Cabletron Systems Fast Network 10 manuale d’uso

F AST NETW ORK 10 USER GUIDE X2 X 3X 4X 5X 6X 7X 8X 9X 10X 11 X 12X AUI 1 Link 23 1 45 6 7 8 91 0 1 1 1 2 A B Usr Segment Status Select TX RX Act Col Reset Ready FN10-12 NMS Port Pwr X2 X 3X 4X 5X 6X 7X 8X 9X 10X 11X 12X 13X 14X 15X 16X 17X 18X 19X 20X 21X 22X 23X 24X 13 14 15 16 17 18 19 20 21 22 23 24 AUI 1 Link Link 23 1 45 6 7 8 91 0 1 1 1 2 A [...]

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F ast Network 10 User Guide i NOTICE Cabletron Systems reserves the right to mak e changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes ha ve been made. The hardware, firmware, or softw are described in this m[...]

ii F ast Network 10 User Guide FCC NOTICE This de vice complies with Part 15 of the FCC rules. Operation is subject to the follo wing two conditions: (1) this de vice may not cause harmful interference, and (2) this device must accept an y interference recei ved, including interference that may cause undesired operation. NOTE: This equipment has be[...]

F ast Network 10 User Guide iii CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user , and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software [...]

iv Fast Netw ork 10 User Guide UNITED STATES GOVERNMENT RESTRICTED RIGHTS The enclosed product (a) was de veloped solely at pri vate expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its succ[...]

F astNET 10 User Guide v CONTENTS CHAPTER 1 INTR ODUCTION 1.1 About This Manual ....................................................................... 1-1 1.2 Getting Help ................................................................................. 1-2 1.3 Document Conventions ............................................................... 1-[...]

Contents vi F astNET 10 User Guide CHAPTER 3 CONFIGURING Y OUR FN10 3.1 Assigning IP Addresses ............................................................... 3-3 3.1.1 Displaying IP Addresses ................................................. 3-4 3.1.2 Deleting an IP Address.................................................... 3-4 3.1.3 Changing a S[...]

Contents F astNET 10 User Guide vii 4.5 Using LCM to Manage the FN10 ............................................... 4-15 4.5.1 Disabling a Port ............................................................ 4-15 4.5.2 Enabling a Port ............................................................. 4-16 4.5.2.1 noRIP Option .............................[...]

Contents viii F astNET 10 User Guide APPENDIX A T ECHNICAL SPECIFICATIONS A.1 FN10 Specifications .................................................................... A-1 A.2 Serial Cable Pin Assignments ..................................................... A-3 A.3 10BASE-T Pin Assignments ....................................................... A-3[...]

F ast Network 10 User Guide P age 1-1 CHAPTER 1 INTR ODUCTION 1.1 ABOUT THIS MANUAL This manual is for system administrators responsible for configuring, monitoring, and maintaining the Fast Netw ork 10 (FN10). Y ou should ha v e a familiarity with networking concepts and principles. In addition, a basic understanding of SNMP is helpful. Some FN10[...]

Chapter 1: Introduction P age 1-2 F ast Network 10 User Guide • Chapter 5, FN10 Filters , describes FN10 filtering and provides specific examples of ho w filters can be used. It also provides instructions for adding, modifying, and deleting Port filters using the Local Console Manager (LCM). • Chapter 6, FN10 Diagnostics and Troubleshooting[...]

Document Con ventions F ast Network 10 User Guide P age 1-3 1.3 DOCUMENT CON VENTIONS The follo wing con ventions are used throughout this document: LCM commands, prompts, and information displayed by the computer appear in Courier typeface, for e xample: Current Number of Learned Addresses: 133 Number of Defined Filters: 4 Information that you ent[...]

Chapter 1: Introduction P age 1-4 F ast Network 10 User Guide 1.4 RELATED DOCUMENTATION The follo wing documentation may assist the user in using this product: • Fast Network 10 MIB Refer ence Guide – contains enterprise MIB information. • Inter connections, Bridges and Routers, Radia Perlman, Addison W esley © 1992. • Internetworking with[...]

Overview F ast Network 10 User Guide P age 1-5 . Figure 1-1 FN10 Front P anels Figure 1-2 FN10 Rear P anel with the Optional Fast Ethernet P orts The FN10: • Provides dedicated bandwidth for each netw ork connected to its ports. • Provides full store and forw ard bridging functionality . • Provides complete error checking functionality . • [...]

Chapter 1: Introduction P age 1-6 F ast Network 10 User Guide • Implements the Spanning T ree protocol (802.1d). • Configured with factory-set def aults for immediate plug-and-play capability . In addition, the FN10 of fers features that can help you manage and maintain your network, such as: • Configuration and management using the Simple [...]

Overview F ast Network 10 User Guide P age 1-7 Media Access Control (MA C) sub-layer of the Data Link layer . Figure 1-3 sho ws the OSI Reference Model. Figure 1-3 OSI Reference Model Because the FN10 does not process any Netw ork Layer information, it provides a high le vel of performance in terms of pack et throughput. In addition, the FN10 does [...]

Chapter 1: Introduction P age 1-8 F ast Network 10 User Guide forwards the pack et to the network se gment associated with that destination address. Ho we ver , if the packet’ s source and destination address are on the same network se gment, kno wn as local traffic , the packet is automatically discarded (i.e., ignored by the FN10). For e xampl[...]

