cisco,思科,网络工程师,实验 (239)

CCNA Discovery

Designing and Supporting Computer Networks

Lab 7.3.3 Configuring and Testing the Rapid Spanning Tree Prototype

Device

Designation Device Name IP Address Subnet Mask Default Gateway

R1 BR4 Fa0/0.1

10.0.0.1

Fa0/0.10

10.10.10.254

Fa0/0.20

10.10.20.254

255.255.255.0

255.255.255.0

255.255.255.0

S1 FC-ASW-1 VLAN1: 10.0.0.2 255.255.255.0 10.0.0.1

S2 ProductionSW

VLAN1:

10.0.0.3 255.255.255.0 10.0.0.1

H1 H1 10.10.10.10 255.255.255.0

10.10.10.254 H2 H2 10.10.20.10 255.255.255.0

10.10.20.254 H3 H3 10.10.10.11 255.255.255.0

10.10.10.254 H4 H4 10.10.20.11 255.255.255.0

10.10.20.254Objectives

•Configure trunking on trunk ports to provide access to a router on the network.

•Configure separate VLANs for separate logical networks for production users and the server farm.

•Verify inter-VLAN connectivity.

•Enable RSTP and configure the root switch and backup root switch.

•Verify that the network can converge after inducing link and switch failures.

0-802 CCNA Exam Objectives

This lab contains skills that relate to the following CCNA exam objectives:

•Describe enhanced switching technologies, including: VTP, RSTP, VLAN, PVSTP, 802.1q.

•Verify network status and switch operation using basic utilities (including: ping, traceroute, Telnet, SSH, arp, ipconfig), and show and debug commands.

•Configure, verify, and troubleshoot RSTP operation.

Expected Results and Success Criteria

Before starting this lab, read through the tasks that you are expected to perform. What do you expect the result of performing these tasks will be?

______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ How will the tests performed in the lab illustrate the purpose of the Rapid Spanning Tree Protocol?

______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ Background / Preparation

The network designer has developed a test plan for the proposed FilmCompany server farm. The tests depend on the ability of the technicians to configure the switches to use STP, because the server farm test topology implements redundant switched links. In this lab, you will review the basic functionality Cisco Rapid PVST.

Task 1: Configure all devices

Step 1: Configure S1 and S2

Configure the host name, access, and command mode passwords on each switch.

Step 2: Configure interface VLAN 1

Configure the VLAN1 IP address and default gateway on each switch.Step 3: Configure FC-ASW-1 for server and end user VLANs

VLAN Number VLAN Name

10 Servers

20 Users

Step 4: Configure ProductionSW for server and end user VLANs

VLAN Number VLAN Name

10 Servers

20 Users

Step 5: Assign ports to VLANs on FC-ASW-1

FC-ASW-1#configure terminal

FC-ASW-1(config)#interface Fa0/5

FC-ASW-1(config-if)#switchport mode access

FC-ASW-1(config-if)#switchport access VLAN10

FC-ASW-1(config-if)#interface Fa0/6

FC-ASW-1(config-if)#switchport mode access

FC-ASW-1(config-if)#switchport access VLAN20

Step 6: Assign ports to VLANs on ProductionSW

ProductionSW#configure terminal

ProductionSW(config)#interface Fa0/5

ProductionSW(config-if)#switchport mode access

ProductionSW(config-if)#switchport access VLAN10

ProductionSW(config-if)#interface Fa0/6

ProductionSW(config-if)#switchport mode access

ProductionSW(config-if)#switchport access VLAN20

Step 7: Configure trunk ports on FC-ASW-1 to the router and ProductionSW FC-ASW-1(config)#interface Fa0/1

FC-ASW-1(config-if)#switchport mode trunk

FC-ASW-1(config-if)#interface Fa0/2

FC-ASW-1(config-if)#switchport mode trunk

FC-ASW-1(config-if)#interface Fa0/4

FC-ASW-1(config-if)#switchport mode trunk

Step 8: Configure trunk ports on ProductionSW to FC-ASW-1

ProductionSW(config)#interface Fa0/2

ProductionSW(config-if)#switchport mode trunk

ProductionSW(config-if)#interface Fa0/4

ProductionSW(config-if)#switchport mode trunkStep 9: Configure VTP on both switches

FC-ASW-1#vlan database

FC-ASW-1(vlan)#vtp server

Step 10: Configure ProductionSW to be a VTP client

ProductionSW#vlan database

ProductionSW(vlan)#vtp client

ProductionSW(vlan)#vtp domain ServerFarm

Step 11: Configure Rapid Spanning Tree Protocol

On each switch, configure Per-VLAN Rapid Spanning Tree Protocol.

