Extreme Networks ExtremeWare XOS 11.0, Справочник по командам

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72 ExtremeWare XOS 11.0 Command Reference Guide
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
If you install two MSMs in the chassis, 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 Management
ExtremeWare XOS monitors and manages power consumption on the BlackDiamond 10808 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:
• Monitors all installed PSUs
• Powers up or down I/O modules based on available power and required power resources
Simple Network Time Protocol
ExtremeWare XOS supports the client portion of the Simple Network Time Protocol (SNTP) Version 3
based on RFC1769. SNTP can be used by the switch to update and synchronize its internal clock from a
Network Time Protocol (NTP) server. When enabled, the switch sends out a periodic query to the
indicated NTP server, or the switch listens to broadcast NTP updates. In addition, the switch supports
the configured setting for Greenwich Mean time (GMT) offset and the use of Daylight Saving Time.
These features have been tested for year 2000 compliance.