D-H,appy

STP (802.1D) PVST

1. RSTP
root port
designated port
alternative port (root port) - 원래 blocking 이지만 alternative로 만들어둠
backup port (designated port)

edge port (listen , learn) 생략

config)#spanning-tree mode rapid-pvst

2. MSTP

MST (name, revision, group)
D1
spanning-tree mode mst ==> (RSTP 자동 enable)
spanning-tree mst configuration
name BCMSN
revision 1
instance 1 vlan 1-500
instance 2 vlan 500-1000

show spanning-tree mst 1
show spanning-tree mst 2

spannign-tree mst 1 root primary
spanning-tree mst 2 root secondary

STP 1000 ===> STP 2개

show spanning-tree mst configuration

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

IOS & Catos 차이

IOS

config)#vlan 10
config-vlan)#name 10f
show vlan

interface fa0/1
switchport trunk encapsulation dot1q -- 802.1Q, isl 둘다 지원
switchport trunk encapsulation isl
switchport mode trunk

vtp domain BCMSN
vtp mode server

show spanning-tree vlan 1

Catos

#vlan database
-vlan)#vlan 10 name 10F

show vlan-switch

interface fa0/1 -- 802.1Q만 지원
switchport mode trunk
no shut

vlan database
vtp domain BCMSN
vtp server

show spanning-tree vlan 1 brief

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

실습 LAB _ 05

sw13(config)#interface fa0/23
sw13(config-if)#switchport trunk encapsulation isl
sw13(config-if)#switchport mode trunk
sw13(config-if)#no shut
sw13(config-if)#exit
sw13(config)#interface fa0/24
sw13(config-if)#switchport trunk encapsulation isl
sw13(config-if)#switchport mode trunk
sw13(config-if)#no shut

sw13#show interface trunk

sw13(config)#vtp domain BCMSN
Domain name already set to BCMSN.
sw13(config)#vtp mode server
Device mode already VTP SERVER.

sw13(config)#vlan 10
sw13(config-vlan)#name VLAN_10
sw13(config-vlan)#exit
sw13(config)#vlan 20
sw13(config-vlan)#name VLAN_20
sw13(config-vlan)#exit
sw13(config)#vlan 30
sw13(config-vlan)#name VLAN_30
sw13(config-vlan)#exit
sw13(config)#vlan 40
sw13(config-vlan)#name VLAN_40
sw13(config-vlan)#exit
sw13(config)#vlan 50
sw13(config-vlan)#name VLAN_50
sw13(config-vlan)#exit
sw13(config)#vlan 60
sw13(config-vlan)#name VLAN_60
sw13(config-vlan)#exit

sw13(config)#spanning-tree mode rapid-pvst

sw13(config)#spanning-tree mode mst
sw13(config)#spanning-tree mst configuration
sw13(config-mst)#name BCMSN
sw13(config-mst)#revision 1
sw13(config-mst)#instance 1 vlan 10, 20, 30
sw13(config-mst)#instance 2 vlan 40, 50, 60
sw13(config-mst)#exit
sw13(config)#spanning-tree mst 1 root primary
sw13(config)#exit

sw13#show spanning-tree mst 1
sw13#show spanning-tree mst configuration

sw13(config)#interface fa0/24
sw13(config-if)#spanning-tree mst 2 cost 20000 (default 200000)
(mst 2 FA0/24 Blocking -> FA0/23 Blocking)

================
교재
EhterChannel

trunk
802.1Q (IEEE)
ISL (CISCO)

etherchannel
LACP (IEEE) 802.3ad
PAGP (CISCO)

interface range fa0/23-24
channel-protocol lacp
channel-group 1 mode (active, passive)

interface range fa0/23-24
channel-protocol pagp
channel-group 1 mode (desirable, auto)

interface range fa0/23-24
channel-group 1 mode on

sw13(config)#interface range fa0/23-24
sw13(config-if-range)#channel-protocol lacp
sw13(config-if-range)#channel-group 1 mode active
Creating a port-channel interface Port-channel 1

sw13#show spanning-tree mst 2
Po1 Root FWD 100000 128.56 P2p

cost도 100000으로 줄어들었음

확인
show etherchannel 1 summary
interface port-channel 1

삭제
default interface range fa0/23-24
(configuration 삭제)
no interface port-channel 1
(논리적 인터페이스 삭제)

