I have an Internet Router with 4 seriel Interface, each of them connected to an E1. The first 2 ports have been Multilinked and is working fine.
However when I tried to Multilink the other 2 lines as a second Multilink, I could not do it. The ISP says they gave the 3rd and 4th line on 2 different cards at their end. Is it necessary for the 2 ports to be multilinked to be on the same card or is it enough that they be in the same router.