A1. telnet to M4300

Command: telnet {192.168.0239}  , where 192.168.0.239 is M4300 IP address

A2.

User:admin

Password:********

(M4300-52G-PoE+) >en

(M4300-52G-PoE+) #configure

(M4300-52G-PoE+) (Config)#errdisable recovery cause keepalive