Questions tagged [serial]

The general purpose communication interface and related protocols. Specifically, a serial interface transfers one bit at a time ("in serial"), and complies with the RS-232 standard.

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FreeBSD Disable Serial Console from Bootloader?

I have a FreeBSD appliance (meaning I can't open the case or I will void the warranty) that was working well until I accidentally clicked 'Enable Serial Console' and rebooted... I went to plug in my ...
Aaron C. de Bruyn's user avatar
3 votes
1 answer
770 views

Agetty terminating during login on serial connection

I'm trying to login to a server through the serial port using agetty. When I start agetty and open the serial connection, I see the login prompt but as soon as I enter the username (in my case root), ...
AKR1989's user avatar
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minicom cmd not showing

I am using minicom in centos to try to connect to a cisco router. I did the configuration with minicom -s changed the serial port to the appropriate one /dev/ttyS1. Saved as dfl. and Exit. When ...
user1817081's user avatar
3 votes
0 answers
2k views

Serial-Over-Lan with Dell R410. Invalid data field in request

It's a R410 with the latest BMC firmware. I can connect it from a MacBook. $ ipmitool -v -I lanplus -H 192.168.1.23 -U root user list Password: ID Name Callin Link Auth IPMI Msg ...
Cheng's user avatar
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-1 votes
1 answer
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DB25 printers to pc [closed]

If computer has a single parallel port then how can I connect three paralel printers on this pc ? Print Server seems a solution but seems expensive.However these printers might be far away.Is there ...
user170481's user avatar
0 votes
2 answers
991 views

How to connect a Mac laptop to a server via the serial port?

I'm a applications guy trying to set up a Dell c6100 server that doesn't boot. We'll have physical access tomorrow. The box has a serial connector for console access. We'll have a MAC laptop. Are ...
davidparks21's user avatar
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1 answer
506 views

Getting VM on ESXi to use COM ports on local (thin?) client

Setup: WinXP VM on ESXi v4.1 infrastructure system, accessible via vSphere thick client and RDP WinXP client (i.e. my laptop) with a device connected to the serial port How do I get the VM to talk ...
Dan Coates's user avatar
2 votes
2 answers
23k views

Need help setting up an HP Procurve 2650 switch via serial using Linux.

I recently bought an HP Procurve 2650 (J4899A) off ebay and it came out without a serial cable. So I also purchased a null modem serial cable (rs232) to connect to it (Assuming this is the right one). ...
user168209's user avatar
0 votes
3 answers
3k views

How to enable serial console on Cisco Catalyst 4948

I recently bought used Cisco Catalyst 4948 and can't configure it : is see no link on all interfaces, serial console works but only output I only can stop autoboot and enter in rommon. Any hints how ...
Jhon's user avatar
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6 votes
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Windows/Linux socat to share a serial device over IP

I have a scenario where I demonstrated to my group @ work how to share a very expensive USB patient simulator plugged into a Raspberry Pi (Debian) using socat. The group wants to be able to have an on-...
wxfield's user avatar
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Attempting to configure Dell PowerConnect 6244 No Output from Serial Port

I am trying to configure a Dell PowerConnect 6224 Switch managed switch. The documentation for setup can be found here. However I am unable to connect via serial port to the switch. I do not have ...
tweirick's user avatar
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SOL configuration on Tyan S8225

I'm trying to get Serial over LAN working on a Tyan S8225 motherboard running Linux. The idea is to be able to connect to it on another PC running Linux with the command ipmitool -I lanplus -H 192....
hookenz's user avatar
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2 votes
0 answers
3k views

Linux: serial port forwarding via RDP to Windows machine

I'm trying to redirect serial device on /dev/ttyUSB0 to RDP session with Windows (XP or server 2003) through FreeRDP or rdesktop. Like this for example: xfrerdp /a:serial,COM3,/dev/ttyUSB0 /v:server ...
Dmitry Bastron's user avatar
2 votes
2 answers
6k views

Powervault MD circular console cable

We have two Powervault MD SAS devices, the specific model eludes me as these are remote and not accessible to me and anyone on-site doesn't have the capability to locate a service tag/serial or model ...
TryTryAgain's user avatar
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How to replicate the internet connection when a XP Workstation is Virtualized?

