ISR1100 Dynamic Core Allocation - assign additional core to dataplane

[sdekooter]

In the video 'All you need to know about ISR Fixed Branch Platforms' there is a mention of 'dynamic core allocation' on the ISR1100 platform.

Starting from IOS-XE 17.6 this would appearantly allow the Service Core to be set up as a Dataplane Core, allowing more throughput then available by default. 

I am unable to find any documentation at all about this feature. On which ISR1100 models it is supported, how to set it up etc. Has anyone encountered this/tested it out or simple have a form of  documentation that you're able to share?

Source: https://salesconnect.cisco.com/#/content-detail/aeafa70b-1097-4f6f-9a23-7ed852ed7d5f

[sdekooter]

Updated slides from Cisco Live 2023 BRKARC-2881. Shows the command to change the service core into a dataplane core. Verbally it was mentioned that this is only supported on the -X models of 1100.

[Rich R]

I was looking for the same information!  It only seems to be documented (at all) for SDWAN, and with a spelling mistake (hyphen instead of space - reported)!
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/command/iosxe/qualified-cli-command-reference-guide/m-global-configuration-commands.html#Cisco_Command_Page.dita_d354ceec-d88e-461d-9803-1facbbff724a

I've tried it on C1113-8PLTEEA running 17.6.7 and it accepts the command without complaint or error but it makes no difference to the CPU core allocation at that point.  But in the log it says "Please reboot to activate this template".

And sure enough it has in fact worked after reload!  Changed from:

C1113-8P#show platform software cpu alloc
CPU alloc information:
Control plane cpu alloc: 0-1
Data plane cpu alloc: 2-3
Service plane cpu alloc: 0-1
Template used: default-service_plane_heavy

To:
C1113-8P#show platform software cpu alloc
CPU alloc information:
Control plane cpu alloc: 0
Data plane cpu alloc: 1-3
Service plane cpu alloc: 0
Template used: CLI-data_plane_heavy

It's a bit better documented for Catalyst 8300 series at:
https://www.cisco.com/c/en/us/td/docs/routers/cloud_edge/c8300/software_config/cat8300swcfg-xe-17-book/isr9000swcfg-xe-16-12-book_chapter_010.html#concept_0FBABD5F74924D36895FEF9912A283CF