router setting
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기본설정
Router (config)# no ip domain-lookup // 도메인을 찾지 말아라 (명령어를 잘못 쳤을때 도메인으로 인식하지 말
아라)
Router(config)#line console 0
Router(config-line)#exec-timeout 0 0 // 타임아웃 되어서 접속종료하지 말아라
Router(config-line)#logging synchronous
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172.16.1. 000 0 0000
N = 3bit
000 0 0000 0
000 1 1111 31
---------------------------------------
001 0 0000 32
001 1 1111 63
010 0 0000 64
010 1 1111 95
011 0 0000 96
011 1 1111 127
100 0 0000 128
100 1 1111 159
101 0 0000 160
101 1 1111 191
110 0 0000 192
110 1 1111 223
---------------------------------------
111 0 0000 223
111 1 1111 255
----------------------------------------
Router> show version
Router> enable
Router#show running-config
Router#?
xec commands:
<1-99> Session number to resume
auto Exec level Automation
clear Reset functions
clock Manage the system clock
configure Enter configuration mode
connect Open a terminal connection
copy Copy from one file to another
debug Debugging functions (see also 'undebug')
delete Delete a file
dir List files on a filesystem
disable Turn off privileged commands
disconnect Disconnect an existing network connection
enable Turn on privileged commands
erase Erase a filesystem
exit Exit from the EXEC
logout Exit from the EXEC
mkdir Create new directory
more Display the contents of a file
no Disable debugging informations
ping Send echo messages
reload Halt and perform a cold restart
resume Resume an active network connection
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Router (config)# no ip domain-lookup // 도메인을 찾지 말아라
Router(config)#line console 0
Router(config-line)#exec-timeout 0 0 // 타임아웃 되어서 접속종료하지 말아라
Router(config-line)#logging synchronous
(config)#hostname R1 // router 이름 바꾸기
R1(config)#
R1#show history
show interfaces Ethernet F 0/0
show interfaces Ethernet 0/0/0
show interfaces Ethernet 0/
show interfaces Ethernet 0/0
configure
show interfaces FastEthernet 0/0
configure
configure terminal
history
show history
R1#terminal history size 3 // 히스토리 사이즈 3개만 출력
R1#copy running-config startup-config // 설정 내용 저장 하기 기본적인 장비는 ram 에 저장이 되기 때문에
리붓 하게 되면 설정 내용이 날라 간다.
Destination filename [startup-config]?
Building configuration...
[OK]
R1#reload
R1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#inter
R1(config)#interface fa
R1(config)#interface fastEthernet 0/0
R1(config)#interface fastEthernet 0/0 // 라우터의 FastEternet 0/0 설정
R1(config-if)#no shutdown // fastethernet 활성화
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config-if)#ip address 172.16.1.33 255.255.255.224 // 아이피 설정
R1(config-if)#int s0/0
R1(config-if)#clock rate 64000 // dce 에서 넣지만 그냥 넣어 준다.
R1(config-if)#
설정 내용 보기
R1(config-if)#end
R1#show running-config // 라우터 설정 확인
interface FastEthernet0/0
ip address 172.16.1.33 255.255.255.224
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0
ip address 172.16.1.129 255.255.255.224
!
interface Serial0/1
R1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#inter
R1(config)#interface fa
R1(config)#interface fastEthernet 0/0
R1(config-if)#duplex
R1(config-if)#duplex ?
auto Enable AUTO duplex configuration
full Force full duplex operation
half Force half-duplex operation
R1(config-if)#duplex full
R1(config-if)#speed ?
10 Force 10 Mbps operation
100 Force 100 Mbps operation
auto Enable AUTO speed configuration
R1#show ip interface brief // 인터페이스에 대한 각각의 아이피 설정 정보를 볼수 있다.
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.16.1.33 YES manual up up
FastEthernet0/1 unassigned YES NVRAM administratively down down
Serial0/0 172.16.1.129 YES manual down down
Serial0/1 unassigned YES NVRAM administratively down down
Serial0/2 unassigned YES NVRAM administratively down down
Serial0/3 unassigned YES NVRAM administratively down down
FastEthernet1/0 unassigned YES NVRAM administratively down down
FastEthernet1/1 unassigned YES NVRAM administratively down down
administratively down // 쓸수 없는 상태
Serial0/0 172.16.1.129 YES manual down down // 통신을 할수 없는 상태
R2 router 에서 fastEthenet
central(config-if)#description R1_connect
central(config)#interface fa
central(config)#interface fastEthernet 0/0
central(config-if)#no shutdown
central(config-if)#ip address 172.16.1.65 255.255.255.224
central(config)#int s0/0
central(config-if)#ip address 172.16.1.161 255.255.255.224
central(config-if)#clock rate 64000
Router passwd 설정
R1#configure t
R1(config)#enable password cisco
Router>en 명령시 password 물어봄
R1#configure t
R1(config)#enable secret aaa
enable password 와 enable secret 가 되어 있다고 하면
enable secret 우선 순위가 높다
R1#show running-config
enable secret 5 $1$mERr$0qc4f9z9UYCi6V2sVqpTi.
enable password cisco
secret 는 암호화 되어 저장된다.
password 는 암호화 안되어서 저장이 된다.
R1#conf t
R1(config-line)#password bbb
Router 접속시 무조건 암호를 물어 본다.
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Router telnet 구성
R1#configure t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#line vty 0 4 // 5명의 접속자
R1(config-line)#password abcd
R1(config)#ip route 172.16.1.64 255.255.255.224 s 0/0 // 172.16.1.64 net ID
Router R1 Setting
R1#configure t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#ip rou
R1(config)#ip route 172.16.1.96 255.255.255.224 s // 172.16.1.96 netID
R1(config)#ip route 172.16.1.96 255.255.255.224 serial 0/0
R1(config)#ip route 172.16.1.64 255.255.255.224 serial 0/0
다른 대역의 NETID 를 집어 넣으면 된다. 다른 장비와 연결된 시리얼 넘버를 지정해 주면 된다.
Router R2 Setting
R2>en
R2#confi
R2#configure t
R2#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#
R2(config)#ip route 172.16.1.32 255.255.255.224 serial 0/1
R2(config)#ip route 172.16.1.96 255.255.255.224 serial 0/0
Router R3 Setting
R3>en
R3#confi
R3#configure t
R3#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#
R3(config)#ip route 172.16.1.64 255.255.255.224 serial 0/1
R3(config)#ip route 172.16.1.32 255.255.255.224 serial 0/1
