Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
Rudi Ahlers wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
What kind of switch is it?
Why was the switch connected to the server via a serial cable in the first place?
Maybe you can use minicom to connect from the server to the switch?
Mogens
On 11/27/08, Rudi Ahlers rudiahlers@gmail.com wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
Hi Rudi
minicom or screen work well you should have one or the other installed
mike
Rudi Ahlers wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
Hi Rudi,
First, what brand / model of switch is it? Cisco? HP?
Cisco & HP support:
- Serial Connection - Telnet - Web - SSH
But be aware that supported connection type varies from model to model and with firmware version / config.
For example, on Cisco switches, you won't get SSH if it's not configured properly. On Cisco, serial is always enable out of the box so you can configure it. It takes their "blue cable" (their are models with the black one too) and default serial settings are 9600,8,n,1.
Hope this helps.
Guy Boisvert, ing. IngTegration inc.
On Thu, Nov 27, 2008 at 2:53 PM, Guy Boisvert boisvert.guy@videotron.ca wrote:
Rudi Ahlers wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
Hi Rudi,
First, what brand / model of switch is it? Cisco? HP?Cisco & HP support:
- Serial Connection
- Telnet
- Web
- SSH
But be aware that supported connection type varies from model to model and with firmware version / config.
For example, on Cisco switches, you won't get SSH if it's not configured properly. On Cisco, serial is always enable out of the box so you can configure it. It takes their "blue cable" (their are models with the black one too) and default serial settings are 9600,8,n,1.
Hope this helps.
Guy Boisvert, ing. IngTegration inc. _______________________________________________
It's a D-Link Layer 2 switch, with HTTPS & SSH configured, but I think there's something wrong with it, so I want to connect to the console to see what's up.
Something just told me when I got the switch to connect the console cable to a machine's serial port, just for in case.
And now is that "for in case" scenario. So,how do I use minincom,or screen to connect to it? I know the D-Link tech connected via his latop on using Window's Hyperterminal to connect to it, but the Linux server doesn't have it.
Use:
screen /dev/ttyS0
When you're done, to kill your session, press Ctrl-A then K (uppercase) and answer 'y'.
HTH, Filipe
On 2008-11-27, Rudi Ahlers rudiahlers@gmail.com wrote:
On Thu, Nov 27, 2008 at 2:53 PM, Guy Boisvert boisvert.guy@videotron.ca wrote:
Rudi Ahlers wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
Hi Rudi,
First, what brand / model of switch is it? Cisco? HP?Cisco & HP support:
- Serial Connection
- Telnet
- Web
- SSH
But be aware that supported connection type varies from model to model and with firmware version / config.
For example, on Cisco switches, you won't get SSH if it's not configured properly. On Cisco, serial is always enable out of the box so you can configure it. It takes their "blue cable" (their are models with the black one too) and default serial settings are 9600,8,n,1.
Hope this helps.
Guy Boisvert, ing. IngTegration inc. _______________________________________________
It's a D-Link Layer 2 switch, with HTTPS & SSH configured, but I think there's something wrong with it, so I want to connect to the console to see what's up.
Something just told me when I got the switch to connect the console cable to a machine's serial port, just for in case.
And now is that "for in case" scenario. So,how do I use minincom,or screen to connect to it? I know the D-Link tech connected via his latop on using Window's Hyperterminal to connect to it, but the Linux server doesn't have it.
--
Kind Regards Rudi Ahlers _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Fri, Nov 28, 2008 at 1:41 AM, Filipe Brandenburger filbranden@gmail.com wrote:
Use:
screen /dev/ttyS0
When you're done, to kill your session, press Ctrl-A then K (uppercase) and answer 'y'.
HTH, Filipe
Thank you, Filipe. It doesn't work though. The server runs the XEN kernel, and I think there's something I need to enable in XEN for it to work, as XEN uses the console's of the domU's in the same way as a serial console. So, I think I need to redirect it, somehow, but don't know how yet.
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rudi Ahlers Sent: Friday, November 28, 2008 4:41 AM To: CentOS mailing list Subject: Re: [CentOS] how to connect to a switch with a serial cable? - whatcommand(s) to use?
On Fri, Nov 28, 2008 at 1:41 AM, Filipe Brandenburger filbranden@gmail.com wrote:
Use:
screen /dev/ttyS0
When you're done, to kill your session, press Ctrl-A then K (uppercase) and answer 'y'.
HTH, Filipe
Thank you, Filipe. It doesn't work though. The server runs the XEN kernel, and I think there's something I need to enable in XEN for it to work, as XEN uses the console's of the domU's in the same way as a serial console. So, I think I need to redirect it, somehow, but don't know how yet.
Use "minicom -s" to configure Minicom especially the serial port tty~~~~
JohnStanley
Rudi Ahlers wrote:
Hi all,
I see one of our switches doesn't want to respond to HTTPS or SSH commands, and I know it's connected to a server via a serial cable. I'm 3 hours drive from that server at the moment, so how can I connect to it from the Linux server, via SSH?
As a complement of infos on Cisco:
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note0918...
Guy Boisvert, ing. IngTegration inc.
-
Filipe Brandenburger -
Guy Boisvert -
John -
Michael Simpson -
Mogens Kjaer -
Rudi Ahlers