CCNA Experiment 13 STP Load Balancer

CCNA Experiment 13 STP the Load Balancer

Environment: Windows XP , GNS3.0.7

Purpose: Learn how to Achieve load balancing in STP

Description: The load balancing of STP is actually the use of another blocking link in the loop to share the load in the network

steps:

Open the GNS to build the project with the following topology:

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Note: to SW1 and the SW2 Two devices add switch module ("Nm-16esw"), View two devices Console Port:

SW1 : 2002 , SW2 : 2003.

2 , Configuration SW1 , SW2

A , open cmd command-line Input " telnet 127.0.0.1 2002 the login SW1 to do the following:

router>en

Router#conf T

Router (config) #host SW1

SW1 (config) #exit

Sw1#vlan Database

SW1 (VLAN) #vlan name V10

SW1 (VLAN) #vlan name V20

SW1 (VLAN) #exit

Sw1#conf T

SW1 (config) #int range fa0/0, FA0/5

SW1 (config-if-range) #switchport trunk Encapsulation dot1q

SW1 (config-if-range) #switchport mode trunk

SW1 (config-if-range) #no sh

SW1 (Config-if-range) #end

B , open cmd command-line Input " telnet 127.0.0.1 2003 the login SW2 to do the following:

router>en

Router#conf T

Router (config) #host SW2

SW2 (config) #exit

Sw2#vlan Database

SW2 (VLAN) #vlan name V10

SW2 (VLAN) #vlan name V20

SW2 (VLAN) #exit

Sw2#conf T

SW2 (config) #int range fa0/0, FA0/5

SW2 (config-if-range) #switchport trunk Encapsulation dot1q

SW2 (config-if-range) #switchport mode trunk

SW2 (config-if-range) #no sh

SW2 (Config-if-range) #end

sw2#

C , view SW1 of the VLAN 10 and VLAN 20 in STP Status:

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D , view SW2 of the VLAN 10 and VLAN 20 in STP Status:

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3 , analyze the current environment

     the situation viewed from abovecan be seen inSW1as the root bridge,SW2of theFA0/5the port is in a blocked state, andVLAN Tenand theVlan20are inSW1with theSW2of thefa0/0---fa0/0a link running above, which obviously wasted the linkFA0/5-FA0/5, whilefa0/0-fa0/0there are two of them running on this link .VLANIt's a lot of pressure..so the shunt, which is load balancing, allowsVLAN TenRunfa0/0-fa0/0, VLANRunFA0/5-FA0/5. The following is a load balancing configuration operation.

4. Log in to SW1 to do the following:

sw1>en

Sw1#conf T

SW1 (config) #int FA0/5

SW1 (config-if) #spanning-tr VLAN port-priority 16

SW1 (config-if) #end

Check Again SW2 on VLAN Ten and the VLAN State of:

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apparently nowVLAN Tenrunning inSW1and theSW2of thefa0/0-fa0/0this link, andVLANrunning inSW1and theSW2of theFA0/5-FA0/5this link, so the purpose of load balancing has been achieved.

This article from "Liu Fengyuan" blog, declined reprint!

CCNA Experiment 13 STP Load Balancer