Failed to connect to '127.0.0.1:7199'

[zg]

Hi everyone,
I have a 3 nodes cluster, one node when I use  nodetool, I met a error
"Failed to connect to '127.0.0.1:7199':Connection timed out", use CLI and
CQLsh is ok on this node, the other two nodes is OK when I use nodetool
commend. So what's the problem with that node?