Error Failed To Connect To Alom
and troubleshooting suggestions. It contains the following sections: Modem Configuration Troubleshooting Troubleshooting ALOM Problems Using ALOM to Troubleshoot Server Problems ALOM Shell Error Messages scadm Error Messages Modem Configuration Troubleshooting TABLE A-1 provides solutions for common modem configuration problems. TABLE A-1 Modem Troubleshooting Issue Solution ALOM modem does not answer Verify that cabling is set up correctly.See the if_modem variable for additional information ALOM modem answers then immediately hangs up Verify that if_modem variable is set to true. ALOM modem answers but connections appear dead Type the ALOM escape character #. (pound-period) to see if you can return to the sc> prompt. Ensure that the serial management port speed and modem port speed are set to the same value. Try disabling data compression. On many modems, this is done by using the AT&K0 modem command. Troubleshooting ALOM Problems TABLE A-2 provides a list of common ALOM difficulties and their solutions. TABLE A-2 ALOM Diagnostics Problem Description Can't log in to ALOM Perform the following actions to troubleshoot ALOM log-in problems: Check the ALOM device name you are connecting to: (for example, bert-sc). Make sure that you have the correct ALOM name for the corresponding server. Check that you are using your correct ALOM username; it might not be the same as your system user name. Check that you are using your correct ALOM password. Can't connect to ALOM using the telnet command ALOM supports a total of four concurrent Telnet sessions per server. When the maximum number of Telnet sessions are active, further attempts to connect using the telnet command will receive a connection closed error. The following example shows system messages for the UNIX operating environment: % telnet bert-sc Trying 129.148.49.120... Connected to bert-sc. Escape character is '^]'. Connection closed by foreign host. Can't connect to ALOM through the Ethernet connection First, log in to the server as root and check whether the scadm version command succeeds. If it does, ALOM is working and there is an Ethernet configuration problem. Use the scadm show command to check whether Ethernet configuration variables are set correctly. You can also perform the following actions to troubleshoot Ethernet problems: Log in to ALOM through the serial management port (SERIAL MGT) and use the shownetwork command to s
Features What ALOM Monitors Fault and Failure Terminology Platform-Specific Information Subsequent chapters contain detailed instructions for configuring and using ALOM. ALOM Features Sun Advanced Lights Out Manager (ALOM) is a system controller that enables you to remotely manage and administer the Netra server. The ALOM software comes preinstalled on your host server. Therefore ALOM works as soon as you install and power on the server. You can then customize ALOM to work with your particular installation. Refer to Configuring ALOM. ALOM enables you to monitor and control https://docs.oracle.com/cd/E19102-01/n440.srvr/817-5481-11/trouble_appx.html your server, either over a network, or by using a dedicated serial port for connection to a terminal or terminal server. ALOM provides a command-line interface that you can use to remotely administer geographically distributed or physically inaccessible machines, see ALOM Shell Commands. In addition, ALOM enables you to run diagnostics remotely such as power-on self-test (POST), that would otherwise require physical proximity https://docs.oracle.com/cd/E19102-01/n440.srvr/817-5481-11/intro.html to the server's serial port, see Troubleshooting ALOM Problems. You can also configure ALOM to send email alerts of hardware failures, hardware warnings, and other events related to the server or to ALOM. The ALOM circuitry runs independently of the server, using the server's standby power. Therefore, ALOM firmware and software continue to function when the server operating system goes offline or when the server is powered off. What ALOM Monitors This section shows some components that ALOM can monitor on the Netra server. Component Monitored What ALOM Reveals Disk drives Whether each slot has a drive present, and whether it reports OK status Fans Whether a fan is present, fan speed and whether the fans report OK status CPUs Whether a CPU is present, the temperature measured at the CPU, and any thermal warning or failure conditions Power supplies Whether each bay has a power supply present, and whether it reports OK status System enclosure temperature System ambient temperature, as well as any enclosure thermal warning or failure conditions Circuit breakers and voltages Whether circuit breakers have been tripped, and whether correct voltages are reported Server front
