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基于Cat 4908-l3和Cat 3500園區(qū)網(wǎng)實(shí)例1

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1.說(shuō)明
Cisco的4908-l3的配置比較繁雜 ， 通過(guò)IRB來(lái)實(shí)現(xiàn)不同橋接組之間的通訊 可以與trunk互連 但是 ， 要對(duì)每個(gè)單獨(dú)的橋接組進(jìn)行封裝 。本實(shí)例中主要介紹在一個(gè)基于4908為中心 ， 3500為二級(jí)交換機(jī)的園區(qū)網(wǎng)方案設(shè)計(jì)以及每個(gè)設(shè)備的調(diào)試過(guò)程等 。著重介紹4908的配置過(guò)程 至于3500的配置請(qǐng)見(jiàn) 基本配置欄目中 關(guān)于 3500全系列配置的文章 。在此 ， 不贅述！
　至于vlan分配等 ， 通過(guò)基本配置自己體會(huì)吧 呵呵！
2.拓?fù)鋱D

3.4908_Center_A 配置
User Access Verification
PassWord:
Password:
Center_A>en
Password:
Center_A#sho run
Building configuration...
Current configuration:
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname Center_A
enable secret 5 $1$OHq9$9XvRCkMWcYtsC4glw.NYG.
enable password cisco
ip subnet-zero
no ip domain-lookup
bridge irb (啟用IRB 有點(diǎn)兒象 Ip routing)
!
interface GigabitEthernet1
no ip address
no ip directed-broadcast
對(duì)物理端口不做配置 ， 通過(guò)子接口進(jìn)行封裝 。從下面對(duì)子接口的封裝可以看出G1下面有三個(gè)bridge group (1、40、50)
interface GigabitEthernet1.1
encapsulation isl 1
no ip redirects
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet1.40
encapsulation isl 40
no ip redirects
no ip directed-broadcast
bridge-group 40
interface GigabitEthernet1.50
encapsulation isl 50
no ip redirects
no ip directed-broadcast
bridge-group 50
接著進(jìn)入g2的配置
interface GigabitEthernet2
no ip address
no ip directed-broadcast
interface GigabitEthernet2.1
encapsulation isl 1
no ip redirects
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet2.10
encapsulation isl 10
no ip redirects
no ip directed-broadcast
bridge-group 10
interface GigabitEthernet2.20
encapsulation isl 20
no ip redirects
no ip directed-broadcast
bridge-group 20
interface GigabitEthernet2.30
encapsulation isl 30
no ip redirects
no ip directed-broadcast
bridge-group 30
interface GigabitEthernet2.40
encapsulation isl 40
no ip redirects
no ip directed-broadcast
bridge-group 40
interface GigabitEthernet2.50
encapsulation isl 50
no ip redirects
no ip directed-broadcast
bridge-group 50
interface GigabitEthernet3
no ip address
no ip directed-broadcast
interface GigabitEthernet3.1
encapsulation isl 1
no ip redirects
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet3.150
encapsulation isl 150
no ip redirects
no ip directed-broadcast
bridge-group 150
interface GigabitEthernet4
no ip address
no ip directed-broadcast
interface GigabitEthernet4.1
encapsulation isl 1
no ip redirects
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet4.110
encapsulation isl 110
no ip redirects
no ip directed-broadcast
bridge-group 110
interface GigabitEthernet4.120

encapsulation isl 120
no ip redirects
no ip directed-broadcast
bridge-group 120
interface GigabitEthernet4.130
encapsulation isl 130
no ip redirects
no ip directed-broadcast
bridge-group 130
interface GigabitEthernet4.140
encapsulation isl 140
no ip redirects
no ip directed-broadcast
bridge-group 140
端口G5 G6 G7用于服務(wù)器的連接
interface GigabitEthernet5
no ip address
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet6
no ip address
no ip directed-broadcast
bridge-group 1
interface GigabitEthernet7
no ip address
no ip directed-broadcast
bridge-group 1
端口G8預(yù)留
interface GigabitEthernet8
no ip address
no ip directed-broadcast
shutdown
上述的br-group有點(diǎn)象 VLAN的劃分過(guò)程
以下是對(duì)每個(gè)br-group 加上網(wǎng)關(guān)（可以這樣理解）
interface BVI1
ip address 10.1.0.1 255.255.0.0

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