Cisco Catalyst SD-WAN AppQoE Configuration Guide, Release 26.x and Later

Platforms that support TCP optimization

Updated: March 10, 2026

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Lists the platforms and software releases that support TCP optimization, with deployment and resource details.

Objective

This reference lists the platforms and software releases that support TCP optimization and the applicable deployment and resource requirements.

Integrated Service Nodes


Devices	Release
Cisco 4331 Integrated Services Router (ISR 4331) Cisco 4431 Integrated Services Router (ISR 4431) Cisco 4321 Integrated Services Router (ISR 4321) Cisco 4351 Integrated Services Router (ISR 4351) Cisco 4451 Integrated Services Router (ISR 4451) Cisco 4461 Integrated Services Router (ISR 4461) Cisco CSR 1000v Cloud Services Router (CSRv)	Cisco IOS XE Release 17.2.1r and later.
Cisco 4221 Integrated Services Router (ISR4221) Cisco Integrated Services Virtual Router (ISRv) Cisco 1000 Series Integrated Services Routers Note The support is only applicable on Cisco 1000 Series Integrated Services Routers that have a RAM of 8 GB or more. See Cisco 1000 Series Integrated Services Routers Data Sheet for platform specifications.	Cisco IOS XE Release 17.3.1a and later
Cisco ISR 1100X Series Integrated Services Routers Cisco Catalyst 8000V	Cisco IOS XE Release 17.4.1a
Cisco Catalyst 8300 Series Edge Platforms: C8300-1N1S-6T C8300-1N1S-4T2X C8300-2N2S-6T C8300-2N2S-4T2X	Cisco IOS XE Release 17.5.1a and later
Cisco Catalyst 8200 Series Edge Platforms: C8200-1N-4T	Cisco IOS XE Release 17.6.1a and later
Cisco 8100 Series Secure Routers: C8161-G2 C8151-G2 Only the above Cisco 8100 Series Secure Router variants support 8GB DRAM, which allows them to support TCP Optimization. See Cisco 8100 Series Secure Routers Data Sheet for platform specifications.	Cisco IOS XE Release 17.18.1a and later
Cisco 8200 Series Secure Routers: C8231-E-G2 C8235-E-G2	Cisco IOS XE Release 17.18.1a and later
Cisco 8200 Series Secure Routers: C8231-G2 C8235-G2 C8231 and C8235 do not support SSL proxy.	Cisco IOS XE Release 17.18.1a and later
Cisco 8300 Series Secure Routers: C8375-E-G2	Cisco IOS XE Release 17.15.3a and later releases of Cisco IOS XE Catalyst SD-WAN Release 17.15.x Cisco IOS XE Catalyst SD-WAN Release 17.18.1a and later
Cisco 8300 Series Secure Routers: C8351-G2 C8355-G2	Cisco IOS XE Release 17.18.1a and later
Cisco 8400 Series Secure Routers: C8475-G2 C8455-G2	Cisco IOS XE Release 17.15.3 and later
Cisco 8100 Series Secure Routers: C8131-G2 C8151-CVAI-G2 C8151-CVAP-G2 Only the above Cisco 8100 Series Secure Router variants support 8GB DRAM, which allows them to support TCP Optimization. See Cisco 8100 Series Secure Routers Data Sheet for platform specifications.	Cisco IOS XE Catalyst SD-WAN Release 26.1.1

Service Controllers


Supported Devices	Release
Cisco ASR 1000 Series Aggregation Services Routers ASR1001X ASR1002X ASR1001-HX ASR1002-HX Cisco Catalyst 8500 Series Edge Platforms: C8500-12X4QC C8500-12X Cisco Catalyst 8000V Note If you configure Cisco Catalyst 8000V as a service controller, you cannot use the same instance as a service node.	Cisco IOS XE SD-WAN Release 17.4.1a and later
Cisco Catalyst 8500 Series Edge Platforms C8500L-8S4X Cisco ASR 1000 Series Aggregation Services Routers ASR1006-X	Cisco IOS XE SD-WAN Release 17.5.1a and later
Cisco Catalyst 8500 Series Edge Platforms C8500-20X6C	Cisco IOS XE SD-WAN Release 17.10.1a and later
Cisco 8400 Series Secure Routers: C8475-G2 C8455-G2	Cisco IOS XE SD-WAN Release 17.15.3a and later releases of Cisco IOS XE Catalyst SD-WAN Release 17.15.x Cisco IOS XE Catalyst SD-WAN Release 17.18.1a and later
Cisco 8500 Series Secure Routers: C8570-G2 C8550-G2	Cisco IOS XE SD-WAN Release 17.15.4a Cisco IOS XE Catalyst SD-WAN Release 17.18.1a and later

External Service Nodes


Devices	Release
Cisco Catalyst 8000V	Cisco IOS XE SD-WAN Release 17.4.1a and later
C8500L-8S4X C8500L supports SSL Proxy function when used as external service node for AppQoE.	Cisco IOS XE SD-WAN Release 17.5.1a and later
Cisco 8400 Series Secure Routers: C8475-G2 C8455-G2	Cisco IOS XE SD-WAN Release 17.15.3a and later releases of Cisco IOS XE Catalyst SD-WAN Release 17.15.x Cisco IOS XE Catalyst SD-WAN Release 17.18.1a

TCP optimization is not supported on DNS traffic and C8200L platforms.

Disk Provisioning Recommendation for Cisco Catalyst 8000V Deployment

While deploying Cisco Catalyst 8000V instances, choose Thick Provision Eager Zeroed as the disk format.

For information on deploying Cisco Catalyst 8000V instances on supported hypervisors, see:

ESXi
KVM

Minimum Resource Requirements

The platforms must have a minimum of 16 GB of DRAM.
The Cisco CSR1000V and Cisco Catalyst 8000V platforms must have eight data cores.

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