Cabletron Systems CSX400, CSX200 manual Subnet Mask, Local Segment, Target Segment, Hop Count Limit

Page 106

Bridging

Subnet Mask

A subnet mask is used by a device to determine whether a destination address exists within its own subnetwork (logical division of the network by router or gateway) and can be reached directly, or whether it is unknown and therefore must be delivered to a router (as speciÞed by the deviceÕs IP routing table or default gateway address).

A subnet mask should be set at the device if it will issue SNMP traps in a routed environment, so that the trap messages it generates will be routed correctly.

A subnet mask acts as a Þlter for destination IP addresses. It is a 32-bit quantity in which all bits that correspond to the network portion (both site and subnet identifying bits) of the deviceÕs IP address are set to 1, and all bits that correspond to the host portion are set to 0.

The device will logically AND a destination trap IP address with the subnet mask to determine which portion of the address identiÞes the network/subnetwork. The device then compares the result on a bit-to-bit basis with the network identifying bits in its own IP address. If the network portions match, the bridging device transmits the trap onto its subnetwork. If they do not match, the device transmits the trap through a router or gateway.

This Þeld can only be edited (with the correct security access) via Local Management for the device (or the MIBTools utility). Refer to the appropriate device-speciÞc UserÕs Guide for more information.

MAC Address

This Þeld displays the Media Access Control (MAC) layer address which identiÞes the ports/interfaces of the bridging device on a network. This six-byte address is set at the factory and is unique to each interface. Each byte is identiÞed in bit order starting with the most signiÞcant bit. You cannot conÞgure this Þeld.

The following Þelds apply to the Source Route ConÞguration window:

Local Segment

This Þeld displays the unique segment number that identiÞes the segment attached to the selected interface (either of the Token Ring or FDDI interfaces). The bridge adds the Local Segment number to the routing information Þeld of source route discovery frames. Valid values range from 0 to 4095.

Target Segment

This Þeld displays the unique segment number of the target segment that the source routed frame will be forwarded to. Valid values range from 0 to 4095.

Hop Count Limit

The maximum number of routing descriptors (i.e., bridge hops) allowed for an All Routes Explorer or a Spanning Tree Explorer frame received by the device. This will reduce the unnecessary propagation of explorer frames through the network.

