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CCNP Switching Lab về dot1q Tunneling pdf

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interface FastEthernet0/1 switchport access vlan 10 switchport trunk encapsulation dot1q switchport mode dot1q-tunnel no ip address l2protocol-tunnel cdp no cdp enable spanning-tree bpd

Trang 1

Mô hình

IEEE dot1q tunneling là một cơ chế cho phép mang nhiều VLAN của khách hàng trong một tunnel Trong hình trên, khách hàng X có hai mạng bị phân chia bởi một service provider Switch 1 của khách hàng X sẽ có một kết nối trunking đến mạng của service providers Mạng của SP sẽ tạo ra một tunnel để mang tất cả các thông tin VLAN sang đầu kia của tunnel Các VLAN ở hai switch của khách hàng X sẽ có thể thấy nhau như thể được trunking trực tiếp

Từ trái sang phải:

Switch I của khách hàng X: dùng catalyst 2950

Switch I của nhà cung cấp dịch vụ: dùng Catalyst 3550

Switch II của nhà cung cấp dịch vụ: dùng Catalyst 3550

Switch II của khách hàng X: dùng Catalyst 2912

I Switch I của khách hàng X:

SHOW RUN

Building configuration

Current configuration:

!

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Switch

Trang 2

ip subnet-zero

!

interface FastEthernet0/1

switchport trunk encapsulation dot1q switchport mode trunk

!

interface FastEthernet0/3

switchport access vlan 7

!

interface FastEthernet0/4

switchport access vlan 10

!

interface FastEthernet0/5

switchport access vlan 10

!

interface FastEthernet0/6

switchport access vlan 10

!

interface FastEthernet0/7

switchport access vlan 10

!

interface FastEthernet0/8

switchport access vlan 10

!

interface FastEthernet0/9

switchport access vlan 10

!

interface FastEthernet0/10

switchport access vlan 10

!

interface FastEthernet0/11

switchport access vlan 10

!

interface FastEthernet0/12

switchport access vlan 10

!

interface VLAN1

ip address 10.1.2.1 255.255.255.0

no ip directed-broadcast

no ip route-cache

!

line con 0

transport input none

stopbits 1

line vty 0 4

Trang 3

line vty 5 15

login

!

end

Trên switch 1, các VLAN sau đây được chia Dùng lệnh show vlan để kiểm tra:

Switch#show vlan

VLAN Name Status Ports

- -

-1 default active Fa0/2

7 VLAN0007 active Fa0/3

10 VLAN0010 active Fa0/4, Fa0/5, Fa0/6, Fa0/7,

Fa0/8, Fa0/9, Fa0/10, Fa0/11,

Fa0/12

1002 fddi-default active

1003 token-ring-default active

1004 fddinet-default active

1005 trnet-default active

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 - -

-1 enet -10000 -1 -1500 - - - -1002 -1003

7 enet 100007 1500 - - - 0 0

10 enet 100010 1500 - - - 0 0

1002 fddi 101002 1500 - - - 1 1003

1003 tr 101003 1500 1005 0 - - srb 1 1002

1004 fdnet 101004 1500 - - 1 ibm - 0 0

1005 trnet 101005 1500 - - 1 ibm - 0 0

Kiểm tra trạng thái của port f0/1 của switch:

Switch#show int f0/1 switchport

Name: Fa0/1

Switchport: Enabled

Administrative mode: trunk

Operational Mode: trunk

Administrative Trunking Encapsulation: dot1q

Operational Trunking Encapsulation: dot1q

Negotiation of Trunking: Disabled

Access Mode VLAN: 0 ((Inactive))

Trunking Native Mode VLAN: 1 (default)

Trang 4

Trunking VLANs Enabled: ALL

Trunking VLANs Active: 1,7,10

Pruning VLANs Enabled: 2-1001

Priority for untagged frames: 0

Override vlan tag priority: FALSE

Voice VLAN: none

Appliance trust: none

Port f0/1 của switch được cấu hình như trunking mode bình thường Switch I của khách hàng X ‘không biết’ là đang được trunk với một switch của service provider

