How to Configure EtherSwitch Modules in 2851-2821 and Changing the 3750 IOS on the EtherSwitch.

In this guide i am going to focus on how to add EtherSwitch modules in cisco 2851 and 2821 and changing the IOS on the EtherSwitch. cisco 2851 can reside a 48 port EtherSwitch module. i am going to describe this step by step.

http://www.cisco.com/en/US/prod/collateral/routers/ps259/product_data_sheet09186a00801aca3e.html

1 - Remove the Steel clamping on the back to insert the module.

2 - Now insert the module and push it gently until you are satisfied the module is completely inside, this step can be a little daunting because initially it took quite a while to set up the module correctly in the slot, The module wont come up if it isn't inserted correctly, it took a number of insertions and removals until the module finally came up so keep trying if you are having difficulties in inserting the module, in the latter releases it took much less time to set up the module. cisco 24 port Etherswitch module took less time to set up i guess beacuse of the special handle provided with the module.

3 - Next step is to access the module.

4 - Go to routers CLI and give an IP address to the GigabitEthernet 1/0 interface (may be diffrernt in your case), if you type #sh ip interface brief you can clearly see one gig interface is seperatly mentioned right at the bottom of the output that is your gig interface i.e your backplane connectivity to the router. assign an IP address to the interface and a #no shut. the backplane interface is UP.

5 - now type #Service-module GigabitEthernet 1/0 session , to access the module once you have accessed you can update the Image on the Switch.

6 - To Update the IOS on the switch start the TFTPD on the PC connected to FastEthernet interface. on the EtherSwitch Module issue the following commands.

7 - make this interface routed port assign an IP address to this interface.

8 - start the TFTPD on the PC.

9 - issue the following commands on the switch CLI.

10 - #copy tftp flash: , give the required IP address and the name of the IOS file the output will show exclamation marks and the copying will start.

11 - #boot system flash:IOS-name.bin to set the new IOS.

12 - #wr er this will not erase the boot system flash command.

13 - To go back to the router CLI press ctrl+shift+6 and then press "x".

14 - #disconnect ,to terminate the session with the router CLI.