构建新一代QOS设计与配置(3)

四、园区网QOS典型配置

1、语音流量的Qos配置

第一步　在整个交换机上启用Qos

3550G#config t

3550G(config)#mls qos

第二步　配置CoS-ToS map

3550G(config)#mls qos map cos-dscp 0 8 16 26 34 46 48 56

第三步　LLQ配置部分。启用PQ，并将CoS 5映射到pq 4

3550Gconfig)#interface range g 0/1 - 12

3550G(config-if-range)#PRiority-queue out

3550G(config-if-range)#wrr-queue cos-map 4 5

第四步　创建ACL并标记语音流量及语音控制流量

3550G(config)#ip access-list extended VOICE

3550G(config-ext-nacl)#remark Match the UDP ports that VoIP uses for Bearer

Traffic

3550G(config-ext-nacl)#permit udp any any range 16384 32767

3550G(config)#ip access-list extended VOICE-CONTROL

3550G(config-ext-nacl)#remark Match VoIP Control Traffic

3550G(config-ext-nacl)#remark SCCP

3550G(config-ext-nacl)#permit tcp any any range 2000 2002

3550G(config-ext-nacl)#remark H323 Fast Start

3550G(config-ext-nacl)#permit tcp any any eq 1720

3550G(config-ext-nacl)#remark H323 Slow Start

3550G(config-ext-nacl)#permit tcp any any range 11000 11999

3550G(config-ext-nacl)#remark H323 MGCP

3550G(config-ext-nacl)#permit udp any any eq 2427

第五步　创建类

3550G(config)#class-map match-all VOICE

3550G(config-cmap)#description VOIP Bearer Traffic

3550G(config-cmap)#match access-group name VOICE

3550G(config)#class-map match-all VOICE-CONTROL

3550G(config-cmap)#description VOIP Control Traffic

3550G(config-cmap)#match access-group name VOICE-CONTROL

第六步　创policy-map并配置dscp PHB标签

3550G(config)#policy-map ACCESS-C3550-LAN-EDGE-IN

3550G(config-pmap)#class VOICE-CONTROL

3550G(config-pmap-c)#set ip dscp 26

3550G(config-pmap)#class VOICE

3550G(config-pmap-c)#set ip dscp 46

第七步　将policy-map应用到接口上

3550G(config-if)#service-policy input ACCESS-C3550-LAN-EDGE-IN

2、呼叫控制(基于catos)

SKINny:

set qos enable

set qos acl ip ACL_IP-PHONES DSCP 26 tcp any any range 2000 2002

set qos acl ip ACL_IP-PHONES trust-cos ip any any

set qos acl ip ACL_VOIP_CONTROL dscp 26 tcp any any range 2000 2002

set port qos 5/1-58 trust trust-cos

set port qos 5/1-48 vlan-based

set port qos 5/1-48 trust-ext untrusted

set port qos 4/2 port-based ///4/2接的CCM

commit qos acl all

set qos acl map ACL_IP-PHONES 110

set qos acl map ACL_VOIP_CONTROL 4/2

H323：

set qos acl ip acl-voip-control dscp 26 tcp any any eq 1720

set qos acl ip acl-voip-control dscp 26 tcp any any ramge 11000 11999

set port qos 4/2 port-based

set port qos 4/3 port-based ///H323 GK

commit qos acl acl-voip-control

set qos acl map acl-voip-control 4/2

set qos acl map acl-voip-control 4/3

MGCP:

set qos acl ip acl-voip-control dscp 26 tcp any any eq 2427

set port qos 4/2 port-based

set port qos 4/4 port-based ///MGCP GK

commit qos acl acl-voip-control

set qos acl map acl-voip-control 4/2

set qos acl map acl-voip-control 4/4

3、要害业务数据(基于IOS)

#conf t

(config)#qos map cos 3 to dscp 26

(config)#qos map cos 4 to dscp 34

(config)#qos map cos 5 to dscp 46

(config)#int fa 3/4

(config-if)#tx-queue 3

(config-if)#priority high

(config)#ip access-list extended GOLD-DATA

(config-ext-nacl)#remark Match IP Address of the application server

(config-ext-nacl)#permit ip any host 192.168.100.1

(config-ext-nacl)#permit ip host 192.168.100.1 any

(config)#class-map match-all GOLD-DATA

(config-cmap)#description Mission Critical Traffic

(config-cmap)#match access-group name GOLD-DATA

(config)#policy-map ACCESS-C4006-LAN-EDGE-IN

(config-pmap)#description Set DSCP PerHopBehavior Label for MissionCritical Traffic

(config-pmap)#class GOLD-DATA

(config-pmap-c)#set ip dscp 18

(config)#int fa 3/4

(config-if)#service-policy input ACCESS-C4006-LAN-EDGE-IN

(续下篇--构建新一代QOS设计与配置(4))