Dell X1000 Networking X-Series Switches User Guide - Page 279

SNMP Global Parameters

Page 279 highlights

FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User Guide\Dell_Astute_Network_Admin_SNMP.fm • SNMPv3 - Users and Groups SNMP v3 works with users instead of communities. The users belong to groups that have access rights assigned to them. Users are defined in the User Security Model pages SNMPv3 provides two security mechanisms: - Authentication - The switch checks that the SNMP user is an authorized system administrator. This is done for each and every frame. - Privacy - SNMP frames can carry encrypted data. These mechanisms can be combined to provide three levels of security: - No security - Authentication - Authentication and Privacy. Note that for both authentication and privacy to be enabled, two groups with the same name, one with authentication and one with privacy, must be created. A group is a label for a combination of attributes that determines whether members have read, write, and/or notify privileges. Users can be associated with a group. A group is operational only when it is associated with an SNMP user. SNMP Global Parameters The Engine ID is used by SNMPv3 entities to uniquely identify themselves. Both a remote and local Engine ID can be specified. An SNMP agent is considered an authoritative SNMP engine. This means that the agent responds to incoming messages (Get, GetNext, GetBulk, Set), and sends trap messages to a manager. The agent's local information is encapsulated in fields in the message. Each SNMP agent maintains local information that is used in SNMPv3 message exchanges (not relevant for SNMPv1 or SNMPv2). The default SNMP Engine ID is comprised of the enterprise number and the default MAC address. The SNMP engine ID must be unique for the administrative domain, so that no two devices in a network have the same engine ID. DELL CONFIDENTIAL - PRELIMINARY 8/9/16 - FOR PROOF ONLY Network Administration: SNMP Monitoring 279

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Network Administration: SNMP Monitoring
279
FILE LOCATION:
C:\Users\gina\Desktop\Checkout_new\Dell Astute\User
Guide\Dell_Astute_Network_Admin_SNMP.fm
DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY
SNMPv3
— Users and Groups
SNMP v3 works with users instead of communities. The users belong to
groups that have access rights assigned to them. Users are defined in the
User Security Model
pages
SNMPv3 provides two security mechanisms:
Authentication
— The switch checks that the SNMP user is an
authorized system administrator. This is done for each and every
frame.
Privacy
— SNMP frames can carry encrypted data.
These mechanisms can be combined to provide three levels of security:
No security
Authentication
Authentication and Privacy. Note that for both authentication and
privacy to be enabled, two groups with the same name, one with
authentication and one with privacy, must be created.
A group is a label for a combination of attributes that determines whether
members have read, write, and/or notify privileges. Users can be associated
with a group. A group is operational only when it is associated with an
SNMP user.
SNMP Global Parameters
The Engine ID is used by SNMPv3 entities to uniquely identify themselves.
Both a remote and local Engine ID can be specified.
An SNMP agent is considered an authoritative SNMP engine. This means
that the agent responds to incoming messages (Get, GetNext, GetBulk, Set),
and sends trap messages to a manager. The agent's local information is
encapsulated in fields in the message.
Each SNMP agent maintains local information that is used in SNMPv3
message exchanges (not relevant for SNMPv1 or SNMPv2). The default
SNMP Engine ID is comprised of the enterprise number and the default
MAC address. The SNMP engine ID must be unique for the administrative
domain, so that no two devices in a network have the same engine ID.