Overview F ast Network 10 User Guide P age 1-9 automatically reconfigured by the Spanning T ree protocol to create an alternate path to the LAN. 1.5.2 FN10 Bridge Address T able The FN10 creates and maintains a dynamic database of addresses called the Bridge Address T able. The FN10 e xamines ev ery packet to determine its source address and LAN s[...]

Chapter 1: Introduction P age 1-10 F ast Network 10 User Guide • A single port number of the LAN on which the address resides • The age of the entry • V arious statistics counters • Any filtering restrictions added by a Netw ork Management Station (NMS) Each static entry contains the same information as a dynamic entry , except the static [...]

Overview F ast Network 10 User Guide P age 1-11 Additional FN10 features, such as trunking, Fast Ethernet, and virtual workgroups allo w you to optimize bandwidth and design a more efficient flo w for your network traf fic. 1.5.4.1 FN10 T runking The FN10 allo ws multiple trunk groups with up to eight ports each to be connected between the FN10 [...]

Chapter 1: Introduction P age 1-12 F ast Network 10 User Guide Figure 1-6 FN10 Application #2 1.5.4.2 FN10’ s F ast Ethernet Option The FN10, configured with the Fast Ethernet option, has tw o additional ports that provide a f ast Ethernet connection of 100 Mbps. Applying this increased bandwidth to the pre vious example, the Manuf acturing Depa[...]

Overview F ast Network 10 User Guide P age 1-13 Figure 1-7 FN10 Application #3 Figure 1-8 illustrates ho w the FN10 can be used in a backbone network configuration using increased bandwidth of the optional Fast Ethernet configuration. Figure 1-8 FN10 Application #4 FN10 / FE LAN segment FN10 / FE 100 Mbps bandwidth LAN segment (Fast Ethernet) Rea[...]

Chapter 1: Introduction P age 1-14 F ast Network 10 User Guide 1.5.4.3 Vir tual W orkgr oups The FN10 allo ws you to define ports for logical groups of associated hosts (virtual workgroups) to pro vide a more efficient flo w of traf fic across your Ethernet network. V irtual workgroups of fer you the ability to limit broadcasts to logical domai[...]

Local Console Manager F ast Network 10 User Guide P age 1-15 Figure 1-10 Using the FN10 to Create Vir tual W orkgr oups to Help Optimize Bandwidth A host from workgroup A can limit a broadcast to all hosts within workgroup A or B and pre vent the broadcast from going across the network and adding to the amount of contention for the limited 10 Mbps [...]

Chapter 1: Introduction P age 1-16 F ast Network 10 User Guide The follo wing sections describe LCM command syntax and the basic LCM commands for logging in, logging out, and getting help. • LCM commands used for configuring the FN10 are described in Chapter 3, Configuring Your FN10. • LCM commands used for monitoring and managing the FN10 are[...]

Local Console Manager F ast Network 10 User Guide P age 1-17 • Information that you need to enter with an LCM command is enclosed in square brackets [ ]. F or example, you must enter a port number and an IP address to ex ecute the ipaddr [PORT-NUMBER] [IP ADDRESS] command: FN10 > ipaddr 6 192.138.217.40 • Parameters that appear in all capita[...]

Chapter 1: Introduction P age 1-18 F ast Network 10 User Guide 1.6.2.1 Help Displays the menu of a v ailable commands. Help can also be displayed by typing a question mark ( ? ). The output from the help command is displayed belo w . 1.6.2.2 Erase Entering erase to erase the current FN10 configuration sets up the IP address on Port 1 to 192.0.2.1 [...]

Local Console Manager F ast Network 10 User Guide P age 1-19 1.6.2.3 Exit Logs you out of LCM. (The exit command is functionally equi valent to the logout command.) 1.6.2.4 Logout The logout command logs you out of LCM. (The logout command is functionally equi v alent to the exit command.) 1.6.2.5 T raplog Displays the traps messages captured by th[...]

Chapter 1: Introduction P age 1-20 F ast Network 10 User Guide[...]

F ast Network 10 User Guide P age 2-1 CHAPTER 2 UNPAC KING AND INSTALLING Y OUR FN10 Carefully unpack the FN10 from the shipping carton and inspect it for possible damage. If any damage is e vident, contact your supplier . The shipping carton contains the follo wing: • The FN10 unit • One A C power cord • Console Cable kit • T wo rack-mount[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-2 F ast Network 10 User Guide Figure 2-1 FN10 12- and 24-P or t Front P anels Figure 2-2 FN10 Fast Ethernet (FE) Rear P anel Ethernet Attachment Unit Interface (AUI) Port RJ45 Ethernet 10BASE-T Status LEDs and Buttons Crossover Ports X2 X 3X 4X 5X 6X 7X 8X 9X 10X 11X 12X AUI 1 Link 23 1 45 6 7 [...]

FN10 P anels F ast Network 10 User Guide P age 2-3 T able 2-1 Meaning of FN10 LEDs LED Meaning Link (upper le v el of por t LEDs) On – Indicates the link is good. Off – Indicates there is no link. Status (low er le vel of por t LEDs) On/Blinking – Indicates you are monitoring the por t for a selected segment status condition. Off – Indicate[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-4 F ast Network 10 User Guide T able 2-2 describes the FN10 buttons. 2.2 INSTALLING THE FN10 T able-mounting an FN10 If the FN10 is to be table-mounted, make sure you install the four stick-on feet on the bottom of the unit, as sho wn in Figure 2-3. In addition, make sure the unit is within rea[...]

