System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches

Global Status Monitoring Alarms

The switch processes alarms related power supply conditions, referred to as global or facility alarms.

FCS Error Hysteresis Threshold

The Ethernet standard calls for a maximum bit error rate of 10-8. On the switch, the bit error rate range is from 10-6 to 10-11. The bit error rate input to the switch is a positive exponent. If you want to configure the bit error rate of 10-9, enter the value 9 for the exponent. By default, the FCS bit error rate is 10-8.

You can set the FCS error hysteresis threshold to prevent the toggle of the alarm when the actual bit error rate fluctuates near the configured rate. The hysteresis threshold is defined as the ratio between the alarm clear threshold to the alarm set threshold, expressed as a percentage value.

For example, if the FCS bit error rate alarm value is configured to 10–8, that value is the alarm set threshold. To set the alarm clear threshold at 5*10-10, the hysteresis, value h , is determined as follows:

h = alarm clear threshold / alarm set threshold

h = 5*10-10 / 10-8 = 5*10-2 = 0.05 = 5 percent

The FCS hysteresis threshold is applied to all ports on the switch. The allowable range is from 1 to 10 percent. The default value is 10 percent. See the “Configuring the FCS Bit Error Rate Alarm” section for more information.

Port Status Monitoring Alarms

The switch can also monitor the status of the Ethernet ports and generate alarm messages based on the alarms listed in Table 5-2 . To save user time and effort, it supports changeable alarm configurations by using alarm profiles. You can create a number of profiles and assign one of these profiles to each Ethernet port.

Alarm profiles provide a mechanism for you to enable or disable alarm conditions for a port and associate the alarm conditions with one or both alarm relays. You can also use alarm profiles to set alarm conditions to send alarm traps to an SNMP server and system messages to a syslog server. The alarm profile defaultPort is applied to all interfaces in the factory configuration (by default).

NoteYou can associate multiple alarms to one relay or one alarm to both relays.

Table 5-2 lists the port status monitoring alarms and their descriptions and functions. Each fault condition is assigned a severity level based on the Cisco IOS System Error Message Severity Level.

Triggering Alarm Options

The switch supports these methods for triggering alarms:

• Configurable Relay

The switch is equipped with one independent alarm relay that can be triggered by alarms for global and port status conditions. You can configure the relay to send a fault signal to an external alarm device, such as a bell, light, or other signaling device. You can associate any alarm condition with the alarm relay. Each fault condition is assigned a severity level based on the Cisco IOS System Error Message Severity Level.

See the “Configuring Switch Alarms” section for more information on configuring the relay.

• SNMP Traps

SNMP is an application-layer protocol that provides a message format for communication between managers and agents. The SNMP system consists of an SNMP manager, an SNMP agent, and a management information base (MIB).

The snmp-server enable traps command can be changed so that the user can send alarm traps to an SNMP server. You can use alarm profiles to set environmental or port status alarm conditions to send SNMP alarm traps. See the “Enabling SNMP Traps” section for more information.

• Syslog Messages

You can use alarm profiles to send system messages to a syslog server. See the “Configuring Switch Alarms” section for more information.

BEFORE YOU BEGIN

Review the “Global Status Monitoring Alarms” section.

DETAILED STEPS

To delete the alarm description, enter the no alarm contact contact-number description privileged EXEC command. To set the alarm severity to minor (the default), enter the no alarm contact { contact-number | all } severity . To set the alarm contact trigger to closed (the default), enter the no alarm contact { contact-number | all } trigger.

To see the alarm configuration and status, enter the show env alarm-contact privileged EXEC command.

For more detailed information about the alarm commands, see the command reference listed in the “Related Documents” section.

NoteThe switch supports the CISCO-ENTITY-ALARM-MIB for these alarms.

EXAMPLE

This example configures alarm input 2 named door sensor to assert a major alarm when the door circuit is closed and then displays the status and configuration for all alarms:

Configuring the Power Supply Alarms

The presence of power supplies is dynamically detected. Use the show env power command in privileged EXEC or user EXEC mode to display power information for the switch.

