D-H,appy

L2 (frame) MAC
show mac-address-table
learning
broadcast
300

L3 (packet) IP
show ip route
protocol dynamic (OSPF, EIGRP)
drop
유지

-------------------------------

VLAN = Broadcast domain = 1 network = router interface
==> ip address network 부분 동일하게 사용

59.5.100.205

itbank, itbank
sw15
clear line 15

초기화(flash(IOS) ==> nvram(startup-config) ==> 초기화 )
#erase startup (nvram startup configuration 삭제)
#delete vlan.dat
#reload

switch 초기화
#erase startup-config(nvram삭제)
#delete vlan.dat (vlan정보 삭제)
#reload

running-configuration RAM
startup-configuration NVRAM

copy running startup = wr

show interface status
show version
show flash (IOS)
show logging
show run interface f0/23

show vlan
show interface trunk
show vtp status

vlan생성
config)#vlan 10
config-vlan)#name 10F
config-vlan)#end
#show vlan

vlan삭제
config)#no vlan 10
config)#default interface fa0/1

----------------------------
sw15(config)#vlan 10
sw15(config-vlan)#name 10F
sw15(config-vlan)#exit
sw15(config)#vlan 20
sw15(config-vlan)#name 20F
sw15(config-vlan)#exit

sw15(config)#interface fa0/1
sw15(config-if)#switchport mode access
sw15(config-if)#switchport access vlan 10
sw15(config-if)#exit

sw15(config)#interface fa0/2
sw15(config-if)#switchport mode access
sw15(config-if)#switchport access vlan 10
sw15(config-if)#exit

sw15(config)#interface range fa0/3-4
sw15(config-if-range)#switchport mode access
sw15(config-if-range)#switchport access vlan 20
sw15(config-if-range)#exit

sw15#show vlan
sw15#show interface status
sw15#show run interface fa0/1

이렇게 해도 됨
sw15(config)#interface fa0/10
sw15(config-if)#switchport access vlan 100
sw15#show vlan

vlan생성
sw15#vlan database
% Warning: It is recommended to configure VLAN from config mode,
as VLAN database mode is being deprecated. Please consult user
documentation for configuring VTP/VLAN in config mode.

sw15(vlan)#vlan 120 name 120F
VLAN 120 added:
Name: 120F
sw15(vlan)#exit
APPLY completed.
Exiting....
sw15#

IOS ==> config t
CatOS ==> set

------------------------------

====Trunk====
1. 802.1Q (IEEE) ==> tagging (vlan정보를 중간에 붙임)
2. ISL (CISCO) ==> encapsulation (정보를 앞에 붙임)

interface fa0/1
switchport trunk encapsulation [isl, dot1q]
switchport mode trunk

확인
show interface trunk

--------------------------

sw15(config)#interface fa0/23
sw15(config-if)#switchport trunk encapsulation dot1q
sw15(config-if)#switchport mode trunk
sw15(config-if)#switchport nonegotiate (DTP off)
sw15(config-if)#switchport trunk allowed vlan 1,2
sw15(config-if)#switchport trunk native 1
sw15#show interface trunk

Port Mode Encapsulation Status Native vlan
Fa0/23 on 802.1q trunking 1

Port Vlans allowed on trunk
Fa0/23 1-4094

Port Vlans allowed and active in management domain
Fa0/23 1,10,20,100,120

Port Vlans in spanning tree forwarding state and not pruned
Fa0/23 none
sw15#

------------------------

sw15(config)#interface fa0/23
sw15(config-if)#switchport trunk encapsulation isl
sw15(config-if)#switchport mode trunk

확인
sw15#show interface trunk
sw15#show interface status

(DTP) dynamic trunk protocol
sw15(config)#interface fa0/23
sw15(config-if)#switchport trunk encapsulation isl
sw15(config-if)#switchport mode trunk
sw15(config-if)#switchport nonegotiate (DTP off)

-----------------------

switchport mode access 특정한 하나의 VLAN만 돌아다닐수있음
switchport mode trunk 제한없음
switchport mode dynamic (DTP)
switchport mode dynamic desirable (DTP)
switchport mode dynamic auto ==> default

desirable = auto ==> trunk
desirable = desirable ==> trunk
desirable = trunk ==> trunk
desirable = access ==> access

auto = auto ==> access

======================================
IOS

config)#vlan 10
#show vlan

switchport trunk encap dot1q isl
switchport mode trunk

----------------
CatOS

#vlan database
-vlan)#vlan 10
#show vlan-switch

switchport mode trunk

no shut

-------------------
실습 2번

turnk설정
sw~3까지 다.

sw1(config)#interface fa1/1
sw1(config-if)#switchport mode trunk
sw1(config-if)#no shut
sw1(config-if)#

sw1(config)#interface fa1/3
sw1(config-if)#switchport mode trunk
sw1(config-if)#no shut

ip설정
sw~3까지 다.

sw1(config)#interface vlan 1
sw1(config-if)#ip add 192.168.1.1 255.255.255.0
sw1(config-if)#no shut

VTP
1. trunk
2. vtp domain name

sw~3까지 다

sw1#vlan database
sw1(vlan)#vtp domain BCMSN
Changing VTP domain name from NULL to BCMSN

vlan 추가 및 확인

sw1#vlan database
sw1(vlan)#vlan 10
VLAN 10 added:
Name: VLAN0010
sw1(vlan)#vlan 20
VLAN 20 added:
Name: VLAN0020
sw1(vlan)#vlan 30
VLAN 30 added:
Name: VLAN0030
sw1(vlan)#vlan 40
VLAN 40 added:
Name: VLAN0040
sw1(vlan)#vlan 50
VLAN 50 added:
Name: VLAN0050
sw1(vlan)#vlan 60
VLAN 60 added:
Name: VLAN0060
sw1(vlan)#exit
APPLY completed.
Exiting....
sw1#