Chapter 33 Access Control
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SNMP itself is a simple request/response protocol based on the manager/agent
model. The manager issues a request and the agent returns responses using the
following protocol operations:
33.3.1 SNMP v3 and Security
SNMP v3 enhances security for SNMP management. SNMP managers can be
required to authenticate with agents before conducting SNMP management
sessions.
Security can be further enhanced by encrypting the SNMP messages sent from the
managers. Encryption protects the contents of the SNMP messages. When the
contents of the SNMP messages are encrypted, only the intended recipients can
read them.
33.3.2 Supported MIBs
MIBs let administrators collect statistics and monitor status and performance.
The Switch supports the following MIBs:
• SNMP MIB II (RFC 1213)
• RFC 1157 SNMP v1
• RFC 1493 Bridge MIBs
• RFC 1643 Ethernet MIBs
• RFC 1155 SMI
• RFC 2674 SNMPv2, SNMPv2c
• RFC 1757 RMON
• SNMPv2, SNMPv2c or later version, compliant with RFC 2011 SNMPv2 MIB for
IP, RFC 2012 SNMPv2 MIB for TCP, RFC 2013 SNMPv2 MIB for UDP
Table 96
SNMP Commands
COMMAND
DESCRIPTION
Get
Allows the manager to retrieve an object variable from the agent.
GetNext
Allows the manager to retrieve the next object variable from a table or list
within an agent. In SNMPv1, when a manager wants to retrieve all
elements of a table from an agent, it initiates a Get operation, followed by a
series of GetNext operations.
Set
Allows the manager to set values for object variables within an agent.
Trap
Used by the agent to inform the manager of some events.
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Страница 231: ...Chapter 26 IP Source Guard MES 3528 User s Guide 231 Figure 120 DHCP Snooping ...
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Страница 257: ...257 PART IV IP Application Static Route 259 Differentiated Services 263 DHCP 267 ...
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Страница 284: ...Chapter 32 Maintenance MES 3528 User s Guide 284 ...
Страница 306: ...Chapter 33 Access Control MES 3528 User s Guide 306 ...
Страница 312: ...Chapter 35 Syslog MES 3528 User s Guide 312 ...
Страница 320: ...Chapter 36 Cluster Management MES 3528 User s Guide 320 ...
Страница 324: ...Chapter 37 MAC Table MES 3528 User s Guide 324 ...
Страница 329: ...329 PART VI Troubleshooting Product Specifications Troubleshooting 331 Product Specifications 335 ...
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Страница 343: ...343 PART VII Appendices and Index Changing a Fuse 345 Common Services 347 Legal Information 351 Index 355 ...
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Страница 346: ...Appendix A Changing a Fuse MES 3528 User s Guide 346 ...
Страница 354: ...Appendix C Legal Information MES 3528 User s Guide 354 ...
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