Installing the FN10 F ast Network 10 User Guide P age 2-5 Rac k-mounting an FN10 The table belo w describes some general considerations you should be aw are of before mounting a FN10 in a rack assembly . The FN10 can be rack-mounted in a standard 19-inch equipment cabinet. T o mount the FN10 in a rack assembly , apply the following steps: 1. Attach[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-6 F ast Network 10 User Guide 2. Place the FN10 chassis in the cabinet. 3. Secure the FN10 with the rack-mount fasteners by inserting and securing a fastener through each of the four slots in the rack-mount brackets, as shown in Figure 2-4. Figure 2-4 Rack-mounting the FN10 4. Once the FN10 is [...]

Connecting the Local Console Manager F ast Network 10 User Guide P age 2-7 5. After several more seconds, the Ready LED will stay on, indicating that the power-up diagnostics sequence is complete. In addition, the Port Link LEDs will turn on for those ports with good links and the Segment Status LEDs will turn on (or flash) when the selected status[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-8 F ast Network 10 User Guide 2.4 CONNECTING THE FN10 TO THE NETWORK Installations v ary depending on existing wiring, application objecti ves, and other considerations. Be sure to ha ve your current netw ork topology map a v ailable or contact your network administrator . The FN10 can be conne[...]

Adding or Replacing the Optional F ast Ethernet Module F ast Network 10 User Guide P age 2-9 2.4.1 Connecting the A UI Interface The FN10 includes one Ethernet Attachment Unit Interface (A UI) connector (Port 1). T o connect the A UI to a thick coax network, you must use an A UI drop cable and a tap-type transcei ver: 1. Attach a tap-type transceiv[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-10 F ast Network 10 User Guide Figure 2-5 Removing the FN10 Bac kplate 3. Insert the FE module assembly, making sure the edges of the board fit into the guides that allow the assembly to smoothly glide into place. Refer to Figure 2-6. Figure 2-6 Inserting the FE Module Assembly 4. When the FE a[...]

Adding or Replacing the Optional F ast Ethernet Module F ast Network 10 User Guide P age 2-11 Figure 2-7 Completed FE Module Installation 6. Reconnect the FN10 to the network, plug in the power cord, and power on the unit. 7. Configure the FE module using the LCM command line interface. Refer to Chapter 3, Configuring Your FN10 .[...]

Chapter 2: Unpacking and Installing Y our FN10 P age 2-12 F ast Network 10 User Guide[...]

F ast Network 10 User Guide P age 3-1 CHAPTER 3 CONFIGURING Y OUR FN10 The FN10 does not require any additional configuration to operate as a standard, transparent switch. Ho we ver , if you want to use any of the FN10’ s advanced functions, such as filtering, you must first assign an IP (Internet Protocol) address to any of the ports on the F[...]

Chapter 3: Configur ing Y our FN10 P age 3-2 F ast Network 10 User Guide • Displaying trunking status • Defining and deleting virtual workgroups • Assigning a community name NO TE Y ou can use the LCM erase command to er ase all configuration inf or mation on the next system reset. If y ou are using a network management tool other than LCM[...]

Assigning IP Addresses F ast Network 10 User Guide P age 3-3 3.1 ASSIGNING IP ADDRESSES IP addresses for each port must be unique. IP addresses are di vided into classes based on what portion of the address is network or port information. The address classes are A, B, and C. • Class A addresses are used in very lar ge networks that support man y [...]

Chapter 3: Configur ing Y our FN10 P age 3-4 F ast Network 10 User Guide 3.1.1 Displa ying IP Addresses T o display IP addresses, subnet masks, and MA C addresses of all ports on the FN10 you are configuring, at the LCM prompt: 1. Type ipaddr LCM displays the current IP address table, for example: 3.1.2 Deleting an IP Address T o delete an IP add[...]

Enabling Bridging F ast Network 10 User Guide P age 3-5 3.2 ENABLING BRIDGING The LCM bridge command allo ws you to set bridging options for a single port or a range of ports. The options include: •o f f • on (the default with BPDU enabled) •n o BPDU BPDU (Bridge Protocol Data Unit) is a data unit transmitted as part of the IEEE 802.1d Spanni[...]

Chapter 3: Configur ing Y our FN10 P age 3-6 F ast Network 10 User Guide 3.3 DISABLING BRIDGING T o turn of f the bridging function for a port or port range, at the LCM prompt: 1. Type bridge [PORT-RANGE] off For example, bridge 2 off would disable bridging on port 2. LCM responds: 3.4 DISPLAYING BRIDGING FUNCTIONS T o display the bridging functio[...]

Enabling T runking F ast Network 10 User Guide P age 3-7 3.5 ENABLING T RUNKING If your network configuration requires you to connect tw o or more FN10s together , but the applications you are running o ver the network require more than 10 Mbps of bandwidth per connection, you can use the b uilt-in trunking feature to increase bandwidth up to 80 M[...]

Chapter 3: Configur ing Y our FN10 P age 3-8 F ast Network 10 User Guide T runk Groups Each set of connections between two FN10s is called a T runk Gr oup . Y ou can create se veral T runk Groups to interconnect your FN10s. Each FN10 can ha ve up to four T runk Groups. For e xample, if you hav e three FN10s (A, B, and C), as sho wn in Figure 3-2, [...]

Disabling T runking F ast Network 10 User Guide P age 3-9 T o enable trunking for the example sho wn, you would: 1. Connect the desired ports of the FN10s together using 10BASE-T crossover cables. If FN10 A is handling only a small number of users, the A to B Trunk Group could have just two ports per FN10. If FN10 B and C are expected to interconne[...]

