Technical data

Cisco SM-X Layer 2/3 EtherSwitch Service Module Configuration Guide for Cisco 4451-X ISR

How to Configure the Cisco SM-X Layer 2/3 ESM on the Router

Cisco SM-X Layer 2/3 EtherSwitch Service Module Configuration Guide for Cisco 4451-X ISR

Sample Output for the hw-module subslot slot/sub slot reload Command

The following example shows what appears when you enter the hw-module subslot

slot-number/subslot-number reload command:

Router# hw-module subslot 1/0 reload

Proceed with reload of module? [confirm]

Router#

*Jun 21 16:32:58.017 IST: %IOSXE_OIR-6-SOFT_RELOADSPA: SPA(SM-X-ES3-16-P) reloaded on

subslot 1/0

*Jun 21 16:32:58.018 IST: %SPA_OIR-6-OFFLINECARD: SPA (SM-x-ES3-16-P) offline in subslot

2/0At the confirmation prompt, press Enter to confirm the action or n to cancel.

Monitoring Real-Time Power Consumption (Power Sensing)

Cisco SM-X Layer 2/3 ESMs’ hardware allows the ESM to accurately monitor the real-time power

consumption on each port by measuring the port current as well as the voltage while the powered devices

such as IP phones and wireless access points are powered up.

If a powered device is misbehaving by consuming more power than the actual configured value, you can

take an appropriate ‘action’ by enabling the power policing or sensing feature on a port using the power

inline command. The ‘action’ is either “logging a warning message” (also knows as lax policing) or

shutting down a misbehaving port (strict policing). The ESM constantly monitors the power drawn by

the powered devices and takes appropriate action on misbehaving ports. You can monitor the power

drawn by the powered devices through power inline command.

When power policing is enabled on a port, you can pick a cutoff power value of “x” watts per port and

choose an ‘action’ to be taken on the misbehaving ports. Power policing is disabled by default on all

ports.

Note You must take the cable loss into consideration when configuring the power monitoring or power

policing value for a given port of the switch. There might be some cable loss while configuring power

cutoff value at the PSE. The switch can only police the power drawn at the PSE RJ45 port and not the

actual power consumed by the powered device.

Restrictions

• Because the switch can only monitor the power drawn at the PSE RJ45 port and not what the PD

actually consumes, you must plan for the worst case cable loss when configuring the power cutoff

value.

• When power drawn by the power devices exceeds the maximum limit after a period of 1 second or

more, the system considers the ports as, “misbehaving ports” and shuts down the power supply.

SUMMARY STEPS

1. config terminal

2. interface gigabitethernet 0/x

3. power inline max max-wattage

4. power inline police action action

5. exit