Linksys SRW224G4, SRW248G4, SRW2048 Statistics Rmon Alarm, Alarm Entry Indicates a specific alarm

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Chapter 5

Advanced Configuration

Undersize Packets  Displays the number of undersized packets (less than 64 octets) received on the interface since the device was last refreshed.

Oversize Packets  Displays the number of oversized packets (over 1518 octets) received on the interface since the device was last refreshed.

Fragments  Displays the number of fragments (packets with less than 64 octets, excluding framing bits, but including FCS octets) received on the interface since the device was last refreshed.

Jabbers  Displays the total number of received packets that were longer than 1518 octets. This number excludes frame bits, but includes FCS octets that had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral octet (Alignment Error) number. The field range to detect jabbers is 20–150ms.

Collisions  Displays the number of collisions received on the interface since the device was last refreshed.

Utilization  Displays the percentage of the interface utilized.

Statistics > RMON Alarm

The RMON Alarm screen contains fields for setting network alarms. Network alarms occur when a network problem, or event, is detected. Rising and falling thresholds generate events.

Statistics > RMON Alarm

Alarm Entry  Indicates a specific alarm.

Source Interface  Displays the interface for which RMON statistics are displayed. The possible field values are:

•• Port  Displays the RMON statistics for the selected port.

•• LAG  Displays the RMON statistics for the selected LAG.

Counter Name  Displays the selected MIB variable.

Sample Type  Defines the sampling method for the selected variable and comparing the value against the thresholds. The possible field values are:

•• Absolute  Compares the values directly with the thresholds at the end of the sampling interval.

•• Delta  Subtracts the last sampled value from the current value. The difference in the values is compared to the threshold.

Rising Threshold  Displays the rising counter value that triggers the rising threshold alarm. The rising threshold is presented on top of the graph bars. Each monitored variable is designated a color.

Rising Event  Displays the mechanism in which the alarms are reported. The possible field values are:

•• LOG  Indicates there is not a saving mechanism for either the device or in the management system. If the device is not reset, the entry remains in the Log Table.

•• TRAP  Indicates that an SNMP trap is generated, and sent via the Trap mechanism. The Trap can also be saved using the Trap mechanism.

•• Both  Indicates that both the Log and Trap mechanism are used to report alarms.

Falling Threshold  Displays the falling counter value that triggers the falling threshold alarm. The falling threshold is graphically presented on top of the graph bars. Each monitored variable is designated a color.

Falling Event  Displays the mechanism in which the alarms are reported. The possible field values are:

•• LOG  Indicates there is not a saving mechanism for either the device or in the management system. If the device is not reset, the entry remains in the Log Table.

•• TRAP  Indicates that a SNMP trap is generated, and sent via the Trap mechanism. The Trap can also be saved using the Trap mechanism.

•• Both  Indicates that both the Log and Trap mechanism are used to report alarms.

Startup Alarm  Displays the trigger that activates the alarm generation. Rising is defined by crossing the threshold from a low-value threshold to a higher-value threshold.

Interval  Defines the alarm interval time in seconds.

Owner  Displays the device or user that defined the alarm.

Use the Add to List button to add the RMON Alarms Table entry.

The Alarm Table area contains the following additional field:

