Cabletron Systems NB30 - Manual

Contents vi Ethernet and Remote Port Packet Discarded Statistics ........................... 3-17 Bridge Spanning Tree.................................................................................................. 3-17 Bridge Level Parameters .........................................................

1-1 Chapter 1 Introduction How to use this guide; related guides; software conventions; getting help; NB-30 Bridge firmware version Welcome to the SPECTRUM Element Manager for the NB-30 User Õs Guide. We have designed this guide to serve as a simple reference for using SPECTRUM Element Manager for t...

Introduction 1-2 Related Manuals Chapter 1, Introduction , provides a list of related documentation, describes certain software conventions, and shows you how to contact Cabletron Systems Technical Support. Chapter 2, The NB-30 Bridge Chassis View , describes the visual display of the NB-30 Bridge a...

Software Conventions 1-3 Introduction Software Conventions SPECTRUM Element Manager Õs device user interface contains a number of elements which are common to most windows and which operate the same regardless of which window they appear in. A brief description of some of the most common elements ap...

Introduction 1-4 Software Conventions ¥ Double-clicking means to position the mouse pointer over the indicated target, then press and release the mouse button two times in rapid succession. This is commonly used to activate an objectÕs default operation, such as opening a window from an icon. Note t...

Software Conventions 1-5 Introduction IP Address Displays the deviceÕs IP (Internet Protocol) Address; this will be the IP address used to deÞne the device icon. IP addresses are assigned via Local Management for the NB-30; they cannot be changed via SPECTRUM Element Manager. MAC Address Displays th...

Introduction 1-6 Getting Help Getting Help This section describes different methods of getting help for questions or concerns you may have while using SPECTRUM Element Manager. Using On-line Help You can use the NB-30 Bridge window Help buttons to obtain information speciÞc to the device. When you c...

NB-30 Bridge Firmware 1-7 Introduction Getting Help from the Cabletron Systems Global Call Center If you need technical support related to SPECTRUM Element Manager, or if you have any questions, comments, or suggestions related to this manual or any of our products, please feel free to contact the C...

2-1 Chapter 2 The NB-30 Bridge Chassis View Information displayed in the Chassis View window; the logical chassis view; the Chassis Manager window; bridge management functions The NB-30 Bridge Chassis View window is the main screen that immediately informs you of the current condition of individual ...

The NB-30 Bridge Chassis View 2-2 Viewing Chassis Information Viewing Chassis Information The NB-30 Bridge Chassis View window ( Figure 2-2 ) provides a graphic representation of the NB-30 Bridge, including a color-coded port display which immediately informs you of the current status of bridging at...

Viewing Chassis Information 2-3 The NB-30 Bridge Chassis View Front Panel Information The areas surrounding the main port display area provide the following device information: IP The Internet Protocol address assigned to the NB-30 appears in the title bar of the Chassis View window; this will displ...

The NB-30 Bridge Chassis View 2-4 Viewing Chassis Information Date The current date, in an mm/dd/yyyy format, set in the NB-30 BridgeÕs internal clock. Menu Structure By clicking on various areas of the NB-30 Bridge Chassis View display, you can access menus with device- and port-level options, as w...

Viewing Chassis Information 2-5 The NB-30 Bridge Chassis View The Device Menu From the Device Menu at the Chassis View window menu bar, you can access the following selections: ¥ Device Type... , which displays a window containing a description of the device being modeled: NB-30 - Remote Bridge. ¥ S...

The NB-30 Bridge Chassis View 2-6 Viewing Chassis Information The NB-30 Bridge Port Status Display Each port display on the NB-30 will indicate that portÕs current bridging state: FWD (Forwarding) (Green) The port is on line and forwarding packets across the NB-30 from one network segment to another...

Managing the Bridge 2-7 The NB-30 Bridge Chassis View Figure 2-4. Chassis Manager Window Viewing Hardware Types In addition to the graphical displays described above, choosing the Device Type option on the Device menu brings up a window that describes the management device being modeled: Figure 2-5....

The NB-30 Bridge Chassis View 2-8 Managing the Bridge Setting the Device Date and Time The Device menu provides access to two methods for changing the date and time stored in the deviceÕs internal clock: you can select the Edit Device Time and Edit Device Date options from the menu itself, or you ca...

Managing the Bridge 2-9 The NB-30 Bridge Chassis View 2. Enter the new date in an mm/dd/yyyy format, either by highlighting the field you wish to change and using the up and down arrow buttons, or by simply entering the new value in the appropriate field. 3. Click on OK to save the changes, or on Ca...

