I have recently noticed that the LDP filters are not keeping their same configuration when upgrading from ROS6 to ROS7. I’m in the process of upgrading many routers from ROS 6.49.9 to ROS 7.11.2 and I’ve noticed that the LDP filters are getting messed up during the upgrading the process. While on ROS6 all of our filter rules only have a prefix defined. We do not fill out the neighbor field as we do not want to only allow neighbors from specific IPs. After upgrading to ROS7, the neighbors fields for both the accept and advertise filters are set to 0.0.0.0. This bug is causing us issues with our MPLS network. We are having to manually remove each 0.0.0.0 IP from each filter rule in order for our network to stabilize again.
The other issue we have noticed is our MPLS interface is being removed when upgrading from ROS6 to ROS7. We usually only have one interface defined under the MPLS interface tab which is configured to use all interfaces and MTU 9000. We are having to manually add this back to each router we upgrade from ROS6 to ROS7.