Switch#

Sau khi hoàn tất cấu hình, dùng lệnh show cdp neighbor Điểm độc đáo là switch của khách hàng X chỉ thấy switch của khách hàng X bên kia CDP không phát hiện được Catalyst switch của providers

Switch#show cdp ne

Switch#show cdp neighbors

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge

S - Switch, H - Host, I - IGMP, r - Repeater

Device ID Local Intrfce Holdtme Capability Platform Port ID

Switch Fas 0/1 135 S I WS-C2950-2Fas 0/1

Switch#show cdp neighbors detail

-Device ID: Switch

Entry address(es):

IP address: 10.1.2.6

Platform: cisco WS-C2950-24, Capabilities: Switch IGMP

Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1

Holdtime : 130 sec

Version :

Cisco Internetwork Operating System Software

IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(14)EA1a, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2003 by cisco Systems, Inc

Compiled Tue 02-Sep-03 03:33 by antonino

advertisement version: 2

Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27,

value=00000000FFFFFFFF010221FF000000000000000F239D C640FF0000

VTP Management Domain: 'a'

Trang 5

Native VLAN: 1

Duplex: full

II Switch I của service provider:

Khảo sát qua Switch của service provider:

sh run

Building configuration

Current configuration : 2248 bytes

!

version 12.1

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Switch

!

!

vlan dot1q tag native

ip subnet-zero

!

!

spanning-tree extend system-id

system mtu 1546

!

interface FastEthernet0/1

switchport access vlan 10

switchport trunk encapsulation dot1q switchport mode dot1q-tunnel

no ip address

l2protocol-tunnel cdp

no cdp enable

spanning-tree bpdufilter enable!

interface FastEthernet0/4

switchport access vlan 3

no ip address

!

interface FastEthernet0/5

switchport access vlan 3

no ip address

!

interface FastEthernet0/7

switchport access vlan 5

Trang 6

no ip address

!

interface FastEthernet0/8 switchport access vlan 5

no ip address

!

interface FastEthernet0/9 switchport access vlan 5

no ip address

!

interface FastEthernet0/10 switchport access vlan 5

no ip address

!

interface FastEthernet0/11 switchport access vlan 5

no ip address

!

interface FastEthernet0/12 switchport access vlan 5

no ip address

!

interface FastEthernet0/13 switchport access vlan 5

no ip address

!

interface FastEthernet0/14 switchport access vlan 5

no ip address

!

interface FastEthernet0/15 switchport access vlan 5

no ip address

!

interface FastEthernet0/16 switchport access vlan 5

no ip address

!

interface FastEthernet0/17 switchport access vlan 5

no ip address

!

interface FastEthernet0/18 switchport access vlan 5

no ip address

!

Trang 7

interface FastEthernet0/19

switchport access vlan 5

no ip address

!

interface FastEthernet0/20

switchport access vlan 5

no ip address

!

interface FastEthernet0/21

switchport access vlan 5

no ip address

!

interface FastEthernet0/22

switchport access vlan 5

no ip address

!

interface FastEthernet0/23

switchport access vlan 5

no ip address

!

interface FastEthernet0/24

description trunk with switch II của provider

switchport access vlan 10

switchport trunk encapsulation dot1q

switchport mode trunk

no ip address

!

interface Vlan1

ip address 10.1.1.1 255.255.255.0

!

ip classless

ip http server

!

line con 0

line vty 5 15

!

