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AR18寬帶路由器NAT+QoS典型應(yīng)用和配置

網(wǎng)絡(luò) 路由交換
路由器是我們常用到的路由設(shè)備,那么我們?cè)撊绾芜M(jìn)行對(duì)其N(xiāo)AT+QoS的應(yīng)用和配置呢?相信看過(guò)此文你會(huì)對(duì)此設(shè)置有個(gè)詳細(xì)的了解。

本文主要給大家介紹了對(duì)于寬帶路由器NAT+QoS的應(yīng)用和配置我們要進(jìn)行的具體操作,同時(shí)我們?cè)谂渲眠^(guò)程中遇到問(wèn)題怎樣解決,詳細(xì)此文會(huì)對(duì)你有所幫助。

應(yīng)用說(shuō)明

目標(biāo):在AR1830上同時(shí)啟用NAT和QOS,從PC1發(fā)送的數(shù)據(jù)流定義為Gold(優(yōu)先級(jí)為5),至少要保證50%的ADSL帶寬;從PC2發(fā)送的數(shù)據(jù)流定義為multimedia(優(yōu)先級(jí)3),至少要保證20%的ADSL帶寬;網(wǎng)管(優(yōu)先級(jí)7)要保證10%帶寬,但是在網(wǎng)絡(luò)不忙的時(shí)候,  
 
各個(gè)數(shù)據(jù)流都可以超過(guò)自己所定義的帶寬。

實(shí)現(xiàn):首先是在以太網(wǎng)入口上,對(duì)Gold,Multimedia做識(shí)別并打IP-precedence,對(duì)于網(wǎng)管流量,配置classifier來(lái)匹配源地址是Lo0口的數(shù)據(jù)包,然后在上行口(adsl口)先配置car來(lái)打IP-precedence,并同時(shí)配置EF隊(duì)列保證優(yōu)先轉(zhuǎn)發(fā)。對(duì)在以太網(wǎng)入口打過(guò)IP-precedence的Multimedia和gold流,在上行口上做AF隊(duì)列來(lái)保證帶寬。 這里要注意的一點(diǎn)是,在出接口上要么只能配置百分比帶寬,要么只能配置指定數(shù)字帶寬,不能如客戶(hù)要求的那樣配置成既有百分比又有數(shù)據(jù)帶寬(如25%/25%/16K),所以需要預(yù)先知道上行帶寬,然后自己計(jì)算一下,再確認(rèn)是配置成百分比還是數(shù)字帶寬。

另外,ADSL接口的QoS帶寬根據(jù)國(guó)際標(biāo)準(zhǔn)均為640bps。

注意事項(xiàng)
1、 QoS CBQ只能應(yīng)用在ATM接口的PVC下,不可以直接用在ATM接口或Dialer口;

詳細(xì)配置
AR18-30(PPPoE Client)配置:

dis cur

# 

sysname Router

# 

dialer-rule 1 ip permit

# 

traffic classifier gold operator and

if-match ip-precedence 5 

traffic classifier snmp operator and

if-match acl 3003 

traffic classifier multimedia operator and 

if-match ip-precedence 3 

# 

traffic behavior gold 

queue af bandwidth pct 50

traffic behavior snmp 

queue af bandwidth pct 10

traffic behavior multimedia

queue af bandwidth pct 20

# 

qos policy policy1 

classifier multimedia behavior multimedia 

classifier gold behavior gold 

classifier snmp behavior snmp 

# 

interface Dialer1 

link-protocol ppp 

mtu 1450 

ip address ppp-negotiate 

dialer user test 

dialer-group 1

dialer bundle 1

nat outbound 3000 

# 

interface Ethernet1/0 

ip address 202.150.1.31 255.255.255.0 

qos car inbound acl 3001 cir 100000000 cbs 100000000 ebs 0 green remark-prec-pa

ss 5 red remark-prec-pass 5

qos car inbound acl 3002 cir 100000000 cbs 100000000 ebs 0 green remark-prec-pa

ss 3 red remark-prec-pass 3

# 

interface Atm2/0

pvc 4/33 

map bridge Virtual-Ethernet1 

qos reserved-bandwidth pct 100

qos apply policy policy1 outbound

qos car outbound acl 3003 cir 16000 cbs 15000 ebs 0 green remark-prec-pass 7 re

d remark-prec-pass 7

# 

interface Virtual-Ethernet1

pppoe-client dial-bundle-number 1 

# 

interface NULL0

# 

interface LoopBack0

ip address 202.150.10.1 255.255.255.255

# 

acl number 3000

rule 0 permit ip source 202.150.1.0 0.0.0.255 

rule 1 deny ip

acl number 3001

rule 0 permit ip source 202.150.1.1 0 

acl number 3002

rule 0 permit ip source 202.150.1.2 0 

acl number 3003

rule 0 permit ip source 202.150.10.1 0

# 

ip route-static 0.0.0.0 0.0.0.0 Dialer 1 preference 60

# 

user-interface con 0

idle-timeout 0 0 

user-interface vty 0 4 

authentication-mode none 

user privilege level 3

# 

return 

AR4640(PPPoE Server)配置:

dis cur

# 

sysname AR46-40

# 

local-user test password simple test 

# 

ip pool 143 202.143.1.100 202.143.1.200

# 

interface Virtual-Template33

ppp authentication-mode pap scheme default

ppp accounting scheme default

ip address 202.143.1.46 255.255.255.0 

remote address pool 143 

# 

interface Aux0 

async mode flow
 

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責(zé)任編輯:chenqingxiang 來(lái)源: IT168
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