4-60

Source Route Configuration

Page 105 Page 107
Image 106
Page 105 Page 107
Contents CSX200 and CSX400 User’s Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Bridging Vii Index Token Ring Physical Status FieldsIntroduction Using the CSX 200 and CSX400 User’s Guide HSIM-W6 and HSIM-W84Related Manuals Common Window Fields Software ConventionsDevice Name Location Using the MouseIP Address MAC AddressUsing Window Buttons Getting Help Using On-line HelpGetting Help from the Cabletron Systems Global Call Center CSX200 and CSX400 Firmware CSX200 and 400 Chassis View Viewing Chassis Information CSX200 and CSX400 Chassis View WindowsFront Panel Information Time Menu StructureDate Device Menu Port Status MenuHelp Menu Utilities MenuPort Menus Selecting a Port Status View CSX200/400 Port Status DisplaysStatus Load Chassis Manager Window Port Status Color CodesViewing Hardware Types Device TypeManaging the Device Viewing the Port DescriptionUsing the Find Source Address Feature Viewing I/F Summary InformationIndex DescriptionInterface Performance Statistics/Bar Graphs Physical StatusLogical Status Raw CountsRate Viewing Interface Detail Detail Interface StatisticsUnicast ErrorAddress Non-UnicastPackets Transmitted Transmit only Enabling and Disabling PortsMaking Sense of Detail Statistics CSX200 and 400 Chassis View CSX200 and 400 Chassis View Managing the Device CSX200 and CSX400 WAN Configuration About the CSX200 SeriesAbout the CSX400 WAN RedundancyCSX WPIMs WPIM-DDSEIA-RS449 WAN Logical View WAN Logical View WindowChanging WAN Logical Settings WAN Logical View Window FieldsCSX200 and CSX400 WAN Configuration CSX200 and CSX400 WAN Configuration WAN Logical View Bridging Bridging BasicsAbout Transparent Bridging About Source Route BridgingBridging About Source Route-Transparent Bridges About Source Route-Translational BridgesBridging Viewing and Managing Bridging Interfaces Bridging Bridge Status Window Bridge Status Window Information FieldsUp Time Bridge State on InterfaceInterface Type Accessing Other Options from the Bridge Status WindowBridge Address Bridging Bridging Bridging Enabling and Disabling Individual Interfaces Enabling and Disabling BridgingFrom the Bridge Status window Performance Graphs Enabling and Disabling All Installed InterfacesBridge Statistics From the Chassis View windowFrom the Bridge Status window Frames Forwarded Green Bridge Performance Graph Window FieldsFiltered Magenta Configuring the Bridge Performance Graphs Errors RedXmitted Blue Bridge Detail Breakdown WindowFrames Forwarded FilteredForwarded to XmittedBridge Port Detail Breakdown Window Forwarded fromInterface Statistics Window I/F Statistics WindowStatistics Window Fields Packets Received Csmacd Statistics WindowUnknown Protocol Transmit Queue SizeReceive Errors AlignmentTransmission Errors Collision Errors PPP Link Statistics WindowBad Controls ErrorsBad Addresses Packets Too LongStatistics Dot5 Errors Statistics Window Line Errors Burst ErrorsToken Errors Internal ErrorsCongestion Errors Soft ErrorsSource Route Statistics Specif. Routed Bridge Source Routing Window FieldsReceived Frames All Paths ExplTransmitted Frames DiscardsBridge Spanning Tree Hop Cnt. ExceededBridge Level Fields Configuring the Bridge Spanning Tree WindowBridge Priority Root Cost Root BridgeRoot Port Bridge Port Level Fields Designated Root Path CostDesignated Cost Designated BridgeChanging Bridge Priority Changing Bridge Spanning Tree ParametersChanging the Spanning Tree Algorithm Protocol Type Changing Hello Time Changing Forwarding Delay TimeChanging Max Age Time Changing Port Priority Filtering DatabaseChanging Path Cost Bridging From the Bridge Status window Number Filtering Database Window FieldsList CapacitySource Port Configuring the Filtering DatabaseAging Time Receive PortAltering the Aging Time Changing the Type of EntryChanging the Port Filtering Action Changing the Receive PortAdding or Deleting Individual Entries Ethernet and Token Ring Special Filter Databases Clearing All Permanent, Static, or Dynamic EntriesEthernet Special Filter Database Window Token Ring Special Filter Database Window 13. Ethernet Special Filter Database WindowFile EnableSpecial Filter Database Window Fields Destination AddressDefining and Editing Filters in the Special Database This Changing the Receive Ports Setting the Port Filtering ActionChanging the Port Filtering Action Saving a Set of Filters to a File Enabling and Disabling a FilterClearing the Port Filtering Action Source Route Configuration Information on Source Routing 16. Source Route ConÞguration WindowSource Route Configuration Window Source Route Configuration FieldsTarget Segment Subnet MaskLocal Segment Hop Count LimitSpanning Tree Expl Bridge NumberSpanning Tree Mode Using the Find Source Address Feature Making and Setting ChangesPort Source Addresses Window Setting the Aging Time Duplex Modes Duplex Modes Window Fields Duplex Modes WindowInterface Setting the Duplex Mode Full DuplexStandard Mode Ethernet Port Configuration WindowFast Ethernet Port Configuration Port Type Current Operational ModeLink State Advertised Abilities Desired Operational ModeRemote Capabilities Setting the Desired Operational Mode for the FE-100TX Setting the Desired Operational Mode for the FE-100FXSonet Port Configuration SONET/SDH ConfigurationSonet SONET/SDH Statistics Window Bridging 24. The SONET/SDH Statistics Window Loss of Signal Loss of PointerErrored Seconds Loss of FrameSeverely Errored Framing Seconds Severely Errored SecondsCode Violations Configuring Broadcast Suppression Token Ring Bridge Mode Transparent Setting The Token Ring Bridge ModeDefining the Bridge Modes Source RoutingEthernet Port Physical Status Fields Using the Physical View WindowsEtwmim Ethernet Port Physical View Active PortEtwmim Token Ring Port Physical View Epim TypeRing Speed Token Ring Physical Status FieldsRing State FNB State Active MonitorUsing the Interface Configuration Window Defining the Bridge Method 29. Interface ConÞguration WindowDefining the Protocol Transmission Setting the Bridge MethodNetBIOS OtherUsing the Bridge and Port Configuration Windows From the Bridge Status window Virtual Ring Number Ring NumberNovell Translation Port ModeBridge Mode/Explorer Type Configuring SmartTrunking Port NameInstance ModeSmartTrunk State # SmartTrunksBridging Bridging 100 Configuring SmartTrunking Index Index-2 Index-3 Index-4
Related manuals
Manual 88 pages 62.16 Kb Manual 275 pages 3.4 Kb

CSX200, CSX400 specifications

Cabletron Systems was a leading developer of networking solutions, and its CSX400 and CSX200 series of high-performance switches represent some of the key innovations in the field of enterprise networking during their time. Both models were geared towards enhancing network reliability, efficiency, and speed, particularly in environments where heavy data traffic and complex networking demands were prevalent.

The CSX400, designed for larger enterprises, boasts a robust architecture capable of handling significant throughput. One of its standout features is its stackable design, allowing multiple switches to be interconnected and managed seamlessly as a single unit. This scalability provides organizations with the flexibility to expand their networks without significant infrastructure overhauls. The CSX400 supports various Ethernet standards, including 10/100 Ethernet and Gigabit Ethernet, positioning it to effectively manage both legacy and modern networking requirements.

In addition to its scalability, the CSX400 is distinguished by its advanced Layer 2 and Layer 3 routing capabilities. This dual-layer functionality enables efficient data handling and is instrumental in managing traffic between different network segments. Moreover, the switch incorporates features like VLAN (Virtual Local Area Network) support and Quality of Service (QoS) prioritization, allowing for enhanced performance of critical applications and streamlined bandwidth allocation.

On the other hand, the CSX200 series is tailored for smaller enterprises or branch offices needing a reliable yet efficient networking solution. Despite its compact design, the CSX200 is equipped with essential features that promote effective network management and security. It offers a simplified management interface, making it user-friendly for network administrators. The switch also provides essential access control measures, employing technologies like IEEE 802.1X for network access security.

Both the CSX400 and CSX200 prioritize performance through the incorporation of advanced switching technologies. They support features such as Spanning Tree Protocol (STP), enabling loop-free topologies and enhanced network resilience. These attributes are particularly crucial in dynamic networking environments where downtime can have significant repercussions on business operations.

Overall, Cabletron Systems' CSX400 and CSX200 series represent a blend of scalability, advanced routing capabilities, and user-friendly management, making them vital assets for organizations looking to optimize their network infrastructure during a period of rapid technological evolution. With their rich feature sets and unwavering performance, these switches helped pave the way for modern networking solutions that cater to diverse enterprise needs.
Top Page Image Contents