-------------
Multilayer Switch(L3, L2)
switchport mode access
switchport mode trunk
routed port (no switchport) => switchport

sw13(config)#interface fa0/23
sw13(config-if)#no switchport (*)
sw13(config-if)#ip address 10.1.12.1 255.255.255.0
sw13(config-if)#exit

ip routing (*)
router eigrp 109

확인
show interface status

실습 LAB 6-2

sw13(config)#interface lo 0
sw13(config-if)#ip address 1.1.1.1 255.255.255.0
sw13(config-if)#exit

sw13(config)#interface fa0/23
sw13(config-if)#no switchport
sw13(config-if)#ip address 10.1.12.1 255.255.255.0
sw13(config-if)#exit

sw13(config)#ip routing
sw13(config)#router eigrp 109
sw13(config-router)#network 1.1.1.0 0.0.0.255
sw13(config-router)#network 10.1.12.0 0.0.0.255
sw13(config-router)#exit

확인
show ip route
ping 2.2.2.2

실습 LAB 6-3

L2 etherchannel
Interface range fa0/23-24
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk

L3 etherchannel
Interface range fa0/23-24
no swithport
channel-group 1 mode active
Interface port-channel 1
ip add 10.1.12.1 255.255.255.0

ip routing
router eigrp 109
network 10.1.12.0 0.0.0.255

STP (listen) 802.1D PVST

1. Root bridge 선출 (VLAN 마다)
(Priority(32768) ==> MAC)

2. Root port 선출 (Non root bridge 마다)
(cost ==> port id(sender))
(cost : 100M ==> 19 10M ==> 100)

3. Designated port 선출 (segment 마다)
(cost ==> priority ==> MAC)

Root port (BPDU 수신)
Designated port (BPDU 송신)
Blocking port (BPDU 수신) traffic 차단

=============================================

(listen) MAC 학습 (broadast 감소)

1. Root bridge (priority, mac)
spanning-tree vlan 3 priority 32767
or
spanning-tree vlan 3 root primary
spanning-tree vlan 3 root secondary

2. Root port (cost, port-priority)
==cost==
-if)#spanning-tree vlan 10 cost 19

==port-priority==(sender)
-if)#spanning-tree vlan 10 port priority 128

3. Designated (cost, priority)

=============================================

실습 3

sw1(config)#interface fa1/1
sw1(config-if)#switchport mode trunk
sw1(config-if)#no shut
sw1(config-if)#exit
sw1(config)#interface fa1/2
sw1(config-if)#switchport mode trunk
sw1(config-if)#no shut
sw1(config-if)#exit
sw1#vlan database
sw1(vlan)#vtp domain BCMSN
Changing VTP domain name from NULL to BCMSN
sw1(vlan)#exit

sw2(config)#interface fa1/1
sw2(config-if)#swit
sw2(config-if)#switchport mode trunk
sw2(config-if)#no shut
sw2(config-if)#exit
sw2(config)#interface fa1/2
sw2(config-if)#switch
sw2(config-if)#switchport mode trunk
sw2(config-if)#no shut
sw2(config-if)#exit
sw2#vlan database
sw2(vlan)#vtp domain BCMSN
Changing VTP domain name from NULL to BCMSN
sw2(vlan)#

SW1에서 VLAN 생성
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

확인
show interface trunk
show vtp status
show vlan-switch

show spanning-tree vlan X brief
show spanning-tree root brief

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

vlan 10,30,50 ==> SW1 ROOT Bridge
vlan 20,40,60 ==> SW2 ROOT Bridge
로 만들라

sw2(config)#spanning-tree vlan 20 priority 32767
sw2(config)#spanning-tree vlan 40 priority 32767
sw2(config)#spanning-tree vlan 60 priority 32767
sw2(config)#

sw1(config)#spanning-tree vlan 10 priority 32767
sw1(config)#spanning-tree vlan 30 priority 32767
sw1(config)#spanning-tree vlan 50 priority 32767

확인
show spanning-tree vlan X brief
show spanning-tree root brief

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

3번문제
Root 포트 변경
1. COST ==> -if)#spanning-tree vlan 10 cost 19
2. Port priority ==> -if)#spanning-tree vlan 10 port-priority 128 (sender)

