We have a cisco router in another location that has both ARPA and HDLC entries. We don't use HDLC and we don't need it at all. How do I get rid of these sessions and disable them from reoccurring.
They are only coming in on serial0/0 in the interface, there is nothing to do with HDLC anywhere. I went into that interface and used the "no encapsulation HDLC" command. This didn't solve the problem.
I would like to avoid blocking specific IPs/MACs. Is there a way to completely disable HDLC on the router itself.
Any Help is appreciated.