Configure Path Monitoring Settings

The PBR policy relies on flexible metrics, such as round trip time (RTT), jitter, mean opinion score (MOS), and packet loss of the interfaces to identify the best routing path for its traffic. Path monitoring collects these metrics on the specified interfaces. On the Interfaces page, you can configure interfaces with settings for path monitoring to send the ICMP probes or HTTP pings for metrics collection.

Procedure

Step 1

Select Devices > Device Management and click Edit (edit icon) for your threat defense device. The Interfaces page is selected by default.

Step 2

Click Edit (edit icon) for the interface you want to edit.

Step 3

Click the Path Monitoring tab.

Step 4

To configure ICMP based monitoring of the interface, click the Enable IP based Monitoring check box.

Step 5

From the Monitoring Type drop-down list, select the relevant option:

  • Auto—Sends ICMP probes to the IPv4 default gateway of the interface. If the IPv4 gateway does not exist, path monitoring sends the probes to the IPv6 default gateway of the interface.

  • Peer IPv4—Sends ICMP probes to the specified peer IPv4 address (next-hop IP) for monitoring. If you select this option, enter the IPv4 address in the Peer IP To Monitor field.

  • Peer IPv6—Sends ICMP probes to the specified peer IPv6 address (next-hop IP) for monitoring. If you select this option, enter the IPv6 address in the Peer IP To Monitor field.

  • Auto IPv4—Sends ICMP probes to the default IPv4 gateway of the interface.

  • Auto IPv6—Send ICMP probes to the default IPv6 gateway of the interface.

Note

  • The Auto options are not available for VTI interfaces. You must specify the peer address.

  • Only one next-hop is monitored to a destination. That is, you cannot specify more than one peer address to monitor for an interface.

Step 6

By default, the Enable HTTP based Application Monitoring check box is selected. All applications selected for path monitoring in the match ACL of the PBR policy are listed, provided this interface is configured as the egress interface in the policy. To disable the HTTP-based monitoring of the interface, clear the check box.

Step 7

Click Ok, and to save the settings, click Save.