Configuring DDM
CHAPTERS
3. Appendix: Default Parameters
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This guide applies to: T2500G-10TS v2 or above, T2600G-18TS v2 or above, T2600G-28TS v3 or above, T2600G-28MPS v4 or above, T2600G-28SQ v1 or above. |
The DDM (Digital Diagnostic Monitoring) function is used to monitor the status of the SFP modules inserted into the SFP ports on the switch. The user can choose to shut down the monitored SFP port automatically when the specified parameter exceeds the alarm threshold or warning threshold. The monitored parameters include: Temperature, Voltage, Bias Current, Tx Power and Rx Power.
To complete DDM configuration, follow these steps:
1)Enable DDM on the SFP port and configure the shutdown condition.
2)Configure the specified value for warning or alarm threshold.
2.1Using the GUI
2.1.1Configuring DDM Globally
Choose the menu L2 FEATURES > Switching > DDM > DDM Config and select the desired SFP port to load the following page.
Figure 2-1 Configure DDM Globally
Follow these steps to configure the DDM parameters on SFP ports:
1)In the Port Config section, select one or multiple SFP ports to configure DDM parameters.
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DDM Status |
Enable or disable DDM feature on the SFP port. |
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Shutdown |
Specify whether to shut down the port when the alarm threshold or warning threshold is exceeded. Alarm: Shut down the port when the alarm threshold is exceeded. Warning: Shut down the port when the warning threshold is exceeded. None: The port will not be shut down even if the alarm threshold or warning threshold is exceeded. This is the default option. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
2.1.2Configuring the Threshold
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Note: The value of threshold parameters should conform to the following rule: High Alarm ≥ High Warning ≥ Low Warning ≥ Low Alarm. |
Choose the menu L2 FEATURES > Switching > DDM > Threshold Config to load the following page.
Configuring the Temperature Threshold
Figure 2-2 Configure Temperature Threshold
Follow these steps to configure DDM‘s temperature threshold:
1)In the Temperature table, select one or more SFP ports to configure temperature threshold of the SFP ports.
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High Alarm |
Specify the high temperature threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. The valid values are from -128 to 127.996. |
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Low Alarm |
Specify the low temperature threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. The valid values are from -128 to 127.996. |
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High Warning |
Specify the high temperature threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. The valid values are from -128 to 127.996. |
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Low Warning |
Specify the low temperature threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. The valid values are from -128 to 127.996. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
Configuring the Voltage Threshold
Figure 2-3 Configure Voltage Threshold
Follow these steps to configure DDM‘s voltage threshold:
1)In the Voltage table, select one or more SFP ports to configure voltage threshold on the SFP ports.
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High Alarm |
Specify the high voltage threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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Low Alarm |
Specify the low voltage threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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High Warning |
Specify the high voltage threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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Low Warning |
Specify the low voltage threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
Configuring the Bias Current Threshold
Figure 2-4 Configure Bias Current Threshold
Follow these steps to configure DDM‘s bias current threshold:
1)In the Bias Current table, select one or more SFP ports to configure bias current threshold on the SFP ports.
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High Alarm |
Specify the high bias current threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. The valid values are from 0 to 131. |
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Low Alarm |
Specify the low bias current threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. The valid values are from 0 to 131. |
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High Warning |
Specify the high bias current threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. The valid values are from 0 to 131. |
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Low Warning |
Specify the low bias current threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. The valid values are from 0 to 131. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
Configuring the Rx Power Threshold
Figure 2-5 Configure Rx Power Threshold
Follow these steps to configure DDM‘s Rx power threshold:
1)In the RX Power table, select one or more SFP ports to configure Rx power threshold on the SFP ports.
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High Alarm |
Specify the high Rx power threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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Low Alarm |
Specify the low Rx power threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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High Warning |
Specify the high Rx power threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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Low Warning |
Specify the low Rx power threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
Configuring the Tx Power Threshold
Figure 2-6 Configure Tx Power Threshold
Follow these steps to configure DDM‘s Tx power threshold:
1)In the TX Power table, select one or more SFP ports to configure Tx power threshold on the SFP ports.
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High Alarm |
Specify the high Tx power threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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Low Alarm |
Specify the low Tx power threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. The valid values are from 0 to 6.5535. |
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High Warning |
Specify the high Tx power threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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Low Warning |
Specify the low Tx power threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. The valid values are from 0 to 6.5535. |
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LAG |
Displays the LAG number which the port belongs to. |
2)Click Apply.