Chapter 3: Configur ing Y our FN10 P age 3-10 F ast Network 10 User Guide 1. Type trunk <PORT-RANGE> off For example, trunk 2-4 off 3.7 DISPLAYING T RUNKING STATUS T o check the status of your current trunking configuration, at the LCM prompt: 1. Type trunk <PORT-RANGE> The display could look like the follo wing: The follo wing condit[...]

Displa ying T runking Status F ast Network 10 User Guide P age 3-11 T o check the status for ports configured for trunking, at the LCM prompt: 1. Type status <PORT-RANGE> The display could look like the follo wing: The follo wing conditions can be displayed: • Broken — T runking is enabled, but the port in non-operational. • Closed (or[...]

Chapter 3: Configur ing Y our FN10 P age 3-12 F ast Network 10 User Guide 3.8 DEFINING AND DELETING W ORKGROUPS The FN10 allo ws you to define logical groups of associated hosts (virtual workgroups) to pro vide a more ef ficient flo w of traf fic across your Ethernet network. V irtual workgroups of fer you the ability to limit broadcasts to lo[...]

Defining and Deleting W orkgr oups F ast Network 10 User Guide P age 3-13 The LCM commands used to create the pre vious configuration are as follo ws: 1. To create workgroup A on ports 3, 4, 5, 13, and 16: FN10 > workgroup A 3-5,13,16 LCM responds with the following display: Name: a Ports: 3, 4, 5, 13, 16 Info: all 2. To create workgroup B on [...]

Chapter 3: Configur ing Y our FN10 P age 3-14 F ast Network 10 User Guide 2. To create workgroup B: FN10 > workgroup B 7,11,16,24 ip 198.113.121.0 LCM responds with the following display: Name: b Ports: 7, 11, 16, 24 Info: IP 198.113.121.0 255.255.255.0 In both cases, a specific NETMASK v alue was omitted and LCM assumed the standard IP addres[...]

Assigning a Comm unity Name F ast Network 10 User Guide P age 3-15 T o delete a workgroup, at the LCM prompt: 1. Type workgroup NAME delete T o create or modify the port list for a specific workgroup, at the LCM prompt: 1. Type workgroup NAME PORT-RANGE T o modify the network classification of a specific workgroup, at the LCM prompt: 1. Type wor[...]

Chapter 3: Configur ing Y our FN10 P age 3-16 F ast Network 10 User Guide 3.10 CONFIGURING MULTICAST STORM PR OTECTION The FN10 provides automatic protection against multicast storms. Multicast storms are excessi ve broadcasts to all ports, typically caused by a malfunctioning de vice. The y can result in sev ere network performance problems, incl[...]

Modifying MIB V ariables F ast Network 10 User Guide P age 3-17 3.11 MODIFYING MIB V ARIABLES Specific instructions for controlling FN10 operations, modifying parameters, and so on, depend on the NMS you are using. This manual provides instructions for using LCM commands. Ho we ver , LCM commands do not exist for all configuration options. Y ou m[...]

Chapter 3: Configur ing Y our FN10 P age 3-18 F ast Network 10 User Guide 3.11.4 A uthentication P assw ord The set password and get passw ord v ariables (from the SMC proprietary MIB), must be initialized with the correct authentication passwords. All requests from any SNMP manager contain a community name field. For set requests, the community [...]

F ast Network 10 User Guide P age 4-1 CHAPTER 4 MONITORING AND MANAGING Y OUR FN10 Monitoring the FN10 consists of collecting and analyzing statistics and system status information. Additional statistics gathered by the FN10 are the result of user -configurable filters. See Chapter 5, FN10 Filters , for information on setting up FN10 filters. Y [...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-2 F ast Network 10 User Guide • MA C statistics • T raffic analysis statistics • SNMP statistics Y ou can use this information to analyze your o verall netw ork performance and to make configuration changes as necessary . For example, Ethernet port statistics can help you identify netw [...]

FN10 Statistics F ast Network 10 User Guide P age 4-3 4.2.1 Pseudo Filter s Y ou can configure pseudo-filters to optimize your network design. Pseudo-filters generate statistics as if a filter had actually been applied without actually in v oking the filter or impacting the network. See Chapter 5, Fast Network 10 Filters for information on set[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-4 F ast Network 10 User Guide • The number of times each filter was successfully in voked, and the source address of the packet for the last successful in vocation of each of the combination filters. 4.2.4 Ethernet P or t Statistics For each Ethernet port connection on the FN10, the follo w[...]

FN10 Statistics F ast Network 10 User Guide P age 4-5 For each of the above categories, statistics on whether a packet was forwarded or filtered are available. In addition, if a packet was filtered, the following conditions are recorded: - If the packet is local traf fic - If the port is not in the Spanning T ree Forwarding state - If there is a s[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-6 F ast Network 10 User Guide • The number of recei ved pack ets with frame alignment errors. • The number of packet transmissions that were initially deferred due to the media being b usy . • The number of packets not transmitted due to e xcessi ve collisions. • The number of packets t[...]

