Cisco路由器QoS配置实例详解

QoS---CQ（定制队列）

学习CQ

（定制队列）的配置；本实验首先用ACL定义一些流量。然后再将这些流量进行先后排队，最后将排好队的流量策略应用到接口上

1 过滤流量

R2(config)#access-list 101 permit ospf any any

R2(config)#access-list 101 permit eigrp any any

R2(config)#access-list 102 permit ip any 192.168.0.1 0.0.0.0

R2(config)#access-list 102 permit ip host 192.168.0.1 any

R2(config)#access-list 103 permit tcp any host 192.168.0.1 eq 23

R2(config)#access-list 103 permit tcp any host 192.168.0.1 eq 21

R2(config)#access-list 103 permit tcp any host 192.168.0.1 eq 20

R2(config)#access-list 104 permit udp any lt 200 any lt 200

R2(config)#access-list 104 permit tcp any range 135 139 any range 135 139

R2(config)#access-list 105 permit udp any range 16333 35252 any range 16333 35252

2 队列排序

R2(config)#queue-list 1 protocol ip 1 list 101 //将与List101匹配的流量排在第一位R2(config)#queue-list 1 protocol ip 2 list 102

R2(config)#queue-list 1 protocol ip 3 list 103

R2(config)#queue-list 1 protocol ip 4 list 104

R2(config)#queue-list 1 protocol ip 5 list 105

3 将CQ应用到接口

R2(config)#int s0

R2(config-if)#custom-queue-list 1 //将这个定制好的队列应用到接口上

4 检验

R2#sh queueing //查看队列

Current fair queue configuration:

Interface Discard Dynamic Reserved Link Priority

threshold queues queues queues queues

BRI0 64 16 0 8 1

BRI0:1 64 16 0 8 1

BRI0:2 64 16 0 8 1

Serial1 64 256 0 8 1

Current DLCI priority queue configuration:

Current priority queue configuration:

Current custom queue configuration:

List Queue Args

1 1 protocol ip list 101

1 2 protocol ip list 102

1 3 protocol ip list 103

1 4 protocol ip list 104

1 5 protocol ip list 105

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