2.1.3Viewing DDM Status
Choose the menu L2 FEATURES > Switching > DDM > DDM Status to load the following page.
Figure 2-7 View DDM Status
In the Port Config table, view the current operating parameters for the SFP modules inserted into the SFP ports.
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Temperature |
The current temperature of the SFP module inserted into this port. |
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Voltage |
The current voltage of the SFP module inserted into this port. |
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Bias Current |
The current bias current of the SFP module inserted into this port. |
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Tx Power |
The current Tx power of the SFP module inserted into this port. |
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Rx Power |
The current Rx power of the SFP module inserted into this port. |
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Data Ready |
Indicates whether SFP module is operational. The values are True and False. |
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Loss of Signal |
Reports local SFP module signal loss. The values are True and False. |
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Transmit Fault |
Reports remote SFP module signal loss. The values are True, False and No Signal. |
2.2Using the CLI
2.2.1Configuring DDM Globally
Follow these steps to enable DDM on specified SFP ports:
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm state enable Enable DDM on this SFP port. |
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Step 4 |
show ddm configuration state Display the DDM state of the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to enable DDM status on SFP port 1/0/25:
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/25
Switch(config-if)#ddm state enable
Switch(config-if)#show ddm configuration state
DDM Status Shutdown
Gi1/0/25 Enable None
...
Switch(config-if)#end
Switch#copy running-config startup-config
2.2.2Configuring DDM Shutdown
Follow these steps to configure settings for shutting down SFP ports when the alarm threshold or warning threshold is exceeded:
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm shutdown { none | warning | alarm } none: The port will not be shut down if the alarm threshold or warning threshold is exceeded. warning: Shut down the port when the warning threshold is exceeded. alarm: Shut down the port when the alarm threshold is exceeded. |
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Step 4 |
show ddm configuration state Display the DDM state of the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/25 to shut down when the warning threshold is exceeded.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/25
Switch(config-if)#ddm shutdown warning
Switch(config-if)#show ddm configuration state
DDM Status Shutdown
Gi1/0/25 Enable Warning
...
Switch(config-if)#end
Switch#copy running-config startup-config
2.2.3Configuring the Threshold
Configuring Temperature Threshold
Follow these steps to configure the threshold of the DDM temperature on the specified SFP port.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm temperature_threshold { high_alarm | high_warning | low_alarm | low_warning } value high_alarm: Specify the high threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. high_warning: Specify the high threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. low_alarm: Specify the low threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. low_warning: Specify the low threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. value: Enter the threshold value in Celsius. The valid values are from -128 to 127.996. |
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Step 4 |
show ddm configuration temperature Display the DDM temperature threshold on the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/27’s high alarm temperature threshold as 110 Celsius.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/27
Switch(config-if)#ddm temperature_threshold high_alarm 110
Switch(config-if)#show ddm configuration temperature
Temperature Threshold(Celsius) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 110.000000 -- -- --
...
Switch(config-if)#end
Switch#copy running-config startup-config
Configuring Voltage Threshold
Follow these steps to configure the threshold of the DDM voltage on the specified SFP port.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm voltage_threshold { high_alarm | high_warning | low_alarm | low_warning } value high_alarm: Specify the high threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. high_warning: Specify the high threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. low_alarm: Specify the low threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. low_warning: Specify the low threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. value: Enter the threshold value in V. The valid values are from 0 to 6.5535. |
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Step 4 |
show ddm configuration voltage Display the DDM voltage threshold of the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/27’s high alarm threshold voltage as 5 V.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/27
Switch(config-if)#ddm vlotage_threshold high_alarm 5
Switch(config-if)#show ddm configuration voltage
Voltage Threshold(V) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 5.000000 -- -- --
...
Switch(config-if)#end
Switch#copy running-config startup-config
Configuring Bias Current Threshold
Follow these steps to configure the threshold of the DDM bias current on the specified SFP port.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm bias_current_threshold { high_alarm | high_warning | low_alarm | low_warning } value high_alarm: Specify the high threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. high_warning: Specify the high threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. low_alarm: Specify the low threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. low_warning: Specify the low threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. value: Enter the threshold value in mA. The valid values are from 0 to 131. |
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Step 4 |
show ddm configuration bias_current Display the DDM bias current threshold of the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/27’s high alarm threshold bias current as 120 mA.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/17
Switch(config-if)#ddm vlotage_threshold high_alarm 120
Switch(config-if)#show ddm configuration bias_current
Voltage Threshold(V) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 120.000000 -- -- --
...