Use the alarm facility power-supply rps global configuration command to associate the switch redundant power supply (RPS) alarm to the relay. You can also configure all alarms and traps associated with the RPS to be sent to syslog and the SNMP server.

BEFORE YOU BEGIN

Before you can use the notifies command to send alarm traps to an SNMP server, you must first set up the SNMP server by using the snmp-server enable traps alarms global configuration command. See the “Enabling SNMP Traps” section.

DETAILED STEPS

To disable sending the alarm to a relay, to syslog, or to an SNMP server, use the no alarm facility power-supply rps relay , no alarm facility power-supply rps notifies , or no alarm facility power-supply rps syslog global configuration commands.

EXAMPLE

This example sets the RPS monitoring alarm to the major relay:

Configuring the FCS Bit Error Rate Alarm

• Setting the FCS Error Threshold
• Setting the FCS Error Hysteresis Threshold

Setting the FCS Error Threshold

The switch generates an FCS bit error rate alarm when the actual rate is close to the configured rate. Use the fcs-threshold interface configuration command to set the FCS error threshold.

BEFORE YOU BEGIN

Review the “FCS Error Hysteresis Threshold” section.

DETAILED STEPS

Use the no fcs-threshold interface configuration command to return to the default FCS threshold value.

EXAMPLE

This example shows how to set the FCS bit error rate for a port to 10-10:

Setting the FCS Error Hysteresis Threshold

The hysteresis setting prevents the toggle of an alarm when the actual bit error rate fluctuates near the configured rate. Use the alarm facility fcs-hysteresis global configuration command to set the FCS error hysteresis threshold.

NoteThe FCS hysteresis threshold is applied to all ports of a switch.

BEFORE YOU BEGIN

Review the “FCS Error Hysteresis Threshold” section.

DETAILED STEPS

Use the no alarm facility fcs-hysteresis command to set the FCS error hysteresis threshold to its default value.

NoteTheshow running config command displays any FCS error hysteresis that is not the default value.

EXAMPLE

This example shows how to set the FCS error hysteresis at 5 percent:

Configuring Alarm Profiles

• Creating or Modifying an Alarm Profile
• Attaching an Alarm Profile to a Specific Port

Creating or Modifying an Alarm Profile

You can use the alarm profile global configuration command to create an alarm profile or to modify an existing profile. When you create a new alarm profile, none of the alarms are enabled.

NoteThe only alarm enabled in thedefaultPort profile is the Port not operating alarm.

BEFORE YOU BEGIN

Before you use the notifies command to send alarm traps to an SNMP server, you must first set up the SNMP server by using the snmp-server enable traps alarms global configuration command. See the “Enabling SNMP Traps” section.

DETAILED STEPS

To delete an alarm profile, use the no alarm profile name global configuration command.

Table 5-3 lists the alarmList IDs and their corresponding alarm definitions. For a description of these alarms, see the “Port Status Monitoring Alarms” section.

EXAMPLE

This example creates or modifies the alarm profile fastE for the Fast Ethernet port with link-down ( alarmList ID 3) alarm enabled. The link-down alarm is connected to the major relay. This alarm also send notifications to an SNMP server and sends system messages to a syslog server.

Attaching an Alarm Profile to a Specific Port

In interface configuration mode, you can use the alarm-profile command to attach an alarm profile to a specific port.

BEFORE YOU BEGIN

Review the “Port Status Monitoring Alarms” section.

DETAILED STEPS

To detach an alarm profile from a specific port, use the no alarm-profile name interface configuration command.

EXAMPLE

This example attaches an alarm profile named fastE to a port:

This example detaches an alarm profile named fastE from a port:

Enabling SNMP Traps

Use the snmp-server enable traps alarms global configuration command to enable the switch to send alarm traps.

BEFORE YOU BEGIN

The snmp-server enable traps alarms command is used in conjunction with the snmp-server host command. Use the snmp-server host command to specify which host or hosts receive SNMP notifications. To send notifications, you must configure at least one snmp-server host command.

DETAILED STEPS

EXAMPLE