Linksys SLM224G4S manual Multicast Igmp Snooping, Igmp Global, Vlan Igmp Settings

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Chapter 5

Configuration Using the Web-based Utility

Port Fast  Indicates if Fast Link is enabled on the port. If Fast Link mode is enabled for a port, the Port State is automatically placed in the Forwarding state when the port link is up. Fast Link optimizes the STP protocol convergence. STP convergence can take 30-60 seconds in large networks. The possible values are Enable, Auto, and Disable. The default is Disable.

Port State  Displays the current STP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are:

•Disabled  STP is currently disabled on the port. The port forwards traffic while learning MAC addresses.

•Blocking  The port is currently blocked and cannot forward traffic or learn MAC addresses.

•Listening  The port is in Listening mode. The port cannot forward traffic nor can it learn MAC addresses.

•Learning  The port is in Learning mode. The port cannot forward traffic, but can learn new MAC addresses.

•Forwarding  The port is in Forwarding mode. The port can forward traffic and learn new MAC addresses.

Speed  Displays the speed at which the port is operating.

Path Cost  Indicates the port contribution to the root path cost. The path cost is adjusted to a higher or lower value, and is used to forward traffic when a path being rerouted. The default value is 2000000 for a 10M port, 200000 for a 100M port, and 20000 for a 1G port or a LAG.

Default Path Cost  When selected the default path cost is implemented. The default is unselected.

Priority  Priority value of the port. This value influences the port choice when a bridge has two ports connected in a loop. The range of values is 0 -240. The default is 128.

Designated Bridge ID  Displays the bridge priority and the MAC Address of the designated bridge.

Designated Port ID  Displays the selected port’s priority and interface.

Designated Cost  Displays the cost of the port participating in the STP topology. Ports with a lower cost are less likely to be blocked if STP detects loops.

Forward Transitions  Displays the number of times the port has changed from the Blocking state to Forwarding state.

Click Update to update the screen with your changes.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Multicast

Multicast configuration options include IGMP Snooping, Bridge Multicast, and Bridge Multicast Forward All.

Multicast > IGMP Snooping

Multicast > IGMP Snooping

When IGMP Snooping is enabled globally, all IGMP packets are forwarded to the CPU. The CPU analyzes the incoming packets and determines:

•Which ports want to join which Multicast groups

•Which ports have Multicast routers generating IGMP queries

•Which routing protocols are forwarding packets and Multicast traffic

Ports requesting to join a specific Multicast group issue an IGMP report, specifying that Multicast group is accepting members. This results in the creation of the Multicast filtering database.

The Bridge Multicast Forward All screen contains two sections, IGMP Global and VLAN IGMP Settings. These sections and the fields they contain are described below.

IGMP Global

Enable IGMP Snooping  Select this option to enable IGMP Snooping on the device. IGMP Snooping can be enabled only if Bridge Multicast Filtering is enabled. The default is disabled (option not selected).

VLAN IGMP Settings

VLAN ID  Select the VLAN ID from the drop-down menu.

IGMP Status  Select this option to enable IGMP snooping on the VLAN. Default is disabled (option not selected).

