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Home Documentation Junos OS How to Configure the NFX150 Configuring VNFs

How to Configure the NFX150

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How to Configure the NFX150
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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Configuring Analyzer VNF and Port-mirroring

date_range 20-Jan-21
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The Port-mirroring feature allows you to monitor network traffic. If the feature is enabled on a VNF interface, the OVS system bridge sends a copy of all network packets of that VNF interface to the analyzer VNF for analysis. You can use the port-mirroring or analyzer commands for analyzing the network traffic.

Note:

  • Port-mirroring is supported only on VNF interfaces that are connected to an OVS system bridge.

  • VNF interfaces must be configured before configuring port-mirroring options.

  • If the analyzer VNF is active after you configure, you must restart the VNF for changes to take effect.

  • You can configure up to four input ports and only one output port for an analyzer rule.

  • Output ports must be unique in all analyzer rules.

  • After changing the configuration of the input VNF interfaces, you must de-activate and activate the analyzer rules referencing to it along with the analyzer VNF restart.

To configure the analyzer VNF and enable port-mirroring:

  1. Configure the analyzer VNF:
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user@host#set virtual-network-functions analyzer-vnf-name image file-path 
user@host#set virtual-network-functions analyzer-vnf-name interfaces interface-name analyzer
  2. Enable port-mirroring of the network traffic in the input and output ports of the VNF interface and analyzer VNF:
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    user@host# set vmhost forwarding-options analyzer analyzer-instance-name input [ingress | egress] virtual-network-function vnf-name interface interface-name
user@host# set vmhost forwarding-options analyzer analyzer-rule-name output virtual-network-function analyzer-vnf-name interface interface-name
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