FN10 Statistics F ast Network 10 User Guide P age 4-7 4.2.6 T raffic Analysis Statistics Y ou can configure the FN10 to collect statistics on traf fic between activ e Ethernet ports, for example: • Number of packets sent from Station A to Station B. Configure pseudo source-port filter with Station A’s address as source address match and Stat[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-8 F ast Network 10 User Guide • The number of SNMP PDUs recei ved by the FN10 which had an ASN.1 parsing error while being decoded by the FN10. [ snmpInASNParseErrs ] • The total number of MIB objects which ha ve been successfully retrie ved by the FN10 as a result of SNMP GetRequest or Get[...]

Using LCM to Chec k FN10 Status F ast Network 10 User Guide P age 4-9 • Address display • Ipaddr • Ident These LCM commands are described in the sections that follo w . 4.3.1 Displa ying Status The status command displays the status of the FN10 and automatically pages through the status of all of the Ethernet ports, pausing at each screen of [...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-10 F ast Network 10 User Guide If you do not want to view the status of each Ethernet port, use the Ctrl-C keys to return to the LCM prompt. If you do not want to view the status of port 2, use the Ctrl-C keys to return to the LCM prompt. You can view the status for multiple of ports by typing [...]

Using LCM to Chec k FN10 Status F ast Network 10 User Guide P age 4-11 4.3.2 Displa ying MA C Addresses The addresses display command displays all MA C addresses in the FN10 Bridge Address T able. The display includes: • The MA C address • T ype of address, including: - Dynamic (learned) - Ethernet port (for the MA C address of an Ethernet port[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-12 F ast Network 10 User Guide T o display all MA C addresses, at the LCM prompt: 1. Type addresses display any LCM responds with a list of all MAC addresses, their associated ports, the type, age, and number of frames from and to that address. If you do not specify any , only the learned stati[...]

Using LCM to Chec k FN10 Status F ast Network 10 User Guide P age 4-13 LCM would display: LCM allo ws you to display MA C addresses in two formats: • Little-endian (default) Little-endian is a method of storing or transmitting data in which the least significant bit of each byte is presented first. This is used in Ethernet networks. • Big-endia[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-14 F ast Network 10 User Guide 4.3.3 Displa ying Manufacturing Information The ident command identifies FN10 manufacturing information, including the part number and any po wer-up test codes and diagnostic data. T o display the manufacturing information, at the LCM prompt: 1. Type ident LCM di[...]

Using LCM to Manage the FN10 F ast Network 10 User Guide P age 4-15 4.5 USING LCM TO MANAGE THE FN10 The LCM commands that enable you to manage the FN10 include: • Disable • Enable • Ipaddr • Community • Baud • Reboot These LCM commands are described in the sections that follo w . 4.5.1 Disabling a P or t There can be times when you nee[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-16 F ast Network 10 User Guide 4.5.2 Enabling a P or t When you enable an Ethernet port that has been disabled, whate ver bridging functions you had pre viously configured for that port are re-enabled. T o enable a port, or a range of ports, at the LCM prompt: 1. Type enable <PORT-RANGE>[...]

Using LCM to Manage the FN10 F ast Network 10 User Guide P age 4-17 The noRIP option allo ws you to turn of f the routing information that b uilds the routing table. Y ou would use this option when you are connecting network de vices that do not support RIP . 4.5.3 Changing a Subnet Mask Y ou can optionally set the subnet mask for a port. A subnet [...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-18 F ast Network 10 User Guide 4.5.4 Changing a Comm unity Name A community name is similar to a password. Y ou use the same steps to assign a ne w community name or to change an existing community name. This sets the MIB v ariable sxadminAnyPass . Y ou can then enter a community name to perfor[...]

Using LCM to Manage the FN10 F ast Network 10 User Guide P age 4-19 T o display the current baud rate setting, at the LCM prompt: 1. Type baud LCM responds: T o change the baud rate setting, at the LCM prompt: 1. Type baud <baud rate> For example, baud 9600 would set the baud rate to 9600. LCM responds: 4.5.6 Setting a Reboot Time Y ou can en[...]

Chapter 4: Monitor ing and Managing Y our FN10 P age 4-20 F ast Network 10 User Guide[...]

F ast Network 10 User Guide P age 5-1 CHAPTER 5 FN10 FILTER S One of the most significant features of the FN10 is its po werful user -configurable filtering capabilities. A filter is an instruction to the FN10 to screen data packets based on the criteria you define. Filtering is useful for gathering statistics, implementing security measures, [...]

Chapter 5: FN10 Filters P age 5-2 F ast Network 10 User Guide • Multicast traf fic from any station (MA C layer address). Multicast packets are those destined for more than one address. Each source address can be assigned one of the follo wing restrictions: • Filter all packets from this source address. • Filter all multicast packets from th[...]

Bridge Address T able Filter s F ast Network 10 User Guide P age 5-3 W ith the Bridge Address T able entry sho wn in T able 5-1, you can use any of the follo wing types of Bridge Address T able filtering: • Source address • Source address multicast • Destination address 5.1.1 Sour ce Address Filter The source address filtering capability us[...]

Chapter 5: FN10 Filters P age 5-4 F ast Network 10 User Guide 5.1.3 Destination Address Filter A destination address filter can be used to discard all traf fic destined to a specific MA C address. This type of filter is configured by setting a static address entry for the MA C address and specifying {null} as the port assignment. The port assi[...]

P or t Filters F ast Network 10 User Guide P age 5-5 Like wise, you can assign an Exit port one of the following restrictions: • Only allo w a certain number of multicast packets e very “n” seconds and then stop transmitting. • Filter a packet destined for this port that matches all of the fields in the Port filter . Port filters can inc[...]

