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Sun™ Quad FastEthernet™ PCI Adapter Release Notes

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1. Installation and User s Guide In order to boot a diskless client with a local Sun Quad FastEthernet PCI Adapter interface qfe the following tasks must be performed on the boot server Sun Quad FastEthernet PCI Adapter Release Notes 11 12 1 Go to your client s root partition by typing the following cd export root lt client name gt etec 2 Search the name_to_major file for Quad FastEthernet qfe entries grep qfe name to major If this file already has a Quad FastEthernet qfe entry skip to Step 4 If the name_to_major file does not contain a Quad FastEthernet qfe entry use a text editor to add an entry for the Sun Quad FastEthernet PCI Adapter device qfe If the major device number for the last file entry is n use n 1 for the qfe channel major device number As shown in the example below if the last entry for the major device number is 108 use 109 for the qfe device LCE O77 audiocs 108 qfe 109 Check the driver_aliases file for the pci_pci line required by the adapter grep pci_pci pcil011 25 driver_aliases If this line already exists in the driver_aliases file you can skip to Step 6 Otherwise you will need to add this line to the file before installing the adapter Using a text editor add the following line to the end of the driver_aliases file pci_pci pcil011 25 Check the driver_aliases file for the qfe line required by the
2. PCI Networking Device on page 9 Known Problems With the Installation and User s Guide on page 9 Note If your system is running the Solaris 2 6 Hardware 5 98 operating environment or subsequent compatible versions do not use the driver on the Sun Quad FastEthernet 2 1 CD ROM The software on the Solaris CD ROM is more current and replaces previous versions of the driver For information on this version of the driver refer to the Platform Notes The Sun Quad FastEthernet Device Driver which is shipped with the Solaris documentation For information on patches see Sun Quad FastEthernet 2 2 Software Patches on page 4 Caution To avoid a system panic you must follow the hardware and software installation procedures in the Sun Quad FastEthernet PCI Adapter Installation and User s Guide 805 1797 10 and these release notes Required Software Patches To achieve the best performance from the Sun Quad FastEthernet driver software you must install a patch Before installing a patch or the software from the Sun Quad FastEthernet 2 1 CD ROM check to see if there is already another version of the Sun Quad FastEthernet driver on your system Checking for Installed Sun Quad FastEthernet Software Previous versions of the Sun Quad FastEthernet driver have been included with other Sun products Before installing the Sun Quad FastEthernet 2 1 software check your system for other versions of the Sun Quad FastEt
3. 97 106531 x Solaris 2 6 106532 x Solaris 2 6 Hardware 5 98 The patches listed above are current as of the printing of this document Future revisions of these patches will also correct problems with this software These patches may also be included in future jumbo kernel patches 4 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 Note For information on how to get the latest patches and patch revisions visit the SunSolve website at http sunsolve sun com Otherwise contact your local SunService representative for assistance or your local SunService authorized service provider for more information Conflicts With FastEthernet Switches 100BASE T There are two FastEthernet 100BASE T switches that may present difficulties when working with the Sun Quad FastEthernet PCI adapter a Bay Networks model 28115 ADV m SynOptics model 28115 If you use the adapter with these switches you will encounter difficulties refer to bug ID 4071199 for more information Installing the Quad FastEthernet 2 1 driver patch as described in Installing the Required Quad FastEthernet Software Patches on page 4 will fix these difficulties Increasing Performance on Enterprise Servers with Four Quad FastEthernet Adapters If you have four Sun Quad FastEthernet adapters in an Enterprise server you may experience slow performance and response times during periods of high network traffic This poor performance is usua
