Configuring IPFIX on the SRX Branch Series

Junos 20.1r1 was released recently, and with it came a rather exciting feature – the ability to configure IPFIX flow export on the SRX Branch series! This update also includes the ability to support flow record exports in chassis clusters as well. This is a great feature to support traffic analysis through a myriad of tools, and even support basic Denial of Service Attack detection. With the addition of IPFIX we can also generate flow data for IPv6 traffic which previously was not supported on the SRX. Without further ado, let’s configure IPFIX!

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Quick Tip: TOS Ping in JUNOS

I recently ran into an issue with Class of Service on an SRX device where DSCP markings on traffic we not being seen on an upstream router when going through an SRX. After running packet captures showing the DSCP-marked traffic leaving the SRX the customer still wanted to proceed with troubleshooting the SRX as being at fault.

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