3-1

sw1
show spanning-tree vlan 20 brief (F1/2 Blocking) ==> (F1/1 Blocknig)
--> cost를 변경

sw1(config)#interface fa1/1
sw1(config-if)#spanning-tree vlan 20 cost 20 (기본19에서 20으로 변경)

아래의 방법도 똑같은 결과
sw2(config)#interface fa1/1
sw2(config-if)#spanning-tree vlan 20 port-priority 132 (기본 128에서 132로 변경)

확인
sw1#show spanning-tree vlan 20 brief
FastEthernet1/1 128.42 128 20 BLK 0 32767 c801.0128.0002 128.42
FastEthernet1/2 128.43 128 19 FWD 0 32767 c801.0128.0002 128.43

3-2

sw2(config)#interface fa1/1
sw2(config-if)#spanning-tree vlan 60 port-priority 132

3-3

sw2(config)#interface fa1/1
sw2(config-if)#spanning-tree vlan 10 cost 20
확인
FastEthernet1/1 128.42 128 20 BLK 0 32767 c800.0128.0001 128.42
FastEthernet1/2 128.43 128 19 LRN 0 32767 c800.0128.0001 128.43

3-4

sw1(config)#interface fa1/1
sw1(config-if)#spanning-tree vlan 50 port-priority 132
확인
FastEthernet1/1 128.42 128 19 BLK 0 32767 c800.0128.0005 132.42
FastEthernet1/2 128.43 128 19 LRN 0 32767 c800.0128.0005 128.43

====================================================

실습 4

4-1,2

SW3 SW4 f1/1 trunk
SW3 f1/3 vlan 10
SW4 f1/5 vlan 10
SW1 f1/3 f1/5 vlan 10

sw3(config)#interface fa1/1
sw3(config-if)#switchport mode trunk
sw3(config-if)#no shut

sw4(config)#interface fa1/1
sw4(config-if)#switchport mode trunk
sw4(config-if)#no shut

sw3(config)#interface fa1/3
sw3(config-if)#switchport access vlan 10
sw3(config-if)#no shut
sw3#vlan database
sw3(vlan)#vlan 10
VLAN 10 added:
Name: VLAN0010

sw4(config)#interface fa1/5
sw4(config-if)#switchport access vlan 10
sw4(config-if)#no shut
sw4#vlan database
sw4(vlan)#vlan 10
VLAN 10 added:
Name: VLAN0010

sw1(config)#interface fa1/3
sw1(config-if)#switchport access vlan 10
sw1(config-if)#no shut
sw1(config-if)#exit
sw1(config)#interface fa1/5
sw1(config-if)#switchport access vlan 10
sw1(config-if)#no shut
sw1#vlan data
sw1#vlan database
sw1(vlan)#vlan 10
VLAN 10 added:
Name: VLAN0010

SW4의 fa1/1포트가 block되어있다.

FastEthernet1/1 128.42 128 19 BLK 19 32768 c802.0ab0.0001 128.42

sw3(config)#spanning-tree vlan 10 priority 32766 -> sw4쪽에 block

sw4(config)#spanning-tree vlan 10 priority 32767

하면 완료

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

4-3,4

sw2(config)#interface fa1/3
sw2(config-if)#switchport access vlan 20
sw2(config-if)#no shut
sw2(config-if)#exit
sw2(config)#interface fa1/5
sw2(config-if)#switchport access vlan 20
sw2(config-if)#no shut

sw3(config)#interface fa1/5
sw3(config-if)#switchport access vlan 20
sw3(config-if)#no shut

sw4(config)#interface fa1/3
sw4(config-if)#switchport access vlan 20
sw4(config-if)#no shut

sw4 의 fa1/1포트가 block되어 있다.

sw4(config)#spanning-tree vlan 20 root primary
sw3(config)#spanning-tree vlan 20 root secondary

하면 sw2의 fa1/5가 block된다.

=====================================
교재

BCMSN30S03L01.ppt ----- (STP) 9페이지

priority + mac add = bridge ID

(listen, learn 생략)
interface fa0/1
no shut
spanning-tree portfast

===================================
STP(802.1D) PVST

IEEE
1. RSTP(802.1W)
2. MST (802.1S)

CISCO
1. portfast, uplinkfast, backbonfast == RSTP