Chapter 5: FN10 Filters P age 5-6 F ast Network 10 User Guide For the fields defined as T rue , False , or Not A pplicable ( NA ) in the follo wing sections: • T rue – Means all traffic that matches the field will be filtered. • F alse – Means all traf fic that does not match the field selection will be filtered (in verse filter). [...]

P or t Filters F ast Network 10 User Guide P age 5-7 For e xample, if you had the configuration sho wn belo w , the And operator assigned to Port 2 would apply to the ne xt instance of Port 2, not necessarily the next sequential filter number in the Port Filter T able index. The Port filter configuration fields are described in T able 5-2. T a[...]

Chapter 5: FN10 Filters P age 5-8 F ast Network 10 User Guide Source Range Star t The star ting MAC address f or the source range of MA C addresses. If you are filtering on a single source address, enter that address here . Source Range End Ending MA C address f or the source range of MA C addresses. If you are filtering on a single address, ente[...]

P or t Filters F ast Network 10 User Guide P age 5-9 Field Origin Either TYPE , IP , MAC, or SR (see Field Offset description). The or igin is the field from which the offset count star ts. TYPE Field Offset The decimal offset of the por tion of the pack et to be e xamined. If the or igin is TYPE , the field offset v alue is relativ e to the end [...]

Chapter 5: FN10 Filters P age 5-10 F ast Network 10 User Guide When adding or modifying a filter , you must enter both a Sour ce Range Start v alue and a Sour ce Range End v alue. For e xample: Source Range: [NA] (InRange/OutRange/NA)> inrange Source Range Start: [00:00:00:00:00:00] > 08:00:20:00:00:00 Source Range End: [00:00:00:00:00:00] &[...]

Using Filters f or Security Purposes F ast Network 10 User Guide P age 5-11 Figure 5-1 Using Filters to Restrict Access to an Adjoining Network Segment FN10 Engineering Subnet LAN 2 Accounting Subnet LAN 3 Manufacturing Subnet LAN 1 Concentrator Concentrator[...]

Chapter 5: FN10 Filters P age 5-12 F ast Network 10 User Guide The company w ants to allow Engineering and Accounting workstations to access resources on the Manufacturing subnet ( LAN 1 ), b ut wants to pre vent users on the Engineering subnet ( LAN 2 ) from accessing resources on the Accounting subnet ( LAN 3 ). Therefore, the objecti ve is to se[...]

Using Filters f or Security Purposes F ast Network 10 User Guide P age 5-13 Example 2: Blocking Access to Specific Stations In this example, a compan y uses a FN10 to connect two LANs (see Figure 5-2). Three workstations on LAN 2 (the Accounting Subnet) contain sensiti ve data (w orkstations F , G, and H). The compan y wants to pre vent users on L[...]

Chapter 5: FN10 Filters P age 5-14 F ast Network 10 User Guide This information is used to configure the filter as follo ws: • Filter identifier – port number of the port attached to LAN 2 as a destination. • Filter fields – destination address F-H (range, match) source LAN = 1 (match). Note that a match flag is specified for both fi[...]

Using Filters f or Security Purposes F ast Network 10 User Guide P age 5-15 Example 3: Restricting Access to A uthorized Users The example sho wn in Figure 5-3 is very similar to the pre vious e xample. The dif ference is that access to workstations F , G, and H will not be denied to all LAN 1 users. Instead, only authorized users on LAN 1 will be [...]

Chapter 5: FN10 Filters P age 5-16 F ast Network 10 User Guide Note that the FN10 is not storing information designed to identify restricted de vices or authorized or unauthorized users. Instead, it is using address information (which it does store) to act on filters that ha ve been configured to meet the desired objecti ve: Restrict access to ce[...]

Using Filters to Enhance Netw ork Perf ormance F ast Network 10 User Guide P age 5-17 Example 4: Using a Firewall Filter to Contr ol Multicasts T o optimize network performance, you can configure filters to reduce multicasts (packets broadcast to multiple destinations). In addition, you can pre vent multicasts pack ets of a particular protocol ty[...]

Chapter 5: FN10 Filters P age 5-18 F ast Network 10 User Guide This filter is configured as follo ws: • Filter identifier – port number of the port attached to LAN 2 as a destination (i.e., exit) • Filter identifier – port number of the port attached to LAN 3 as a destination (i.e., exit) • Filter fields – protocol type = AppleT al[...]

Configuring a P or t Filter F ast Network 10 User Guide P age 5-19 5.5 CONFIGURING A P OR T FILTER T o configure a Port filter , use the Local Console Manager (LCM). The LCM prompts you through the fields for each Port filter you want to configure. If you are adding a Port filter to be used in conjunction with another Port filter , and the [...]

Chapter 5: FN10 Filters P age 5-20 F ast Network 10 User Guide Complete the follo wing steps to configure a Port filter . T o accept a default v alue, press the Enter ke y . At the LCM prompt: 1. Type filters add 2. Enter the port number. 1 is the default. If the filter is for port 1, you do not need to enter anything; if the filter is for anothe[...]

Configuring a P or t Filter F ast Network 10 User Guide P age 5-21 9. Select whether the filter will use a destination range of MAC addresses. NA is the default; meaning the filter will not use a destination range. You do not need to enter anything unless you are using a destination range. (If you are not using a destination range, go to Step 12. [...]

