Proteon Software Release Notes for GlobeTrotter Series

The GlobeTrotter 70 Router With OpenROUTE 2.1 [R3]

Part No. 42-048051-00

Revision B, August 1996

Introduction

This document is for the GlobeTrotter 70 router. Please save this document with your copy of the GlobeTrotter 70 and 72 Getting Started Guide. The software for the GlobeTrotter 70 is based on OpenROUTE 2.1 router software, and is compatible with released versions of Proteon router software.

Contents

1. New Products, GlobeTrotter Series
2. Corrected Problems
3. Corrections to Documentation
4. Known Deficiencies, Limitations, and/or Clarifications in the Software

NOTE: The information in this document is subject to change without notice and should not be construed as a commitment by Proteon, Inc. Proteon, Inc. assumes no liability for any errors that may appear in this document.

The software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license.

Copyright 1996 by Proteon, Inc.

OpenROUTE is a trademark of Proteon, Inc. Proteon is a registered trademark of Proteon, Inc.

1. New Products, GlobeTrotter 70 Series

Internet Access - The ISP Connection

With the addition of async dialup capabilities on the GlobeTrotter 60 product, and now ISDN connectivity with the GlobeTrotter 70, Proteon expands its offerings targeted at the Internet access market. While many businesses today attach to the Internet via Frame Relay or leased lines, there are many businesses that consider Internet access a dialup function: one that needs to be provided intermittently and not on a dedicated basis.

The major difference between those using dialup connections versus those using dedicated lines is the difference in how these businesses utilize the Internet. Those connecting via dedicated lines generally do so to maintain an Internet presence; that is, they either have a Web Server containing product and company information to which they wish to provide others access or they use the Internet as the basis for their own networking infrastructure. Those connecting via dialup lines do so because they use the Internet on an intermittent basis, meaning that they dial up every so often to obtain whatever information they require.

The new GlobeTrotter 70 remote access routers provide shared dialup LAN access at very high speeds using a very cost-effective WAN service, ISDN. Like the original GlobeTrotter 60 Series, the GlobeTrotter 70 is designed to ISP specifications, providing high performance, security, and WAN optimization features, at the best price.

Product Description

The GlobeTrotter 70 includes 1 MB of flash memory for system load storage, and 2 MB of DRAM to run the system software and maintain routing tables. The unit has a compact form-factor, a single Ethernet connection, an ISDN WAN connection, and a console port for out-of-band management. The GlobeTrotter 70 ISDN routers feature the following:

Hardware Features

    68360 Processor                                                        

    One 10BaseT Ethernet LAN port for either shielded or unshielded        
    twisted pair (software selectable)                                     

    One ISDN BRI WAN port with the ability to support up to two data       
    channels & one data channel, 64 Kbps                                   
    per channel connections, or a single connection with speeds up to 128  
    Kbps                                                                   

    A choice of ISDN U or S/T interfaces                                   

    Console port for out-of-band management                                

    Four front panel lights indicating diagnostic conditions and traffic   
    flow, and three back panel lights                                      
     indicating ISDN B and D channel activity                              

    Media and installation manual                                          

    AC 110/220 volt universal power supply                                 

    Factory-installed software  specific to GlobeTrotter system's          
    application                                                            

    Boot code is V1.10                                                     

Software Features

    Static and dynamic IP routing                                          

    IP address filtering and antispoofing for security                     

    PAP and CHAP user authentication services                              

    UDP Broadcast                                                          

    ISDN Caller ID security                                                

    Multilink PPP for B-channel aggregation (PFC and ACFC support)         

    WAN optimization features such as dial-on-demand and bandwidth on      
    demand                                                                 

    Stac Data Compression                                                  

    Plug-and-play hardware installation with preloaded routing software    

    A Graphical User Interface (GUI) that can be used either locally or    
    remotely to easily configure the system                                

    A Command Line Interface for configuration by service providers who    
    prefer command line syntax                                             

    Quick Config  menu/prompting configurator program                      

    Point-to-Point Protocol (PPP) and Multilink PPP for inverse            
    multiplexing                                                           

