RB493AH hangs on reboot

macsrwe · July 20, 2011, 3:17am

I have a new RB493AH that I just upgraded to 5.5. Now it is hanging every time I try to reboot it. When I type /system reboot, the serial port says:

Rebooting...
Stopping services...
echo: system,info,account user admin logged out via local
Restarting system.

…then it sits there with the blue LED on and the green LED mostly on but flickering about once a second. Removing and reinserting power puts it back in the same state. The only thing that seems to work is removing power for over five minutes, then reinserting power, at which point it comes up as if nothing strange has happened.

/system check-installation is happy. I’m using a 12V 300mA wall wart, which should be sufficient for a router that isn’t actually running anything. I’ve appended some configuration details below. Do I have a bad piece of hardware?

/system package print
Flags: X - disabled
 #   NAME                                                            VERSION                                                            SCHEDULED
 0   system                                                          5.5
 1   advanced-tools                                                  5.5
 2   ipv6                                                            5.5
 3   security                                                        5.5
 4   routing                                                         5.5
 5   dhcp                                                            5.5
 6   ntp                                                             5.5
 7   ppp                                                             5.5
 8   multicast                                                       5.5
 9   routerboard                                                     5.5
10   mpls                                                            5.5

/system routerboard print
       routerboard: yes
             model: 493AH
     serial-number: 279801AB6422
  current-firmware: 2.29
  upgrade-firmware: 2.29

kirshteins · July 21, 2011, 5:15am

Do you use any extension card on this router? Try using more powerful power supply, as we are not aware of any problems with rebooting in v5.5.

mietus · July 21, 2011, 11:44am

are you using this board as pppoe server with SQ?
if yes try to disable interface that pppoe server works on and then reboot.

macsrwe · July 21, 2011, 12:45pm

I have no radio cards. I had the serial port and one ethernet cable attached, doing an initial configuration on the new board. No PPPOE. The fanciest thing on it was a PPTP server, and it wasn’t even in use.