Linksys PC22604 Snmp and Rmon Management, Snmp Agent and MIB-2 RFC1213, Rmon Groups Supported

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ProConnect II® Series

SNMP and RMON Management

Overview

This section describes the Switch’s Simple Network Management Protocol (SNMP) and Remote Monitoring (RMON) capabilities.

RMON is an abbreviation for the Remote Monitoring MIB (Management Information Base). RMON is a system defined by the Internet Engineering Task Force (IETF) document RFC 1757, which defines how networks can be monitored remotely. RMONs typically consist of two components: an RMON probe and a management workstation:

The RMON probe is an intelligent device or software agent that continually collects statistics about a LAN segment or VLAN. The RMON probe trans- fers the collected data to a management workstation on request or when a pre-defined threshold is reached.

The management workstation collects the statistics that the RMON probe gathers The workstation can reside on the same network as the probe, or it can have an in-band or out-of-band connection to the probe.

The Switch provides RMON capabilities that allow network administrators to set parameters and view statistical counters defined in MIB-II, Bridge MIB, and RMON MIB. RMON activities are performed at a Network Management Station running an SNMP network management application with graphical user interface.

SNMP Agent and MIB-2 (RFC1213)

The SNMP Agent running on the switch manager CPU is responsible for:

Retrieving MIB counters from various layers of software modules according to the SNMP GET/GET NEXT frame messages.

Setting MIB variables according to the SNMP SET frame message.

Generating an SNMP TRAP frame message to the Network Management Station if the threshold of a certain MIB counter is reached or if other trap conditions (see next page) are met:

Layer 2 Management 4-Port Gigabit Ethernet Switch

Warm start

Cold start

Link up

Link down

Authentication failure

Rising alarm

Falling alarm

Topology change

MIB-2 defines a set of manageable objects in various layers of the TCP/IP protocol suites. MIB-2 covers all manageable objects from layer 1 to layer 4 and, as a result, is the major SNMP MIB supported by all vendors in the net- working industry. The Switch supports a complete implementation of SNMP Agent and MIB-2.

RMON MIB (RFC 1757) and Bridge MIB (RFC 1493)

The Switch provides hardware-based RMON counters in the switch chipset. The switch manager CPU polls these counters periodically to collect the sta- tistics in a format that complies with the RMON MIB definition.

RMON GROUPS SUPPORTED

The Switch supports the following RMON MIB groups defined in RFC1757:

RMON Statistics Group maintains utilization and error statistics for the switch port being monitored.

RMON History Group gathers and stores periodic statistical samples from the previous Statistics Group.

RMON Alarm Group allows a network administrator to define alarm thresholds for any MIB variable. An alarm can be associated with Low Threshold, High Threshold, or both. A trigger can trigger an alarm when the value of a specific MIB variable exceeds a threshold, falls below a thresh- old, or exceeds or falls below a threshold.

RMON Event Group allows a network administrator to define actions based on alarms. SNMP Traps are generated when RMON Alarms are trig- gered. The action taken in the Network Management Station depends on the specific network management application.

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Contents Layer 2 Management 4-Port Gigabit Ethernet Switch Copyright & Trademarks Table of Contents Default Vlan Introduction Snmp and Rmon Management 106RJ-45 Ports Getting to Know the SwitchLEDs Gigabit Expansion PortsFast Ethernet Considerations Installing the SwitchPositioning the Switch Full-Duplex ConsiderationsRack-Mounting the Switch Desk Top or Shelf Mounting the SwitchInstallation is complete Powering On and Resetting the SwitchInstalling the Gigabit Expansion Modules Switch ManagementUplinking the Switch Local Console ManagementLogging On to the Switch Configuring the SwitchAssigning an IP Address to the Switch Remote Console ManagementBasic Management Activities General Management ConfigurationChanging the System Name Changing the Contact Changing the Administration PasswordChanging the Location Changing the Guest Password Statistic CollectionRemote Http Login Reboot-on-ErrorRemote Telnet Login Returning to the Basic Management ScreenControl Setting the Line Speed LAN Port ConfigurationChanging the Speed and Flow Control Changing the Flow Control Console Port ConfigurationAdmin Control Displaying Physical Port AddressSelecting a Flow Control Method Specifying a Modem Setup StringChanging the Console Baud Rate Enabling or Disabling Modem Control OptionsSpecifying a Slip Address Enabling or Disabling SlipSpecifying a Slip Subnet Mask Switching Database Configuration Advanced Management ActivitiesObtaining a Vlan Perspective Default VlanVlan & Pvid Perspective Creating a New VlanAdding New Switch Ports Deleting a Vlan ID Viewing Vlan ActivitiesObtaining Additional Information Viewing Vlan SettingsSearching for MAC Addresses Scrolling Through DomainsAdding Ports Deleting PortsConfiguring Pvid IP Multicast Group PerspectivePort Perspective MAC Address PerspectivePer Port Vlan Activities Scrolling Through MAC Addresses Per Port StatisticsIP Networking Per Port MAC LimitARP Table Settings IP & RIP SettingsAdding Static ARP Table Entries Deleting Static ARP Table Entries Searching for ARP Table EntriesIcmp Routing TableVlan RIPDeleting Routing Table Entries Dhcp Gateway SettingsSearching for Routing Table Entries Servers DelayRelays Ping Settings Bridging Static Filtering Spanning Tree Protocol ConfigurationsSpanning Tree Functions Spanning Tree Port States Spanning Tree Path Costs Spanning Tree Port Priorities Snmp FunctionsProConnect II Series Stacking Basic Setting StackingProConnect II Series Other Protocols Port TrunkingSetting Quality of Service Parameters Setting Global Settings ProConnect II Series Specifying TCP/UDP Logical Port Settings User-Defined PortWell-Known Port Range PortSpecifying the QoS Vlan Priority Specifying the ToS Priority Selecting a QoS Profile Megabit ProfileGigabit Profiles Specifying the Port Configuration Selecting Rate Control Parameters Sending and Receiving Files Receiving Files via TftpSending Files via Tftp Receiving Files via Kermit Sending Files via KermitRmon MIB RFC 1757 and Bridge MIB RFC Snmp and Rmon ManagementSnmp Agent and MIB-2 RFC1213 Rmon Groups SupportedBridge Groups Supported AppendixAbout Fast Ethernet Fiber Optic Cabling About Gigabit EthernetTwisted-Pair Cabling Crimping Your Own Network Cables Glossary 115 117 119 121 123 125 127 Environmental SpecificationsLinksys Warranty Information Customerer SupportT p / / w w w. l i n k s y s . c o m

PC22604 specifications

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