E Commands
This chapter describes the Cisco NX-OS Ethernet and virtual Ethernet commands that begin with E.
encapsulation dot1Q
To enable IEEE 802.1Q encapsulation of traffic on a specified subinterface, use the encapsulation dot1q command. To disable encapsulation, use the no form of this command.
no encapsulation dot1Q vlan-id
Syntax Description
VLAN to set when the interface is in access mode; valid values are from 1 to 4093, except for the VLANs reserved for internal switch use. |
Command Default
Command Modes
Subinterface configuration mode
Command History
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Usage Guidelines
IEEE 802.1Q encapsulation is configurable on Ethernet and EtherChannel interfaces. IEEE 802.1Q is a standard protocol for interconnecting multiple switches and routers and for defining VLAN topologies.
Use the encapsulation dot1q command in subinterface range configuration mode to apply a VLAN ID to the subinterface.
Note This command is not applicable to loopback interfaces.
Examples
This example shows how to enable dot1Q encapsulation on a subinterface for VLAN 30:
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errdisable detect cause
To enable error-disable (err-disabled) detection in an application, use the errdisable detect cause command. To disable error disable detection, use the no form of this command.
errdisable detect cause { all | link-flap | loopback }
no errdisable detect cause { all | link-flap | loopback }
Syntax Description
Command Default
Command Modes
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Usage Guidelines
When error disable detection is enabled and a cause is detected on an interface, the interface is placed in an err-disabled state, which is an operational state that is similar to the link-down state.
Examples
This example shows how to enable the err-disabled detection on linkstate-flapping:
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errdisable recovery cause
To configure the application to bring the interface out of the error-disabled (err-disabled) state and retry coming up, use the errdisable recovery cause command. To revert to the defaults, use the no form of this command.
errdisable recovery cause { all | bpduguard | failed-port-state | link-flap-recovery | pause-rate-limit | udld }
no errdisable recovery cause { all | bpduguard | failed-port-state | link-flap-recovery | pause-rate-limit | udld }
Syntax Description
Command Default
Command Modes
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Usage Guidelines
When error disable recovery is enabled, the interface automatically recovers from the err-disabled state, and the device retries bringing the interface up.
Examples
This example shows how to enable error disable recovery from linkstate-flapping:
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errdisable recovery interval
To configure the recovery time interval to bring the interface out of the error-disabled (err-disabled) state, use the errdisable recovery interval command. To revert to the defaults, use the no form of this command.
errdisable recovery interval time
no errdisable recovery interval
Syntax Description
Error disable recovery time interval. The range is from 30 to 65535 seconds. |
Command Default
Command Modes
Command History
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Usage Guidelines
When error disable recovery is enabled, the interface automatically recovers from the err-disabled state, and the device retries bringing the interface up.
Examples
This example shows how to enable error disable recovery time interval to 100 seconds:
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erspan-id
To configure the flow ID for an Encapsulated Remote Switched Port Analyzer (ERSPAN)) session, use the erspan-id command. To remove the flow ID, use the no form of this command.
Syntax Description
Command Default
Command Modes
ERSPAN session configuration mode
Command History
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Usage Guidelines
Examples
This example shows how to configure the flow ID for an ERSPAN session:
Related Commands
extension-key
To configure the extension key to be used to connect to the vCenter Server, use the extension-key command.
Syntax Description
Extension ID. The ID can be a maximum of 80 alphanumeric characters. |
Command Default
Command Modes
SVS connection configuration mode
Command History
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Usage Guidelines
Examples
This example shows how to configure the extension key for a vCenter Server:
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