Extreme Networks ExtremeWare 7.2e, Инструкция по установке и эксплуатации

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52 ExtremeWare 7.2e Installation and User Guide
Managing the Switch
Using Secure Shell 2 (SSH2)
Secure Shell 2 (SSH2) is a feature of ExtremeWare that allows you to encrypt Telnet session data
between a network administrator using SSH2 client software and the switch, or to send encrypted data
from the switch to an SSH2 client on a remote system. Image and configuration files may also be
transferred to the switch using the Secure Copy Protocol 2 (SCP2). The ExtremeWare CLI provides a
command that enable the switch to function as an SSH2 client, sending commands to a remote system
via an SSH2 session. It also provides commands to copy image and configuration files to the switch
using the SCP2.
For detailed information about SSH2 and SCP2, see Chapter 9, “Security”.
Using SNMP
Any Network Manager running the Simple Network Management Protocol (SNMP) can manage the
switch, provided the Management Information Base (MIB) is installed correctly on the management
station. Each Network Manager provides its own user interface to the management facilities.
The following sections describe how to get started if you want to use an SNMP manager. It assumes
you are already familiar with SNMP management. If not, refer to the following publication:
The Simple Book
by Marshall T. Rose
ISBN 0-13-8121611-9
Published by Prentice Hall.
Enabling and Disabling SNMPv1/v2c and SNMPv3
ExtremeWare versions since 7.1.0 can concurrently support SNMPv1/v2c and SNMPv3. The default for
the switch is to have both types of SNMP enabled. Network managers can access the device with either
SNMPv1/v2c methods or SNMPv3. To enable concurrent support, use the following command:
enable snmp access
To prevent any type of SNMP access, use the following command:
disable snmp access
To prevent access using SNMPv1/v2c methods and allow access using SNMPv3 methods only, use the
following commands:
enable snmp access
disable snmp access {snmp-v1v2c}
There is no way to configure the switch to allow SNMPv1/v2c access and prevent SNMPv3 access.
Most of the commands that support SNMPv1/v2c use the keyword
snmp
, most of the commands that
support SNMPv3 use the keyword
snmpv3
.