RE: DE500-XA & full-duplex #2

>-----Original Message----- >From: Christoph Gartmann [mailto:gartmann@non.immunbio.mpg.de.sens] >Sent: Wednesday, December 17, 2003 1:56 AM >To: Info-VAX@Mvb.Saic.Com >Subject: Re: DE500-XA & full-duplex > > >In article <MCELKPMOKPMNDNKJNIONEEKNCHAA.win@fom.fgan.de>, "Rudolf >Wingert" <win@fom.fgan.de> writes: >> >>Christoph Gartmann wrotes: >> >>>>> >>Just tried to use 100 half and get again lots of errors. Note, >with a different >>switch we had no such problems. It is something between this card >the the 4400. >><<< >> >>AFAIK there are o lot of problems with the 3Com switches (and >also interfaces). >>Try to missconfigure the connection. First time set the switch to >>AUTONEGOTIATION and the interface to FASFD. If this does not work, set the >>switch to FASFD and the interface to AUTONEGOTIATION. May be this >will help. I >>did hear this from a network service seller. > >I can't set the DE500-XA to Autonegotiation, the console doesn't >allow this for >this card :-( Maybe you have the wrong name for the value of the SRM variable? for example, on a PWS500au with Tru64 with same SRM as used for VMS bash-2.05b# consvar -v -g ewa0_mode Firmware Rev: 6.9-7 system fam:30 cpu:5 smm:1791 ewa0_mode = Auto-Negotiate > >Regards, > Christoph Gartmann > >-- > Max-Planck-Institut fuer Phone : +49-761-5108-464 Fax: -452 > Immunbiologie > Postfach 1169 Internet: gartmann@immunbio dot mpg dot de > D-79011 Freiburg, Germany > http://www.immunbio.mpg.de/home/menue.html > >--- >Incoming mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.548 / Virus Database: 341 - Release Date: 12/5/2003 > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.548 / Virus Database: 341 - Release Date: 12/5/2003

In article <CIEJLCMNHNNDLLOOGNJIMEODIKAA.tom@kednos.com>, "Tom Linden" <tom@kednos.com> writes: > > >>-----Original Message----- >>From: Christoph Gartmann [mailto:gartmann@non.immunbio.mpg.de.sens] >>Sent: Wednesday, December 17, 2003 1:56 AM >>To: Info-VAX@Mvb.Saic.Com >>Subject: Re: DE500-XA & full-duplex >> >> >>In article <MCELKPMOKPMNDNKJNIONEEKNCHAA.win@fom.fgan.de>, "Rudolf >>Wingert" <win@fom.fgan.de> writes: >>> >>>Christoph Gartmann wrotes: >>> >>>>>> >>>Just tried to use 100 half and get again lots of errors. Note, >>with a different >>>switch we had no such problems. It is something between this card >>the the 4400. >>><<< >>> >>>AFAIK there are o lot of problems with the 3Com switches (and >>also interfaces). >>>Try to missconfigure the connection. First time set the switch to >>>AUTONEGOTIATION and the interface to FASFD. If this does not work, set the >>>switch to FASFD and the interface to AUTONEGOTIATION. May be this >>will help. I >>>did hear this from a network service seller. >> >>I can't set the DE500-XA to Autonegotiation, the console doesn't >>allow this for >>this card :-( > >Maybe you have the wrong name for the value of the SRM variable? >for example, on a PWS500au with Tru64 with same SRM as used for VMS >bash-2.05b# consvar -v -g ewa0_mode >Firmware Rev: 6.9-7 >system fam:30 cpu:5 smm:1791 >ewa0_mode = Auto-Negotiate Meanwhile I looked into the VMS-FAQ and found http://h71000.www7.hp.com/wizard/faq/vmsfaq_018.html Topic 14.25 states clearly: # DE500-XA auto-detection, no auto-negotiation, So I wonder how I would enable auto-detection? Regards, Christoph Gartmann -- Max-Planck-Institut fuer Phone : +49-761-5108-464 Fax: -452 Immunbiologie Postfach 1169 Internet: gartmann@immunbio dot mpg dot de D-79011 Freiburg, Germany http://www.immunbio.mpg.de/home/menue.html

