combine two e1 using mikrotik

i have two 3 customers connected on e1.one customer is 1M other is 512k and 512k. these customer are connected via a wireless link.now the problem here is all the customers wanted to upgrade their link. so i took another e1 to the location and connected both e1’s to a switch to combine. but it failed.both e1’s work fine individually . is there a way to route two some customer to one e1 and other to other e1

What is an e1?

What is an e1?

E1 is European standard just like T1 but carry 2Mbit

is there a way to route two some customer to one e1 and other to other e1


/ ip firewall mangle
add chain=prerouting src-address=YourCustomersIPFrom1STE1 action=mark-routing new-routing-mark=1ST
add chain=prerouting src-address=YourCustomersIPFrom2NDE1 action=mark-routing new-routing-mark=2ND

/ ip route 
add dst-address=0.0.0.0/0 gateway=YourGatwayIPFrom1STE1 routing-mark=1ST
add dst-address=0.0.0.0/0 gateway=YourGatwayIPFrom2NDE1 routing-mark=2ND

by the way ROS is supporting interface aggregation (802.3ab) and its standard and most of ISPs support this protocol, all you need is two E1 to Ethernet converters and two Ethernet port in your Mikrotik.