Cisco Cisco SM-X Layer 2 3 EtherSwitch Service Module

Cisco SM-X Layer 2/3 ESM can directly communicate with any module connected to the backplane switch 
of the router bypassing the router host CPU, thus, increasing the CPU performance and reducing the CPU 
processing. The additional GE connection with the router backplane switch designated as GigabitEthernet 
X/1 port where X is the slot number. This port can be access port or a trunk port.

Following is an example of the configuration assuming a 16 port module is configured in slot 1 and a 24 port 
module in slot 2:-

Configuration on the router: 

interface gigabitethernet 1/1 

 switchport access vlan 10

!

interface gigabitethernet 2/1 

 switchport access vlan 10

Configuration on the 16 port SM-X module in slot 1: 

interface gigabitethernet 0/17

 switchport access vlan 10

!

Configuration on the 24 port SM-X module in slot 2:

interface gigabitethernet 0/25

 switchport access vlan 10

You can apply the trunk port configurations if the port needs to be a trunk port.

 ip-address/subnet-mask

Switch(config-if)#ip address 1.1.1.2 255.255.255.0

Sets a primary or secondary IP address for this 
interface.

IP address here should in the same subnet as 
mentioned in the example in 

Step 5

.

Switch(config-if)#no shutdown

Enables the port that is connected to the TFTP 
server.

You can skip Steps 4 through 6 and 9 
through 11, if there is already reachability 
between host router and switch module.

Switch(config-if)#end

Exits interface configuration mode, and returns to 
privileged EXEC mode.

Switch# copy tftp: flash:

Copies an image from a TFTP server to flash 
memory

The tftp server should be 1.1.1.1 or any other 
reachable ip address from host.