Table Of Contents
Release Notes for the FastHub 400 10/100 Series, Firmware Version 1.00.08
These release notes include important information about the FastHub 400 10/100 series (hereafter referred to as the FastHub 400) and any limitations, restrictions, and caveats that apply to it.
For the complete list of FastHub 400 10/100 series documentation, see the "Related Documentation" section.
The tracking numbers for some items in this document are added for your convenience.
The installation and configuration guide incorrectly lists the CISCO-SIBU-SIMPLE-UPGRADE-MIB.my MIB as a supported MIB. The hub does not support this MIB.
In Firmware Version 1.00.03, the enable password must have between four to seven alphanumeric characters. The string can include all alphanumeric characters except a space or a question mark and is case sensitive.
The FastHub 400M can store up to 4096 MAC addresses in memory. The optional switched uplink modules can store up to 1536 MAC addresses. If there is excessive flooding of unicast packets on these devices, your hub or module might have reached its maximum. To clear the MAC address table, power-cycle the hub. (CSCdk90641)
•Some 400 FastHubs have improperly terminated 100-MB TXEN signal lines at the extension port. If this problem occurs when no extension module is present, 100-MB data can be corrupted. Firmware version 1.00.02 and later detect the absence of an extension module and isolate the extension port from the hub.
•You must purchase and use the FastHub 400 stacking cable (part number WS-C400-CAB-EXP) to create a hub stack of interconnected FastHub 400 models. Do not use any other cable for this purpose. You can order this cable from your Cisco representative or reseller.
•A FastHub 400 does not support modem connections over a telephone line to a PC connected to another modem by a telephone line. To connect to a FastHub 400 by using a modem, see your modem manual for the correct configuration command syntax. (CSCdk83978)
•Before connecting a FastHub 400M model to a modem, configure your modem to ignore input from the data terminal equipment (DTE) during dial-out or dial-in. Without this precaution, there is a small chance that the modem could disconnect. See your modem manual for the correct configuration command syntax. (CSCdk83009)
When changing or moving units within a managed hub stack, note these configuration rules.
•The stacking cable connectors are lockable. When you insert the stacking cable, be sure that it snaps into place.
•The stacking cables are not hot-swappable. You must power down the hub stack before connecting or disconnecting a stacking cable. If you connect or disconnect a stacking cable while the power is on, power-cycle the stack to ensure correct stack-management operation.
•The primary management hub is referred to as the M1 hub. The secondary management hub is referred to as the M2 hub.
•The M1 hub continuously stores the configuration settings for these stack elements:
–The three hubs that it has most recently managed (whether or not the hubs are currently being managed).
–TX and FX switched uplink modules for itself and for each of the three hubs that it has most recently managed.
This means that if you remove a hub (other than the M1 hub) or module from the stack and later reinstall the same device, the M1 hub might reconfigure that device with its former configuration in the stack. Whether or not this happens depends upon whether the stored configuration for that particular device has been retained by the M1 hub or overwritten in subsequent changes.
In a stack of hubs where hub 1 is the FastHub 400 M1 hub and hubs 2, 3, and 4 are FastHub 400 unmanaged hubs, these conditions apply:
–If you remove hub 3 and replace it with a new hub (hub A), the new hub keeps its default configuration. (See Table 1.)
Table 1 Removing Hub and Replacing with New Hub
Original Stack Replaced with New Stack
Hub 1 (store M1)
Hub 2 (store 2)
(Hub 3) ---->
Hub A ---->
Hub 3 (store A: default)
Hub 4 (store 4)
–If hub 4 is removed for troubleshooting purposes and later reinstalled in the second position in the stack, the M1 hub recognizes the serial number of that hub as belonging to one of its saved configurations and applies the previously saved hub 4 configuration. (See Table 2.)
Table 2 Removing Hub and Reinstalling Same Hub
Original Stack Reinstalled New Stack
Hub 1 (store M1)
Hub 2 ------->
Hub 4 ---->
Hub 2 (store 4: saved)
Hub 3A ---->
Hub 3 (store 2: saved)
Hub 4 (store 3A: saved)
Clearing the NVRAM of a Management Hub in a Redundant Stack
To reset the NVRAM configuration settings of one or both management hubs in a redundant stack configuration, note the following guidelines.
Note The primary management hub is referred to as the M1 hub. The secondary management hub is referred to as the M2 hub.
•When a second FastHub 400 managed hub is added to a stack, the new hub, referred to as the M2 hub, learns the saved configuration settings for the stack from the M1 hub. If the M1 hub fails, the M2 hub becomes the new M1 hub in the stack, and uses the saved configuration of the old M1 hub.
