ASA ECMP static routing
On a Cisco ASA, it is possible to configure up to eight equal cost static routes to a particular destination per interface. Equal-cost Multi-path routing (ECMP) is only supported for static routes on the same interface. ECMP is not supported across multiple interfaces.
Here is an example:
ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.1 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.2 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.3 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.4 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.5 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.6 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.7 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.8 ASA1(config)# route outside 10.10.10.0 255.255.255.0 192.168.1.9 ERROR: The maximum number of equal cost routes allowed is 8
Of course, the number of maximum ECMP routes can be different between platforms and/or software versions.
Links
https://forum.networklessons.com/t/cisco-asa-anyconnect-remote-access-vpn/833/113?u=lagapides