1.1实验任务
配置交换机的优先级，实现网络的负载分担，并配置骨干交换机之间的EhternetChannel
1.2试验环境和网络拓扑
1.3完成标准
(1)按照拓扑图连接交换机。
(2)在交换机上配置VLAN，启用STP，实现不同的VLAN选择不同的根网桥，实现负载分担。
(3)在接入交换机上配置上行速链路。
(4)配置接入交换机连接主机的端口为速端口。
(5)在两台核心交换机之间配置以太网通道。
2.详细操作步骤
Step 1：在交换机上添加VLAN
在交换机A、B、C和D上添加VLAN 2、3、4
配置各交换机之间连接的接口为Trunk模式
交换机A配置如下：
A#conf t
Enter configuration commands, one per line.End with CNTL/Z.
A(config)#interface range f0/1 – 2
A(config-if-range)#switchport mode trunk//配置端口1~2为中继
A(config-if-range)#
*Mar1 00:04:01.611: %DTP-5-TRUNKPORTON: Port Fa0/1-2 has become dot1q trunk
A(config-if-range)#interface range f0/10 – 11//配置端口11~12为中继
A(config-if-range)#switchport mode trunk
A(config-if-range)#
*Mar1 00:04:36.191: %DTP-5-TRUNKPORTON: Port Fa0/10-11 has become dot1q trunk
A(config-if-range)#exit
A(config)#exit
A#
A#vlan database
A(vlan)#vtp domain 2t57//配置VTP域为2t57
Changing VTP domain name from NULL to 2t57
A(vlan)#vtp server
Device mode already VTP SERVER.//配置VTP模式为Server
A(vlan)#exit
APPLY completed.
Exiting….
A#
A#vlan database
A(vlan)#vlan 2 name VLAN2
VLAN 2 added:
Name: VLAN2
A(vlan)#vlan 3 name VLAN3
VLAN 3 added:
Name: VLAN3
A(vlan)#vlan 4 name VLAN4
VLAN 4 added:
Name: VLAN4
A(vlan)#exit
APPLY completed.//添加VLAN 2、3、4
Exiting….
A#
A#show vlan-s
VLAN NameStatusPorts
—- ——————————– ——— ——————————-
1defaultactiveFa0/0, Fa0/3, Fa0/4, Fa0/5
Fa0/6, Fa0/7, Fa0/8, Fa0/9
Fa0/12, Fa0/13, Fa0/14, Fa0/15
2VLAN2active
3VLAN3active
4VLAN4active
1002 fddi-defaultactive
1003 token-ring-defaultactive
1004 fddinet-defaultactive
1005 trnet-defaultactive
VLAN TypeSAIDMTUParent RingNo BridgeNo StpBrdgMode Trans1 Trans2
—- —– ———- —– —— —— ——– —- ——– —— ——
1enet1000011500—–10021003
2enet1000021500—–00
3enet1000031500—–00
4enet1000041500—–00
1002 fddi1010021500—–11003
1003 tr101003150010050–srb11002
1004 fdnet 1010041500–1ibm-00
VLAN TypeSAIDMTUParent RingNo BridgeNo StpBrdgMode Trans1 Trans2
—- —– ———- —– —— —— ——– —- ——– —— ——
1005 trnet 1010051500–1ibm-00
A#
A#show interface f0/1 switchport//查看端口1
Name: Fa0/1
Switchport: Enabled//端口开启
Administrative Mode: trunk//管理模式：中继
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q//管理中继封装：802.1Q
Operational Trunking Encapsulation: dot1q//运行中继封装：802.1Q
Negotiation of Trunking: Disabled//中继协商：未开启
Access Mode VLAN: 0 ((Inactive))//VLAN通过模式：0(非活动)
Trunking Native Mode VLAN: 1 (default)//本地VLAN中继模式：1(默认)
Trunking VLANs Enabled: ALL//多VLAN中继开启：所有
Trunking VLANs Active: 1-4//活动的中继多VLAN：1-4
Priority for untagged frames: 0//未标记的帧优先级：0
Override vlan tag priority: FALSE//超量标记帧优先级：错误
Voice VLAN: none//语音VLAN：无
Appliance trust: none//信任的运行：无
A#show interface f0/2 switchport//查看端口2
Name: Fa0/2
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
A#show interface f0/10 switchport//查看端口10
Name: Fa0/10
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
A#show interface f0/11 switchport//查看端口11
Name: Fa0/11
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
交换机B配置如下：
B#conf t
Enter configuration commands, one per line.End with CNTL/Z.
B(config)#interface range f0/1 – 2//配置端口1-2为中继
B(config-if-range)#switchport mode trunk
B(config-if-range)#
*Mar1 00:05:18.543: %DTP-5-TRUNKPORTON: Port Fa0/1-2 has become dot1q trunk
B(config-if-range)#interface range f0/10 – 11//配置端口10-11为中继
B(config-if-range)#switchport mode trunk
B(config-if-range)#
*Mar1 00:05:45.963: %DTP-5-TRUNKPORTON: Port Fa0/10-11 has become dot1q trunke
xit
B(config)#exit
B#
B#vlan database
B(vlan)#vtp domain 2t57//配置VTP域名为2t57
Domain name already set to 2t57 .
B(vlan)#exit
APPLY completed.
Exiting….
B#
B#show vlan-s
VLAN NameStatusPorts
—- ——————————– ——— ——————————-
1defaultactiveFa0/0, Fa0/3, Fa0/4, Fa0/5
Fa0/6, Fa0/7, Fa0/8, Fa0/9
Fa0/12, Fa0/13, Fa0/14, Fa0/15
2VLAN2active
3VLAN3active
4VLAN4active//VTP同步VLAN成功
1002 fddi-defaultactive
1003 token-ring-defaultactive
1004 fddinet-defaultactive
1005 trnet-defaultactive
VLAN TypeSAIDMTUParent RingNo BridgeNo StpBrdgMode Trans1 Trans2
—- —– ———- —– —— —— ——– —- ——– —— ——
1enet1000011500—–10021003
2enet1000021500—–00
3enet1000031500—–00
4enet1000041500—–00
1002 fddi1010021500-0—11003
1003 tr101003150010050–srb11002
1004 fdnet 1010041500–1ibm-00
VLAN TypeSAIDMTUParent RingNo BridgeNo StpBrdgMode Trans1 Trans2
—- —– ———- —– —— —— ——– —- ——– —— ——
1005 trnet 1010051500–1ibm-00
B#
B#show interface f0/1 switchport//查看端口1
Name: Fa0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
B#show interface f0/2 switchport//查看端口2
Name: Fa0/2
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
B#show interface f0/10 switchport//查看端口10
Name: Fa0/10
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-4
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
B#show interface f0/11 switchport//查看端口11
Name: Fa0/11
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk//运行模式：中继
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)