Outlines restrictions for policy compliance check when using applications in Protocol Packs on Cisco IOS XE devices, and directs you to the NBAR2 Protocol Pack Library for release-specific updates and compatibility details.
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See the NBAR2 Protocol Pack Library for information about which Protocol Pack updates are available for each Cisco IOS XE release.
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Devices using a Cisco IOS XE release earlier than Cisco IOS XE Catalyst SD-WAN Release 17.14.1a support only policies that use applications that were available in the original built-in Protocol Pack release of the Cisco IOS XE release. They do not support policies that use applications added in subsequent Protocol Pack releases.
For example, if the original built-in Protocol Pack release of the Cisco IOS XE release did not include application x, and a policy uses application x, then a router using a release earlier than Cisco IOS XE Catalyst SD-WAN Release 17.14.1a cannot support that policy. This is true even if you later upgrade the router to use a Protocol Pack that includes application x.