0/17 no ip address ! interface FastEthernet0/18 no ip address ! interface FastEthernet0/19 no ip address ! interface FastEthernet0/20 no ip address ! interface FastEthernet0/21 no ip address ! interface FastEthernet0/22 no ip address ! interface FastEthernet0/23 no ip address ! interface FastEthernet0/24 no switchport ip address 192.168.2.1 255.255.255.0 service-policy input yikai ! interface GigabitEthernet0/1 no ip address ! interface GigabitEthernet0/2 no ip address ! interface Vlan1 ip address 192.168.1.222 255.255.255.0 ! ip classless ip http server ! access-list 110 permit ip host 192.168.2.20 any access-list 110 permit ip any any ! line con 0 line vty 0 4 login line vty 5 15 login ! end
此時(shí)在客戶機(jī)pc2從pc1上拷貝文件,大約40M 時(shí)間大約:12分鐘
Switch#sh mls qos interface f 0/1 sta FastEthernet0/1 Ingress dscp: incoming no_change classified policed dropped (in bytes) Others: 385021895 385021895 0 0 12197478 Egress dscp: incoming no_change classified policed dropped (in bytes) Others: 9553871 n/a n/a 0 0
Switch#sh mls qos interface f 0/1 sta FastEthernet0/1 Ingress dscp: incoming no_change classified policed dropped (in bytes) Others: 385369437 385369437 0 0 12259540 Egress dscp: incoming no_change classified policed dropped (in bytes) Others: 9562103 n/a n/a 0 0
從中發(fā)現(xiàn)有大量的dropped,且增加很快. 假如在interface f 0/1 no service-map input yikai 則沒(méi)有應(yīng)用policy-map yikai ,此時(shí)同樣的文件傳速速度很快, 大約只需要3分鐘. 可見(jiàn): {在3550emi上面可以實(shí)現(xiàn)端口限速,并且不局限在1M}
