GS-5220-Series User Manual
Table Of Contents
- 1. INTRODUCTION
- 2. INSTALLATION
- 3. SWITCH MANAGEMENT
- 4. WEB CONFIGURATION
- 4.1 Main Web Page
- 4.2 System
- 4.2.1 System Information
- 4.2.2 IP Configuration
- 4.2.3 IP Status
- 4.2.4 Users Configuration
- 4.2.5 Privilege Levels
- 4.2.6 NTP Configuration
- 4.2.7 Time Configuration
- 4.2.8 UPnP
- 4.2.9 DHCP Relay
- 4.2.10 DHCP Relay Statistics
- 4.2.11 CPU Load
- 4.2.12 System Log
- 4.2.13 Detailed Log
- 4.2.14 Remote Syslog
- 4.2.15 SMTP Configuration
- 4.2.16 Web Firmware Upgrade
- 4.2.17 TFTP Firmware Upgrade
- 4.2.18 Save Startup Config
- 4.2.19 Configuration Download
- 4.2.20 Configuration Upload
- 4.2.21 Configure Activate
- 4.2.22 Configure Delete
- 4.2.23 Image Select
- 4.2.24 Factory Default
- 4.2.25 System Reboot
- 4.3 Simple Network Management Protocol
- 4.4 Port Management
- 4.5 Link Aggregation
- 4.6 VLAN
- 4.7 Spanning Tree Protocol
- 4.8 Multicast
- 4.8.1 IGMP Snooping
- 4.8.2 Profile Table
- 4.8.3 Address Entry
- 4.8.4 IGMP Snooping Configuration
- 4.8.5 IGMP Snooping VLAN Configuration
- 4.8.6 IGMP Snooping Port Group Filtering
- 4.8.7 IGMP Snooping Status
- 4.8.8 IGMP Group Information
- 4.8.9 IGMPv3 Information
- 4.8.10 MLD Snooping Configuration
- 4.8.11 MLD Snooping VLAN Configuration
- 4.8.12 MLD Snooping Port Group Filtering
- 4.8.13 MLD Snooping Status
- 4.8.14 MLD Group Information
- 4.8.15 MLDv2 Information
- 4.8.16 MVR (Multicast VLAN Registration)
- 4.8.17 MVR Status
- 4.8.18 MVR Groups Information
- 4.8.19 MVR SFM Information
- 4.9 Quality of Service
- 4.9.1 Understanding QoS
- 4.9.2 Port Policing
- 4.9.3 Port Classification
- 4.9.4 Port Scheduler
- 4.9.5 Port Shaping
- 4.9.6 Port Tag Remarking
- 4.9.7 Port DSCP
- 4.9.8 DSCP-based QoS
- 4.9.9 DSCP Translation
- 4.9.10 DSCP Classification
- 4.9.11 QoS Control List
- 4.9.12 QCL Status
- 4.9.13 Storm Control Configuration
- 4.9.14 WRED
- 4.9.15 QoS Statistics
- 4.9.16 Voice VLAN Configuration
- 4.9.17 Voice VLAN OUI Table
- 4.10 Access Control Lists
- 4.11 Authentication
- 4.11.1 Understanding IEEE 802.1X Port-based Authentication
- 4.11.2 Authentication Configuration
- 4.11.3 Network Access Server Configuration
- 4.11.4 Network Access Overview
- 4.11.5 Network Access Statistics
- 4.11.6 RADIUS
- 4.11.7 TACACS+
- 4.11.8 RADIUS Overview
- 4.11.9 RADIUS Details
- 4.11.10 Windows Platform RADIUS Server Configuration
- 4.11.11 802.1X Client Configuration
- 4.12 Security
- 4.12.1 Port Limit Control
- 4.12.2 Access Management
- 4.12.3 Access Management Statistics
- 4.12.4 HTTPs
- 4.12.5 SSH
- 4.12.6 Port Security Status
- 4.12.7 Port Security Detail
- 4.12.8 DHCP Snooping
- 4.12.9 Snooping Table
- 4.12.10 IP Source Guard Configuration
- 4.12.11 IP Source Guard Static Table
- 4.12.12 ARP Inspection
- 4.12.13 ARP Inspection Static Table
- 4.12.14 Dynamic ARP Inspection Table
- 4.13 Address Table
- 4.14 LLDP
- 4.15 Network Diagnostics
- 4.16 Power over Ethernet
- 4.17 Loop Protection
- 4.18 RMON
- 4.19 ONVIF
- 5. SWITCH OPERATION
- 6. TROUBLESHOOTING
- APPENDIX A: Networking Connection
- APPENDIX B : GLOSSARY
User’s Manual of GS-5220 Ultra PoE & PoE+ Series
103
4.3 Simple Network Management Protocol
4.3.1 SNMP Overview
The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management
information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite.
SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network
growth.
An SNMP-managed network consists of three key components: Network management stations (NMSs), SNMP agents,
Management information base (MIB) and network-management protocol:
■ Network management stations (NMSs): Sometimes called consoles, these devices execute management applications
that monitor and control network elements. Physically, NMSs are usually engineering workstation-caliber computers with
fast CPUs, megapixel color displays, substantial memory, and abundant disk space. At least one NMS must be present in
each managed environment.
■ Agents: Agents are software modules that reside in network elements. They collect and store management information
such as the number of error packets received by a network element.
■ Management information base (MIB): A MIB is a collection of managed objects residing in a virtual information store.
Collections of related managed objects are defined in specific MIB modules.
■ Network-management protocol: A management protocol is used to convey management information between agents
and NMSs. SNMP is the Internet community's de facto standard management protocol.
SNMP Operations
SNMP itself is a simple request/response protocol. NMSs can send multiple requests without receiving a response.
■ Get -- Allows the NMS to retrieve an object instance from the agent.
■ Set -- Allows the NMS to set values for object instances within an agent.
■ Trap -- Used by the agent to asynchronously inform the NMS of some event. The SNMPv2 trap message is designed to
replace the SNMPv1 trap message.