    Standards-based interoperability with ISP existing backbone            
    equipment, including the Ascend Max                                    

    Graphical User Interface Version 3.1                                   

Ease-of-use Features

The GlobeTrotter features preloaded software for quick and easy setup. Configuration is easy using the GlobeTrotter Setup Utility, a graphical setup utility Proteon designed for the GlobeTrotter Series. The Microsoft Windows-based graphical setup software works on PCs and guides you for Internet addresses, subnet masks, and dialup WAN interfaces. Once entered, the unit is ready to connect to any IP-based network. The GlobeTrotter Setup Utility comes on a floppy disk and runs on any x386 or higher machine with an IP stack running Microsoft Windows V3.1 and above. A Command Line Interface and Quick Config are also included as options, for those users who prefer this style of configuration, and those who do not run Microsoft Windows.

NOTE: When using either the Command Line Interface or Quick Config, please ensure your console connection to the GlobeTrotter is set for 9600 baud, 8 data bits, 1 stop bit, and no parity. Settings other than this will result in garbled data display reported through the console.

Factory-loaded software, SNMP management, Telnet, and TFTP all add ease-of-use features to the GlobeTrotter Series. There is documentation specifically for the GlobeTrotter Series that quickly and easily steps you through the router's setup using the graphical utility.

Internet or Interoffice Configurations

New Proteon GlobeTrotter 70 systems provide LAN users with cost-effective shared access to the Internet and to other remote offices. Designed per ISP (Internet Service Provider) specifications, the GlobeTrotter 70 provides Internet access through a single, low-cost LAN attached device. Through a LAN connection, any network attached PC or workstation with IP client software can send and receive e-mail, download files through the use of FTP transfers, join any of the thousands of business-related newsgroups, and browse the vast amount of information available on the World Wide Web (WWW).

Example

GlobeTrotter 70 to Internet Service Provider

Configuration

Features and Benefits

Feature                              Benefit                               

Shared LAN Internet access           Amortizes cost of accessing today's   
                                     popular network service               

Multilink PPP                        Maximizes ISDN WAN service            
                                     investment                            

Split-B channel                      Enables connection to two separate    
                                     sites simultaneously                  

Dial-on-demand                       Utilizes services only when needed -  
                                     keeps costs down                      

Bandwidth-on-demand                  Utilized ISDN B channels based on     
                                     Traffic demand                        

PAP and CHAP authentication          Network security                      

Interoperability with ISP's          Protects your investments             
equipment                                                                  

Graphical configuration utility      Configured easily by less             
                                     experienced users                     

Factory-loaded, application          Router installs easily by less        
specific software                    experienced users                     

Lowest cost of its type in the       Affordable                            
industry                                                                   

Part of a comprehensive              Provides you with a solution no       
internetworking family               matter what your need                 

SNMP support                         Managed by popular SNMP management    
                                     systems                               

Stac Data Compression                High Performance                      

Proteon extensive warranty and       Eliminates risk of failure and        
support                              protects customer investment          

GlobeTrotter 70 Router with OpenROUTE 2.1

Interoperability Test Matrix

GlobeTrotter 70   Applicable   Cisco   Bay AN  Ascend   Ascend  Motorola  
    Supported                  2503            Pipeline         Bitsurfr  
    Features       Proteon      Rel      Rel      400     MAX      Pro    
                   Routers     10.03     8.3     Rel     1800             
                   Rel 16.1                     4.5B+     Rel             
                                                         4.6A             

General                                 Note                              
Information                              #2                               

                                                                          

PHYSICAL                                                                  

     Ethernet                                                      N/A    

     ISDN BRI                                                             

                                                                          

DATA LINK                                                                 

        PPP                                                      Note #4  

        MP                               N/T                     Note #4  

        CCP                   Note #1   Note   Note #3   Note      N/A    
                                         #2               #3              

        BOD                              N/T                              

                                                                          

ISDN                                                                      

   Split-B                               N/T                              
Channel                                                                   

                                                                          
Dial-On-Demand                                                            

   Call                                                                   
Direction                                                                 

