MikroTik LOAD BALANCING ECMP CALCULATOR

Load Balancing ECMP Calculator

LB ECMP Generator

Configuration

RouterOS Version

Number of WANs (ISPs)

WAN Bandwidths (Mbps)

WAN-1

WAN-2

Technical Logic

ECMP (Equal Cost Multi-Path) Load Balancing distributes traffic proportionally by creating multiple route paths for each connection based on its calculated weight. This ensures optimal utilization of multiple ISP lines with mismatched bandwidths.

Bandwidth Distribution

NORMALIZED RATIO

Identity	Capacity	Weight Ratio	Numerator
WAN-1	10 Mbps	10 / 10	1
WAN-2	10 Mbps	10 / 10	1
Total Numerator			2

ECMP Path Detail

Route Entry	Load Allocation	Target Gateway
Path #1 (WAN-1)	10 Mbps	WAN-1_GATEWAY
Path #2 (WAN-2)	10 Mbps	WAN-2_GATEWAY

Possible Speed Balance20 Mbps (2 paths)

mikrotik_ecmp_config.rsc

# Weighted ECMP Configuration for v7.xx
# Replace WAN-X_GATEWAY with actual IP addresses
# Generated at 1/26/2026

/ip route add distance=1 check-gateway=ping gateway=WAN-1_GATEWAY comment="Weighted_ECMP_for_WAN-1"
/ip route add distance=1 check-gateway=ping gateway=WAN-2_GATEWAY comment="Weighted_ECMP_for_WAN-2"