Cisco路由器QoS配置详解-过滤流量和队列排序（二）

该文章讲述了将udp协议的16333端口至35252端口都设为低优先级.

QoS---PQ1
1 将 udp协议的16333端口至35252端口都设为低优先级
2 将rip设为高优先级
R1(config)#priority-list 1 protocol ip low list 100      //建立优先级列表1，将与access-list 100匹配的流量设为低优先级
R1(config)#access-list 100 permit udp any range 16333 35252 any range 16333 35252      //range命令是设定一个端口范围
R1(config)#priority-list 1 protocol ip high udp rip
R1(config)#int s0
R1(config-if)#priority-group 1     //将优先级列表1应用到接口S0上
2 验证
R1#sh queueing
Current fair queue configuration:
Interface     Discard         Dynamic        Reserved
                 threshold    queue count    queue count
Serial1           64                256                   0
Current priority queue configuration:
List      Queue   Args
1       low         protocol ip         list-100
1       high       protocol ip           udp port rip
R1#sh ip int s0
Serial0 is administratively down,line protocol is down
Internet protocol processing disabled
R1#sh int s0
Serial0 is administratively down, line protocol is down
Hardware is HD64570
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output 01:37:44, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 159
Queueing strategy: priority-list 1
Output queue (queue priority: size/max/drops):
high: 0/20/0, medium: 0/40/0, normal: 0/60/159, low: 0/80/0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets put, 52588119 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets, 52588444 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
6 carrier transitions
DCD=down DSR=down DTR=down RTS=down CTS=down

QoS----PQ2
1 将主机192.168.0.1设为最高优先级
2 将192.168.0.0/24网段下的其他主机设为中等优先级
3 将所有http流量设为普通优先级
4 将所有ftp流量设为低优先级
配置如下：
R1(config)#priority-list 2 protocol ip high list 2 //建立优先级列表2 ，将与access-list 2匹配的流量定为高优先级
R1(config)#access-list 2 permit 192.168.0.1 0.0.0.0
R1(config)#priority-list 2 protocol ip medium list 3
R1(config)#access-list 3 deny 192.168.0.1 0.0.0.0
R1(config)#access-list 3 permit 192.168.0.0 0.0.0.255
R1(config)#priority-list 2 protocol ip normal tcp www
R1(config)#priority-list 2 protocol ip low tcp ftp
R1(config)#priority-list 2 protocol ip low tcp ftp-data
R1(config)#int s1
R1(config-if)#priority-group 2     //在接口S1上应用该优先级列表
R1#sh queueing //查看队列
Current fair queue configuration:
Current priority queue configuration:
List           Queue            Args
2     high protocol ip         list 2
2     medium protocol       ip list 3
2     normal protocol ip     tcp port www
2     low protocol ip tcp     port ftp
2     low protocol ip tcp     port ftp-data