       In                                                          N/A    

       Out                                                                

                                                                          

SECURITY                                                                  

    PAP                                                                   

    CHAP                                 N/T                       N/A    

    PAP & CHAP                Note #1    N/T   Note #3   Note      N/A    
                                                          #3              

    IP Filters                  N/A      N/A     N/A      N/A      N/A    

    IP                          N/A      N/A     N/A      N/A      N/A    
Anti-Spoofing                                                             

                                                                          

PROTOCOLS                                                                 

    IP                                                                    

    RIP                                                            N/A    

    ARP                                                            N/A    

Interoperability Test Matrix (continued)

GlobeTrotter 70   Applicable   Cisco   Bay AN  Ascend   Ascend  Motorola  
    Supported                  2503            Pipeline         Bitsurfr  
    Features       Proteon      Rel      Rel      400     MAX      Pro    
                   Routers     10.03     8.3     Rel     1800             
                   Rel 16.1                     4.5B+     Rel             
                                                         4.6A             

    TCP                                                                   

    UDP                                                                   

    ICMP                                                                  

    STATIC                                                                
ROUTES                                                                    

- Passed the test.

- Did not pass the test.

N/A - Not Applicable.

N/T - Should work but was not covered during the qualification effort.

Notes:

1. PAP/CHAP: Cisco does not allow the calling router to initiate PAP, but will allow CHAP initiation by the remote calling couter.

CCP: When running software load 11.1 or below on the 2503 CCP would not interoperate with the GlobeTrotter 70. Beta load 11.2 that was generated as a result of the California ISDN Users Group (CIUG) ISDN PPP Interoperability Workshop on 5/20 to 5/24/96 corrected this problem. Contact Cisco for additional information.

1. General Info: The Bay AN will undergo additional tests post release.

RIP: In order to do RIP on the BAY AN router it must call out using Dial-on-demand.

CCP: The BAY AN does not support STAC compression.

1. CCP: The Ascend currently does not interoperate with the GlobeTrotter 70 using CCP because the Ascend products as of 5/20/96 only supported revision 5 of the CCP draft. The current revision of the CCP draft is 9. Contact Ascend for additional information.

PAP/CHAP: The Ascend will not let a Calling router initiate PAP or CHAP.

1. PPP/MP: A GlobeTrotter 70 being Called by a BitSURFR must have the PPP config NAK retries set to 3, or disable Magic Number. Note the BitSURFR Pro can only make out going calls.

Tech Tips

The Proteon GlobeTrotter ISDN systems support the following country switches:

Country          Switch                                                   

North American   USNI1, USNI2, AT&T 5ESS, Northern Telecom DMS-100 notes  
                 # 1                                                      

Europe           European ETS1 NET3, France VN3, Siemens (with NT-1       
                 connection) note # 2                                     

Japan            INS64                                                    

Australia        AUS (future availability)                                

Notes:

1. Multidrop is not supported at this time
2. Siemens switch is not suported as a direct connection

The following NT1 devices have been tested with the GlobeTrotter 70: Motorola NT1D, IBM 7845-001, and AdTran NT1 ACE. Other NT1 devices are available.

Multilink PPP or Split-B Channel

The GlobeTrotter 70 supports the use of the two 64 Kbps B channels as either two separate lines or aggregated as one via Multilink PPP. Many users want bonding or inverse multiplexing. Bonding was the old, hardware way of providing higher throughput over the ISDN line, using the two lines as essentially one. Inverse multiplexing is the method provided by Ascend to do a similar service through software. Multilink PPP provides a similar function through software, but is the industry-standard and preferred method of providing for the aggregation of B channels.

Split-B channel connectivity, however, may be very desirable for some users. The ability to connect simultaneously to two different sites at the same time provides them not only with Internet access, but also with remote site access, all from one small, inexpensive box. Few competitors provide this capability or do it well.

Ordering Information

When placing an order for a GlobeTrotter 70, simply order the appropriate model number. Orders for U interface models ship with a U.S. power cord. S/T interface models ship without a power cord unless requested.

