ION 10 Gigabit Ethernet Remotely Managed Media and Rate Converter NID
10GBase-X to 10GBase-X + 10/100/1000Base-T with Remote Layer 2 Management

  • C4221-4848-768x768
  • C4221-4848-front

The ION C4221 Network Interface Device (NID) is a remotely managed product that offers management via the ION Management Module for secure delivery of Ethernet services for business and mobile backhaul applications. The C4221 is a 10 Gig product with advanced features like remote management of the local and remote cards, VLAN, jumbo frame support, and bandwidth allocation of 10 Gig interfaces. The C4221 offers the additional functionality of a rate converter by also offering a 10/100/1000Base-T RJ-45 port allowing 10/100/1000 based devices to connect to 10 Gigabit Ethernet fiber backbone.


C4221-4848 Overview


  • Full non-blocking switching on all interfaces
  • (2) 10 Gig SFP+ ports supporting 100FX, 1000X, SGMII, and 10 Gig
  • SFP ports individually support same or different speeds simultaneously
  • (1) 10/100/1000Base-T port
  • Local and remote units can be fully managed by the ION platform
  • IPv4 IP TOS, DiffServ and IPv6 traffic class QoS classification via IONMM
  • Bandwidth Allocation, per port, from 1 Gig to 10 Gig in 1 Gig increments
  • Basic VLAN support
  • Jumbo frame support, up to 10,240 bytes
  • 16K maximum MAC Addresses
  • 8Mbit shared buffer memory
  • Remote firmware upgrades
  • Auto-MDI/MDIX
  • Auto-Negotiation
  • SFP+ DMI monitoring (no vendor specific information)
  • Pause
  • Can be used in the ION 19-Slot, 6-Slot, and 1-Slot chassis
  • Management provided by IONMM
    • DHCP client
    • Telnet
    • Command Line Interface (CLI)
    • Web management
    • SNMP v1, v2c, and v3
    • Management VLAN

C4221-4848 Tech Specs


    • IEEE 802.3
    • IEEE 802.3u
    • IEEE 802.3x
    • IEEE 802.3z
    • IEEE 802.3ab
    • IEEE 802.3ae


    • (1) Copper RJ-45 10/100/1000Base-T port
    • (2) Fiber 10 Gig SFP+ ports supporting 100FX, 1000X, SGMII, and 10 Gig USB port for basic setup

    Status LEDs

    • Power
      SFP+ Link/Activity for each port
    • TP – Left LED: Duplex, TP Link/Activity
    • TP – Right LED: TP Speed
    • USB – Activity


    • One jumper to load factory defaults


    • Width: 0.86″ [21.85 mm]
    • Depth: 6.5” [165 mm]
    • Height: 3.4” [86.36 mm]

    Power Input

    • ION Chassis Backplane

    Power Consumption


    • Operating: 0°C to 50°C
    • Storage: -40°C to 85°C
    • Humidity: 5% to 95% (non-condensing)
    • Altitude: 0 – 10,000 ft.


    • 1 lb. [0.45 kg]


    • Greater than 250,000 Hours (MIL-HDBK-217F)
    • Greater than 687,500 Hours (Bellcore)


    • Safety: CE Mark;
    • Emissions: EN55022 Class A;
    • Immunity: EN55024


    • 10 Years

C4221-4848 Resources

Application Spotlights
Press Releases
Case Studies

C4221-4848 Downloads

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.


Firmware Downloads

C4221-4848 Firmware and Release Notes

C4221-4848 Part Numbers

C4221-4848 C4221-4848

(2) 10GBase-X SFP+ slot (empty) + (1) 10/100/1000Base-T RJ-45 ports

Lantronix Part # Name Description Order Now

Compatible Accessories

Lantronix Part # Legacy Part # Name Description Order Now
SFP Modules SFP Modules See Relevant SFP Modules