04-13-2016 08:00 AM
We have older IBM branded Brocade 200E "Silkworm" switches, recently I updated them to v6.2.2g and everything working fine.
I decided to lock down the switch by disabling TELNET and I managed to lock myself out of SSH/TELNET/HTTPS so I have no way to get back onto the switch.
Then I tried the serial port (straight through DB9 cable) with 9600,8,n,1 no flow control settings; no luck getting a prompt, tried rebooting the switch, etc.
I can ping the switch fine and I stuff works, I just can't administer it.
These are older switches and we dont' keep an active maintenance on them so I am out of luck trying to get support on this.
Anyone out here have any suggestions as to what I could do next? If needs be we can factory reset it but I don't think these switches you can do this without some terminal access first? Any help would be great.
04-13-2016 11:18 AM - edited 04-13-2016 11:19 AM
The problem is SSH is disabled so I can't connect to it, SSH/TELNET/HTTP is blocked (because I created a bad ACL rule which locked me out) and I can't seem to get a serial connection to work to try and reverse the setting, the console cable (DB9 straight through cable) from brocade to laptop but I don't see anything..
Is there anything else I can do to trigger a factory reset of some sort?
04-13-2016 11:27 AM
sorry, I understand you have disable telnet and enable SSH.
you should be able to connect truogh te serial port, and enable telnet back.
did you try it ?
04-13-2016 11:49 AM - edited 04-13-2016 11:51 AM
Yes I tried serial connection but I cannot see anything, seems that serial does not work.
Does the Brocade have a special type of serial cable I need to use or can I use any straight through serial cable? I am using a DB9 female to DB9 female straight through serial cable to connect my laptop to the switch but I do not get anything on the screen it is blank.
I know the switch is up and running and I can ping it; just can't access it via serial... I tried rebooting the switch while being plugged into it via serial but nothing on the screen.
The cable I am using is identical to this..
What can I do?
04-13-2016 12:20 PM
-->>...seems that serial does not work.
didi you set the right parameters ?
and yes brocade used proprietary cable.
04-13-2016 01:20 PM
Yes I set the settings as stated. I do not have the proprietary cable, do you know if we can buy this somewhere? Is there a model # of the serial cable we need?
The serial cable I am using is not the original, so this could be the issue.. we don't have the original cable that shipped with it.
04-14-2016 12:54 AM - edited 04-14-2016 12:54 AM
Hmm... the cable is nothing magical... even Brocade says you can build your own :-)
How do you connect it to your computer? I know that some of our technicians had problems with some kinds of USB-Serial-Adapters. Does your combination of cable + USB-Serial-Adapter + terminal program work with your other Brocade switches? Or do you even still have an old PC with a com-port somewhere in the "archive" (the eternal junk room of "just in case we ever need that again")
04-19-2016 09:23 PM
Indeed, null-modem cable should work. I had one which also converted to my USB port. Very handy.