Cisco C1101-4P — ISR 1100 Series 4-Port Integrated Services Router
What it is
C1101-4P is a Cisco ISR 1100 Series branch/edge router designed for small offices, retail, and distributed enterprise locations.
It delivers 4 × Gigabit Ethernet ports, integrated routing, security, and WAN services in a compact hardware platform — ideal for secure Internet access, VPN, SD-WAN, and unified communications at the edge.
Why buyers pick C1101-4P (plain English)
Secure and simple branch edge
Provides enterprise-grade routing and security without the cost and complexity of larger chassis-based routers.
All-in-one WAN/LAN connectivity
Four Gigabit Ethernet interfaces support flexible assignment as LAN and WAN links for internet, MPLS, or cellular backhaul (with optional modules), simplifying branch designs.
Integrated security
Comes with a stateful firewall, NAT, QoS, and IPsec VPN — protecting branch networks and enabling secure site-to-site or remote access.
Cisco IOS XE platform
Runs Cisco’s modern IOS XE OS for consistent CLI, automation, programmability, and feature support across the Cisco ISR portfolio.
SD-WAN ready
Supports Cisco SD-WAN software (with appropriate licences), giving centralized policies, analytics, and path control across WAN links.
60-second spec box (C1101-4P)
Device type
Branch/edge integrated services router
WAN/LAN ports
4 × 10/100/1000BASE-T
Routing OS
Cisco IOS XE
Security
Stateful firewall, NAT, IPsec VPN, QoS
SD-WAN
Supported with licences
Form factor
Compact desktop/rack convertible
Use case
Small branch WAN edge, secure internet breakouts, VPN/SD-WAN edge
Where it fits (and when to choose something else)
Perfect for:
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Small office/branch edge routing and security
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Internet breakout with secure VPN to head office
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SD-WAN deployments with centralized policies
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Simple LAN/WAN convergence without extra hardware
Choose something else if:
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You need very high throughput → ISR 4000/ASR Series
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You need high LAN port density or PoE → switch + router mix
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You want integrated Wi-Fi → integrated Wi-Fi edge devices
TL;DR
C1101-4P is Cisco’s ISR 1100 Series compact 4-port router:
a secure and flexible branch edge platform for routing, VPN, and SD-WAN in small enterprise and remote locations.
