说明:
这是一个比较综合的实例，从拓扑图上可以看出，它所包含的设备和技术。以下对这个例子作些说明希望能够和各位网友交流。
1.对于内部局域网，选用Cisco的Catalyst 6506作为中心交换机，二级交换采用Catalyst 3500，同时为了说明Trunk，又加了一个Catalyst 2900 作为三级交换，对于终端连接用了Catalyst 1900交换机，这样就可以在Catalyst 6506与Catalyst 3500之间以及Catalyst 3500与Catalyst 2900 之间建立Trunk，实现跨交换机的VLAN。
注：Catalyst 2900系列假如要实现Trunk，软件必须是企业版的，关于类似疑问可以至疑难杂谈栏目。
2.对于外连上,主要是专线连接和拨号访问,当然种类比较多.包括了DDN、 ISDN、 Frame Relay、 E1 线路等。
3.本例给出设备的基本配置。
4.对于多设备的连接问题,值得注重的是路由问题,本实例外连部分采用静态路由而内部局域网采用动态路由.
5.在本例的帧中继配置中,运用了ip Unnumbered ,可以节省地址资源,有爱好可以注重一下
配置实例
VLAN划分问题:
对于交换设备本例中划到VLAN 1中,而对于外连设备的所有以太网端口,均划到VLAN 2中,下面给出各VLAN的名称和网关地址,本例划分8个VLAN.
VLAN ID VLAN Name Gateway
VLAN 1 Bluestudy 1 10.1.0.1/16
VLAN 2 Bluestudy 2 10.2.0.1/16
VLAN 3 Bluestudy 3 10.3.0.1/16
VLAN 4 Bluestudy 4 10.4.0.1/16
VLAN 5 Bluestudy 5 10.5.0.1/16
VLAN 6 Bluestudy 6 10.6.0.1/16
VLAN 7 Bluestudy 7 10.7.0.1/16
VLAN 8 Bluestudy 8 10.8.0.1/16
Catalyst 6506 的配置
Enter passWord:
enable
Enter password:
config t
set system name Bluestudy
set time 10/30/2000 9:30:00
set password
set enablepass
set interface sc0 10.1.0.2/16
set ip route default 10.1.0.1
set ip dns server 10.1.0.100
set ip dns domain bluestudy.com
set ip dns enable
set vtp domain bluestudy mode server
set vlan 1 name Bluestudy 1
set vlan 2 name Bluestudy 2
set vlan 3 name Bluestudy 3
set vlan 4 name Bluestudy 4
set vlan 5 name Bluestudy 5
set vlan 6 name Bluestudy 6
set vlan 7 name Bluestudy 7
set vlan 8 name Bluestudy 8
set port negotiation 2/1-8 enable
set port name 2/1-8 GEC 802.1Q Trunk
set trunk 2/1-8 desirable dot1q
set port speed 2/1-8 1000
set vlan 1 3/1-48
对于6506的交换机方面的配置只需做出Trunk即可,因为要实现跨交换机之间的虚网,下面配置6506的
路由模块,因为6506的路由模块现在与治理引擎模块集成在了一起,所以,默认命令是:session 15
详情请见 6506 路由设置.
Catalyst 6506RSM模块的配置
(enable) session 15
Trying Router-15...
Connected to Router-15.
Escape character is '^]'.
enable
configure terminal
hostname bluestudy
enable password password
line vty 0 6
password secret_word
ip domain-name bluestudy.com
ip name-server 10.1.0.100
interface vlan 1
ip address 10.1.0.1 255.255.0.0
no shutdown
interface vlan 2
ip address 10.2.0.1 255.255.0.0
no shutdown
interface vlan 3
ip address 10.3.0.1 255.255.0.0
no shutdown
interface vlan 4
ip address 10.4.0.1 255.255.0.0
no shutdown
interface vlan 5
ip address 10.5.0.1 255.255.0.0
no shutdown
interface vlan 6
ip address 10.6.0.1 255.255.0.0
no shutdown
interface vlan 7
ip address 10.7.0.1 255.255.0.0
no shutdown
interface vlan 8
ip address 10.8.0.1 255.255.0.0
no shutdown
router rip
version 2
network 10.0.0.0
ip route 0.0.0.0 0.0.0.0 10.2.0.12
ip route 192.168.2.0 255.255.255.0 10.2.0.13
ip route 192.168.3.0 255.255.255.240 10.2.0.11
ip route 192.168.4.0 255.255.255.0 10.2.0.11
ip route 192.168.5.0 255.255.255.0 10.2.0.11
ip route 192.168.6.0 255.255.255.0 10.2.0.11
copy running-config startup-config
Building configuration...
[OK]
这里给出的是单纯的命令行,略去了一些默认状况的设置.
Catalyst 3500 的配置
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname bluestudy
!
enable password password
!
username bluestudy password password
username test password password
!
省略端口的显示
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet0/2
!
interface VLAN1
ip address 10.1.0.4 255.255.0.0
ip helper-address 10.1.0.100
ip directed-broadcast
no ip route-cache
!
ip default-gateway 10.1.0.1
interface Ethernet1/1(与2900对接)
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Ethernet1/2(与1900 A对接)
switchport access VLAN 3
no shut
!
interface Ethernet1/3(与1900 B对接)
switchport access VLAN 4
no shut
!
snmp-server engineID local 000000090200000216BE4E80
snmp-server community public RO
snmp-server community PRivate RW
snmp-server chassis-id 0x17
(打开简单的网络治理，便于以后，Cisco 网管软件识别和治理）
!
line con 0
login local
transport input none
stopbits 1
line vty 0 4
login local
line vty 5 15
login
!
end
Catalyst 2900 的配置
2900的配置与3500的相似,命令如下
hostname bluestudy
!
enable password password
!
username bluestudy password password
username test password password
!
省略端口的显示
!
interface Ethernet0/1(与3500对接)
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface VLAN1
ip address 10.1.0.3 255.255.0.0
ip helper-address 10.1.0.100
ip directed-broadcast
no ip route-cache
!
ip default-gateway 10.1.0.1
!
interface Ethernet0/2(与1900 C对接)
switchport access VLAN 5
no shut
!
interface Ethernet0/3(与1900 D对接)
switchport access VLAN 6
no shut
!
snmp-server engineID local 000000090200000216BE4E80
snmp-server community public RO
snmp-server community private RW
snmp-server chassis-id 0x17
!
line con 0
login local
transport input none
stopbits 1
line vty 0 4
login local
line vty 5 15
login
!
end
Cisco Catalyst 1900 的配置
对于1900的配置就相对轻易得多了
只需在enable 状态下键入 Setup 就会进入配置向导
给出交换机的
IP地址:10.3.0.5
掩码:255.255.0.0
网关:10.3.0.1
就可以了,另外应该打开简单的网络治理协议SNMP
snmp-server community public RO
snmp-server community private RW
即可
PIX 520A的基本配置
PIX Version 4.2(4)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password password encrypted
passwd password encrypted
hostname pix_A
fixup protocol FTP 21
fixup protocol http 80
fixup protocol smtp 25
fixup protocol h323 1720
fixup protocol rsh 514
fixup protocol sqlnet 1521
names
no failover
f
