Catalyst 3524 switch IP 地址的配置
直接進入默認的VLAN 1中進行配置命令如下：
interface VLAN1
ip address 172.16.1.3 255.255.0.0
即可。
在Catalyst 中控制對Telnet的訪問
bluestudy_a(config)#access-list 2 permit 172.16.0.0 0.0.255.255 （定義標準的訪問列表）
bluestudy_a(config)#line vty 0 15（進入telnet端口，最多允許16個telnet的會話）
bluestudy_a(config-line)#access-class 2 in（應用上述定義的訪問列表，即只有172.16.0.0/16的網段可以實現對交換機的telnet會話
設置交換機的enable 密碼
bluestudy_a(config)#enable password bluestudy
bluestudy_a(config)#enable secret bluestudy
The enable secret you have chosen is the same as your enable password.
This is not recommended. Re-enter the enable secret.
注：對于如上的密碼，secret的優先級更高，優先起作用。
設置console口密碼
bluestudy_a(config)#line con 0
bluestudy_a(config-line)#password bluestudy
bluestudy_a(config-line)#
設置對telnet的密碼：
bluestudy_a(config)#line vty 0 15
bluestudy_a(config-line)#login
bluestudy_a(config-line)#password bluestudy
bluestudy_a(config-line)#
設置登陸用戶名和密碼：
bluestudy_a(config)#username bluestudy password bluestudy
bluestudy_a(config)#
bluestudy_a#show running
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname bluestudy_a
!
enable secret 5 $1$b1mb$p6XgV/PY9WqvJy9MrHZFG/
enable password bluestudy
!
username bluestudy password 0 bluestudy
!
ip subnet-zero
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface VLAN1
ip address 172.16.1.3 255.255.0.0
no ip directed-broadcast
no ip route-cache
!
access-list 2 permit 172.16.0.0 0.0.255.255
!
line con 0
password bluestudy
transport input none
stopbits 1
line vty 0 4
access-class 2 in
password bluestudy
login
line vty 5 15
access-class 2 in
password bluestudy
login
!
end
bluestudy_a#