Model Description

RBX70U-E2 GlobeTrotter 70, IP, 10BaseT, integrated NT-1 U interface

RBX70S-E2 GlobeTrotter 70, IP, 10BaseT, S/T interface

Cables

The GlobeTrotter 70 supports standard RJ-45 ISDN cables provided by Proteon. (P/N 12-003120-03)

The GlobeTrotter 70 ships with a 9 pin to 9 pin null modem console cable as well as an optional 9 pin to 25 pin modem console cable.

Documentation

Each GlobeTrotter 70 ships with the GlobeTrotter 70 and 72 Getting Started Guide that instructs the user on how to install the product and how to use the GlobeTrotter Setup Utility to configure it. The printed OpenROUTE documentation set and the CD-ROM are available for those customers who are interested in more advanced configurations of Proteon routers, as well as providing the complete command line instruction set. Proteon recommends that each ISP who is providing GlobeTrotter systems purchase at least one OpenROUTE printed documentation set for reference

Model Description

p4391V2.1-sp OpenROUTE Documentation Set Printed Copy

p4956-g OpenROUTE Documentation Set CD-ROM

Additional GlobeTrotter Products

GlobeTrotter 60

The GlobeTrotter 60 is based on IP with access control and antispoofing for added security. New with the GlobeTrotter 60 is Dialup Serial Interface (DSI) for asynchronous and synchronous RS-232 communication, including synchronous V.25 bis communication through the general switched telephone network. Additional software features include PAP and CHAP security features, RIP, ARP, PPP, and Frame Relay. The current version of the GlobeTrotter 60 software is OpenROUTE 2.0a [R2]. For proper interaction with the GlobeTrotter Setup Utility software, use version 2.0. The current revision of the boot code for the GlobeTrotter 60 is V1.1.

GlobeTrotter 62

The GlobeTrotter 62 builds on basic IP routing of the GlobeTrotter 60 with multiprotocol, standards-based bridging and routing capabilities. The GlobeTrotter 62 runs many of the industry's most popular protocols TCP/IP, IPX, and AppleTalk 2 and forwards nonroutable protocols using transparent bridging services. The GlobeTrotter 62 is a perfect fit for multiprotocol branch office communications, distributed LAN-to-WAN connectivity, and remote LAN to corporate internetworking. The current revision of the GlobeTrotter 62 software is OpenROUTE 2.0a [R1] and does not support the new DSI function. For proper interaction with the GlobeTrotter Setup Utility software, use version 1.0. The current revision of the boot code for the GlobeTrotter 62 is V1.1.

GlobeTrotter 100

The GlobeTrotter 100 supports all of the protocols of the GlobeTrotter 60 and 62 and more. In addition to IP, IPX, and AppleTalk, it supports antispoofing, filtering, OSPF, MOSPF, ARP, DLSw MAC Filtering, Bandwidth Reservation, ASRT Bridging, and NetBIOS Name Caching/Filtering. The GlobeTrotter 100 provides a 4 port Ethernet repeater and 2 WAN ports. The WAN ports support RS-232, V.35, and X.21 cable types with up to T1/E1 speeds and datalink protocols PPP, Frame Relay, V.25 bis and X.25. The current revision of the GlobeTrotter 100 software is OpenROUTE 2.0a [R1] and does not support the new DSI function. The current revision of the boot code for the GlobeTrotter 100 is V1.11.

GlobeTrotter Access Manager

The GlobeTrotter Access Manager provides a full-featured, interoperable IP software suite that supports remote GlobeTrotters and other popular, industry-standard Internet access devices as well. Internet Service Providers will find the GlobeTrotter Access Manager the lowest cost, highest performing Internet point-of-presence platform on the market. Available interfaces include quad Ethernet, dual Token Ring FDDI and quad WAN. The current revision of the GlobeTrotter Access Manager software is OpenROUTE 2.0a [R1] and does not support the new DSI function. The current revision of the boot code for the GlobeTrotter Access Manager is V1.0.

NOTE: If one of the two power supplies of the GlobeTrotter Access Manager is powered off during system initialization, a diagnostic failure "Bad ISR" will be reported during the operation of powerup diagnostics. You can ignore this message. It does not indicate a true failure.

