How to configure backup link into switch interface

[Arup Dutta]

Hi all ,

    I have two 3750 switch.switch A(main) and switch B is connected by OFC but i have another wireless link for backup.Now if OFC goes down then i manually connect wireless link with switch B  for this reasons i am faceing a lot of problem.

I want without any changing of cable if my primary link goes down then my backup link automaticaly goes up and vice versa .

Switch-A port gi1/0/9 and Switch-B port gi1/0/9 is connect by OFC

Switch-A port gi1/0/8 and Switch-B port gi1/0/8 is connect by Wireless link (backup)

i attach my network diagram kindly find the attachment file.

please guide me about this problem.

Regards,

Arup

[Mahesh Gohil]

Hello Arup,

Please go through below link

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.2_25_see/configuration/guide/swflink.html

Regards

Mahesh

[Arup Dutta]

Hi Mahesh,

Thanks for your reply.Already i did learn it but i need more

concept so i can implement with my live network.

I have two switch ,switch-A (main switch) and Switch-B

Switch-A port gi1/0/9 and Switch-B port gi1/0/9 is connect by OFC

Switch-A port gi1/0/8 and Switch-B port gi1/0/8 is connect by Wireless link

(backup)

what switch i need put this command and what interface

*

Switch(conf)# interface gigabitethernet ?

Switch(conf-if)# switchport backup interface gigabitethernet ?

*

waiting for your reply

Arup

On Wed, Jan 19, 2011 at 1:47 PM, mahesh.gohil <

[Mahesh Gohil]

Hi Arup,

Thanks for clarification.

probably config will be like below if OFC is your primary link

On SwitchA

#int gi1/0/9

#switchport backup interface gi1/0/8

On SwitchB

#int gi1/0/9

#switchport backup interface gi1/0/8

Hope this helps

Regards

Mahesh