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Cisco C8355-G2 Secure Router

A fixed, fanless 1RU secure router built for large branch deployments where silence matters. Powered by Cisco's secure networking processor, the C8355-G2 delivers 38 Gbps forwarding, 20 Gbps IPsec, and 3.9 Gbps threat protection with 10 built-in ports and hardware-accelerated security.

Cisco C8355-G2 Secure Router
Fixed 1RU 38 Gbps Forwarding 20 Gbps IPsec PQC Ready Fanless 9.25 lbs

Product Overview

Secure Networking Processor

Built on an all-new secure networking processor delivering 38 Gbps forwarding and 20 Gbps IPsec throughput with hardware-accelerated security.

Fanless Design

Completely fanless operation makes the C8355-G2 ideal for noise-sensitive large branch environments such as open offices and retail locations.

Platform-Level Security

Hardware-native NGFW, IPS, URL filtering, and AMP deliver 3.9 Gbps threat protection. Post-quantum cryptography readiness safeguards against future threats.

Rich Port Density

10 built-in ports: 4x 10G SFP/SFP+, 4x 5G mGig RJ-45, and 2x 1G RJ-45 provide high-throughput WAN, flex, and LAN connectivity without modules.

AI/ML Offload

Offload AI and ML tasks to the secure networking processor for faster response times and intelligent network operations at the branch edge.

Flexible Management

Manage via IOS XE CLI, Catalyst SD-WAN Manager, or infrastructure-as-code. Unified licensing across all management modes.

Features and Benefits

Silent, secure routing for the large branch.

The C8355-G2 is a fixed, fanless platform engineered for large branch locations requiring high-throughput secure connectivity and advanced threat protection in noise-sensitive environments.

38 Gbps Forwarding

Hardware-accelerated forwarding at 38 Gbps (512B) supports thousands of users and bandwidth-intensive applications at the branch.

Hardware-Accelerated NGFW

Integrated next-generation firewall with IPS, URL filtering, and AMP delivers 3.9 Gbps threat protection without external appliances.

Fanless Operation

Zero-fan design eliminates acoustic noise, making it ideal for open offices, retail floors, and other noise-sensitive branch locations.

PQC Readiness

Post-quantum cryptography algorithms built into hardware protect encrypted traffic against future quantum computing threats.

AI/ML Offload

On-box AI and ML processing accelerates network analytics, threat detection, and intelligent path selection at the edge.

10 Built-in Ports

4x 10G SFP/SFP+, 4x 5G mGig, and 2x 1G RJ-45 provide rich connectivity without requiring expansion modules.

Feature & Benefit Details

Feature
Benefit
Secure Networking Processor
Consolidated SoC architecture delivers 38 Gbps forwarding and 20 Gbps IPsec with hardware-accelerated security in a single chip.
8.7 Gbps SD-WAN
Full SD-WAN feature set (IPsec + QoS + DPI + NetFlow) at 8.7 Gbps ensures optimal application performance across the WAN.
Post-Quantum Cryptography
Hardware-ready PQC algorithms protect against harvest-now, decrypt-later quantum computing threats.
IOS XE / Catalyst SD-WAN
Unified software platform supports CLI, SD-WAN Manager, and infrastructure-as-code management modes.
Fanless Thermal Design
Zero-fan cooling at only 45W typical consumption enables deployment in noise-sensitive environments without compromise.
Integrated NGFW
On-box NAT, IPS, URL filtering, and AMP eliminate the need for separate security appliances at the branch.

Specifications

Interfaces & Slots

WAN ports2x 10G SFP/SFP+, 2x 5G mGig RJ-45 (2x UPoE+)
Flex ports2x 5G mGig RJ-45 (2x UPoE+), 2x 1G RJ-45
LAN ports2x 10G SFP/SFP+
Cellular slot1x PIM
Management1x RJ-45 OOB, 1x RJ-45 / Micro-USB console

Performance

Forwarding (512B)38 Gbps
IPsec (512B)20 Gbps
SD-WAN (512B)8.7 Gbps
Threat protection (EMIX)3.9 Gbps

Scale

IPv4/IPv6 routes2M
IPsec tunnels3,500
NAT sessions1.5M
VRFs4,000
IPv4 ACEs20K

Memory & Storage

DRAM16 GB (fixed)
Storage options16 GB / 32 GB / 600 GB / 2 TB

Physical

Dimensions (H x W x D)1.73 x 17.5 x 11.49 in
Rack units1RU
Weight9.25 lbs
CoolingFanless

Power & Environmental

Default PSU110W AC (external adapter)
Upgrade options230W AC + PoE (120W budget)
Typical consumption45W
Input voltageAC: 85-264V
Operating temp0 to 40°C (sea level)

Software Requirements

IOS XE 17.18.1

Minimum device OS release

SD-WAN 20.18.1

Minimum Catalyst SD-WAN Manager release

Documentation

Data Sheet

Cisco 8300 Series Secure Routers Data Sheet. Full specifications, models, modules, management, and ordering information.

Download PDF ›

Ready to deploy the C8355-G2?

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Cisco C8355-G2 Secure Router