2. Corrected Problems

• The PPP defauls have been updated to include the ACCM screen modification. See Corrections to Documentation for a list of all PPP defaults.

• Unnumbered IP is enabled regardless of the rip-extensions. Packets that are unicasts destined for the router but which arrive over an unnumbered interface and are addressed to on of the other addresses in the router are now recognized as being for the router.
• When the interval timer is used, and the timer has expired, the modem connection is dropped and the user is properly logged out.

3. Correction to Documentation

The following corrections have been made to the GlobeTrotter 70 and 72 Software Guide.

LCP Parameters Current New

Config Request Tries: 20 10

Config Nak Tries: 10 5

Terminate Tries: 10 2

Retry Timer: 3000 NC

LCP Options

Max Receive Unit: 2048 1500

Magic Number: yes no

Async Control Char. Map (ACCM): 0 NC ( Prompt wording changes )

Protocol Field Comp(PFC): No Yes

Addr/Cntl Field Comp(ACFC): No Yes

Echo Requests: ENABLED DISABLED

CHAP Parameters

CHAP Authentication: Disabled NC

Local Name: <hostname> NC

Challenge tries: 20 10

Challenge timeout(mSec): 15000 NC

Response timeout(mSec): 3000 NC

Challenge Algorithm: RSA Data Security,Inc. MD5 Message-Digest Algorithm

CHAP Secrets

Router Secret

PAP Parameters

PAP Authentication: Disabled NC

Local Name: <hostname> NC

Local Password: NONE!! NC

Warning: This router will not use PAP to authenticate itself to other routers because no password has been added for the local router name 'GT70-2'

Max Request Timeouts: 20 10

Request Timeout(mSec): 15000 NC

Retry Timout(mSec): 3000 NC

PAP Passwords

Router Password

NCP Parameters

Config Request Tries: 20 10

Config Nak Tries: 10 5

Terminate Tries: 10 2

Retry Timer: 3000 NC

IPCP Options

IPCP Compression: None Yes

Compression slots N/A 16

IP Address: Don't Send or Request NC

Multilink PPP Configuration

MP: Disabled NC

Initial MP bundle size: 1 NC

Maximum MP bundle size: 1 2

Discriminator: Default NC

Sequence Number Length: Long Short

Bandwidth-on-Demand: OFF FAST

High-Utilization Threshold: 70% NC

Low-Utilization Threshold: 35% NC

CCP Options

Data Compression disabled NC

Algorithm list: Stac-LZS NC

Stac: histories 1 NC

Stac: check_mode SEQ NC

4. Known Deficiencies, Limitations, and/or Clarifications in the Software

GlobeTrotter 70

• The GlobeTrotter 70 does not have a time of day clock chip with battery backup. For time to be meaningful, you have to get the time from a nearby host. The Time commands in Talk 6 allow for this operation. This will have to be done at restarts.

• When establishing a miltilink connection to an Ascend Max, the GlobeTrotter 70 must be configured with MP Enabled, MP descriminator set to generate. At the PPP Config> set MP to discriminate generate. The PPP MRU value on the GlobeTrotter 70 must be less then or equal to the Ascend's MRU value.

• When MP is disabled on the GlobeTrotter 70 and enabled on a Cisco 2504, the PPP link never fully negotiates for IP routing. When MP is enabled on both the GlobeTrotter 70 and the Cisco the PPP link correctly negotiates the IP routing.

• Calls from the GlobeTroter 70 to the Ascend 400, with 4.5B+ firmware, fails to negotiate PPP successfully when Multilink PPP is enabled on both systems. Proteon has found two workarounds.

1. To work around this problem make sure that the Ascend 400 has PPP Recv Auth=CHAP and CLID Auth=Ignore set in the PPP options menu under the answer menu.
2. Make sure the Ascend has PPP Recv Auth-CHAP and CLID Auth=Perferred set in the Answers menu. Then set Calling # in the Connections menu to null on the Ascend.

