Extreme Networks EAS 100-24t Switch, Руководство по установке оборудования

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IP Address Assignment
Extreme Networks EAS 100-24t Switch Hardware Installation Manual
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a standard presentation of the information controlled by the on-board SNMP agent. SNMP defines both
the format of the MIB specifications and the protocol used to access this information over the network.
The switch supports SNMP versions 1, 2c, and 3. You can specify which version of SNMP you want to
use to monitor and control the switch. The three versions of SNMP vary in the level of security
provided between the management station and the network device.
In SNMP v.1 and v.2, user authentication is accomplished using 'community strings', which function like
passwords. The remote user SNMP application and the switch SNMP must use the same community
string. SNMP packets from any station that has not been authenticated are ignored (dropped).
The default community strings for the switch used for SNMP v.1 and v.2 management access are:
●
public - Allows authorized management stations to retrieve MIB objects.
●
private - Allows authorized management stations to retrieve and modify MIB objects.
SNMP v.3 uses a more sophisticated authentication process that is separated into two parts. The first
part is to maintain a list of users and their attributes that are allowed to act as SNMP managers. The
second part describes what each user on that list can do as an SNMP manager.
The switch allows groups of users to be listed and configured with a shared set of privileges. The
SNMP version may also be set for a listed group of SNMP managers. Thus, you may create a group of
SNMP managers that are allowed to view read-only information or receive traps using SNMP v.1 while
assigning a higher level of security to another group, granting read/write privileges using SNMP v.3.
Using SNMP v.3 individual users or groups of SNMP managers can be allowed to perform or be
restricted from performing specific SNMP management functions. The functions allowed or restricted
are defined using the Object Identifier (OID) associated with a specific MIB. An additional layer of
security is available for SNMP v.3 in that SNMP messages may be encrypted.
Traps
Traps are messages that alert network personnel of events that occur on the switch. The events can be as
serious as a reboot (someone accidentally turned OFF the switch), or less serious like a port status
change. The switch generates traps and sends them to the trap recipient (or network manager). Typical
traps include trap messages for Authentication Failures and Topology Changes.
IP Address Assignment
Each switch must be assigned its own IP Address, which is used for communication with an SNMP
network manager or other TCP/IP application (for example BOOTP, TFTP). The switch's default IP
address is 0.0.0.0. You can change the default switch IP address to meet the specification of your
networking address scheme. The switch is also assigned a unique MAC address by the factory. This
MAC address cannot be changed, and can be found by entering the command "
show switch " into the
command line interface, as shown below.