Cisco Catalyst SD-WAN Application Intelligence Engine Flow Overview
The Cisco Catalyst SD-WAN Application Intelligence Engine (SAIE) flow provides the ability to look into the packet past the basic header information. The SAIE flow determines the contents of a particular packet, and then either records that information for statistical purposes or performs an action on the packet.
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In Cisco vManage Release 20.7.1 and earlier releases, the SAIE flow is called the deep packet inspection (DPI) flow. |
Benefits include increased visibility into the network traffic, which enables network operators to understand usage patterns and to correlate network performance information along with providing usage base billing or even acceptable usage monitoring. The SAIE flow can also reduce the overall costs on the network.
You can configure the SAIE flow using a centralized data policy. You define the applications of interest in a Cisco SD-WAN Manager policy list or with the policy lists app-list CLI command, and you call these lists in a policy data-policy command. You can control the path of the application traffic through the network by defining, in the action portion of the data policy, the local TLOC or the remote TLOC, or for strict control, you can define both.
The following list of protocols are not supported in SAIE flow:
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Open Shortest Path First (OSPF)
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Border Gateway Protocol (BGP)
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Internet Control Message Protocol (ICMP)
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Bidirectional Forwarding Detection (BFD)