• When using either the Command Line Interface or Quick Config, please ensure your console connection to the GlobeTrotter is set for 9600 baud, 8 data bits, 1 stop bit, and no parity. Settings other than this will result in garbled data display reported through the console. If you change the baud rate, then the baud rate on your console device should be matched to that new baud rate in the configuration memory. If you clean your configuration, the console baud rate is reset to the defauld baud rate of 9600.

• When you dynamically disable SNMP at the + prompt (talk 5), the software shows SNMP as disabled, but the GlobeTrotter Setup Utility and other tools can still access the router.

• You should increase any table sizes with caution and understanding of the routing environment and available memory on the router.

• Before the GlobeTrotter 60, all Proteon routers that supported dial circuits used a proprietary protocol, known as the Line ID protocol, to identify the calling router to the called router. The GlobeTrotter 70 does not support the Proteon proprietary Line ID protocol. The GlobeTrotter 70 is designed for connection to ISPs where more powerful forms of authentication - PAP, CHAP and caller ID - are prevalent.

• If the ISDN switch providing the connection supports caller ID authentication the WAN Manager Access List should be set to the name of the remote router(s), as configured in the ISDN Address List.

• If the ISDN switch providing the connection does not support caller ID and the GlobeTrotter 70 is not configured for authentication (PAP, CHAP) then the GlobeTrotter 70 must have the WAN Manager Access List set to ANY_INBOUND.

• The maximum number of dial circuits that you can configure on a GlobeTrotter 70 is 8. Attempting to configure more than 8 dial circuits on a GlobeTrotter 70 causes the router to exhaust available memory and crash during initialization. If you configure more than the maximum number of dial circuits and cause the router to crash, you have to clear your configuration before reloading unless you have saved a configuration with no more than the maximum number of dial circuits.
• Interoperability testing of CCP between the GlobeTrotter 70 and Cisco 2504 or the Ascend 1800 have not been successful. All three interpret the CCP data compression PPP standards differently. Proteon implemented version 9 of the IETF draft for PPP CCP compression. Cisco and Ascend implemented older versions. Check with Cisco and Ascend on when they will support the newer version 9 draft standard.

• The timeout configuration parameter of the add dump-entry command should be left at its default value of 10. Large values (such as 120 seconds) cause crash dumps to sometimes not complete.

• If your GlobeTrotter 70 is dialing into a Cisco ISDN router, and you are planning on running RIP over the ISDN circuit, make sure to include the broadcast option in the Cisco's dialer map configuration line for the connection to the GlobeTrotter 70 and both routers negotiates a long sequence number length.

• The Ascend MAX/PipeLine only negotiates an MP long sequence number length. If the GlobeTrotter is configured for a short sequence number, then the Ascend MAX/PipeLine sends a LCP: reject to the GlobeTrotter 70, and then both routers negotiate a long sequence number length.

• Cisco routers (and some other vendor's routers) do not allow the router dialing in to request PAP authentication. You must have PAP on the GlobeTrotter 70 disabled to dial into their routers. If the remote router requests PAP, the GlobeTrotter 70 still replies correctly even though PAP is disabled, providing the remote router name and password are configured in the GlobeTrotter 70 PAP password table.

• The Ascend routers do not use an IP network address on the ISDN ports. When configuring the GlobeTrotter 70 to dial into the Ascend router, the GlobeTrotter 70 ISDN interface IP address should be set to be on the same IP subnet as the Ascend Ethernet interface. Also, at the PPP Config> prompt on the GlobeTrotter 70, under the set IPCP command, set Send our IP address and Request their IP address to no. If you're configuring a static gateway route, you would use the same gateway that the Ascend would use to get to remote networks. In addition, make sure the Ascend's Ethernet profile has proxy ARP enabled.

• If you are using Netmanage Chamelion IP to dial into a GlobeTrotter 70 using the Motorola BitSURFR PRO (this is the IP stack supplied with the BitSurfr), you have to enable PPP PAP on the GlobeTrotter 70 and configure a name and secret for the Chameleon PC. On the PC, this name and password/secret is configured in the Custom icon under the Setup->Communication->Login menus.