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Contents WebView Switches Icon Descriptions About This GuideAbout This Guide Online ResourcesTable of Contents Advanced Configuration Security Radius Security TACACS+ Security 802.1x Settings Appendix D Glossary Appendix B Windows HelpAppendix H Software License Agreement Introduction ChapterChapter Introduction SRW2048 Chapter Product OverviewProduct Overview SRW2024 Product OverviewSRW2016 SRW248G4 SRW224G4 Refer to Configuration Using Placement Options Connecting the SwitchBefore You Install the Switch OverviewHardware Installation Configuring the SwitchChapter Configuration Using Console Interface Connecting to the Switch through a Telnet SessionSwitch Main Menu System Configuration MenuManagement Settings Telnet Configuration Username & Password Settings IP Configuration Http Network Configuration Port Status File ManagementPort Configuration HelpAccessing the Web-based Utility Chapter Advanced ConfigurationAdvanced Configuration Setup SummarySystem Information Setup Network SettingsIP Configuration IdentificationLocal Time Setup TimeSet Time Daylight SavingSetup Green Ethernet Port Management Port SettingsPort Settings Port Configuration Port Management Link Aggregation Link Aggregation DetailSingle Vlan Port Management LacpVlan Management Create Vlan Vlan RangeVlan Management Port Setting Vlan Management Ports to VlanVlan Management Vlan to Ports Vlan Management GvrpStatistics Rmon Statistics Rmon History Statistics Rmon HistoryLog Table Statistics Rmon Alarm Alarm Entry Indicates a specific alarmAdd Event Statistics Rmon EventsStatistics Port Utilization Rmon Events LogStatistics 802.1x Statistics Statistics Gvrp StatisticsACL IP Based ACL ACL MAC Based ACL Security ACL Binding Security RadiusSecurity 802.1x Settings Security TACACS+802.1x Settings Setting Timer Security Port SecuritySecurity Multiple Hosts QoS QoS CoS SettingsSecurity Storm Control CoS Default QoS Queue SettingsQoS Dscp Settings QoS BandwidthAdvanced Mode Out of Profile Dscp QoS Basic ModeQoS Advanced Mode Spanning Tree Advanced Mode Policy NameAdvanced Mode New Class Map Spanning Tree Global STP Global SettingSpanning Tree STP Status Spanning Tree STP Port Settings Bridge SettingsSpanning Tree Rstp Port Settings Spanning Tree Mstp Properties Spanning Tree Mstp Instance Settings Multicast Igmp Snooping Multicast Bridge Multicast Multicast Bridge Multicast Forward AllSnmp Global Parameters Snmp ViewsSnmp Group Profile Snmp Group MembershipSnmp Communities Advanced Table Snmp Notification FilterBase Table Admin User Authentication Snmp Notification RecipientQuery Admin Jumbo FramesAdmin Static Address Admin Dynamic Address Admin LoggingAdmin Port Mirroring Admin Cable TestBackup Admin Save ConfigurationAdmin Firmware Upgrade Via TftpAdmin Server Logs Admin RebootAdmin Factory Defaults Admin Memory Logs Admin Flash LogsGigabit Ethernet Appendix aAppendix a About Gigabit Ethernet Fiber Optic Cabling Fiber Optic CablingShared Resources Appendix BAppendix B Windows Help Network Neighborhood/My Network PlacesAppendix C Appendix C Downloading using XmodemStartup Menu Procedures Downloading using Xmodem Glossary Appendix DAppendix D Glossary Glossary Smtp Simple Mail Transfer Protocol The standard e Appendix D Appendix E Appendix E SpecificationsSpecifications Specifications Environmental Security MAC Address port security† Obtaining Warranty Service Warranty InformationLimited Warranty Appendix FWarranty Information Technical SupportAppendix G Regulatory InformationRegulatory Information Appendix G Norsk Norwegian Miljøinformasjon for kunder i EU Appendix G Software in Linksys Products Appendix HAppendix H Software License Agreement Software LicensesSchedule Software License AgreementPreamble Appendix H END of Terms and Conditions END of Schedule Appendix H END of Schedule 3s Appendix Contact Information
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SRW2016, SRW224G4, SRW2024, SRW2048, SRW248G4 specifications

The Linksys SRW2048 is a robust Layer 2 managed switch that caters to the networking needs of small to medium-sized businesses. Designed with performance and reliability in mind, it provides features that ensure optimal network efficiency and security.

One of the standout features of the SRW2048 is its 48 10/100/1000 Mbps Gigabit Ethernet ports, enabling high-speed data transfer and seamless connectivity for various devices within the network. This makes it ideal for environments with heavy data traffic, ensuring minimal latency and high performance.

The SRW2048 also supports advanced Layer 2 management features, including VLAN (Virtual Local Area Network) support, which allows users to segment the network into smaller, manageable sections. This is crucial for improving security and performance, as it reduces unnecessary traffic and potential broadcast storms. With a VLAN configuration, businesses can group users and devices based on function or department, ensuring efficient communication within teams.

In addition to VLAN capabilities, the Linksys SRW2048 incorporates Quality of Service (QoS) features. This technology prioritizes critical network traffic, such as voice over IP (VoIP) and video conferencing, ensuring that these applications receive the bandwidth they require for optimal performance. This is particularly beneficial for businesses that rely on real-time communication tools.

The switch also enhances security through features such as IEEE 802.1X port security, which ensures that only authorized users can access the network. The SRW2048 supports access control lists (ACLs), allowing administrators to set specific permissions for users and devices, further tightening security.

Linksys has also equipped the SRW2048 with a user-friendly web-based management interface, simplifying the process of configuring and monitoring network performance. This accessible interface allows IT personnel to quickly identify issues, manage traffic, and configure settings without extensive training.

Another notable characteristic of the Linksys SRW2048 is its robust build quality and reliability. With a metal chassis and fanless design, it maintains a low acoustic footprint and ensures passive cooling, making it suitable for office environments.

Overall, the Linksys SRW2048 is a feature-rich managed switch that combines advanced networking technologies, efficient performance, and security features to meet the diverse needs of modern businesses. Its scalability, manageability, and robust construction make it a valuable addition to any network infrastructure.
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