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This chapter describes the Cisco Nexus 1000V commands that begin with the letter F.
To enable the Dynamic Host Configuration Protocol (DHCP) feature globally, use the feature dhcp command. To disable DHCP, use the no form of this command.
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This example shows how to enable DHCP globally:
n1000v(
config)#
feature dhcp
n1000v(
config)#
This example shows how to disable DHCP globally:
n1000v(
config)#
no feature dhcp
n1000v(
config)#
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Displays the features available, such as DHCP, and whether they are enabled. |
To enable the HTTP server, use the feature http-server command. To disable the HTTP server, use the no form of this command.
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This example shows how to enable the HTTP server:
n1000v#
configure terminal
n1000v(
config)#
feature http-server
This example shows how to disable the HTTP server:
n1000v#
configure terminal
n1000v(
config)#
no feature http-server
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Displays the features available, such as LACP, and whether they are enabled. |
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To enable the Link Aggregation Control Protocol (LACP) support for port channels, use the feature lacp command. To disable it, use the no form of this command.
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LACP bundles a number of physical ports together to form a single logical channel.
You cannot configure LACP for a port channel without first enabling LACP using the command, feature lacp.
This example shows how to turn on LACP for port channels:
n1000v#
configure terminal
n1000v(
config)#
feature lacp
This example shows how to turn off LACP for port channels:
n1000v(
config)#
no feature lacp
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Displays the features available and whether they are enabled. |
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To enable the NetFlow, use the feature netflow command. To disable the feature, use the no form of this command.
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This example shows how to enable NetFlow:
n1000v#
configure terminal
n1000v(
config)#
feature netflow
This example shows how to disable NetFlow:
n1000v#
configure terminal
n1000v(
config)#
no feature netflow
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To enable the network segmentation manager (NSM) feature, use the feature network-segmentation-manager command. To disable the feature, use the no form of this command.
feature network-segmentation-manager
no feature network-segmentation-manager
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This example shows how to enable the NSM feature:
This example shows how to disable the NSM feature:
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To enable the segmentation feature, use the feature segmentation command. To disable the segmentation feature, use the no form of this command.
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This example shows how to enable segmentation:
n1000v#
configure terminal
n1000v(
config)#
feature segmentation
This example shows how to disable segmentation:
n1000v#
configure terminal
n1000v(
config)#
no feature segmentation
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Displays the available features and whether the feature is enabled or disabled. |
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To enable the secure shell (SSH) server, use the feature ssh command. To disable the server, use the no form of this command.
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Before enabling SSH, you must configure IP on a Layer 3 interface, out-of-band on the mgmt 0 interface.
This example shows how to enable the SSH server:
n1000v#
configure terminal
n1000v(
config)#
feature ssh
This example shows how to disable the SSH server:
n1000v#
configure terminal
n1000v(
config)#
no feature ssh
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Displays the features available, such as the SSH server, and whether they are enabled. |
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To enable the Terminal Access Controller Access Control System Plus (TACACS+) server, use the feature tacacs+ command. To disable the server, use the no form of this command.
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This example shows how to enable TACACS+:
n1000v#
configure terminal
n1000v(
config)#
feature tacacs+
This example shows how to disable TACACS+:
n1000v#
configure terminal
n1000v(
config)#
no feature tacacs+
To enable the Telnet server, use the feature telnet command. To disable the Telnet server, use the no form of this command.
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This example shows how to enable the Telnet server:
n1000v#
configure terminal
n1000v(
config)#
feature telnet
This example shows how to disable the Telnet server:
n1000v#
configure terminal
n1000v(
config)#
no feature telnet
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Displays the features available, such as the Telnet server, and whether they are enabled. |
To find filenames beginning with a character string, use the find command.
First part or all of a filename. The filename prefix is case-sensitive and can be up to 28 characters. |
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The find command searches all subdirectories under the current working directory. You can use the cd and pwd commands to navigate to the starting directory.
This example shows how to display filenames beginning with ospf:
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To create or modify a Flexible NetFlow flow exporter that defines where and how Flow Records are exported to the NetFlow Collector Server, use the flow exporter command. To remove a flow exporter, use the no form of this command.
no flow exporter exporter-name
Flow exporters are not present in the configuration until you create them.
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This example shows how to create and configure FLOW-EXPORTER-1:
This example shows how to remove FLOW-EXPORTER-1:
To create a Flexible NetFlow flow monitor, or to modify an existing Flexible NetFlow flow monitor, and enter Flexible NetFlow flow monitor configuration mode, use the flow monitor command. To remove a Flexible NetFlow flow monitor, use the no form of this command.
Flow monitor name that is created or modified. The range is from 1 to 63, case-sensitive, alphanumeric characters. |
Flow monitors are not present in the configuration until you create them.
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Flow monitors are the Flexible NetFlow component that is applied to interfaces to perform network traffic monitoring. Flow monitors consist of a record that you add to the flow monitor after you create the flow monitor and a cache that is automatically created at the time the flow monitor is applied to the first interface. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record that is configured for the flow monitor and stored in the flow monitor cache.
Once you enter the flow monitor configuration mode, the prompt changes to the following:
Within the flow monitor configuration mode, the following keywords and arguments are available to configure the flow monitor:
– record-name —Name of a record.
– netflow ipv4 collection-type — Specifies the traditional IPv4 NetFlow collection schemes as follows:
original-input —Specifies the traditional IPv4 input NetFlow.
original-output —Specifies the traditional IPv4 output NetFlow
protocol-port —Specifies the protocol and ports aggregation scheme.
– netflow-original — Specifies the traditional IPv4 input NetFlow with origin autonomous systems.
– active —Specifies an active or long timeout in the range of 60 to 4092 seconds.
– inactive —Specifies an inactive or normal timeout in the range of 15 to 4092 seconds.
The netflow-original and original-input keywords are the same and are equivalent to the following commands:
The original-output keywords are the same as original-input keywords except for the following:
This examples shows how to create and configure a flow monitor named FLOW-MONITOR-1:
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To create a Flexible NetFlow flow record, or to modify an existing Flexible NetFlow flow record, and enter Flexible NetFlow flow record configuration mode, use the flow record command. To remove a Flexible NetFlow flow record, use the no form of this command.
Flow record name that is created or modified. The range is from 1 to 63, case-sensitive, alphanumeric characters. |
Flow records are not present in the configuration until you create them.
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Flexible NetFlow uses key and nonkey fields just as original NetFlow does to create and populate flows in a cache. In Flexible NetFlow, a combination of key and nonkey fields is called a record. Original NetFlow and Flexible NetFlow both use the values in key fields in IP datagrams, such as the IP source or destination address and the source or destination transport protocol port, as the criteria for determining when a new flow must be created in the cache while network traffic is being monitored. A flow is defined as a stream of packets between a given source and a given destination. New flows are created whenever NetFlow analyzes a packet that has a unique value in one of the key fields.
Once you enter the flow record configuration mode, the prompt changes to the following:
Within the flow record configuration mode, the following keywords and arguments are available to configure the flow record:
Cisco NX-OS enables the following match fields by default when you create a flow record:
This example shows how to create a flow record named FLOW-RECORD-1 and enter Flexible NetFlow flow record configuration mode:
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