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs

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Contents Port or 48-Port 10/100 + Icon Descriptions About This GuideAbout This Guide Online ResourcesTable of Contents Snmp Appendix B About Switch Stacking Appendix C GlossaryGigabit Ethernet Fiber Optic Cabling Appendix D Specifications Appendix G Contact InformationChapter IntroductionFront Panel Chapter Product OverviewProduct Overview Back PanelSLM248G4S Pre-Installation Considerations Chapter InstallationInstallation Placement OptionsHardware Installation Desktop PlacementRack-Mount Placement Uplinking the Switch Configuring Stacking ModeReplacing a Stacked Switch Connect port G1 on Unit 2 to port G2 on UnitConnect port G1 on Unit 3 to port G2 on Unit Using telnet Chapter Configuration Using Console InterfaceUsing the HyperTerminal Application Login screen appears. Proceed to the Login section belowSwitch Main Menu How to Use the Console InterfaceLogin System Configuration MenuManagement Settings User & Password SettingsSystem Information Security Settings IP ConfigurationNetwork Configuration File ManagementRestore System Default Settings Reboot SystemStack Configuration Port Status Port ConfigurationSystem Mode HelpSetup Summary Chapter Configuration Using Web-based UtilitySetup Device InformationDefault Gateway The IP address default 0.0.0.0 Setup ZoomSetup Network Settings DNS Server The IP address of your ISP’s server thatLocal Time Setup TimeIdentification Daylight SavingPort Management Setup Stack ManagementPort Management Port Settings Sntp ServersPort Configuration LAG Configuration Port Management Link AggregationGlobal Parameter Lacp screen contains fields for configuring Lacp LAGsPort Management Lacp Port PriorityVlan Management Create Vlan Vlan Management Port SettingsVlan Management Lacp Port TableVlan Management Port to Vlan Vlan Management Vlan to PortJoin Vlan to Port Statistics Statistics Rmon StatisticsLog Table Statistics Rmon HistoryRmon History Rmon History TableStatistics Rmon Alarms Add AlarmStatistics Port Utilization Statistics Rmon EventsStatistics Interface Statistics Interface Security 802.1x SettingsSecurity Ethernet-likeSetting Timer Security Port SecuritySecurity Management Access List Web IP FilteringSecurity Storm Control Security RadiusBroadcast Only Counts only Broadcast traffic CoS Default QoS CoS SettingsCoS Settings CoS Settings screen is used to enable or disable CoSQoS Queue Settings QoS Dscp SettingsQoS Bandwidth QoS Basic Mode Spanning TreeSpanning Tree STP Status Bridge Settings Spanning Tree STP Port SettingsGlobal Setting Spanning Tree Global STPMulticast Igmp Snooping Vlan Igmp SettingsMulticast Igmp GlobalMulticast Bridge Multicast Multicast Bridge Multicast Forward AllSnmp Global Parameters Snmp ViewsSnmp Group Profile Snmp Group MembershipUser Name Provides a user-defined local user list Snmp Communities Base Table Snmp Notification FilterSnmp Notification Recipient Advanced TableUser Authentication AdminAdmin User Authentication Local User EditSecure The entry is defined for locked ports Admin Static AddressAdmin Dynamic Address Clear Table If selected, this clears the MAC Address tableAdmin Port Mirroring Admin Cable TestQuery Admin Save Configuration Admin Firmware Upgrade Admin RebootAdmin Factory Default Admin Logging Admin Server LogsAdmin Memory Logs Admin Flash Logs LogoutGigabit Ethernet Appendix aAppendix a About Gigabit Ethernet Fiber Optic Cabling Fiber Optic CablingAppendix B Appendix B About Switch StackingAbout Switch Stacking Stack Building Quick StartUnit IDs Advanced StackingStack Resiliency Unit ID AllocationStack Units Startup Process Master DiscoveryMaster Election Stacking Examples Unit and Port ConfigurationUser Controls Replacing a Failed Stack Member in a Running StackStack Master Failure and Replacement Subgroup Contains Both Master Unit and Backup Master Unit Splitting a StackMerging Two Stacks Both Stacks Kept Running During InsertionStacking Cable Failure Inserting Too Many UnitsAppendix C Appendix C GlossaryGlossary Glossary Packet a unit of data sent over a network Mail protocol on the InternetAppendix C Appendix D Specifications SpecificationsAppendix D Supports up to 9K byte frames DimensionsHOL Blocking Head of line blocking prevention 802.3 10BASE-T EthernetObtaining Warranty Service Warranty InformationLimited Warranty Appendix EWarranty Information Technical SupportAppendix F Regulatory InformationRegulatory Information Appendix F Norsk Norwegian Miljøinformasjon for kunder i EU Appendix F Appendix G Contact Information

SLM224G4S specifications

The Linksys SLM224G4S is a sophisticated Layer 2 managed switch designed for businesses and institutions that demand high performance, reliability, and advanced networking features. This model stands out due to its blend of robustness and manageability, making it ideal for expanding networks.

One of the primary features of the SLM224G4S is its 24 Gigabit Ethernet ports, allowing for high-speed data transfers essential for bandwidth-intensive applications. Supporting auto-negotiation, these ports can detect the capabilities of connected devices and configure themselves accordingly, ensuring optimal performance without manual intervention. With four additional shared Gigabit SFP (Small Form-factor Pluggable) ports, this switch provides flexibility in network design and enhances scalability.

The SLM224G4S supports VLAN (Virtual Local Area Network) capabilities, which can segment network traffic to improve security and performance. This is particularly useful in environments where different departments or teams require distinct network segments for operational efficiency. By implementing VLANs, organizations can enhance their network management while isolating sensitive information from potential threats.

Quality of Service (QoS) is another critical technology integrated into the SLM224G4S. It prioritizes network traffic, ensuring that critical applications receive the bandwidth they need for optimal performance. This is particularly important for VoIP and video conferencing applications, where latency and jitter can significantly impact user experience.

The switch also features advanced Layer 2 management functionalities, including SNMP (Simple Network Management Protocol), allowing IT administrators to monitor network performance and quickly troubleshoot issues. The embedded web-based management interface makes configuration straightforward, enabling quick adjustments to settings without deep networking knowledge.

Security is a paramount consideration in today’s networking landscape. The SLM224G4S provides robust security features, including port security that limits the number of MAC addresses allowed on a port, reducing the risk of unauthorized access. Moreover, it supports802.1X port-based authentication, ensuring that only authenticated devices can connect to the network.

In summary, the Linksys SLM224G4S managed switch boasts features such as 24 Gigabit Ethernet ports, VLAN support, QoS, SNMP management, and advanced security protocols. These characteristics make it an excellent choice for businesses looking to enhance their network's performance, safety, and reliability, paving the way for seamless connectivity in today’s digital age.
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