Hi here is the issue for me; We have a Workstation A which is connected to our Server B ; this workstation's sole puspose is to work as a terminal server for the outside vendor to login to the server ...
Darktux's user avatar
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How to start qemu directly in the console (*not* in curses or SDL)

I seem to recall being able to start qemu with only the terminal emulator output, with the graphic window disabled. And here I don't mean with the ncurses interface, that one is nice, but I want the ...
anarcat's user avatar
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VMWare serial connection between two vm hosts

I am attempting to simulate a serial connection between two VMWare virtual machines running CentOS 6.3; both hosted on the same VMWare vSphere 5.1.0 host (linux based ). Googling yielded these ...
Gus's user avatar
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2 answers
981 views

Why are serial console ports on network switches 8P8C/RJ45 sockets? [closed]

It has always seemed a bit strange to me that the console ports on networking gear are 8P8C (popularly referred to as "RJ45" even though that's not strictly applicable here) connectors and require an ...
tgies's user avatar
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1 answer
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Scheduled capture from COM port

I want to capture COM output to a daily file. I can capture manually, using something like RS232 Data Logger, but I want to run a scheduled task so I get a daily log of the data captured. Is there ...
Ben's user avatar
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FreeBSD Serial IO card installation

I am trying to install a PCI serial IO card on a FreeBSD 9.1 (Prerelease) box. I had no success during hours of work. I recompiled kernel using puc and COM_MULTIPORT options. No success. This is ...
Kamyar Inanloo's user avatar
0 votes
1 answer
689 views

Which version of windows to download for a serial code

I have a serial code of a Windows XP (it is on the case), but i do not know which version of Windows to download. How could i find out from the running system which version should I download? Because ...
theSpyCry's user avatar
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1 answer
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windows 2003 - why can't serial port be accessed remotely?

we have recently (foolishly) installed the updates on some of our servers, which have a bit of hardware attached via USB that presents itself as a serial (COM) port. The strange behaviour is that if ...
Danny Staple's user avatar
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How to redirect a Hyper-V COM port named pipe to a file?

I would like to redirect the serial port output on RedHat 5.7 to some recordable or reviewable medium. The normal way to do this on a physical machine is to add the console parameters to the kernel ...
TinyGrasshopper's user avatar
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786 views

Two Cisco 2901 Back-to-Back using X.21 (HWIC-2T) - Am I missing some config?

I have two Cisco 2901 GWs, each has an HWIC-2T interface module. I want to set them up back-to-back to send network traffic between PCs and Phones connected to my GWs over this link. I have CAB-SS-...
Ian's user avatar
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Unable to connect to IBM G8000R via serial

I have just received a new IBM switch, a G8000R. It's written on the guide it is necessary to establish a connection between switch and hyperterminal console. So I have connected the switch via a "...
Sam's user avatar
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3 votes
2 answers
6k views

agetty is constantly terminated

I'm trying to set up serial console on CentOS 6.2. I've been able to get a login console, but if I try to enable grub and the kernel log showing on the serial port, grub keeps being terminated every ...
Ovesh's user avatar
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1 answer
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Windows 7 Print Spooler keeps serial ports locked also when stopped

I have a program (environment is Windows 7 Enterprise 32bit) that scans available serial ports to detect a specific device. But on many machines a printer driver is configured on one of the serial ...
Axeman's user avatar
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3 votes
2 answers
393 views

Resetting root password on Fedora Core 3 - serial cable access only

A little background: We have an old rackmount server running a customised version of Fedora, manufactured by a company called Navaho. The server is a TeamCAT, running some proprietary rubbish called ...
Sensible Eddie's user avatar
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1 answer
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Debian Squeeze guest running under KVM, how to get serial?

I've just got it running on Ubuntu, have installed everything but the kitchen sink. Got virt-console, virt-manager, running debian Squeeze, everything works. But... I don't want to connect via vnc. ...
Bryan Hunt's user avatar
7 votes
2 answers
3k views

What are the minimum permissions to read the WMI class 'MSSerial_PortName'?

I am configuring a local application user (part of BUILTIN\Users) on a Windows 7 kiosk. The kiosk has a special USB device running on a virtual COM port. The user needs permission to read the WMI ...
Anthony Mastrean's user avatar
9 votes
1 answer
4k views

ESXi - serial console as default console

I have headless Supermicro server with IPMI as my ESXi 5 but I would like to use serial console as default console for ESXi instead of accessing it via IPMI VGA console redirection. I have some ...
jirib's user avatar
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3 votes
1 answer
7k views

RDP ts port redirection

I have 2 pairs of serial devices (a scale and a POS pin pad) hooked up to 2 pcs (4 serial devices in total) with windows xp embedded sp3 (x86) running RDC/rdp 6.0. I am using those machines to RDP ...
Mitchell Skurnik's user avatar
1 vote
2 answers
232 views

Serial connections on network

May sound like a stupid question but just wanted to make sure. Does every serial connection need to have its own IP address. Router 1: Serial 0/0/0 IP address 172.10.80.193/30 Serial 0/1/0 IP address ...
Melevin Mandana's user avatar
-1 votes
1 answer
125 views

DTE & DCE advice

I am just wondering what the meain differences are between these two and do they need to have different clock rates. I am right in thinking that if I was linking two routers together via serial I ...
mitchnufc's user avatar
  • 101
7 votes
2 answers
6k views

Forwarding serial port over network and back to serial char device on remote host (socat?)

