Equal-cost multipath. Traffic is spread over several equally good routes simultaneously; active-active Tier-0 gateways use it, together with BGP, across Edge nodes for north-south flows.
Also called Equal-Cost Multi-Path.
Read more: Broadcom TechDocs
In the Ultra Transcenders books
Each book explains ECMP in context, with comparison tables and the common traps.
Terms in this definition
- OVER
Gives a T-SQL window function its window: PARTITION BY, ORDER BY and, if wanted, a ROWS or RANGE frame. Rankings and running totals can then be worked out while every row is kept.
- Active-active
A VPN gateway set-up where traffic flows through both instances simultaneously, each having a separate tunnel and public IP. Servicing one instance therefore disrupts connections less than under default active-standby.
- BGP
Dynamic routing protocol used with both ExpressRoute and VPN connections. On ExpressRoute private peering it is the only way to exchange routes, including a 0.0.0.0/0 default route for forced tunnelling.