Christoph Gartmann wrote: > In article <CIEJLCMNHNNDLLOOGNJIMEODIKAA.tom@kednos.com>, "Tom Linden" <tom@kednos.com> writes: > >> >>>-----Original Message----- >>>From: Christoph Gartmann [mailto:gartmann@non.immunbio.mpg.de.sens] >>>Sent: Wednesday, December 17, 2003 1:56 AM >>>To: Info-VAX@Mvb.Saic.Com >>>Subject: Re: DE500-XA & full-duplex >>> >>> >>>In article <MCELKPMOKPMNDNKJNIONEEKNCHAA.win@fom.fgan.de>, "Rudolf >>>Wingert" <win@fom.fgan.de> writes: >>> >>>>Christoph Gartmann wrotes: >>>> >>>> >>>>Just tried to use 100 half and get again lots of errors. Note, >>> >>>with a different >>> >>>>switch we had no such problems. It is something between this card >>> >>>the the 4400. >>> >>>><<< >>>> >>>>AFAIK there are o lot of problems with the 3Com switches (and >>> >>>also interfaces). >>> >>>>Try to missconfigure the connection. First time set the switch to >>>>AUTONEGOTIATION and the interface to FASFD. If this does not work, set the >>>>switch to FASFD and the interface to AUTONEGOTIATION. May be this >>> >>>will help. I >>> >>>>did hear this from a network service seller. >>> >>>I can't set the DE500-XA to Autonegotiation, the console doesn't >>>allow this for >>>this card :-( >> >>Maybe you have the wrong name for the value of the SRM variable? >>for example, on a PWS500au with Tru64 with same SRM as used for VMS >>bash-2.05b# consvar -v -g ewa0_mode >>Firmware Rev: 6.9-7 >>system fam:30 cpu:5 smm:1791 >>ewa0_mode = Auto-Negotiate > > > Meanwhile I looked into the VMS-FAQ and found > http://h71000.www7.hp.com/wizard/faq/vmsfaq_018.html > Topic 14.25 states clearly: > # DE500-XA > auto-detection, no auto-negotiation, > So I wonder how I would enable auto-detection? > > Regards, > Christoph Gartmann > I don't know if that is possible, or that they mean the switch should auto detect the speed. You can also have a look at the settings for the running device, if it is truly running at full duplex. mc lancp lancp> sho dev ewa0 /char With the same control program you can change the characteristics on-line.

Hello, now I tried a different DE500-XA in the workstation - same result: CRC errors when connected to the 3COM 4400 switch, no errors when connected to a cheap Soho switch. But the duplex LED on the Soho switch is flickering instead of being constantly on. Nevertheless LANCP on the VMS side states "full duplex". Next, I replaced the DE500-XA with a DE500-BA: no problem with the 4400. I have both ends hard-coded to 100 FD, though. Unfortunately I cannot try the DE500-XA under Tru64-Unix, something in my box exploded when I tried to power it up :-( Regards, Christoph Gartmann -- Max-Planck-Institut fuer Phone : +49-761-5108-464 Fax: -452 Immunbiologie Postfach 1169 Internet: gartmann@immunbio dot mpg dot de D-79011 Freiburg, Germany http://www.immunbio.mpg.de/home/menue.html

Christoph Gartmann wrote: > Hello, > > now I tried a different DE500-XA in the workstation - same result: CRC errors > when connected to the 3COM 4400 switch, no errors when connected to a cheap > Soho switch. But the duplex LED on the Soho switch is flickering instead of > being constantly on. That means the port of your Soho switch is in half-duplex mode, and the Duplex LED is now showing collisions. This LED had two functions, when it lights up constantly it means the port is in full-duplex mode. When it is (mainly) off, the port is in half-duplex mode, and every time it flickers there are collisions. You can not have collisions in full-duplex mode, only in half-duplex mode. > Nevertheless LANCP on the VMS side states "full duplex". Yes, because it is configurered that way. Now you are sure it is in full-duplex mode. Of course this combination of full-duplex DE500 and half-duplex Soho switch port is wrong, You should set the DE500 to half-duplex. You can't get the Soho switch port into full-duplex mode because it can not auto-negotiate with the DE500. In this setting it will always fall back to half-duplex mode. > > Next, I replaced the DE500-XA with a DE500-BA: no problem with the 4400. I have > both ends hard-coded to 100 FD, though. Good, that is one way how it certainly should work. > > Unfortunately I cannot try the DE500-XA under Tru64-Unix, something in my box > exploded when I tried to power it up :-( I'm sorry to hear that, I can imagine your frustration. > > Regards, > Christoph Gartmann >