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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Are the tty parameters stored somewhere when using screen?
Here is the story:
From a fresh install of ubuntu I use a serial to usb device. screen /dev/ttyUSB0 everything goes fine and I can interact with the device perfectly.
Then I unplug this device, plug ...
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How can I connect to a cisco switch via serial console cable from powershell?
I don't actually need to perform any operations on the switch. I just need to verify it's there.
I have some remote servers that I need to verify have the blue serial console cable hooked up ...
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APC Smart UPS serial connection on Windows Server 2012 R2
I have an APC UPS 620 and a Windows Server 2012 R2 (non virtual) server. The server and the UPS are connected with genuine APC serial signaling cable.
Without installing any software the APC is not ...
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How to connect a switch and a router to laptop via putty
I am new to configure a switch 2950 and a router 2651 to laptop using putty on my home lab.
My problem is that after I connected my router through console cable to laptop I and decided to add a switch ...
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Minicom Serial Port Connection Output
I have recently purchased a Cisco PIX 501 firewall and I have connected to the console port with a serial port USB adapter. After doing this I open up my terminal and start minicom. Here are my ...
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Serial communication between QEMU host and guest
I'm trying to set up a pair of serial ports between my QEMU host (Debian Jessie x86_64) and guest (also Debian Jessie, but on ARM). Everything except the serial port part works.
I'm really new to ...
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How to tell whether a serial connection is "established"?
We have a Debian-based embedded device. It runs an application that communicates with other embedded equipment via serial (RS-232, /dev/ttyS*). Usually, this works just fine. But of course, sometimes ...
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How to add a serial port to a Windows 7 guest VM using Xen server 6.5?
We wonder how to add a SERIAL PORT (COM2) into a guest HPVM Windows 7 64 bits in a xen server 6.5 bare metal hypervisor.
We have some clients connecting through RDP v8.1 (from Win7-64 to Win7-64) ...
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VMware remote virtual serial port concentrator
I'm setting up a Cisco virtual wireless controller using the guide provided here: http://www.labminutes.com/wlc0001_vwlc_7_3_vmware_installation
The narrator talks about making sure your VMware is ...
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Serialization with Ansible with a jumpbox/build-server
We are using a build-server that is delegating_to and deploying the build to the application servers. I am not sure how we are going to "serialize" since everything is being done on the build-server ( ...
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Why can't I connect to this switch ther the comm port?
I have an enterasys C2G124-48 switch that I need to set up some port mirroring on to troubleshoot some Voip issues. However I am having issues connecting to the switch through putty.
I am following ...
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How can I get split one serial connection into two
I need to get an application and a monitor to read from the same serial port, the application will be the only program that will be able to read/write to the serial port and the monitor will only be ...
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Is there a way to use a server serial (com) port as a client to connect to a switch console?
I'm trying to connect an IBM idataplex 360 M4 node via it's front rs232 port to the console port of a switch with the switch's supplied cable, but I'm having no luck.
The server is running RHEL 6.5 ...
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resetting Cyberoam cr 15i UTM console Password
i forget my cyberoam cr 15i firewall password and i reset the system. but now i cant login through console also. default password 'admin' is not accepting there. when iam connecting to console ...
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Cisco console, is possible to have DB9 split out to multiple RJ45's?
Cisco Serial Console cables are simply DB9 to RJ45. Of course many people have now come to use a variety of DB9 to USB adapters to get around many machines not having serial ports. But I'm more ...
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expect script running screen stops working when run by cron
I hope this question is OK for this forum.
I have a device, a modem. I talk to this modem with the linux program "screen" as a terminal program. I invoke it like this "/usr/bin/screen /dev/tty6". I ...
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Palo Alto PA-4020 cannot connect to terminal through Serial to USB
I have a PA-4020 that I messed up the configuration on, and I am trying to do a factory reset. I went ahead and ordered a few different serial to USB cables, and cannot connect through a Mac App ...
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Tcp connection breaking, too fast for serial?
I've been having real difficulties getting a tcp connection to work with my web server. I think the issue might have something to do with the speed or ordering of the packets as the connection seems ...
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Raritan serial consoles (DSX) totally unreliable
We have some serial consoles by manufacturer Raritan.
More specifically, 8-port and 16-port DSX-8 and DSX-16s.
Currently, I seriously doubt their stability.
What happens most of the time:
Usually, ...
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How to replace a hardware modem by virtual modem
I have an embedded device that is connected by an old dial-up modem to
the Internet. I cannot change the embedded device but would like to
connect the embedded device to a Linux machine that has an ...
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hdparm serial number is garbage
I'm trying to read the model and serial number from a drive using "hdparm -I /dev/sda" and I find on some systems (eg: VMware virtual machines) the serial number and model often return garbage (see ...
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Telnet, Startech, and a Transmitter
I'm at a bit of a loss and will also preface by saying that I have very little experience working with Telnet. I have Startech Serial over IP 'webserver' setup, everything seems fine on this end. Next ...
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how to disable serial console after successful boot (systemd/grub2)
I enable the serial console during the boot process on centos7 which uses grub2 and systemd (instead of inittab)
I would like to undo that serial input/output at the very end of the boot, after a ...
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Grub CLI Arrow Keys Don't Work With IPMI SOL
When I am using the Grub CLI via IPMI sol I am unable to use the arrow keys, as well as some keys such as delete. What happens when I press the Left key I get random 'D' characters appearing, even ...
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Is disk serial readable from supermicro chassis?
We are working with a hosting company for managing our dedicated servers. We asked for a replacement disk on one of the servers by providing the serial number. They took out 2 other disks instead and ...
