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Serial ConsoleOverviewSystems management using serial console utilities and components
provides a cheap and easy solution to remotely manage systems - usually, but not
necessarily - in an out-of-band fashion. Serial console access works by
redirecting console information to the serial port on a managed system/node.
Development efforts
in Management FunctionsThe Linux kernel can be configured to export the terminal via the serial console upon boot-up, meaning that boot messages can be monitored remotely in realtime. With the use of a serial console concentrator or terminal server, multiple systems can be monitored and managed remotely by accessing a single network IP address and using tools within the terminal server to switch between managed nodes. Serial console access is useful for many management functions:
Serial Console ProductsXinit Systems offers a range of excellent serial terminal server products from Opengear. The entry level CM4001 is great for small deployments - while the enterprise grade CM4148 is perfect for corporate datacenter and large cluster installations.
Opengear CM Series OverviewOpengear’s products are built on open source standards. They embody the strength and security of Linux and they enable users to customize management solutions to meet their own needs. The CM4148 console management solution has a simple Web browser interface so the manager can easily configure the appliance, the access security, and the console ports. However, the manager also can interface directly, at the command line, with the Linux kernel running inside the CM4148. Opengear takes a lead role in the development of open source console management and KVM technology. The CM4148 is supplied with okvm source code and the freedom under open source to be uniquely configured and customized to meet the System Administrator’s or IT Manager’s needs.
Console servers provide a robust and secure solution for locally and remotely accessing, monitoring, and controlling networks of servers and appliances. Opengear's CM series provides direct console and screen access for troubleshooting and diagnostics, and enable the infrastructure to be reconfigured and rebooted, ensuring availability at critical times. A CM series console servers at a remote site can be accessed In-band through the Internet or the enterprise IP network; or Out-of-band through a dial-up modem PPP port or a management network. All connections are secure, with encrypted access to remote systems using up to 128-bit AES encryption. CM4000 also provides a selection of filtering and access logging facilities. All console logs can be archived off line. Access also can be restricted by IP address, by password, or by account. So managers can securely control and manage their distributed networks of servers and appliances. Features and Benefits
CM4001 Standalone single port serial terminal server
Opengear’s CM4001 console server enables System Administrators, Network Manager and Support Help Desks to affordably monitor and control the IT systems and networks in their branch offices and distributed customer sites. The CM4001 provides reliable secure access to the serial console ports, and to the graphical desktop screens, of the Windows, Sun and Linux computers in their remote sites. They also monitor and control network infrastructure (switches, firewalls etc) and manage general appliances (PBXs, building security, power switches etc).
CM4008 Standalone 8-port serial terminal serverOpengear’s CM4008 console server enables System Administrators and Network Manager to affordably monitor and control the IT systems and networks in their smaller remote offices anywhere in the world, at any time. CM4008 provides reliable secure text access to the serial console ports; and graphical desktop access over the LAN to the Windows, Sun and Linux computers in their remote sites. CM4008 can also monitor and control network infrastructure (switches, firewalls etc) and manage general appliances (PBXs, building security, power switches etc).
CM4116 1U 16-port serial terminal serverWith Opengear’s CM4116 console server, System Administrators and IT Managers of mid sized enterprises can affordably monitor and control their IT systems and networks anywhere in the world 24/7. The CM4116 has sixteen serial ports that provide secure access to the serial console ports on Windows, Sun and Linux servers. The integrated secure VNC and Windows Remote Desktop access enables administrators to take control of their remote computers just as though they were in front of the computer screens. And the CM4116 also can monitor and control network appliances (firewalls etc) and more general appliances (like building security systems, UPSs and power switches).
CM4148 1U 48-port serial terminal serverWith Opengear’s CM4148 console server, System Administrators and IT Managers of large enterprises can affordably monitor and control their IT systems and networks anywhere in the world 24/7. The CM4148 has forty eight serial ports that provide secure access to the serial console ports on Windows, Sun and Linux servers. The integrated secure VNC and Windows Remote Desktop access enables administrators to take control of their remote computers just as though they were in front of the computer screens. And the CM4148 also can monitor and control network appliances (firewalls etc) and more general appliances (like building security systems, UPSs and power switches). A CM4148 console server at a remote site can be accessed In-band through the Internet or the enterprise IP network; or Out-of-band through a dial-up modem PPP port or a management network. All connections are secure, with encrypted access to remote systems using up to 128-bit AES encryption. CM4000 also provides a selection of filtering and access logging facilities. All console logs can be archived off line. Access also can be restricted by IP address, by password, or by account. So managers can securely control and manage their distributed networks of servers and appliances.
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console-based
management functionality are directed primarily at providing access to system
level utilities such as BIOS and firmware management interfaces. UNIX and Linux
especially, have a long history of serial-based console access for general
usage; but with the advent of powerful video framebuffer hardware, the serial
console has been relegated to an extended systems management role.