3-1 Chapter 3 NB-30 Bridging Bridge management overview; viewing and managing bridging interfaces; using the Bridge Status window; viewing bridge statistics; using Spanning Tree; using the Filtering Database; Restoring bridge defaults; Resetting bridge defaults; Restarting the bridge. Bridging Basic...

NB-30 Bridging 3-2 Bridging Basics About Transparent Bridging Transparent bridges are most common in Ethernet networks. Individual Transparent bridges monitor packet trafÞc on attached network segments to learn where end stations reside in relation to each segment by mapping the Source Address of ea...

Bridge Status 3-3 NB-30 Bridging ¥ The Spanning Tree window shows bridge port information and protocol parameters relating to the Spanning Tree AlgorithmÑthe method of determining the controlling bridge when a series of bridges are placed in parallel (see Bridge Spanning Tree , page 3-17 ). ¥ With t...

NB-30 Bridging 3-4 Bridge Status Figure 3-1. The NB-30 Bridge Status Window The following information is provided by the Bridge Status window for the NB-30 and for each individual bridging interface. Up Time At the top of the Bridge Status window, you can see the time period (in a days, hh:mm:ss for...

Bridge Status 3-5 NB-30 Bridging Bridge State on Interface This color-coded text box indicates the state of bridging over the port interface. Note that this state (and its corresponding color code) will also be reßected on the NB-20E/25E Port display in the Chassis View window. Possible bridge state...

NB-30 Bridging 3-6 Bridge Status Bridge Status on Remote Port Interface This color-coded text box indicates the operating status of the remote port. Possible status conditions are: ¥ LINK OK/DCE READY (green) Ñ Indicates that communication between the remote port and the data circuit-terminating equ...

Bridge Status 3-7 NB-30 Bridging ¥ NO EXT CLOCK (blue) Ñ Indicates that the remote port is not receiving a clock signal from the DCE. Interface Name This settable information Þeld allows you to enter a name for the bridgeÕs active local port and its remote port. The default name for the bridgeÕs two...

NB-30 Bridging 3-8 Enabling and Disabling Bridging Accessing Bridge Status Window Options At the top of the Bridge Status window, you can click on Bridge to access a menu that provides other bridge management options: ¥ The Spanning Tree window, which allows you to set the Spanning Tree Algorithm pa...

Bridge Statistics 3-9 NB-30 Bridging You can also disable bridging across all ports or on your NB-30 from the Chassis View window. To disable bridging at the device level from the Chassis View window: 1. Click on the Board Index (1) in the front panel display. A menu will appear. 2. Click on Enable ...

NB-30 Bridging 3-10 Bridge Statistics To access the NB-30 port Bridge Performance Graph window: 1. From the Bridge Status window, click on the appropriate port button (Ethernet or Remote). The Port menu will appear. 2. Click on Performance Graph.... The NB-30 port Bridge Performance Graph window wil...

Bridge Statistics 3-11 NB-30 Bridging Device Errors The total number of frames (either inbound or outbound) containing errors which prevented them from being processed by the bridgeÕs interfaces. Nothing The selected scale is not currently in use. For the port level window, you can choose from among...

NB-30 Bridging 3-12 Bridge Statistics Out of Window Coll. (Ethernet Port Only) The number of collisions at this port that were out of the standard collision window (51.2µs) due to a network problem experienced by the bridge. The problem may be that the network length exceeds speciÞcations, or that a...

Bridge Statistics 3-13 NB-30 Bridging 2. Click on the desired frames mode: For the Bridge Performance Graph, the options are Frames Forwarded, Frames Received, Frames Filtered, Device Errors, or Nothing. For the Ethernet Port Performance Graph, the options are Frames Received, Discarded Inbound, For...

NB-30 Bridging 3-14 Bridge Statistics The following color-coded Þelds appear in the Bridge Summary Statistics window. The Þrst four statistics Þelds are also represented visually by a color-coded pie chart (green = forwarded packets, blue = Þltered packets, red = error packets, magenta = other packe...

Bridge Statistics 3-15 NB-30 Bridging Figure 3-4. Ethernet Port Statistics Window To access the remote port Statistics window: 1. Click on Remote to reveal the Port menu. 2. Choose Statistics.... The following window, Figure 3-5 , will appear. Figure 3-5. Remote Port Statistics Window

NB-30 Bridging 3-16 Bridge Statistics Port Packet Statistics The following statistics Þelds appear in the Ethernet and Remote Port Statistics windows under the heading ÒPackets.Ó These are also graphically displayed in the pie chart (with the exception of Packets Received). Note that the Remote Port...