I'm working with a linux application which needs to talk with a remotely-located serial (rs-232) device. I've worked out how to use socat on the remote end to send the device's serial data over an IP ...
Alex G's user avatar
  • 386
1 vote
2 answers
713 views

Pinout: RJ-45 to DB25 adapter for SunBlade 2000

Our suite got new carpet this weekend, and as I was moving the machines out of the way I pulled apart the serial adapter. The RJ-45 clip held fast, and the metal body was screwed tight to the machine ...
MT_Head's user avatar
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1 vote
2 answers
13k views

Serial to ethernet cable: how to connect to device

How can I use a serial to ethernet cable to connect to a device: in my case a Hp ProCurve AP? A serial to USB or serial to serial would have been great but I found this serial to ethernet cable from ...
Dragos's user avatar
  • 369
2 votes
1 answer
684 views

Virtual COM port to TCP server?

I've got a project that there's no budget for. Basically I need to get a null modem connection set up between our phone systems(physical servers running Win2K8 32b) and our new reporting system(...
Justin Popa's user avatar
0 votes
1 answer
2k views

Command server reboot using serial port or other method

I manage 3 windows servers for my dad's business, and occasionally they lock up. I work remotely and would like to send commands to the motherboard to reboot using the buttons on the chasis. I have ...
steampowered's user avatar
1 vote
1 answer
1k views

How do I stop Windows from sending random data to serial port on startup and shutdown? [closed]

I have an Epson DM-D110 display pole connected to COM1. When Windows XP starts up and shuts down, a small bit of random character data is sent to the display pole. Some times it's the fish symbol, ...
JakeTheSnake's user avatar
13 votes
6 answers
3k views

Real benefits of serial console servers (with modern server hardware)?

I'm working in a new environment that makes heavy use of serial console servers for server management. They are augmented with switched PDUs for power management. They are not using the DRAC ...
ewwhite's user avatar
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2 votes
2 answers
931 views

Cisco Serial vs T1/E1

I have a router and I have the chance to receive the WAN connection either from a Serial port (Smart Serial) or T1/E1. I have both cards for Serial and E1/T1 interfaces. I really don't know what are ...
Andre's user avatar
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0 votes
1 answer
531 views

Serial Port (COM1) becomes unresponsive

Originally I made a POS application using Excel/VB. Everything worked A-OK, especially the serial communication with the POS display pole. Here's an example of the code by which I had the ...
JakeTheSnake's user avatar
1 vote
1 answer
2k views

How to access a server via serial port?

I have some troubles with my server! After I asked for support, I get the following answer: You can use the serial port to reset your network configuration. I have a client machine with Ubuntu ...
artaxerxe's user avatar
  • 541
6 votes
2 answers
40k views

How to perform a APC 9617 Reset?

I've locked myself out of an APC 9617 management card. Trying to figure out how to reset the password, or even the card to factory defaults. All the documentation I can find says to connect to the ...
bab's user avatar
  • 443
2 votes
2 answers
9k views

What is the name of the cable (RJ45 to RJ45) that can be used to connect from a KVM to Cisco serial port?

As everybody knows Cisco's console ports are RJ45. However, the cable they come bundled with is DB9 to RJ45. We have a KVM that allows managing network devices via a serial port but the port on the ...
Alex's user avatar
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2 votes
1 answer
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Installing and running a guest OS on KVM-qemu with only serial console access

I am trying to installing a bsd distro with virt-installer. With a Linux distro I used this: virt-install -n debian -r 1024 --vcpus=1 --accelerate -v --disk /var/kvm/installation-disks/debian.img,...
nixnotwin's user avatar
  • 1,553
1 vote
1 answer
1k views

How to serial-over-lan past "Loading initial ramdisk"?

I'd like to use "ipmitool ... sol activate" to record any kernel panics that may happen. I managed to keep GRUB2 in text-mode with "GRUB_TERMINAL=console" in /etc/default/grub. But right after the ...
korkman's user avatar
  • 1,667
3 votes
1 answer
373 views

Windows 2008 login via serial cable

Does anyone know a way to connect to windows 2008 via serial cable? I mean that you will be able to login to the server properly (via terminal) and then you will be able to run a CLI application. ...
mrdvlpr's user avatar
  • 133
1 vote
3 answers
4k views

juniper j2300 console connection?

I've been given a Juniper Networks J2300 router, but I've never used a juniper device before and no idea where to begin on how to connect to the console of the device. I have a serial to RJ45 cable ...
Rhys Evans's user avatar