Cisco C1121-4P ISR 1100 4P Dual GE SFP RouterThe Cisco C1121-4P ISR 1100 4P Dual GE SFP Router is a high-performance enterprise router designed to provide secure, reliable, and scalable networking for branch offices, retail locations, and small to medium-sized businesses. Built on Cisco’s Integrated Services Router (ISR) 1100 Series platform, it combines advanced routing, security, VPN, and WAN services in a compact form factor.Featuring dual Gigabit Ethernet SFP WAN interfaces and four integrated Gigabit Ethernet LAN ports, the Cisco C1121-4P ISR 1100 4P Dual GE SFP Router delivers flexible connectivity options while supporting Cisco IOS XE software for enhanced network automation, visibility, and security. It is ideal for organizations requiring secure cloud access, SD-WAN readiness, and seamless branch connectivity.Key FeaturesDual Gigabit Ethernet SFP WAN interfacesFour integrated Gigabit Ethernet LAN portsCisco IOS XE operating systemAdvanced routing and switching capabilitiesEnterprise-grade security and VPN servicesSD-WAN ready architectureSupport for QoS and traffic prioritizationUSB 3.0 connectivity for additional functionalityCompact, fanless design for branch deploymentsCentralized management and monitoring supportTechnical SpecificationsSpecificationDetailsProduct ModelCisco C1121-4PSeriesCisco ISR 1100 SeriesWAN Interfaces2 × Gigabit Ethernet SFPLAN Ports4 × Gigabit EthernetDRAM Memory4 GBFlash Memory4 GBConsole PortsRJ45 Console, Micro USB ConsoleUSB PortUSB 3.0Operating SystemCisco IOS XESecurity FeaturesIPSec VPN, Firewall, AAA, 802.1X AuthenticationRouting ProtocolsStatic, OSPF, EIGRP, BGP, RIPQoS SupportYesSD-WAN ReadyYesPower Input100–240 VAC, 50–60 HzPoE SupportOptional PoE/PoE AdapterManagementCLI, Web UI, Cisco Management ToolsDeploymentBranch Offices, Enterprise Networks, Retail SitesBenefitsSecure branch connectivity with integrated VPN capabilitiesReliable WAN access through dual SFP interfacesSimplified network management using Cisco IOS XESupports cloud applications and SD-WAN deploymentsEnhanced network visibility and security controlsFlexible deployment for growing business environmentsEnterprise-grade performance in a compact footprintQuick LinksCISCO 1941 /K9 – Cisco ISR G2 1900 Series RouterCisco 2911 Integrated Services RouterCisco C891F-K9 a perfect choice for businesses KenyaCisco Integrated Service Router 4331/K9Cisco 4221/K9 Integrated Service Router