end

Xem các vlan được cấu hình trên switch của service provider: Switch#sh vlan

VLAN Name Status Ports

- -

-1 default active Fa0/2, Fa0/3, Fa0/6, Gi0/ -1

Trang 8

2 cus active

3 sell active Fa0/4, Fa0/5

5 aaa active Fa0/7, Fa0/8, Fa0/9, Fa0/10

Fa0/11, Fa0/12, Fa0/13, Fa0/14

Fa0/15, Fa0/16, Fa0/17, Fa0/18

Fa0/19, Fa0/20, Fa0/21, Fa0/22

Fa0/23

7 VLAN0007 active

10 VLAN0010 active Fa0/1

1002 fddi-default active

1003 token-ring-default active

1004 fddinet-default active

1005 trnet-default active

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 - -

-1 enet -10000 -1 -1500 - - - 0 0

2 enet 100002 1500 - - - 0 0

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 - -

-3 enet 10000 -3 1500 - - - 0 0

5 enet 100005 1500 - - - 0 0

7 enet 100007 1500 - - - 0 0

10 enet 100010 1500 - - - 0 0

1002 fddi 101002 1500 - - - 0 0

1003 tr 101003 1500 - - - - srb 0 0

1004 fdnet 101004 1500 - - - ieee - 0 0

1005 trnet 101005 1500 - - - ibm - 0 0

Remote SPAN VLANs

-Primary Secondary Type Ports

- - -

-Xem các switch láng giềng bằng lệnh show cdp neighbor:

Switch#sh cdp nei

Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge

S - Switch, H - Host, I - IGMP, r - Repeater

Trang 9

Device ID Local Intrfce Holdtme Capability Platform Port ID

Switch Fas 0/24 120 S I WS-C3550-4Fas 0/24

Kết quả của lệnh trên cho thấy, chỉ có switch của service provider là thấy nhau Switch của khách hàng X (Cat 2950) không hiển thị trong output này

Switch#sh int f0/1 trunk

Port Mode Encapsulation Status Native vlan

Fa0/1 off 802.1q not-trunking 1

Port Vlans allowed on trunk

Fa0/1 10

Port Vlans allowed and active in management domain

Fa0/1 10

Port Vlans in spanning tree forwarding state and not pruned

Fa0/1 10

Switch#sh int f0/23 4 trunk

Port Mode Encapsulation Status Native vlan

Fa0/24 on 802.1q trunking 1

Port Vlans allowed on trunk

Fa0/24 1-4094

Port Vlans allowed and active in management domain

Fa0/24 1-3,5,7,10

Port Vlans in spanning tree forwarding state and not pruned

Fa0/24 1-3,5,7,10

Switch#shin int f0/1 trunk

Port Mode Encapsulation Status Native vlan

Fa0/1 off 802.1q not-trunking 1

Port Vlans allowed on trunk

Fa0/1 10

Port Vlans allowed and active in management domain

Fa0/1 10

Port Vlans in spanning tree forwarding state and not pruned

Trang 10

Fa0/1 10

Switch#

III Switch service provider II:

Khảo sát switch của sevice provider 2:

show run

Building configuration

Current configuration : 3937 bytes

!

version 12.1

no service pad

service timestamps debug uptime service timestamps log uptime

no service password-encryption

!

hostname Switch

!

!

ip subnet-zero

no ip domain-lookup

!

!

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan dot1q tag native

!

!

interface FastEthernet0/1

switchport access vlan 10

switchport mode dot1q-tunnel

no ip address

l2protocol-tunnel cdp

l2protocol-tunnel stp

l2protocol-tunnel vtp

no cdp enable

spanning-tree bpdufilter enable! interface FastEthernet0/2

switchport trunk encapsulation dot1q switchport trunk allowed vlan 1-3 switchport mode trunk

no ip address

Trang 11

interface FastEthernet0/5 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/6 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/7 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/8 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/9 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/10 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/11 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/12 switchport access vlan 2 switchport mode access

no ip address

!

interface FastEthernet0/13 switchport access vlan 3 switchport mode access

no ip address

!

