SGSW-24x Series User Manual
Table Of Contents
- 1. INTRODUTION
- 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 IPv6 Configuration
- 4.2.4 Users Configuration
- 4.2.5 Users Privilege Levels
- 4.2.6 NTP Configuration
- 4.2.7 UPnP Configuration
- 4.2.8 DHCP Relay
- 4.2.9 DHCP Relay Statistics
- 4.2.10 CPU Load
- 4.2.11 System Log
- 4.2.12 Detailed Log
- 4.2.13 Remote Syslog
- 4.2.14 SMTP Configure
- 4.2.15 Web Firmware Upgrade
- 4.2.16 TFTP Firmware Upgrade
- 4.2.17 Configuration Backup
- 4.2.18 Configuration Upload
- 4.2.19 Factory Default
- 4.2.20 System Reboot
- 4.3 Simple Network Management Protocol
- 4.4 Port Management
- 4.5 Link Aggregation
- 4.6 VLAN
- 4.6.1 VLAN Overview
- 4.6.2 IEEE 802.1Q VLAN
- 4.6.3 VLAN Basic Information
- 4.6.4 VLAN Port Configuration
- 4.6.5 VLAN Membership Configuration
- 4.6.6 VLAN Membership Status for User Static
- 4.6.7 VLAN Port Status for User Static
- 4.6.8 Port Isolation Configuration
- 4.6.9 Private VLAN Membership Configuration
- 4.6.10 VLAN setting example:
- 4.7 Spanning Tree Protocol
- 4.8 Multicast
- 4.9 Quality of Service
- 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 Authentication Server Configuration
- 4.11.7 RADIUS Overview
- 4.11.8 RADIUS Details
- 4.11.9 Windows Platform RADIUS Server Configuration
- 4.11.10 802.1X 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 DHCP Snooping Statistics
- 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
- 4.13 Address Table
- 4.14 LLDP
- 4.15 Network Diagnostics
- 4.16 Power over Ethernet (SGSW-24040P / SGSW-24040P4 / SGSW-24040HP)
- 4.17 Stack
- 5. COMMAND LINE INTERFACE
- 6. Command Line Mode
- 6.1 System Command
- 6.2 Stack
- 6.3 IP Command
- 6.4 Port Management Command
- 6.5 MAC Address Table Command
- 6.6 VLAN Configuration Command
- 6.7 Private VLAN Configuration Command
- 6.8 Security Command
- Security Switch User Configuration
- Security Switch User Add
- Security Switch User Delete
- Security Switch Privilege Level Configuration
- Security Switch Privilege Level Group
- Security Switch Privilege Level Current
- Security Switch Auth Configuration
- Security Switch Auth Method
- Security Switch SSH Configuration
- Security Switch SSH Mode
- Security Switch HTTPs Configuration
- Security Switch HTTPs Mode
- Security Switch HTTPs Redirect
- Security Switch Access Configuration
- Security Switch Access Mode
- Security Switch Access Add
- Security Switch Access IPv6 Add
- Security Switch Access Delete
- Security Switch Access Lookup
- Security Switch Access Clear
- Security Switch Access Statistics
- Security Switch SNMP Configuration
- Security Switch SNMP Mode
- Security Switch SNMP Version
- Security Switch SNMP Read Community
- Security Switch SNMP Write Community
- Security Switch SNMP Trap Mode
- Security Switch SNMP Trap Version
- Security Switch SNMP Trap Community
- Security Switch SNMP Trap Destination
- Security Switch SNMP Trap IPv6 Destination
- Security Switch SNMP Trap Authentication Failure
- Security Switch SNMP Trap Link-up
- Security Switch SNMP Trap Inform Mode
- Security Switch SNMP Trap Inform Timeout
- Security Switch SNMP Trap Inform Retry Times
- Security Switch SNMP Trap Probe Security Engine ID
- Security Switch SNMP Trap Security Engine ID
- Security Switch SNMP Trap Security Name
- Security Switch SNMP Engine ID
- Security Switch SNMP Community Add
- Security Switch SNMP Community Delete
- Security Switch SNMP Community Lookup
- Security Switch SNMP User Add
- Security Switch SNMP User Delete
- Security Switch SNMP User Changekey
- Security Switch SNMP User Lookup
- Security Switch SNMP Group Add
- Security Switch SNMP Group Delete
- Security Switch SNMP Group Lookup
- Security Switch SNMP View Add
- Security Switch SNMP View Delete
- Security Switch SNMP View Lookup
- Security Switch SNMP Access Add
- Security Switch SNMP Access Delete
- Security Switch SNMP Access Lookup
- Security Network Psec Switch
- Security Network Psec Port
- Security Network Limit Configuration
- Security Network Limit Mode
- Security Network Limit Aging
- Security Network Limit Agetime
- Security Network Limit Port
- Security Network Limit Limit
- Security Network Limit Action
- Security Network Limit Reopen
- Security Network NAS Configuration
- Security Network NAS Mode
- Security Network NAS State
- Security Network NAS Reauthentication
- Security Network NAS ReauthPeriod
- Security Network NAS EapolTimeout
- Security Network NAS Agetime
- Security Network NAS Holdtime
- Security Network NAS RADIUS_QoS
- Security Network NAS RADIUS_VLAN
- Security Network NAS Guest_VLAN
- Security Network NAS Authenticate
- Security Network NAS Statistics