4. If your system is running the Solaris 2 5 1 operating environment versions Hardware 4 97 Hardware 8 97 or Hardware 11 97 you must add the pci pci pcil011 25 line to your etc driver_aliases file before installing the adapter Refer to page 5 of the Sun Quad FastEthernet PCI Installation and User s Guide for instructions on editing the driver_aliases file 8 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 Avoiding a System Panic While Detaching a PCI Networking Device Unloading or detaching a PCI networking device may cause a Solaris 2 5 1 system to crash because of a problem with the PCI 4 nexus driver Refer to bug ID 4058070 for more information Install the 105004 10 patch to fix this bug This patch is current as of the printing of this document Future revisions of this patch will also correct the problems described in the 4058070 bug report This patch may also be included in future jumbo kernel patches Note For information on how to get the latest patches and patch revisions visit the SunSolve website at http sunsolve sun com Otherwise contact your local SunService representative for assistance or your local SunService authorized service provider for more information Known Problems With the Installation and User s Guide Configuring the Host Files Note Configuring the Host Files on page 11 of the Sun Quad FastEthernet PCI Adapter Installation and User s Guide contains in
5. SUNWqfed SUNWqfed Sun Quad FastEthernet Adapter Driver sparc 3 0 Use the table below to translate the pkginfo output TABLE 1 pkginfo Output Description pkginfo x Output Description and Action No output Your system does not have the Sun Quad FastEthernet software installed Follow the installation instructions in the Sun Quad FastEthernet 2 1 CD Insert and then install the patch listed in Installing the Required Quad FastEthernet Software Patches on page 4 1 0 Your system has the Sun Quad FastEthernet 2 0 software installed You must remove this 2 0 version of the software and install the 2 1 software as described in the Sun Quad FastEthernet 2 1 CD Insert After installing the software install the patch listed in Installing the Required Quad FastEthernet Software Patches on page 4 1 1 Your system already has the Sun Quad FastEthernet 2 1 software installed Install the patch listed in Installing the Required Quad FastEthernet Software Patches on page 4 3 0 Your system has the Sun Quad FastEthernet software installed with the Sun Trunking 1 0 software Do not install the software from the CD ROM and do not install any patch listed in these release notes Note If you remove this version of the software you will not be able to use the Trunking 1 0 software Sil Your system has the Sun Quad FastEthernet 2 2 software installed This version was shipped with the Sun Trunking 1 0 1 software and the
6. Solaris 2 6 Hardware 5 98 software Do not install the software from the CD ROM but do install the patch listed in Installing the Required Quad FastEthernet Software Patches on page 4 Sun Quad FastEthernet PCI Adapter Release Notes 3 Installing the Required Quad FastEthernet Software Patches Install the patch listed below that is appropriate for the version of the Sun Quad FastEthernet software and the Solaris environment installed on your system These patches correct panics during dynamic reconfiguration difficulties with certain FastEthernet switches and problems with general network performance refer to these patches README files for more information Sun Quad FastEthernet 2 1 Software Patches This version of the Sun Quad FastEthernet software is shipped with the Sun Quad FastEthernet 2 1 CD ROM Install the software from this CD before installing the patch TABLE 2 Sun Quad FastEthernet 2 1 Patches Operating Environment Patch Identification Number Solaris 2 5 1 Hardware 4 97 8 97 and 11 97 105532 x Solaris 2 6 prior to Solaris 2 6 Hardware 5 98 105541 x Sun Quad FastEthernet 2 2 Software Patches This version of the Sun Quad FastEthernet software is shipped with the Sun Trunking 1 0 1 software and the Solaris 2 6 Hardware 5 98 environment TABLE 3 Sun Quad FastEthernet 2 2 Patches Operating Environment Patch Identification Number Solaris 2 5 1 Hardware 4 97 8 97 and 11
7. Sun Quad FastEthernet PCI Adapter Release Notes Qe Sun microsystems THE NETWORK IS THE COMPUTER Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 4900 USA 650 960 1300 Fax 650 969 9131 Part No 805 2901 12 July 1998 Revision A Send comments about this document to docfeedback sun com Copyright 1998 Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 USA All rights reserved This product or document is protected by copyright and distributed under licenses restricting its use copying distribution and decompilation No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors if any Third party software including font technology is copyrighted and licensed from Sun suppliers Parts of the product may be derived from Berkeley BSD systems licensed from the University of California UNIX is a registered trademark in the U S and other countries exclusively licensed through X Open Company Ltd Sun Sun Microsystems the Sun logo AnswerBook Java the Java Coffee Cup Sun Quad FastEthernet Sun Trunking SunSolve SunService and Solaris are trademarks registered trademarks or service marks of Sun Microsystems Inc in the U S and other countries All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International Inc in the U S and other countries Products bea