Trang 12

interface FastEthernet0/14 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/15 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/16 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/17 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/18 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/19 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/20 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/21 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/22 switchport access vlan 3 switchport mode access

no ip address

!

interface FastEthernet0/23

Trang 13

switchport access vlan 3

switchport mode access

no ip address

!

interface FastEthernet0/24

switchport access vlan 3

switchport trunk encapsulation dot1q

switchport mode trunk

no ip address

!

interface Vlan1

ip address 10.1.1.2 255.255.255.0

!

ip classless

ip http server

!

line con 0

line vty 5 15

!

end

Xem các VLAN được cấu hình trên switch của provider II: Switch#show vlan

VLAN Name Status Ports

- -

-1 default active Fa0/2, Fa0/3, Fa0/4, Fa0/25

Fa0/26, Fa0/27, Fa0/28, Fa0/29

Fa0/30, Fa0/31, Fa0/32, Fa0/33

Fa0/34, Fa0/35, Fa0/36, Fa0/37

Fa0/38, Fa0/39, Fa0/40, Fa0/41

Fa0/42, Fa0/43, Fa0/44, Fa0/45

Fa0/46, Fa0/47, Fa0/48, Gi0/1

Gi0/2

2 cus active Fa0/5, Fa0/6, Fa0/7, Fa0/8

Fa0/9, Fa0/10, Fa0/11, Fa0/12

3 sell active Fa0/13, Fa0/14, Fa0/15, Fa0/16

Fa0/17, Fa0/18, Fa0/19, Fa0/20

Fa0/21, Fa0/22, Fa0/23

5 aaa active

7 VLAN0007 active

10 VLAN0010 active Fa0/1

1002 fddi-default active

1003 token-ring-default active

Trang 14

1004 fddinet-default active

1005 trnet-default active

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 - -

-1 enet -10000 -1 -1500 - - - 0 0

2 enet 100002 1500 - - - 0 0

3 enet 100003 1500 - - - 0 0

5 enet 100005 1500 - - - 0 0

7 enet 100007 1500 - - - 0 0

10 enet 100010 1500 - - - 0 0

1002 fddi 101002 1500 - - - 0 0

1003 tr 101003 1500 - - - - srb 0 0

1004 fdnet 101004 1500 - - - ieee - 0 0

1005 trnet 101005 1500 - - - ibm - 0 0

Remote SPAN VLANs

-Primary Secondary Type Ports

- - -

-Kiểm tra các switch láng giềng:

Switch#show cdp ne

Switch#show cdp neighbors detail

-Device ID: Switch

Entry address(es):

IP address: 10.1.1.1

Platform: cisco WS-C3550-24, Capabilities: Switch IGMP

Interface: FastEthernet0/24, Port ID (outgoing port): FastEthernet0/24

Holdtime : 176 sec

Version :

Cisco Internetwork Operating System Software

IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(11)EA1a, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc

Compiled Thu 17-Oct-02 23:29 by antonino

advertisement version: 2

Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27,

value=00000000FFFFFFFF010221FF000000000000000DBC33 2B00FF0000 VTP Management Domain: 'a'

Native VLAN: 1

Trang 15

Duplex: full

Switch#show int trunk

Port Mode Encapsulation Status Native vlan

Fa0/24 on 802.1q trunking 1

Port Vlans allowed on trunk

Fa0/24 1-4094

Port Vlans allowed and active in management domain Fa0/24 1-3,5,7,10

Port Vlans in spanning tree forwarding state and not pruned Fa0/24 1-3,5,7,10

Switch#show dot1q-tunnel

Port

-Fa0/1

Switch#

IV Xem switch của khách hàng X bên phải:

show run

Building configuration

Current configuration : 2311 bytes

!

version 12.1

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Switch

!

enable password cisco

!

ip subnet-zero

!

!

spanning-tree mode pvst

no spanning-tree optimize bpdu transmission

spanning-tree extend system-id

Trang 16

!

interface FastEthernet0/1 switchport mode trunk

!

interface FastEthernet0/2 switchport mode access

!

interface FastEthernet0/3 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/4 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/5 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/6 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/7 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/8 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/9 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/10 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/11 switchport access vlan 7 switchport mode access

!

interface FastEthernet0/12 switchport access vlan 7

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