Limit of 32 interfaces for NBAR protocol-discovery

[BENJAMIN TAN]

Has anyone else hit the 32 interface nbar limit on an ASR?

Our ASR1002 ESP5 is now grumbling:

%NBAR-4-STILE_MAX_PD_INTF: NBAR protocol-discovery is enabled on maximum number of interfaces (32) supported by this platform

The questions which come to mind are:

Where is this documented??!

Is this expected to increase in future software revisions? (or is it a h/w limitation?)

Is it the same limit regardless of ESP or will I get more (how many more?) if it is an e.g. ESP20?

[BENJAMIN TAN]

*sigh* Cisco "fine print"

http://www.cisco.com/en/US/partner/docs/ios/ios_xe/qos/configuration/guide/nbar_protocl_discvry_xe.html#wp1027195

To enable Protocol Discovery on an interface, perform the following steps. In Cisco IOS XE Release 2.4 and earlier releases, there is no limit on the number of interfaces on which protocol discovery can be enabled. In Cisco IOS XE Release 2.5 and Cisco IOS XE Release 2.6, you can enable protocol discovery on 256 interfaces. In Cisco IOS XE Release 2.7, you can enable protocol discovery on 32 interfaces.

Maybe it'll go down to 16 in the next release!