VLAN Configuration Notes

7/30/2019 VLAN Configuration Notes

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CABLING

Crossover Between host and routers

Straight-through Between routers/switches and routers/switches OR host toswitches

Rollover/Console

Between host and routers/switches

Clear configuration

Remove the VLAN databaseSwitch#delete flash:vlan.datDelete filename [vlan.dat]?[Enter]Delete flash:vlan.dat? [confirm] [Enter]

Remove the startup configuration from NVRAMSwitch#erase startup-config

Restart the softwareSwitch#reload

Basic configuration

Privileged modeRouter>enable

Configuration modeRouter#config term

Enter configuration commands, one per line. End with CNTL/Z.

Change device (prompt) nameRouter(config)#hostname Router1

Configure a login bannerRouter(config)#banner login Authorized Personnel Only!

Configure a message of the day bannerRouter(config)#banner motd Authorized Personnel Only!

Set the switch default gatewayS1(config)#ip default-gateway 172.17.99.1

Disable DNS lookupS1(config)#no ip default-gateway

Encrypt privileged exec passwordRouter1(config)#enable secret class

Set console access passwordRouter1(config)#line console 0Router1(config-line)#password ciscoRouter1(config-line)#login

Set telnet access passwordRouter1(config-line)#line vty 0 4

Router1(config-line)#password ciscoRouter1(config-line)#login

Set the interface layer 3 addressRouter1(config-line)#interface fa0/0Router1(config-if)#ip address 192.168.7.126 255.255.255.128Router1(config-if)#no shutdown

Set the interface descriptionRouter1(config-if)#description connection to host1

Exit from configuration modeRouter1(config-if)#end


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Router1#

Initialize all ports in the shutdown stateSwitch#config termSwitch(config)#interface range fa0/1-24Switch(config-if-range)#shutdownSwitch(config-if-range)#interface range gi0/1-2Switch(config-if-range)#shutdown

Configure VTP

Configure the VTP mode (server,client,transparent)

S1(config)#vtp mode server or client or transparent

Device mode already VTP SERVER mode

S1(config)#vtp domain ZYXCORP

Changing VTP domain name from NULL to Lab4

S1(config)#vtp password cisco

Setting device VLAN database password to cisco

S1(config)#end

Configure Trunking

S1(config)#interface range fa0/1-5S1(config-if-range)#switchport mode trunkS1(config-if-range)#switchport trunk native vlan 99S1(config-if-range)#no shutdown

S1(config-if-range)#end

S1#show interface trunk

Configure port security

S2(config)#interface fa0/6S2(config-if)#switchport port-security

S2(config-if)#switchport port-security maximum 1S2(config-if)#switchport port-security mac-address sticky

Configure VLANs

Create VLAN on the switch 1(VTP server) and VTP will advertise the VLANs

configuration

S1(config)#vlan 99S1(config-vlan)#name managementS1(config-vlan)#exitS1(config)#vlan 10S1(config-vlan)#name faculty/staff

S1(config-vlan)#vlan 20S1(config-vlan)#name studentsS1(config-vlan)#vlan 30S1(config-vlan)#name guestS1(config-vlan)#end

S1#show vlan brief

Configure the management interface address on all switches


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ALSwitch(config)#interface vlan 99ALSwitch(config-if)#ip address 172.17.99.11 255.255.255.0ALSwitch(config-if)#no shutdownALSwitch(config-if)#exit

Assign switch ports to VLAN

S3(config)#interface range fa0/6-10S3(config-if-range)#switchport access vlan 30S3(config-if-range)#interface range fa0/11-17S3(config-if-range)#switchport access vlan 10S3(config-if-range)#interface range fa0/18-24S3(config-if-range)#switchport access vlan 20S3(config-if-range)#end

Configure STP

Configuring Port Costs

S1# configure terminal

S1(config)#interface fastethernet 0/1S1(config-if)#spanning-tree cost 25

S1(config-if)#end

Configuring Port priority

S1# configure terminalS1(config)#interface fastethernet 0/1

S1(config-if)#spanning-tree port-priority 112

S1(config-if)#end

Configuring the bridge priority value.


S1(config)#spanning-tree vlan 1 root primary (priority set to 24576 fromdefault 32768)S1(config)#spanning-tree vlan 1 root secondary (priority set to 28672 fromdefault 32768)ORS1(config)#spanning-tree vlan 1 priority 24576 (in increments of 4096

between 0 and 65536)

S1(config)#end

Configuring the spanning tree diameter

S1# configure terminalS1(config)#spanning-tree vlan 1 root primary diameter 5

S1(config)#end

Configuring the Portfast



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S1(config)#interface fastethernet 0/1S1(config-if)#spanning-tree portfastS1(config)#end

Configuring the Rapid-PVST+

S1# configure terminalS1(config)#spanning-tree mode rapid-pvstS1(config)#interface fastethernet 0/1S1(config-if)#spanning-tree link-type point-to-pointS1(config)#endS1#clear spanning-tree detected-protocols

S1#debug spanning-tree events

S1#show spanning-tree

Configure the FastEthernet 0/1 interface on Router.

R1(config)#interface fastethernet 0/1

R1(config-if)#ip address 192.168.1.1 255.255.255.0

R1(config-if)#no shutdown

Configure the Serial 0/0/0 interface on Router DCE port.

R1(config)#interface serial 0/0/0

R1(config-if)#ip address 192.168.2.1 255.255.255.0

R1(config-if)#clock rate 64000


R1#show IP interface brief

Configure the trunking interface on Router.

R1(config)#interface fastethernet 0/1


R1(config-if)#interface fastethernet 0/1.1

R1(config-subif)#encapsulation dot1q 1

R1(config-subif)#ip address 172.17.1.1 255.255.255.0








R1(config-subif)#encapsulation dot1q 99 native



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R1#show IP route

Configure the server LAN interface

R1(config)# interface FastEthernet0/0R1(config-if)#ip address 172.17.50.1 255.255.255.0R1(config-if)#description server interfaceR1(config-if)#no shutdownR1(config-if)#end

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VLAN Configuration Notes