8. accurate qfe interface numbers and hostname qfe lt num gt file names The corrected section is shown below After installing the Sun Quad FastEthernet driver software you must create a hostname qfe lt num gt file for the adapter s Ethernet interfaces You must also create both an IP address and a host name for its Ethernet interfaces in the etc hosts file Sun Quad FastEthernet PCI Adapter Release Notes 9 1 At the command line use the grep command to search the etc path_to_inst file for qfe devices grep qfe etc path_to_inst pci 1 2000 pci 2 SUNW qfe 0 1 0 qfe pci 1 2000 pci 2 SUNW qfe l 1 1 qfe pci 1 2000 pci 2 SUNW gfe 2 1 2 qfe pci 1 2000 pci 2 SUNW gfe 3 1 3 qfe In the example above the four SUNW qfe x 1 instances are from a Sun Quad FastEthernet PCI Adapter installed in slot 2 For clarity the instance numbers are bold 2 Create an etc hostname qfe lt num gt file where lt num gt corresponds to the instance number of each interface you plan to use If you wanted to use all of the adapter interfaces in Step 1 you would need to create four files TABLE 4 etc hostname qfe lt num gt Files Instance Filename Number Adapter Ethernet Channel etc hostname qfe0 0 0 etc hostname qfel 1 1 etc hostname qfe2 2 2 etc hostname qfe3 3 3 Guidelines for hostname qfe lt num gt Files Do not create etc hostname qfe lt num gt files for Sun Quad FastEthernet PCI Ad
9. adapter grep qfe SUNW qfe driver_aliases grep If this line already exists in the driver_aliases file you can skip to Step 8 Otherwise you will need to add this line to the file before installing the adapter Sun Quad FastEthernet PCI Adapter Release Notes July 1998 7 Using a text editor add the following line to the end of the driver_aliases file qfe SUNW qfe 8 Create the following symbolic link In s lt archive_of_arch gt devices pseudo clone 0 qfe lt archive_of_arch gt dev qfe 9 Insert and mount the Sun Quad FastEthernet 2 1 CD ROM m If your system is running Volume Manager it should automatically mount the CD ROM to the cdrom sun_quadfast_2_1 directory m If your system is not running Volume Manager mount the CD ROM as follows mkdir p cdrom sun_quadfast_2_1 mount F hsfs r dev dsk c0t6d0s2 cdrom sun_quadfast_2_1 10 Copy the qfe driver from the CD ROM to the client s root partition In the steps below replace DIR with the directory where the Solaris software is located on the client system a For Solaris 2 5 1 operating systems type cp cdrom sun_quadfast_2_1 So01_2 5 1 SUNWqfed reloc kernel drv qfe DIR export exec kvm lt archive_of_arch gt kernel drv b For the Solaris 2 6 operating system type cp cdrom sun_quadfast_2 1 Sol_ 2 6 SUNWqfed reloc kernel drv qfe DIR export exec kvm lt archive_of_arch gt kernel drv 11 Unmount and
10. apter channels you plan to leave unused m The etc hostname gqfe lt num gt file must contain the host name for the appropriate network interface m The host name should have an IP address and should be entered in the etc hosts file m The host name should be different from any other host name of any other interface for example etc hostname hme0 and etc hostname qfe2 cannot share the same host name 10 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 Using the instance examples in Step 1 the following example shows the four etc hostname qfe lt num gt files required for a system called zardoz that has a Sun Quad FastEthernet PCI Adapter zardoz 11 zardoz 12 zardoz 13 and zardoz 14 cat etc hostname zardoz cat etc hostname zardoz 11 cat etc hostname zardoz 12 cat etc hostname zardoz 13 cat etc hostname zardoz 14 hme0 qfe0 qfe1 qfe2 qfe3 3 Create an appropriate entry in the etc hosts file for each active qfe channel Using the example in Step 1 you will have 127 12 9 129 129 129 129 0 0 144 144 144 144 144 1 10 LAS 12 13 14 57 83 41 67 30 cat etc hosts Internet host table localhost zardoz zardoz 11 zardoz 12 zardoz 13 zardoz 14 loghost 4 Reboot your system Booting a Diskless Client System Note This section should be appended to Chapter 3 of the Sun Quad FastEthernet PCI Adapter