•The delete nvram command only resets the NVRAM of the M1 hub. If an M2 hub is connected to the stack, the contents of the M2 hub NVRAM are immediately copied to the NVRAM of the M1 hub. To ensure that you reset the NVRAM of a FastHub 400, use one of these methods:
–To clear the NVRAM of the M1 hub, disconnect the stack cable between the M1 hub and the M2 hub, connect a console cable to the M1 hub, and use the delete nvram command.
–To clear the NVRAM of the M2 hub, disconnect the stack cable between the M1 hub and the M2 hub, connect a console cable to the M2 hub, and use the delete nvram command. (CSCdk91393)
•You must power down the stack before resetting either or both management hubs. To do this:
1. Disconnect the stacking cable from the management hubs that you want to reset.
2. Connect the hub to a management station.
3. Power on the hub, and access the command-line interface (CLI).
See the online FastHub 400 10/100 Series Command Reference for information about accessing the CLI. See the "Obtaining Documentation" section of this document for information about locating this document through Cisco.com.
4. Use the CLI delete nvram command to reset either or both management hubs to their default values.
See the online reference FastHub 400 10/100 Series Command Reference for more information about this command.
The management hub that is powered on first becomes the new M1 hub in the stack because by default, the hub with the longest up time is the M1 hub.
Note If you delete the NVRAM configuration settings for one management hub and not the other, be sure to first power on the management hub with the deleted configuration. This prevents the redundant management hub from copying its saved configuration to the hub whose configuration you just deleted.
These caveats were resolved in these releases:
Resolved Caveats in Release 1.00.08
This configuration caveat was resolved in Release 1.00.08:
The Cisco FastHub 400 is susceptible to Simple Network Management Protocol (SNMP) vulnerabilities. These vulnerabilities can be easily and repeatedly demonstrated with the use of the University of Oulu Secure Programming Group (OUSPG) "PROTOS" Test Suite for SNMPv1. The test suite is generally used to analyze a protocol and to produce messages that probe various design limits within an implementation of a protocol. Test packets containing overly long or malformed object identifiers and other combinations of exceptional values in various fields can be programmatically generated and then sent to a network device under test. The PROTOS test suite for SNMPv1, as distributed, contains approximately 53,000 individual test cases.
Further details are described in the advisory at this link:
Resolved Caveats in Release 1.00.06
This problem was resolved in Release 1.00.06:
You no longer lose connectivity across the uplink module when moving to a new port on the same FastHub 400 or to a port on a different FastHub 400.
Resolved Caveats in Release 1.00.04
This problem was resolved in Release 1.00.04:
An enable password is no longer limited to less than eight characters.
Resolved Caveats in Release 1.00.03
This problem was resolved in Release 1.00.03:
Using Cisco Discovery Protocol (CDP) with a FastHub 400M no longer occasionally locks the console.
These documents provide complete information about the hub and are available from this Cisco.com site:
•FastHub 400 10/100 Series Cabling and Start Up (not orderable, but available on Cisco.com)
•FastHub 400 10/100 Series Installation and Configuration Guide (order number DOC-785584=)
•Installation Notes for the FastHub 400 10/100 Series Switched Uplink Modules (order number DOC-786054=)
•FastHub 400 10/100 Series Command Reference (not orderable, but available on Cisco.com)
•FastHub 400 10/100 series Hub Manager online help (available on device)
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
You can access the most current Cisco documentation at this URL:
You can access the Cisco website at this URL:
You can access international Cisco websites at this URL:
Cisco documentation and additional literature are available in a Documentation DVD package, which may have shipped with your product. The Documentation DVD is updated regularly and may be more current than printed documentation. The Documentation DVD package is available as a single unit.
Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.
Cisco Ordering tool:
You can find instructions for ordering documentation at this URL:
You can order Cisco documentation in these ways:
•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Ordering tool:
•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 1 800 553-NETS (6387).
You can send comments about technical documentation to firstname.lastname@example.org.
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
From this site, you can perform these tasks:
•Report security vulnerabilities in Cisco products.
•Obtain assistance with security incidents that involve Cisco products.
•Register to receive security information from Cisco.
A current list of security advisories and notices for Cisco products is available at this URL:
If you prefer to see advisories and notices as they are updated in real time, you can access a Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you might have identified a vulnerability in a Cisco product, contact PSIRT:
•Emergencies — email@example.com
•Nonemergencies — firstname.lastname@example.org
Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product to encrypt any sensitive information that you send to Cisco. PSIRT can work from encrypted information that is compatible with PGP versions 2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one that has the most recent creation date in this public key server list:
In an emergency, you can also reach PSIRT by telephone:
•1 877 228-7302
•1 408 525-6532
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year, at this URL:
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
Note Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID or model name; by tree view; or for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
For a complete list of Cisco TAC contacts, go to this URL:
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:
•Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:
•Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:
•iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:
•Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:
•World-class networking training is available from Cisco. You can view current offerings at this URL:
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, TeleRouter, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0502R)
Copyright © 2002-2005 Cisco Systems, Inc. All rights reserved.