With the log message, it looks like the port 1/19 already has link connected to the remote side which has above information (port 2/50, IP: 10.110.255.210, etc.). So when you are trying to manually add a link on the port 1/19, above log is displayed....
Please refer following link:
Yes, this article states that if there is multicast traffic comming in VLAN-A, the Static-MVR makes the mcast traffic to be leaked to VLAN-B with the MVR static configurations (which is naturally not supported without any multicast ...
Starting in EXOS 16.2 and 21.1 the SSH module is integrated into the standard EXOS image. There is no longer a separate XMOD module needed for SSH.
Please refer following GTAC article as well: