D Commands
This chapter describes the system management commands that begin with D.
diagnostic bootup level
To configure the bootup diagnostic level to trigger diagnostics when the device boots, use the diagnostic bootup level command. To remove bootup diagnostic level configuration, use the no form of this command.
diagnostic bootup level { bypass | complete }
no diagnostic bootup level { bypass | complete }
Syntax Description
Specifies that all bootup diagnostics are performed. This is the default value. |
Command Default
Command Modes
Command History
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Examples
This example shows how to configure the bootup diagnostics level to trigger the complete diagnostics:
This example shows how to remove the bootup diagnostics level configuration:
Related Commands
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description (SPAN, ERSPAN)
To add a description to an Ethernet Switched Port Analyzer (SPAN) or an Encapsulated Remote Switched Port Analyzer (ERSPAN) session configuration, use the description command. To remove the description, use the no form of this command.
Syntax Description
String description of the SPAN session configuration. This string is limited to 80 characters. |
Command Default
Command Modes
SPAN session configuration mode
ERSPAN session configuration mode
Command History
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Usage Guidelines
Use the description command to provide a reminder in the configuration to describe what certain SPAN sessions are used for. The description appears in the output of the following commands such as show monitor session and show running-config monitor.
Examples
This example shows how to add a description for a SPAN session:
This example shows how to add a description for an ERSPAN session:
Related Commands
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Displays the running configuration information of a SPAN session. |
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destination (ERSPAN)
To configure an Encapsulated Remote Switched Port Analyzer (ERSPAN) destination IP address, use the destination command. To remove the destination ERSPAN IP address, use the no form of this command.
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
You can configure only one destination IP address for an ERSPAN source session.
Examples
This example shows how to configure an ERSPAN destination IP address:
Related Commands
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Displays the running configuration information of a SPAN session. |
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destination (SPAN session)
To configure a Switched Port Analyzer (SPAN) destination port, use the destination command. To remove the destination SPAN port, use the no form of this command.
destination interface { ethernet slot /[ QSFP-module/ ] port }
no source interface { ethernet slot /[ QSFP-module/ ] port }
Syntax Description
Command Default
Command Modes
SPAN session configuration mode
Command History
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Usage Guidelines
Each local SPAN session destination session must have a destination port (also called a monitoring port) that receives a copy of traffic from the source port.
The destination port can be any Ethernet physical port and must reside on the same switch as the source port (for a local SPAN session). The destination port cannot be a source port, a port channel, or SAN port channel group.
A destination port receives copies of sent and received traffic for all monitored source ports. If a destination port is oversubscribed, it can become congested. This congestion can affect traffic forwarding on one or more of the source ports.
Examples
This example shows how to configure an Ethernet interface SPAN destination port and activate the SPAN session:
Related Commands
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Displays the running configuration information of a SPAN session. |
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