QoS实验配置详解

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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 anyR2(config)#access-list 101 permit eigrp any anyR2(config)#access-list 102 permit ip any 192.168.0.1 0.0.0.0R2(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 23R2(config)#access-list 103 permit tcp any host 192.168.0.1 eq 21R2(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 200R2(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 102R2(config)#queue-list 1 protocol ip 3 list 103R2(config)#queue-list 1 protocol ip 4 list 104R2(config)#queue-list 1 protocol ip 5 list 105

3 将CQ应用到接口

R2(config)#int s0R2(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 Args1 1 protocol ip list 1011 2 protocol ip list 1021 3 protocol ip list 1031 4 protocol ip list 1041 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 ripR1(config)#int s0R1(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 Args1 low protocol ip list-1001 high protocol ip udp port rip

R1#sh ip int s0Serial0 is administratively down, line protocol is down Internet protocol processing disabledR1#sh int s0Serial0 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 0.0.0.0R1(config)#priority-list 2 protocol ip medium list 3R1(config)#access-list 3 deny 192.168.0.1 0.0.0.0R1(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 ftpR1(config)#priority-list 2 protocol ip low tcp ftp-data

R1(config)#int s1R1(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 Args2 high protocol ip list 22 medium protocol ip list 32 normal protocol ip tcp port www2 low protocol ip tcp port ftp2 low protocol ip tcp port ftp-data

QoS---CBWFQ（基于类分配带宽）

CBWFQ（基于类分配带宽）基本配置

实验要求：给上一个实验所定义的3种流量，QQ，SMTP，FTP分配不同的带宽

1 定义流量（直接调用上一个实验的配置）

R4(config)#class-map QQR4(config-cmap)#match access-group name QQ //匹配一个名为QQ的命名ACLR4(config-cmap)#exiR4(config)#ip access-list extended QQR4(config-ext-nacl)#permit ip any 61.172.240.0 0.0.0.255R4(config-ext-nacl)#permit udp any any eq 4000 R4(config-ext-nacl)#permit udp any any eq 8000R4(config-ext-nacl)#exi

R4(config)#class-map smtpR4(config-cmap)#match access-group 100R4(config-cmap)#exiR4(config)#access-list 100 permit tcp any any eq smtp

R4(config)#class-map ftpR4(config-cmap)#match access-group 101R4(config-cmap)#exiR4(config)#access-list 101 permit tcp any any eq 20R4(config)#access-list 101 permit tcp any any eq 21

2 定义策略

R4(config)#policy-map CBWFQR4(config-pmap)#class QQR4(config-pmap-c)#bandwidth percent 5 //为类型为QQ的流量分配百分之五的带宽R4(config-pmap)#class smtpR4(config-pmap-c)#bandwidth percent 25R4(config-pmap)#class ftpR4(config-pmap-c)#bandwidth percent 20R4(config-pmap-c)#exi

3 应用到接口上

R4(config)#int s0R4(config-if)#service-policy output CBWFQ

4 验证

R4#sh policy-map //查看策略 Policy Map wy Class QQ police cir 10000 bc 1500 conform-action drop exceed-action drop Class smtp police cir 10000 bc 1500 conform-action drop exceed-action drop Class ftp police cir 10000 bc 1500 conform-action drop exceed-action drop

Policy Map CBWFQ Class QQ Bandwidth 5 (%) Max Threshold 64 (packets) Class smtp Bandwidth 25 (%) Max Threshold 64 (packets) Class ftp Bandwidth 20 (%) Max Threshold 64 (packets)