Lumen help

Readiness support: Prepare to activate your services in North America

Basic steps to activation success

Technical support contacts

Basic troubleshooting tips

IP/data service troubleshooting tips

Ethernet service performance

Traffic shaping

Customer provided equipment (CPE) / cabling

Router configurations

Ethernet configuration guidelines

The following reference table provides basic Ethernet interface connectivity standards, cabling and compatibility. Customer edge (CE) device configuration guidance is provided for those Ethernet service speeds most commonly associated with performance issues.

Interface Media type handoff Fiber mode Bandwidth usage limit Distance limit
10/100 Base T Copper N/A 100 Mbps 100m
100 Base T Copper N/A 1 Gbps 100m
100 Base FX Fiber Multi-mode 100 Mbps 500m–2km
1000 Base SX Fiber Multi-mode 1 Gbps 220m–550m
1000 Base LX/LH Fiber Single-mode 1 Gbps 10km
1000 Base ZX Fiber Single-mode 1 Gbps 70km
10000 Base SR Fiber Multi-mode 10 Gbps 220m–550m
10000 Base IR/LR Fiber Single-mode 10 Gbps 10km/20km
40G Base LR Fiber Single-mode 40 Gbps 20km
4100G LR4 Fiber Single-mode 100 Gbps 10km

T1 crossover cables (Voice/TDM services)

PRI (T1/E1) crossover/loopback cable PRI (T1/E1) crossover/loopback cable

Ethernet crossover cables (Switched services)

Additional technical support information