Bridge Spanning Tree 3-17 NB-30 Bridging CRC The total number of frames received by the port that had Cyclical Redundancy Check (CRC) errors. Framing The number of frames received by the port from the network that were misaligned Ñ that is, in which a byte of data in the packet contained less than 8...

Bridge Spanning Tree 3-19 NB-30 Bridging Bridge Level Parameters Bridge Priority This Þeld displays the ÒpriorityÓ component of the NB-30Õs unique bridge identiÞer. The Spanning Tree Algorithm assigns each bridge a unique identiÞer, which is derived from the bridgeÕs MAC address and the Priority. Th...

NB-30 Bridging 3-20 Bridge Spanning Tree Protocol Displays the Spanning Tree Algorithm Protocol type the NB-30 is currently using. The choices are: ¥ 802.1 ¥ DEC (DEC Lanbridge 100) ¥ None The following four Þelds display values used for various Spanning Tree timers that are set at the Root Bridge a...

Bridge Spanning Tree 3-21 NB-30 Bridging Bridge Port Level Parameters The following Þelds are applicable to each bridge port on the NB-30. Priority If two or more ports on the same bridge are connected to the same LAN segment, they will receive the same Root ID/Root Cost/Bridge ID information in Con...

NB-30 Bridging 3-22 Bridge Spanning Tree Topology This indicates how many times the bridgeÕs Topology Change ßag has been changed since the NB-30 was last powered-up or initialized. The Topology Change ßag increments each time a bridge enters or leaves the network, or when the Root Bridge ID changes...

Bridge Spanning Tree 3-23 NB-30 Bridging Changing Hello Time If the bridge is the Root Bridge, or is attempting to become the Root, and you want to change the length of time the bridge waits between sending conÞguration BPDUs: 1. Highlight the Hello Time field, and type in a new value. 2. Click on S...

NB-30 Bridging 3-24 Filtering Database Changing Port Priority To change the part of the Port Priority used in priority comparisons: 1. Highlight the port Priority field for the desired port, and enter the new priority identifier. Only valid hexadecimal numbers (0 to FF) are allowed in this field. Th...

NB-30 Bridging 3-26 Filtering Database Figure 3-7. The Filtering Database Window The following Þelds are listed in the top portion of the Filtering Database window. Type Indicates the type of entry in the database: Static, Dynamic, or Permanent. Number Displays the current number of Static, Dynamic,...

Filtering Database 3-27 NB-30 Bridging The following Þelds are applicable to the scrollable Address Entry panel of Filtering Database entries. List The List checkboxes at the bottom of the window indicate whether the associated entry type (Dynamic, Static, or Permanent) will be displayed in the scro...

NB-30 Bridging 3-28 Filtering Database Changing the Type of Entry You can change the type of any entry in the Þltering database to be a Static or Permanent entry. To do so: 1. Click on the shadowed Type button. A menu will appear with the three possible types to which the entry can be changed. Dynam...

DSX-1 Summary 3-29 NB-30 Bridging To delete an address: 1. Click to highlight the address entry in the Address Entry panel that you wish to delete from the filtering database. 2. Click on Delete. Erasing Entries from the Permanent or Acquired Databases You can erase the entire Acquired or Permanent ...

NB-30 Bridging 3-30 DSX-1 Summary Figure 3-9. Bridge DSX-1 Summary Window Configuring, Running, and Checking the Loopback Test To conÞgure and run the loopback test: 1. Click on Test Pattern. A menu will appear. 2. Click to select the appropriate data pattern option to be used in the loopback test: ...

Restoring Bridge Defaults 3-31 NB-30 Bridging To halt a test in progress and return to the Bridge Status window, click on Cancel . The results of the test will be displayed in the status Þeld next to the test button: ¥ Not in Loopback Ñ Indicates that the DSX-1 port is currently in normal operating ...

NB-30 Bridging 3-32 Resetting Bridge Counters ¥ All Spanning Tree Algorithm information screens back to their default values. You must also restart the bridge for the new Spanning Tree information to take effect. ¥ Ageing Time on Filtering Database Screen back to 300 seconds ¥ DSX-1 Test Pattern to ...