Chapter 5: FN10 Filters P age 5-22 F ast Network 10 User Guide 18. Enter the field value. 19. Enter the field mask. 20. Select the operator. Or is the default. You do not need to enter anything if the filter will use the Or operator. If you want the filter to use the And operator, type And . 21. Enter the filter number. One ( 1 ) is the default. Yo[...]

Filtering and P erformance Considerations F ast Network 10 User Guide P age 5-23 5.5.2 Deleting a P or t Filter T o delete a Port filter , at the LCM prompt: 1. Type filters delete LCM prompts you for the filter index. 2. Enter the filter number. LCM responds filter deleted. 5.6 FILTERING AND P ERFORMANCE CONSIDERATIONS When implementing filters,[...]

Chapter 5: FN10 Filters P age 5-24 F ast Network 10 User Guide[...]

F ast Network 10 User Guide P age 6-1 CHAPTER 6 FN10 DIAGNOSTICS AND T R OUBLESHOOTING The FN10 incorporates se veral b uilt-in diagnostic and testing capabilities which are con venient to use and cause minimal or no disruption to the operational network. These capabilities are effecti ve for isolating problems within the FN10 unit. Built-in diagno[...]

Chapter 6: FN10 Diagnostics and T roub leshooting P age 6-2 F ast Network 10 User Guide 6.1.1 P ower -up LED Sequence When you po wer -up the FN10, the follo wing occurs: 1. All LEDs, except for the Port Link LEDs, turn on for one second. 2. The Power (Pwr) LED remains on. 3. The Ready LED starts flashing. 4. After several seconds, the Port Link LE[...]

Responses to F ailures at P ower -up F ast Network 10 User Guide P age 6-3 6.1.3 Software Chec ksum Comparison When the FN10 reboots, its operational software is v erified by a checksum comparison before it is loaded. If the software f ails the checksum test due to an interrupted ne w software distrib ution procedure, the FN10 will automatically u[...]

Chapter 6: FN10 Diagnostics and T roub leshooting P age 6-4 F ast Network 10 User Guide 6.3.1 Loopbac k T ests Built-in local and remote loopback tests can be used to test indi vidual ports while the FN10 is operational. When in local loopback mode, a port is disconnected from the network. The FN10 generates loopback packets for the port, and the p[...]

Status and Activity Indicators F ast Network 10 User Guide P age 6-5 Figure 6-1 FN10 Front P anel LEDs X2 X 3X 4X 5X 6X 7X 8X 9X 10X 11 X 12X 13X 14X 15X 16X 17X 18X 19X 20X 21X 22X 23X 24X 13 14 15 16 17 18 19 20 21 22 23 24 AUI 1 Link Link 23 1 45 6 7 8 91 0 1 1 1 2 A B Usr Segment Status Select TX RX Act Col Reset Ready NMS Port Pwr FN10-24 P or[...]

Chapter 6: FN10 Diagnostics and T roub leshooting P age 6-6 F ast Network 10 User Guide T able 6-2 describes the FN10 buttons. T able 6-1 Meaning of FN10 LEDs LED Meaning Link (upper le vel of port LEDs) On – Indicates the link is good. Of f – Indicates there is no link. Status (lo wer le vel of port LEDs) On/Blinking – Indicates you are moni[...]

T roubleshooting F ast Network 10 User Guide P age 6-7 6.5 T ROUBLESHOOTING This section lists se veral situations that could happen while using the FN10, and suggests appropriate action. Because e very situation is potentially unique, the correcti ve actions suggested here should be considered as guidelines only . 6.5.1 FN10 Does Not P ower Up If [...]

Chapter 6: FN10 Diagnostics and T roub leshooting P age 6-8 F ast Network 10 User Guide 6.5.3 FN10 Has Rebooted • Use the LCM ident command to check the FN10 diagnostic codes, and call your authorized Cabletron Systems representati ve. 6.5.4 FN10 Does Not Respond to NMS • Check the port status using LCM. • Check to see if the Spanning T ree t[...]

F ast Network 10 User Guide P age A-1 APPENDIX A T ECHNICAL SPECIFICATIONS A.1 FN10 SPECIFICATIONS Ph ysical Height 1.75 in (4.45 cm) (1 u ) W idth 17 in (43.18 cm) Depth 15.75 in (40 cm) W eight 9 lb (4.1 kg) Installation options T abletop or rack-mount Electrical Input v oltage Auto-ranging from 100-120, 200-240 V ac Frequency 50/60 Hz A C po wer[...]

Appendix A: T echnical Specifications P age A-2 F ast Network 10 User Guide Bridging T echnologies • IEEE 802.1 Part D • IEEE802.2 (Logical Link Control) • IEEE 802.3 (CSMA/CD, 10B ASE-T) • T ransparent Bridging with Spanning T ree • Ethernet V ersion 2 • EIA RS232C (DTE-to-DCE Interface Specification) • EIA RS-310-C (Rack-mount Spe[...]

Serial Cable Pin Assignments F ast Network 10 User Guide P age A-3 A.2 SERIAL CABLE PIN ASSIGNMENTS For a PC running a W indo ws terminal connected to the RS232C Netw ork Management Port on the front panel of the FN10, the follo wing serial cable pin assignments are required to manage the FN10 using the Local Console Manager (LCM). A.3 10B ASE-T PI[...]

Appendix A: T echnical Specifications P age A-4 F ast Network 10 User Guide A.4 STRAIGHT-THROUGH WIRING If the twisted-pair link segment is to join tw o ports on a switch, and only one of the ports has an internal crossov er , the two pairs of wires must be straight-through, as sho wn in T able A-2. a. The “+” and “-” signs are used to rep[...]

