¾ Multicast Overview | TP-Link TL-SG2008 specs

Chapter 8 Multicast

¾Multicast Overview

In the network, packets are sent in three modes: unicast, broadcast and multicast. In unicast, the source server sends separate copy information to each receiver. When a large number of users require this information, the server must send many pieces of information with the same content to the users. Therefore, large bandwidth will be occupied. In broadcast, the system transmits information to all users in a network. Any user in the network can receive the information, no matter the information is needed or not.

Point-to-multipoint multimedia business, such as video conferences and VoD (video-on-demand), plays an important part in the information transmission field. Suppose a point to multi-point service is required, unicast is suitable for networks with sparsely users, whereas broadcast is suitable for networks with densely distributed users. When the number of users requiring this information is not certain, unicast and broadcast deliver a low efficiency. Multicast solves this problem. It can deliver a high efficiency to send data in the point to multi-point service, which can save large bandwidth and reduce the network load. In multicast, the packets are transmitted in the following way as shown in Figure 8-1.

Figure 8-1 Information transmission in the multicast mode

Features of multicast:

1.The number of receivers is not certain. Usually point-to-multipoint transmission is needed;

2.Multiple users receiving the same information form a multicast group. The multicast information sender just need to send the information to the network device once;

3.Each user can join and leave the multicast group at any time;

4.Real time is highly demanded and certain packets drop is allowed.

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TP-Link TL-SG2008 manual ¾ Multicast Overview

