Remote Port occupation - the device can not remotely log in
A corporate network portion of the architecture as shown below:
Fault Scenario:
through the gateway device 10.15.119.8 10.15.116.200 apparatus and the intermediate floor can not jump to the bottom Layer sign access device 10.15.118.122, remote login can not locally.
1, in the second floor 10.15.119.8 through telnet and equipment stelnet even 10.15.118.122, found it impossible to sign 
2, View 10.15.118.122 equipment and ssh aaa configuration normal; 
3, view other related configuration information is also no problem, as well as online user ;
4, tcp status in our view, this is due to find 122 of five tcp port 22 are occupied cause;
5, we can see only opened vty 0-4 (a total of five channels), and the timeout is not configured VTY, we will now VTY after increasing the number of connections can sign
