How to ECMP (Load Balancing) with two ISP providers

IlyaTaskaev — Fri, 21 Feb 2020 17:30:19 GMT

Hi, I tried to configure ECMP with traffic Zones on my ASA 5516-x through FMC's FlexConfig, ~~and it seems not working~~.

I finally did it:

At first, I have created a Flex object (In FMC: Objects - Object Management - FlexConfig - FlexConfig Object): OutsideTrafficZoneCreation (Deployment: Once, Type: Prepend):

zone Outside_ECMP ecmp

Secondly, InterfaceTrafficZoneConfig (Deployment: Everytime, Type: Append):

interface GigabitEthernet1/1
zone-member Outside_ECMP

interface GigabitEthernet1/2
zone-member Outside_ECMP

GigabitEthernet1/1 and GigabitEthernet1/2 there are both outside interfaces

Third, I went to Devices - FlexConfig - Create a new policy for my device and added two previously created FlexConfigs to it. Deploy configuration.

Next, I have changed metrics to 1 for two default routes attached to these interfaces. Deploy configuration again.

Also, I have created two SLA timers (Objects - Object Management - SLA timer) and attached them to these routes. I don't know if it important or not, but it helps me keep both routes in running-configuration (without second SLA timer only one route appears)

topic How to ECMP (Load Balancing) with two ISP providers in Network Security

How to ECMP (Load Balancing) with two ISP providers