- Security Network ACL Configuration
- Security Network ACL Action
- Security Network ACL Policy
- Security Network ACL Rate
- Security Network ACL Add
- Security Network ACL Delete
- Security Network ACL Lookup
- Security Network ACL Clear
- Security Network ACL Status
- Security Network DHCP Relay Configuration
- Security Network DHCP Relay Mode
- Security Network DHCP Relay Server
- Security Network DHCP Relay Information Mode
- Security Network DHCP Relay Information Policy
- Security Network DHCP Relay Statistics
- Security Network DHCP Snooping Configuration
- Security Network DHCP Snooping Mode
- Security Network DHCP Snooping Port Mode
- Security Network DHCP Snooping Statistics
- Security Network IP Source Guard Configuration
- Security Network IP Source Guard Mode
- Security Network IP Source Guard Port Mode
- Security Network IP Source Guard Limit
- Security Network IP Source Guard Entry
- Security Network IP Source Guard Status
- Security Network ARP Inspection Configuration
- Security Network ARP Inspection Mode
- Security Network ARP Inspection Port Mode
- Security Network ARP Inspection Entry
- Security Network ARP Inspection Status
- Security AAA Configuration
- Security AAA Timeout
- Security AAA Deadtime
- Security AAA RADIUS
- Security AAA ACCT_RADIUS
- Security AAA TACACS+
- Security AAA Statistics
- 6.9 Spanning Tree Protocol Command
- STP Configuration
- STP Version
- STP Tx Hold
- STP MaxHops
- STP MaxAge
- STP FwdDelay
- STP CName
- STP BPDU Filter
- STP BPDU Guard
- STP Recovery
- STP Status
- STP MSTI Priority
- STP MSTI Map
- STP MSTI Add
- STP Port Configuration
- STP Port Mode
- STP Port Edge
- STP Port AutoEdge
- STP Port P2P
- STP Port RestrictedRole
- STP Port RestrictedTcn
- STP Port bpduGuard
- STP Port Statistic
- STP Port Mcheck
- STP MSTI Port Configuration
- STP MSTI Port Cost
- STP MSTI Port Priority
- 6.10 Multicast Configuration Command
- 6.11 Link Aggregation Command
- 6.12 Link Aggregation Control Protocol Command
- 6.13 LLDP Command
- 6.14 LLDPMED Command
- 6.15 Power over Ethernet Command
- 6.16 Quality of Service Command
- 6.17 Mirror Command
- 6.18 Configuration Command
- 6.19 Firmware Command
- 6.20 UPnP Command
- 6.21 MVR Command
- 6.22 Voice VLAN Command
- 6.23 SMTP Command
- 6.24 Show Command
- Show ACL Configuration
- Show Link Aggregation Configuration
- Show IGMP Configuration
- Show IP Configuration
- Show LACP Configuration
- Show LLDP Configuration
- Show MAC Configuration
- Show Mirror Configuration
- Show PoE Configuration
- Show Port Configuration
- Show Private VLAN Configuration
- Show QoS Configuration
- Show SNMP Configuration
- Show Stack Configuration
- Show System Configuration
- Show VLAN Configuration
- Show STP Configuration
- 7. SWITCH OPERATION
- 8. POWER OVER ETHERNET OVERVIEW
- 9. TROUBLESHOOTING
- APPENDIX A
- APPENDIX B : GLOSSARY
- EC Declaration of Conformity
User’s Manual of SGSW-24040 / 24240 Series
IGMP Versions 1 and 2
Multicast groups allow members to join or leave at any time. IGMP provides the method for members and multicast routers to
communicate when joining or leaving a multicast group.
IGMP version 1 is defined in RFC 1112. It has a fixed packet size and no optional data.
The format of an IGMP packet is shown below:
IGMP Message Format
Octets
0 8 16 31
Checksum
T
ype Response Time
Group Address (all zeros if this is a query)
The IGMP Type codes are shown below:
Type Meaning
Members
hip Query (if Group Address is 0.0.0.0)
0x11
S
pecific Group Membership Query (if Group Address is
Present)
0x11
0x16 Membership Report (version 2)
0x17 Leave a Group (version 2)
0x12 Membership Report (version 1)
IGMP packets enable multicast routers to keep track of the membership of multicast groups, on their respective sub networks.
The following outlines what is communicated between a multicast router and a multicast group member using IGMP.
A host sends an IGMP “report” to join a group
A host will never send a report when it wants to leave a group (for version 1).
A host will send a “leave” report when it wants to leave a group (for version 2).
Multicast routers send IGMP queries (to the all-hosts group address: 224.0.0.1) periodically to see whether any group members
exist on their sub networks. If there is no response from a particular group, the router assumes that there are no group members
on the network.
The Time-to-Live (TTL) field of query messages is set to 1 so that the queries will not be forwarded to other sub networks.
IGMP version 2 introduces some enhancements such as a method to elect a multicast queried for each LAN, an explicit leave
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