Extreme Networks ExtremeWare XOS Command Reference Manual page 104

Commands for Managing the Switch
Telnet
Telnet allows you to access the switch remotely using TCP/IP through one of the switch ports or a
workstation with a Telnet facility. If you access the switch via Telnet, you will use the command line
interface (CLI) to manage the switch and modify switch configurations.
TFTP
ExtremeWare XOS supports the Trivial File Transfer Protocol (TFTP) based on RFC 1350. TFTP is a
method used to transfer files from one network device to another. The ExtremeWare XOS TFTP client is
a command line application used to contact an external TFTP server on the network. For example,
ExtremeWare XOS uses TFTP to download software image files, switch configuration files, and access
control lists (ACLs) from a server on the network to the switch.
System Redundancy with Dual MSMs Installed—
Modular Switches Only
If you install two MSMs in a modular switch, one assumes the role of primary (master) and the other
assumes the role of backup. The primary MSM provides all of the switch management functions
including bringing up and programming the I/O modules, running the bridging and routing protocols,
and configuring the switch. The primary also keeps synchronized with the backup MSM in case the
backup MSM needs to take over the management functions if the primary MSM fails.
Power Supply Management
On modular switches, ExtremeWare XOS monitors and manages power consumption on the switch by
periodically checking the power supply units (PSUs) and testing them for failures. To determine the
health of the PSU, ExtremeWare XOS checks the voltage, current, and temperature of the PSU.
The power management capability of ExtremeWare XOS:
Protects the system from overload conditions
●
Monitors all installed PSUs, even installed PSUs that are disabled
●
Enables and disables PSUs as required
●
Powers up or down I/O modules based on available power and required power resources
●
Logs power resource changes, including power budget, total available power, redundancy, and so on
●
Detects and isolates faulty PSUs
●
On the Summit X450 switch, ExtremeWare XOS reports when the PSU has power or has failed. The
SummitX450 switch supports an internal power supply with a range of 90V to 240V AC power as well
as an external redundant power supply. The Extreme Networks External Power System (EPS) allows
you to add a redundant power supply to the Summit X450 switch to protect against a power supply
failure. The EPS consists of a tray (EPS-T) that holds one or two EPS-160 power supplies. The EPS-160
104
ExtremeWare XOS 11.3 Command Reference