• The GlobeTrotter 70 has sophisticated call collision logic within its Multilink PPP engine that normally assembles a Multilink bundle of two ISDN B channels even when two GlobeTrotter 70s call each other simultaneously. However, that software requires each GlobeTrotter 70 to know the identity of the other router. Therefore, when two routers are both enabled to place outbound calls to each other, then ISDN caller ID, PPP PAP, or PPP CHAP must be enabled so the two routers can correctly identify each other. If none of these authentication mechanisms are enabled, then one of the two calls is refused and call retries will begin. This can cause some "thrashing" as call collisions continue to occur while the second B channel is brought up.

• Interoperability testing with the Cisco 2500 Series uncovered a bug in a Cisco product. If the ISDN call from the GlobeTrotter 70 to the Cisco 2500 Series is abruptly terminated, then, when the call is re-established, the Cisco occasionally sends a packet using a Multilink PPP sequence number from the previous call. This is invalid behavior. The GlobeTrotter 70 quicklly responds to the problem, but in the process the GlobeTrotter 70 will discard a few packets to resychronize.

• The GlobeTrotter 70 supports PPP PAP and CHAP authentication. If the GT70 is enabled to authenticate another router using PAP and CHAP then the GlobeTrotter 70 requests CHAP first and then allows the remote router to use PAP if it does not support CHAP.

• The GT70 can not fall back from CHAP to PAP when another router is the authenticator because, by PPP specification, if a router (like the GT70) supports CHAP, and the other router asks for CHAP, the first router (GT70) must use CHAP.

• This may cause some confusion if the user configures a PAP password on the GT70 and then enables PAP and CHAP on the other router. When the other router asks for CHAP, the GT70 will comply, but then PPP authentication fails because the GT70 does not have a CHAP secret.

• If PAP authentication is required, then the other router (of any brand) must only request PAP. Then the GT70 will complies and return the PAP password configured by the user.

• The GT70S implements support for sharing a common ISDN S/T bus with other ISDN devices. This is supported on all supported ISDN switch types, but the INS64 support, which was added last, has only had limited testing.

• Multiple devices, which share the S/T devices, must have unique ISDN sub-addresses. The sub-address used by the GT70 is specified as part of its directory number 0 and 1. For example, if the directory number is 18005551212 and the sub-address is 34, then the directory number specified to the GT70 is: 18005551212:34

• The GT70 Quick Config and GlobeTrotter Setup Utility do not ask for Directory Numbers for the INS64 switch variant because they are not required with INS64. Therefore, if sub-addressing is needed with an INS64 switch, it is necessary to enter the ISDN configuration menu and explicitly set the Directory numbers. For example:

• network 1
• isdn
• set dn0 :54

• Note that the directory number 0 has only a sub-address component which, in this example, is 54.

• Autobaud has been disabled in the GT70 boot code and router code. The baud rate defaults to 9600, but is manually selectable using the set baudrate configuration command.

• The interval timer is set up to log out a user for console inactivity equal to the interval period set. If the console is connected via a modem, the modem connection is dropped when the user gets logged out.

• Ascend MAX 1800: In recent interoperability tests between the GT70 and the MAX 1800 configured for a 2 bundle Multilink PPP connection (S/W release +4.6Ai12, BRI ports configured for USNI-1 Multipoint) it was found that 2 bundles of a Multilink PPP connection would come up and pass traffic but the link would go down after a few minutes, a Q931 analyzer reports "Normal Call Clearing" and the MAX 1800 reports "Call Cleared/L1 Change". If the MAX 1800 is reconfigured for AT&T 5ESS Point-to-Point and the switch re-provisioned for the same, both bundles of the Multilink PPP connection come up and stayed up. Ascend Communication has been notified of the issue and a solution is being sought.

GlobeTrotter Setup Utility

• If the GlobeTrotter Setup Utility (GTCFG) installation fails due to lack of disk space, the GTCFG failure message does not clearly indicate that this is the case. The message is Setup Error; could not write file C:\GTCFG\GTCFG.EXE and indicates that there is insufficient space on the target disk. There should be a minimum of two megabytes of free disk space available for successful installation of the GlobeTrotter Setup Utility.