Switch(config-if)#end
Switch#copy running-config startup-config
Configuring Rx Power Threshold
Follow these steps to configure the threshold of the DDM Rx power on the specified SFP port.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm rx_power_threshold { high_alarm | high_warning | low_alarm | low_warning } value high_alarm: Specify the high threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. high_warning: Specify the high threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. low_alarm: Specify the low threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. low_warning: Specify the low threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. value: Enter the threshold value in mW. The valid values are from 0 to 6.5535. |
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Step 4 |
show ddm configuration rx_power Display the DDM rx power threshold on the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/27’s high alarm threshold Rx power as 6 mW.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/27
Switch(config-if)#ddm rx_power_threshold high_alarm 6
Switch(config-if)#show ddm configuration rx_power
Rx Power Threshold(mW) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 6.000000 -- -- --
...
Switch(config-if)#end
Switch#copy running-config startup-config
Configuring Tx Power Threshold
Follow these steps to configure the threshold of the DDM Tx power on the specified SFP port.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
interface { fastEthernet port | range fastEthernet port-list | gigabitEthernet port | range gigabitEthernet port-list | ten-gigabitEthernet port | range ten-gigabitEthernet port-list } Enter interface configuration mode. |
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Step 3 |
ddm tx_power_threshold { high_alarm | high_warning | low_alarm | low_warning } value high_alarm: Specify the high threshold for the alarm. When the operating parameter rises above this value, action associated with the alarm will be taken. high_warning: Specify the high threshold for the warning. When the operating parameter rises above this value, action associated with the warning will be taken. low_alarm: Specify the low threshold for the alarm. When the operating parameter falls below this value, action associated with the alarm will be taken. low_warning: Specify the low threshold for the warning. When the operating parameter falls below this value, action associated with the warning will be taken. value: Enter the threshold value in mW. The valid values are from 0 to 6.5535. |
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Step 4 |
show ddm configuration tx_power Display the DDM tx power threshold on the SFP ports. |
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Step 5 |
end Return to Privileged EXEC Mode. |
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Step 6 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to set SFP port 1/0/27’s high alarm threshold Tx power as 6mW.
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/27
Switch(config-if)#ddm tx_power_threshold high_alarm 6
Switch(config-if)#show ddm configuration tx_power
Tx Power Threshold(mW) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 6.000000 -- -- --
...
Switch(config-if)#end
Switch#copy running-config startup-config
2.2.4Viewing DDM Configuration
Follow these steps to view the DDM configuration.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
show ddm configuration { state | temperature | voltage | bias_current | tx_power | rx_power} state: Displays the DDM configuration state. temperature: Displays the threshold of the DDM temperature value. voltage: Displays the threshold of the DDM voltage value. bias_current: Displays the threshold of the DDM bias current value. tx_power: Displays the threshold of the DDM Tx Power value. rx_power: Displays the threshold of the DDM Rx Power value. |
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Step 3 |
end Return to Privileged EXEC Mode. |
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Step 4 |
copy running-config startup-config Save the settings in the configuration file. |
The following example shows how to view SFP ports‘ Rx power threshold.
Switch#configure
Switch(config)#show ddm configuration rx_power
Rx Power Threshold(mW) :
High Alarm Low Alarm High Warning Low Warning
Gi1/0/27 6.000000 -- -- --
...
Switch(config)#end
2.2.5Viewing DDM Status
Follow these steps to view the DDM status, which is the digital diagnostic monitoring status of SFP modules inserted into the switch’s SFP ports.
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Step 1 |
configure Enter global configuration mode. |
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Step 2 |
show ddm status Displays all the monitoring status of SFP modules. |
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Step 3 |
end Return to Privileged EXEC Mode. |
The following example shows how to view SFP ports’ DDM status.
Switch#configure
Switch(config)#show ddm status
Temperature(C) Voltage(V) Bias Current(mA) Tx Power(mW) Rx Power(mW) Data Ready Rx Los Tx Fault
Gi1/0/27 -- -- -- -- -- -- -- --
Gi1/0/28 -- -- -- -- -- -- -- --
Switch(config)#end
Default settings of DDM are listed in the following table.
Table 3-1Default Settings of DDM
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Parameter |
Default Setting |
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DDM Status |
Enabled. All the SFP ports are being monitored. |
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Shutdown |
None. The port will not be shut down even if the alarm or warning threshold is exceeded. |