having exposure on VXVM, Clustering, Virtualization etc.,. If you find something useful, a comment would be appreciated to let other viewers also know that the http://schalwad.blogspot.com/2013/11/troubleshooting-alom-problems.html solution/method work(ed) for you. Friday, November 22, 2013 Troubleshooting ALOM Problems Troubleshooting http://www.softpanorama.org/Hardware/Sun/ALOM/alom_setup.shtml ALOM Problems TABLE A-1 provides a list of common ALOM difficulties and their solutions. TABLE A-1 ALOM Diagnostics Problem Description Can't log in to ALOM Perform the following actions to troubleshoot ALOM log-in problems: •Check the ALOM device name you are connecting to: (for example, error failed bert-sc). Make sure that you have the correct ALOM name for the corresponding server. •Check that you are using your correct ALOM username; it might not be the same as your system user name. •Check that you are using your correct ALOM password. Can't connect to ALOM using the telnet command ALOM supports a total of four concurrent Telnet sessions per error failed to server. When the maximum number of Telnet sessions are active, further attempts to connect using the telnet command will receive a connection closed error. The following example shows system messages for the UNIX operating environment: % telnet bert-sc Trying 129.148.49.120... Connected to bert-sc. Escape character is '^]'. Connection closed by foreign host. Can't connect to ALOM through the Ethernet connection First, check whether ALOM is working or there is an Ethernet configuration problem. You can also perform the following actions to troubleshoot Ethernet problems: •Log in to ALOM through the serial management port (SERIAL MGT) and use the shownetwork command to see the current settings. Refer to shownetwork. •Log in to another machine on the network and use the ping command to see whether ALOM is operating. Be sure to use the ALOM device's name (for instance, servername-sc), not the host server's name, as the argument to the ping command. •Run SunVTS diagnostics to check the Ethernet connection. The external Ethernet test requires that the device be connected to a functional 10-Mbit hub. •Run SunVTS diagnostics to check the
root account ALOM Setup using serial management interface Recommended Links Reference ALOM is an independent system controller providing a command-line interface that controls Sun Fire V series servers including, but not limited to, V210 and V240. ALOM enables the administrator to run diagnostics (such as POST) remotely and can be configured to send email alerts of hardware failures/warnings or other server-related events. Components that ALOM can monitor include, for example, system temperature and voltages, CPUs, disk drives, fans, and power supplies. ALOM is a special imbedded computer that runs independently of the server, using the server's standby power. Therefore, its firmware continues to function when the server operating system goes offline, into init S mode due to severe configuration errors or when the server is powered off. It can be setup from root account on the server or via serial management inteface. Most important capabilities: Remote console interface (console command) including remote access to Open Boot. Host monitoring (disks, fans, power, temp, PSU) Host control (commands poweroff, poweron and reset) User configurable delivery of events to ALOM CLI, email, and syslog. ALOM setup using root account You need to assigned a separate IP address, netmask and gateway for ALOM Net Interface and connect the cable to use it If you have root access to this machine you can use scadm utility to set IP address, netmask and gateway for ALOM network interface. scadm is located at platform dependent directory that for V210 boxes is /usr/platform/SUNW,Sun-Fire-V210/sbin/ /usr/platform/`uname -i`/sbin/scadm set netsc_ipaddr 10.194.128.41 /usr/platform/`uname -i`/sbin/scadm netsc_ipaddr 10.194.128.41 /usr/platform/`uname -i`/sbin/scadm netsc_ipnetmask 255.255.240.0 /usr/platform/`uname -i`/sbin/scadm netsc_ipgateway 10.194.128.1 To view setting you can use /usr/platform/`uname -i`/sbin/scadm show | grep netsc and network settings of your workstation. Here is sample output from my sample V140: # /usr/platform/`uname -i`/sbin/scadm show | grep netsc netsc_t