Contents

REV1.0.0 1910010984 TL-SG2008 Copyright & Trademarks FCC Statement Safety Information Contents Loopback Detection 100 Rmon Package Contents Overview of This Guide About this GuideIntended Readers Conventions System Chapter Introduction Appendix a Specifications Appearance Description Overview of the SwitchMain Features Introduction ¾ LEDs Name Status Indication Rear Panel Configuration Login to the SwitchLogin Return to Contents ¾ Port Status SystemSystem Info System Summary ¾ Bandwidth Utilization Device Description¾ Port Info Status Displays the connection status of the port ¾ Time Info System Time¾ Device Description Daylight Saving Time System IP Following entries are displayed on this screen System IP User Table ¾ IP ConfigUser Management User Status User ConfigPassword Type in a password for users’ login ¾ User Info System Tools Config RestoreConfirm Password Password Display Mode User ID, Name, Access Level and status Operation ¾ Config Backup Config BackupFirmware Upgrade System Reset System Reboot Access Control Access Security Port SSL ConfigIP Address & Mask MAC Address Key File ¾ Global Config¾ Certificate Download ¾ Key Download Select Enable/Disable SSH function SSH Config ¾ Network Requirements ¾ Configuration ProcedureDownload Application Example 2 for SSH Page Page Return to Contents Port SwitchingPort Config Mode Port MirrorGroup Mirroring Egress NumberIngress ¾ Port Security Port Security Port Isolation Port Isolation Forward Portlist Display the forwardlist ¾ Port Isolation ConfigLoopback Detection ¾ Port Isolation List LAG Operation Mode ¾ LAG Table LAG Table Member Static LAGGroup Number LAG will delete this LAG Lacp Config Port Priority ¾ Lacp ConfigAdmin Key Packets Tx Traffic MonitorTraffic Summary Packets Rx Received Traffic StatisticsRefresh Rate ¾ Statistics Port MAC AddressBound MAC address Way ¾ Search Option Address Table Displays the corresponding Vlan ID of the MAC address MAC Address Displays the MAC address learned by the switchStatic Address ¾ Address Table ¾ Static Address Table Dynamic Address Bind ¾ Aging Config¾ Dynamic Address Table ¾ Create Filtering Address Filtering Address ¾ Dhcp Working Principle Dhcp Filtering¾ Filtering Address Table 17 Network diagram of Dhcp ¾ Dhcp Cheating Attack 19 Dhcp Cheating Attack Implementation Procedure ¾ Trusted Port ¾ Dhcp FilteringDhcp Filtering Vlan ¾ Link Types of ports 802.1Q Vlan ¾ Pvid Vlan Config Tagged Ports Give a name to the Vlan for identificationName Untagged Ports Tagged ¾ Network DiagramApplication Example for 802.1Q Vlan Untagged Step Operation Description Required. On VLAN→802.1Q VLAN→VLAN Config page, configureRequired. On VLAN→802.1Q VLAN→VLAN Config page, create a ¾ STP Elements Spanning Tree ¾ STP Generation ¾ STP Timers¾ Bpdu Comparing Principle in STP mode Tips ： Step Operation ¾ Mstp Elements ¾ Rstp Elements ¾ Port Roles ¾ Port States STP Config STP Config Max Age Forward DelayVersion Hello Time STP Summary Port Config Edge Port PriorityExtPath IntPath Mstp Instance Region ConfigInstance Config ¾ Region Config ¾ VLAN-Instance Mapping ¾ Instance TableInstance Clear Path Cost Instance Port ConfigInstance ID Port Protect STP Security ¾ Bpdu Filter ¾ Root Protect¾ TC Protect ¾ Bpdu Protect TC Protect 11 TC Protect Application Example for STP Function Operation Description On Spanning Tree→STP Config→STP ConfigOn Spanning Tree→MSTP Instance→Region On Spanning Tree→MSTP Instance→Instance On Spanning Tree→STP Config→Port Config ¾ Suggestion for Configuration ¾ Multicast Overview Multicast ¾ Multicast Address Table ¾ Multicast Address ¾ Igmp Snooping Process Igmp SnoopingMulticast IP Port ¾ Igmp Snooping ¾ Igmp Snooping Fundamentals Snooping Config Description Displays Igmp Snooping status Member ¾ Igmp Snooping Status Fast Leave Igmp Snooping Multicast Vlan ¾ Multicast Vlan Multicast→IGMP Snooping→Multicast Vlan On the Multicast→IGMP Snooping→Snooping ConfigVlan Multicast IP Table Snooping→Port ConfigSnooping→Snooping Config Multicast IP Static Multicast IP ¾ Static Multicast IP Table Multicast Filter¾ Create Static Multicast Port Filter IP-Range Bound IP-Range ID ¾ Port Filter ConfigAction Mode Filter Multicast→Multicast Filter→Port Filter Port Displays the port number of the switch Query PacketPacket Statistics Multicast→Multicast Filter→IP-Range Return to Contents ¾ QoS ¾ Priority ModeQoS 802.1Q frame ¾ Schedule Mode SP-Mode Displays the LAG number which the port belongs to ¾ Port Priority ConfigDiffServ Port Priority ¾ Priority Level ¾ 802.1P Priority Config2 802.1P/CoS Mapping Required. On QoS→DiffServ→Port Priority Mapping Configuration Procedure Step Operation Description¾ Dscp Priority Config Dscp Priority Priority Level Schedule Mode¾ Priority Level It ranges from 0 to Rate Limit ¾ Rate Limit ConfigBandwidth Control Egress Ratebps Storm ControlIngress Rate bps Mulitcast Rate Voice VlanBroadcast Rate Bps ¾ Port Voice Vlan Mode Packet Type Processing Mode Global Config¾ Security Mode of Voice Vlan OUI address is aging out Port ModeEnter the Vlan ID of the voice Vlan Aging Time OUI Config Required. On QoS→Voice VLAN→Global Config Required. On VLAN→802.1Q VLAN→VLAN ConfigOptional. On QoS→Voice VLAN→OUI Config page, you Required. On QoS→Voice VLAN→Port Config ACL Create ACL ConfigACL ACL Summary Rule ID MAC ACL¾ Create ACL ¾ Create MAC ACL Mask Standard-IP ACLExtend-IP ACL ¾ Create Standard-IP ACL IP Protocol Policy ConfigPolicy Summary ¾ Create Extend-IP ACL Displays the ID of the ACL contained in the policy Policy CreateAction Create Index Displays the index of the policy ¾ Policy Bind Table Policy BindingBinding Table ¾ Create Action Direction Displays the binding direction Port BindingVlan Binding Interface ¾ VLAN-Bind Table ¾ VLAN-Bind ConfigApplication Example for ACL Enter the ID of the Vlan you want to bind On ACL→ACL Config→Standard-IP ACL page, select ACL On ACL→ACL Config→ACL Create page, create ACL Limit2 ¾ Snmp Versions Snmp¾ Snmp Overview ¾ Snmp Management Frame ¾ MIB Introduction ¾ Snmp Configuration Outline Snmp Config, Notification and Rmon Snmp Config View Type Snmp ViewSnmp Group MIB Object ID Snmp Group Following entries are displayed on this screen ¾ Group Config ¾ Group Table Snmp User Privacy Password Auth ModeAuth Password Privacy Mode MIB View AccessSnmp Community Community Name On the SNMP→SNMP Config→SNMP Required. On the SNMP→SNMP Config→GlobalRequired. On the SNMP→SNMP Config→SNMP Config→Global Config page, enable Snmp UDP Port Notification¾ Create Notification IP Address ¾ Notification Table TimeoutRmon Retry ¾ History Control Table History ControlRmon Group Function ¾ Event Table Event ConfigAlarm Config Rising Event VariableSample Type Rising Threshold 131 CPU Monitor MaintenanceSystem Monitor Level Description 12.2 LogMemory Monitor Time Log TableLevel Description Debugging ¾ Log Info Log File ¾ Local Log ConfigLocal Log Log Buffer Host IP Backup LogRemote Log ¾ Log Host ¾ Cable Test Device Diagnostics¾ Backup Log Cable Test Loopback Network Diagnostics Tracert ¾ Ping ConfigPing 10 Tracert Following entries are displayed on this screen ¾ Tracert Config Appendix a Specifications Configure TCP/IP component Appendix B Configuring the PCs Now Appendix C Glossary Igmp Query Multicast SwitchingRemote Authentication Dial-in User Service Radius Igmp Snooping Spanning Tree Algorithm STA Rapid Spanning Tree Protocol RstpSimple Network Management Protocol Snmp Simple Network Time Protocol Sntp