FC-ASW-1(config)#spanning-tree mode rapid-pvst

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

Step 12: Perform basic router configuration

Configure hostname, passwords, and line access on R1.

Step 13: Configure Subinterface Fa0/0

BR4#configure terminal

BR4(config)#interface Fa0/0

BR4(config-if)#no shut

BR4(config-if)#interface Fa0/0.1

BR4(config-subif)#description VLAN1

BR4(config-subif)#encapsulation dot1q 1

BR4(config-subif)#ip address 10.0.0.1 255.255.255.0

BR4(config-subif)#interface Fa0/0.10

BR4(config-subif)#description VLAN10

BR4(config-subif)#encapsulation dot1q 10.

BR4(config-subif)#ip address 10.10.10.254 255.255.255.0

BR4(config-subif)#interface Fa0/0.20

BR4(config-subif)#description VLAN20

BR4(config-subif)#encapsulation dot1q20

BR4(config-subif)#ip address 10.10.20.254 255.255.255.0

BR4(config-subif)#end

BR4#

Step 14: Configure two hosts for server VLAN, and two hosts for end user VLAN

a. H1 and H3 should be given IP addresses in the Servers VLAN, with a default gateway of

10.10.10.254.

b. H2 and H4 should be given IP addresses in the Users VLAN, with a default gateway of 10.10.20.254. Task 2: Perform basic connectivity tests

Step 1: Test intra-VLAN connectivity

a. Ping from H1 to H3.

Is the ping successful? __________

If the ping fails, troubleshoot the configuration on the hosts and the VLAN configuration on the

switches.

b. Ping from H2 to H4.Is the ping successful? __________

If the ping fails, troubleshoot the configuration on the hosts and the VLAN configuration on the

switches.

Step 2: Test inter-VLAN connectivity

Ping from a host on the Servers VLAN to a host on the Users VLAN.

Is the ping successful? __________

If the ping fails, troubleshoot the router and switch configurations.

Task 3: Introduce link and device failures into the network, and observe results

Step 1: Determine the port status of the spanning tree on the server switch

FC-ASW-1#show span

VLAN0010

Spanning tree enabled protocol ieee

Root ID Priority 32778

Address 0030.F2C9.90A0

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)

Address 0090.21AC.0C10

Aging Time 300

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.3 Shr

Fa0/2 Root FWD 19 128.3 Shr

Fa0/4 Altn BLK 19 128.3 Shr

Fa0/5 Desg FWD 19 128.3 Shr

VLAN0020

Spanning tree enabled protocol ieee

Root ID Priority 32788

Address 0030.F2C9.90A0

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32788 (priority 32768 sys-id-ext 20)

Address 0090.21AC.0C10

Aging Time 300

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.3 Shr

Fa0/2 Root FWD 19 128.3 Shr

Fa0/4 Altn BLK 19 128.3 Shr

Fa0/6 Desg FWD 19 128.3 Shr

Which port is not currently participating in forwarding data? __________

Step 2: Induce a link failure on the server switch

Remove the cable from one of the forwarding ports on FC-ASW-1.

Step 3: View the adjustment to the spanning-tree

Re-issue the show span command.

How long did it take the switches to determine and utilize a backup link? __________Step 4: Induce a device failure on the network

Turn off the ProductionSW switch.

Ping from H1 to H2.

Was the ping successful? __________

Step 5: Reflect on the test results

In a network with multiple branch offices, why is the use of Rapid Spanning Tree Protocol important?

_____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Why is it important when implementing a server farm?

_____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________