11. contain a FastEthernet qfe entry use a text editor to add an entry for the Sun Quad FastEthernet PCI Adapter device qfe If the major device number for the last file entry is n then use n 1 for the gfe channel major device number As shown in the example below if the last entry for the major device number is 108 use 109 for the qfe device audiocs 108 qfe 109 4 Check the driver_aliases file for the pci_pci line required by the adapter grep pci_pci pcil011 25 driver_aliases If this line already exists in the driver_aliases file you can skip to Step 6 Otherwise you will need to add this line to the file before installing the adapter 5 Using a text editor add the following line to the end of the driver_aliases file pci pci pci1011 25 6 Check the driver_aliases file for the qfe line required by the adapter grep qfe SUNW qfe driver _aliases grep If this line already exists in the driver_aliases file you can skip to Step 8 Otherwise you will need to add this line to the file before installing the adapter 7 Using a text editor add the following line to the end of the driver_aliases file qfe SUNW qfe 8 Create the following symbolic link In s lt archive_of_arch gt devices pseudo clone 0 qfe lt archive_of_arch gt dev qfe Sun Quad FastEthernet PCI Adapter Release Notes 15 9 Insert and mount the Sun Quad FastEthernet 2 1 CD ROM m If your syste
12. eject the CD ROM as follows cd umount cdrom eject cdrom Sun Quad FastEthernet PCI Adapter Release Notes 13 12 Create a hostname qfe lt num gt file for the client in the etc directory of the client s root partition See Configuring the Host Files on page 9 for more information 13 Reboot your system Updating the Solaris Archive to Use the qfe Interface Note This section should be appended to Chapter 3 of the Sun Quad FastEthernet PCI Adapter Installation and User s Guide This section is only applicable if you are installing the Solaris operating environment on a net install client system over the Quad FastEthernet qfe interface Note The Solaris CD ROM cannot be used to perform a net install since it is a read only medium Therefore the Solaris CD image archive is required so you can update certain software files 1 Determine the directory where the CD image is located on the boot server For example if the Solaris software is located within a directory named DIR change to the etc directory of the client s root partition by typing cd DIR export exec kvm lt archive_of_arch gt ete 2 Search the name_to_major file for Quad FastEthernet qfe entries grep qfe name to major qfe 119 If this file already has a Quad FastEthernet qfe entry skip to Step 4 14 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 3 If the name_to_major file does not
13. hernet driver Bundled Sun Quad FastEthernet Drivers Beginning with the Solaris 2 6 Hardware 5 98 release the Sun Quad FastEthernet driver is bundled with the Solaris operating environment This version of the Sun Quad FastEthernet driver is more current than the one shipped on the Sun Quad FastEthernet 2 1 CD ROM Note If your system is running the Solaris 2 6 Hardware 5 98 environment or future compatible Solaris releases do not install the software from the Sun Quad FastEthernet 2 1 CD ROM If your system is running the Solaris 2 6 operating environment and you are unsure if it is running the Hardware 5 98 release check the contents of the etc release file cat etc release Solaris 2 6 5 98 build_id_name SPARC Copyright 1998 Sun Microsystems Inc All Rights Reserved Assembled on 24 April 1998 If this file exists and it contains Solaris 2 6 5 98 your system is running the Solaris 2 6 Hardware 5 98 release See Installing the Required Quad FastEthernet Software Patches on page 4 for patch information 2 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 Checking for Quad FastEthernet Software Shipped With Other Products Other versions of the Sun Quad FastEthernet software have been shipped with an earlier release of the adapter and with the Sun Trunking software To check your system for installed Sun Quad FastEthernet software type the following at a command prompt pkginfo x