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udev rule running setserial low_latency don't work
My server runs Ubuntu 14.04.1. I created udev rules in /etc/udev/rules.d/09-pps.rules to get GPS with PPS support work.
KERNEL=="ttyS0", SYMLINK+="gps0", MODE="0666"
KERNEL=="ttyS0", RUN+="/bin/...
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Two port PCI serial card. One port can only set baud rate once
I have a new PCI serial card, being used on a Ubuntu 14.04 box.
It's serial ports show up as /dev/ttyS4 and /dev/ttyS5.
$ dmesg | grep ttyS
[ 0.732690] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, ...
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Using pppd with a serial port?
I just need to send/receive a messages through a unix-socket with PPP. But at first I want to launch the pppd with an usual serial port to make sure I know how it works. As I see, if I bind a pppd to ...
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Text on Cisco ASA console is garbled/missing letters
I've actually looked up a number of solutions for this problem and none of them work. There's this Cisco ASA 5505 that I'd like to use, that outputs mildly garbled text with missing characters. I did ...
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User privileges enumerating serial device
I'm trying to use the Java Simple Serial Connector on Arch Linux. I have a simple program listed below:
import jssc._
object Main {
def main(args:Array[String]):Unit = {
println("Started")
...
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Debian as TCP-Server for Serial Port redirecting [duplicate]
I want to start a tcp listener on debian. One client should be able to connect and should get inputs of serial port in the tcp connection. And when the client sends data through the tcp socket the ...
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Special Administration Console (SAC) in linux
Windows have Special Administration Console (SAC), same feature is available to linux?
Refer http://technet.microsoft.com/en-us/library/cc785873(v=ws.10).aspx
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Connecting two routers via serial
I'm new to Cisco and I wanted to connect two routers with serial connection. This is how my network looks now:
Maybe I connected them wrong because when I try to ping from PC0 to either PC2 or PC3 I ...
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How to redirect screen display to rs232 in Linux?
I need to redirect all Linux output to rs232 port in order to connect to it via console cable or via ssh or telnet.
How to do that? Is it possible to do that wihtout recompiling the kernel?
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Is there a device with multi auxiliary (AUX) ports to configure multiple devices
Level: Beginner
Sorry for the confusing title. I shall try to explain my best to explain my question.
Question: Is there a networking device named X that has multiple AUX ports so that I can connect ...
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Serial Over LAN on FreeBSD with SuperMicro X9-SCM-F
How can I setup Serial-Over-Lan (SOL) on FreeBSD with a SuperMicro X9-SCM-F motherboard? There are a few resources out there but they contradict each other, are unclear, and don’t actually allow me to ...
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Serial port - changing settings during usage
I am using one of Gumstix Overo boards, it has OMAP3 CPU, which includes some UARTs.
Now, I am wondering what will happen if I will be sending some data on some serial port (for example /dev/ttyO0), ...
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How to use a serial bar-code scanner as a keyboard
I have a bar-code scanner connected through serial. I can get the readings (or data) through Putty.
I am looking to use the scanner as a keyboard, so that the scanner readings go directly to the text ...
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XenServer Guest PV - Serial Port RS232
Is there any way how to forward (passthrough) physical serial port to XenGuest PV system?
I need to be able to configure serial device with virtual server on XenServer 6.2.
I’m looking for a solution ...
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Redirect tty out to serial?
Im trying to debug an issue we are having with netbooting a RedHat box. The anaconda installer scribbles useful log data to the second virtual terminal (Ctrl-Alt-F2) but I would like to be able to see ...
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UltraSPARC Serial Port and Required Cable
I have two large SPARC machines and no monitor cable that plugs into them. So I'm trying to get a serial connection to them through null modem cables. However, there doesn't appear to be such ports on ...
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Windows serial console
How do I enable a serial console on Windows (2008 and/or 2012) such that I can log into it like the Good Old Days of Real Servers and issue provisioning commands, ideally via PowerShell?
$ cu -l /dev/...
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pretty-printing IP packets [closed]
I'm receiving IP packets using the SLIP protocol, and I'd like to pretty-print them similarly to how tcpdump does it. My program is able to decode the SLIP protocol and create a single string ...
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persisting esxi /bootbank/boot.cfg across reboots
i have a serial console connected to my esxi 5.5 server. and the configs work fine for the pxe install. however, upon reboot my console no longer works:
i believe i need to change the file /bootbank/...
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Create a symlink to a serial port
I have a software that outputs some info to a text file. Now I want to redirect that output to a serial port. The file name is hard coded in the software. So I decided to create a symlink to the ...
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Serial Over Lan doesn't redirect OS terminal
I'm trying to create a monitoring system for a remote machine using an IPMI Serial Over Lan (SOL) console. The remote OS is RHEL 6, the mobo manufacturer is Supermicro.
I've successfully enabled SOL ...
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Solaris10 Hard Disk Information
I am trying to inventory hard disk information remotely (serial number, disk size, manufacturer...) but am having trouble. I know the drive(s) are configured under a raid controller, but can I view ...
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How to diagnose RDP with commandline?
I have a server with 1and1 and they have given up trying to restore RDP access (not trying at all) and told me to re-image the server. As this is a production machine, I'd like to avoid this since it ...
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Protocol choice for Machine-to-Machine communication - level:n00b
I am building a monitoring system for an irrigation pump and the connected pipeline. So far I have completed the sensor network. Everything connects to a micro-controller board (actually 4 Teensy 3.0 ...
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Using Serial to RJ45 cable to connect to a 3Com switch
I have always use a serial to serial port or serial to usb to connect to switches. Normaly they came with RJ45 to usb cable in cases when I had a RJ45 cable to serial. But now I have 3Com switch ...
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