To set up installation of terminal program and .trm file if you are presented with the following error message when activating the Terminal icon,
click OK and then select the Settings Menu and choose Communications. The Data Bits parameter should be set to 8 and Stop Bits to 1. This should then operate properly. Save the settings under the File Menu.

• When you are exporting the configuration to a PC file, there is no warning that a file already exists on the target drive. Be sure in advance that you are not writing over an important existing file.
• In the IBD Manager, if a copy to IBD fails because of the lack of sufficient IBD blocks, the Router/GTCFG system may not handle the situation properly. The GlobeTrotter Setup Utility reports TFTP Request failed, No Response, Timeout, and the router may be left with uninitialized IBD blocks. These have to be erased by the operator at the Command Line Interface on the router.
• In the IBD Manager, when copying a file from or to the IBD, the Select File window lacks a scroll bar to bring other filenames into view. You must click on a name in the list and then use the arrow and page up/down buttons to find the filename you want. Just locating the entry does not put it into the Filename window, you must click on it or hit the space bar. When the filename you want appears in the upper window, press the Return key to complete the operation on that filename.
• In the IBD Manager, when using the get option there is no warning when copying to a filename that already exists on the target drive. So be sure in advance that you are not writing over an important existing file.
• Under Windows 95, the installation does not set up the Applications icon on your desktop. The icon is available in the installed directory (gtcfg.ico).

• Acknowledge and dismiss all GlobeTrotter Setup Error message dialog boxes before continuing on. Extraneous dialog boxes may produce unexpected results.

• Proteon recommends that you use the latest winsock.dll available (if using the network to configure the router), preferably a version dated 4/25/94 or later.

• When using the IBD Management Utility to list, get, put, or delete IBD information, do not interrupt the process by closing the application or exiting Windows, nor should you disable the routers interface while the application is executing. This may cause problems with the router's IBD that contains the routers hardware and software configuration.

• You may add usernames and passwords to limit access to the routers console port from either the GlobeTrotter Information screen or from selecting the User List icon in the Advanced Configuration Options screen. In either case, if the user is given Administrator permission, Console Login will automatically be enabled when you export the configuration to the router. The Enable Console Login check box in the User List screen can still be used to get the same effect as well as to enable Console Login for other level of user permissions.
• When configuring PAP local Host Name and Password in the PPP folder of the Configure ISDN Circuit screen, you will notice that the default PAP host name for each circuit is the router's host name as seen in the Advanced Configuration Options screen. If you choose to use the same PAP host name for multiple ISDN circuits, you only need to enter the PAP host name's corresponding PAP password to one of the circuits. The PAP password will not be visible in the PAP password field of the successive ISDN circuits with the same PAP host name. If you enter a new PAP password that corresponds to a PAP host name used for many circuits, the password is now changed for all of these circuits.
• The default type of PPP data compression error detection is not set correctly by the GlobeTrotter Setup Utility configuration utility. The value selected by the GlobeTrotter Setup Utility is "CRC" when it should be "SEQ". This may reduce router performance slightly and it may not be interoperable with other vendor's equipment. (Based on current standards, SEQ is mandatory but CRC is only optional)
  
  NOTE: This problem does not occur if the router's Quick Config or console command line is used to configure the router. It is only applicable to the GlobeTrotter Setup Utility.
  
  The work-around for this problem is to explicitly set the compression control protocol while configuring PPP with the GlobeTrotter Setup Utility. Enter the PPP configuration under your ISDN circuit. Then select Control Protocols card tab. In the lower left corner of that screen, there is a section on PPP Compression Control. Click the arrow next to CRC to display a list of available options and then select SEQ.
  
  Remember to save this configuration and export it to the GlobeTrotter 70 router.

• The GlobeTrotter Setup Utility currently does not do range checking on input values. The Operator is advised to exercise caution when entering numeric values. Be sure the values are within the allowable ranges the GlobeTrotter software requires. You can find out these ranges from the online Help of the GlobeTrotter Setup Utility by pressing F1 when the cursor is in the entry box for that value.