14. icence non exclusive de Xerox sur l interface d utilisation graphique Xerox cette licence couvrant galement les licenci s de Sun qui mettent en place l interface d utilisation graphique OPEN LOOK et qui en outre se conforment aux licences crites de Sun CETTE PUBLICATION EST FOURNIE EN L ETAT ET AUCUNE GARANTIE EXPRESSE OU IMPLICITE N EST ACCORDEE Y COMPRIS DES GARANTIES CONCERNANT LA VALEUR MARCHANDE L APTITUDE DE LA PUBLICATION A REPONDRE A UNE UTILISATION PARTICULIERE OU LE FAIT QU ELLE NE SOIT PAS CONTREFAISANTE DE PRODUIT DE TIERS CE DENI DE GARANTIE NE S APPLIQUERAIT PAS DANS LA MESURE OU IL SERAIT TENU JURIDIQUEMENT NUL ET NON AVENU Rb ax ga Adobe PostScript Sun Quad FastEthernet PCI Adapter Release Notes This document contains the following important information about the Sun Quad FastEthernet PCI Adapter and the Sun Quad FastEthernet 2 1 driver software m Required Software Patches on page 2 a Conflicts With FastEthernet Switches LOOBASE T on page 5 m Increasing Performance on Enterprise Servers with Four Quad FastEthernet Adapters on page 5 Increasing Synchronized Queues to Improve Network Performance on page 6 Disabling IP Forwarding Routing Protocols on Application Servers on page 6 Increasing TCP IP Performance on Solaris 2 6 Systems on page 7 Editing the driver_aliases File on Solaris 2 5 1 Systems on page 8 Avoiding a System Panic While Detaching a
15. lly caused by applications that use data buffer and socket buffer sizes greater than 8 Kbytes You can achieve better network performance by adjusting your application s data buffer size and socket buffer size to be less than or equal to 8 Kbytes Refer to the application s documentation for instructions on how to set these buffer sizes Sun Quad FastEthernet PCI Adapter Release Notes 5 Increasing Synchronized Queues to Improve Network Performance To increase the size of STREAMS synchronized queues thereby increasing network performance add the sq_max_size variable to the etc systen file set sq_max_size n Set the sq_max_size variable to n where n is the maximum number of messages that are allowed for each IP queue A safe value to set this variable is 25 for each 64 Mbytes of RAM in the system For example if your system has 64 Mbytes of RAM you would set the variable to 25 50 if the system has 128 Mbytes of RAM 100 if your system has 256 Mbytes of RAM and so on You can be more aggressive if you choose but you may overrun STREAMS resources Refer to the Solaris documentation for more information Disabling IP Forwarding Routing Protocols on Application Servers By default the Solaris operating environment will configure systems using more than one network interface to be an IP forwarding router Application servers are typically multihomed which mean that they contain more than one network interface but do not r
16. m is running Volume Manager it should automatically mount the CD ROM to the cdrom sun_quadfast_2_1 directory If your system is not running Volume Manager mount the CD ROM as follows mkdir p cdrom sun_quadfast_2_1 mount F hsfs r dev dsk c0t6d0s2 cdrom sun_quadfast_2_1 10 Copy the gfe driver from the CD ROM to the client s root partition In the steps below replace DIR with the directory where the Solaris CD image is located on the boot server system a For Solaris 2 5 1 operating systems type cp cdrom sun_quadfast_2_1 So01_2 5 1 SUNWqfed reloc kernel drv qfe DIR export exec kvm lt archive_of_arch gt kernel drv b For the Solaris 2 6 operating system type cp cdrom sun_quadfast_2_1 So01_2 6 SUNWqfed reloc kernel drv qfe DIR export exec kvm lt archive_of_arch gt kernel drv 11 Unmount and eject the CD ROM as follows cd umount cdrom eject cdrom 12 On the client system perform the tasks listed in the section Booting a Diskless Client System on page 11 13 Complete the Solaris client installation Refer to your Solaris documentation for detailed instructions 14 Install the software drivers from the Sun Quad FastEthernet 2 1 CD ROM See the cd insert for more information 15 Reboot the system 16 Sun Quad FastEthernet PCI Adapter Release Notes July 1998
17. nt to remove the etc defaultrouter file or alternatively force the ndd parameter ip_forwarding to equal 0 For more information refer to the TCP IP and Data Communications Administration Guide shipped with the Solaris documentation Increasing TCP IP Performance on Solaris 2 6 Systems If you are running your Solaris 2 6 system with a large TCP window and you experience slowdowns during periods of high network traffic you should decrease the TCP default maximum retransmission timeout interval variable tcp_rexmit_interval_max to 60000 As superuser type ndd set dev tcp tcp_rexmit_interval_max 60000 Sun Quad FastEthernet PCI Adapter Release Notes 7 The changes are immediate and they affect all the TCP connections in the system However the changes will be lost when you reboot your machine Note You may not need to perform this workaround if you use a smaller TCP window for example an 8 Kbyte or a 16 Kbyte window To avoid losing the TCP IP setting you can put the parameter change in a run control script in the etc rc2 d directory similar to the following example sbin sh Local kernel modifications case S1 in start echo Setting local kernel parameters c ndd set dev tcp tcp_rexmit_interval_max 60000 echo 11 stop echo No kernel parameters changed echo Usage 0 start stop Editing the driver_aliases File on Solaris 2 5 1 Systems