Cr ossover Wiring F ast Network 10 User Guide P age A-5 A.5 CROSSO VER WIRING T wo FN10s can communicate only if the transmitter on one unit is connected to the recei ver on the other unit. This rev ersal, or crossover function, can be implemented either in the wiring or in the de vice itself. When connecting FN10s, a crossov er must be implemented[...]

Appendix A: T echnical Specifications P age A-6 F ast Network 10 User Guide[...]

Appendix B: Glossar y F ast Network 10 User Guide P age B-1 APPENDIX B GLOSSARY address A set of characters that uniquely identifies a station, peripheral de vice, node, or other unit in a network. address tab le A database of de vice addresses and their associated ports maintained by a switch or bridge for use in making data packet forw arding an[...]

Appendix B: Glossar y P age B-2 F ast Network 10 User Guide A UI (attachment unit interface) A standard connector type used for Ethernet connections. bac kbone The major , central transmission path for a network. A backbone usually handles high-v olume, high-density traf fic. T ypically a backbone connects v arious LANs into an integrated netw ork[...]

Appendix B: Glossar y F ast Network 10 User Guide P age B-3 concentrator A de vice that provides attachment points for stations that are not connected to the FN10. The concentrator is connected directly to the network; the stations connect to the concentrator . congestion A condition where a portion of the network is o verloaded with more data than[...]

Appendix B: Glossar y P age B-4 F ast Network 10 User Guide EIA (Electr onic Industries Association) Or ganization that sets standards for electrical interfaces (connectors). encapsulation A method for moving messages across netw orks that use dif ferent types of protocols. The message is encapsulated (rather than translated), so it can mov e acros[...]

Appendix B: Glossar y F ast Network 10 User Guide P age B-5 full wire speed Refers to packet forw arding at the maximum rate at which data can be transmitted on a gi ven LAN. ICMP (Internet contr ol message protocol) An auxiliary protocol of IP used to con ve y advice and error messages about e vents in the IP layer . IEEE (Institute of Electrical [...]

Appendix B: Glossar y P age B-6 F ast Network 10 User Guide internetw orking The linking of one or more networks to f acilitate communication across networks. inter operability The ability of equipment from multiple vendors to e xchange information using standardized protocols. IP (Internet pr otocol) IP is the basic datagram protocol used at the n[...]

Appendix B: Glossar y F ast Network 10 User Guide P age B-7 local traffic T raffic within a gi ven netw ork segment. MA C (media access control) The data link layer sublayer responsible for scheduling, transmitting, and recei ving data on a shared medium local area network. mask Specified a subset of a lar ger set of data to be included for comp[...]

Appendix B: Glossar y P age B-8 F ast Network 10 User Guide pac ket A group of bits including data and control elements arranged in a specific format that are transmitted and switched as a composite whole. Control elements include a source address, destination address, frame control and status indicators, and a Frame Check Sequence (FCS). PDU (pr [...]

Appendix B: Glossar y F ast Network 10 User Guide P age B-9 RARP (rever se address resolution protocol) A protocol that binds MA C addresses to specific IP addresses. RISC (Reduced Instruction Set Computing) A data processing technology in which functions are performed using the least possible number of instructions to yield very f ast processing.[...]

Appendix B: Glossar y P age B-10 F ast Network 10 User Guide synchr onous transmission A transmission technique in which an uninterrupted block of data is transmitted, using no redundant information such as stop and start bits to identify the beginning and end of a unit of data. TCP/IP (transmission contr ol protocol/Internet pr otocol) Internetwor[...]

F ast Network 10 User Guide Index-1 INDE X Numerics 10BASE-T pin assignments A-3 5 - 4 - 3 rule A-5 802.1D Spanning Tree 3-9 A adding filters 5-20 IP addresses 3-3 address table dynamic entry 1-10 size A-2 address table filters about 5-2 destination address 5-4 source address 5-3 source address multicast 5-3 addresses adding IP 3-3 deleting IP 3-4 [...]

Index Index-2 F ast Network 10 User Guide overview 6-1 power-up 2-6, 6-1 disabling bridging functions 3-6 ports 4-15 trunking 3-9 displaying baud rate 4-19 bridge functions 3-6 FN10 status 4-9 IP addresses 3-4, 4-13, 4-17 MAC addresses 4-12 manufacturing information 4-14 Document Conventions 1-3 dynamic entry Bridge Address Table 1-9 E enabling bri[...]

Index F ast Network 10 User Guide Index-3 bridge 3-5 community 3-15, 4-18 disable 4-15 enable 4-16 erase 3-2 exit 1-19 ident 4-14 ipaddr 3-4, 4-13 logout 1-19 reboot 4-19 status 4-9 trunk 3-9 LED sequence power-up 6-2 linking filters 5-6 little-endian 4-13 LLC Type 1 test packets 6-4 Local Console Manager. See LCM 1-15, 4-1 local traffic defined 1-[...]

Index Index-4 F ast Network 10 User Guide SNMP statistics 4-2, 4-7 source range 5-7 Spanning Tree algorithm 1-8 specifications electrical A-1 physical A-1 static entry Bridge Address Table 1-10 statistics Ethernet port 4-4 gathering 4-3 MAC 4-6 overview 4-2 SNMP 4-7 system 4-3 traffic analysis 4-7 status, displaying 4-9 straight-through wiring A-4 [...]