18. r quelque moyen que ce soit sans l autorisation pr alable et crite de Sun et de ses bailleurs de licence s il y en a Le logiciel d tenu par des tiers et qui comprend la technologie relative aux polices de caract res est prot g par un copyright et licenci par des fournisseurs de Sun Des parties de ce produit pourront tre d riv es des syst mes Berkeley BSD licenci s par l Universit de Californie UNIX est une marque d pos e aux Etats Unis et dans d autres pays et licenci e exclusivement par X Open Company Ltd Sun Sun Microsystems le logo Sun AnswerBook Java le logo Jave Coffee Cup Sun Quad FastEthernet Sun Trunking SunSolve SunService et Solaris sont des marques de fabrique ou des marques d pos es ou marques de service de Sun Microsystems Inc aux Etats Unis et dans d autres pays Toutes les marques SPARC sont utilis es sous licence et sont des marques de fabrique ou des marques d pos es de SPARC International Inc aux Etats Unis et dans d autres pays Les produits portant les marques SPARC sont bas s sur une architecture d velopp e par Sun Microsystems Inc L interface d utilisation graphique OPEN LOOK et Sun a t d velopp e par Sun Microsystems Inc pour ses utilisateurs et licenci s Sun reconna t les efforts de pionniers de Xerox pour la recherche et le d veloppement du concept des interfaces d utilisation visuelle ou graphique pour l industrie de l informatique Sun d tient une l
19. ring SPARC trademarks are based upon an architecture developed by Sun Microsystems Inc The OPEN LOOK and Sun Graphical User Interface was developed by Sun Microsystems Inc for its users and licensees Sun acknowledges the pioneering efforts of Xerox in researching and developing the concept of visual or graphical user interfaces for the computer industry Sun holds a non exclusive license from Xerox to the Xerox Graphical User Interface which license also covers Sun s licensees who implement OPEN LOOK GUIs and otherwise comply with Sun s written license agreements RESTRICTED RIGHTS Use duplication or disclosure by the U S Government is subject to restrictions of FAR 52 227 14 g 2 6 87 and FAR 52 227 19 6 87 or DFAR 252 227 7015 b 6 95 and DFAR 227 7202 3 a DOCUMENTATION IS PROVIDED AS IS AND ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT ARE DISCLAIMED EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID Copyright 1998 Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 Etats Unis Tous droits r serv s Ce produit ou document est prot g par un copyright et distribu avec des licences qui en restreignent l utilisation la copie la distribution et la d compilation Aucune partie de ce produit ou document ne peut tre reproduite sous aucune forme pa
20. un IP routing protocols or forward IP packets If you do not disable the IP forwarding and routing protocols on multihomed application servers the servers may experience poor performance NFS servers and database servers are a couple of examples of multihomed application servers The purpose of these application servers is to provide a presence on multiple networks These networks usually contain dedicated routing devices routers layer 3 switches or dedicated Sun systems in the network infrastructure that provide the IP forwarding routing services 6 Sun Quad FastEthernet PCI Adapter Release Notes July 1998 To maximize the performance of your multihomed desktop or application server we recommend disabling the IP forwarding and routing protocols One method of disabling IP forwarding is to create an etc notrouter file and then reboot your system 1 As superuser type usr bin touch etc notrouter 2 Shut down and reboot the system 3 After rebooting your system verify that IP forwarding has been disabled in the kernel usr sbin ndd dev ip ip_forwarding If you receive a 0 result your system will never forward IP packets If you receive non zero result your system may still forward IP packets If you received non zero result your system may contain an etc defaultrouter file The existence of this file may prevent the etc init d inetinit boot script from detecting the etc notrouter file You may wa

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