| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1048.1 | this kind of bridging may cause you problems | ROYALT::RASPUZZI | Michael Raspuzzi - LAT Engineering et al | Wed Aug 04 1993 08:42 | 19 |
| �hello, Can works this type of network ?
No, if this is true:
�The protocol used is only DECnet PHASE IV
The reason why I say no is that you have multiple adapters on one
system and they all use the AA-00-04-00-xx-xx address. Since all the
adapters are on the same logical LAN, you will have multiple stations
with the same LAN address (this is a network violation). On one of
your ethernets, the 6310 will have 2 connections (the FDDI controller
and the ethernet controller).
DECnet phase V should work fine in this configuration and LAVCs allow
for it too. LAT and DECnet phase IV do not work very well on all the
controllers with that configuration.
Mike
|
| 1048.2 | | KONING::KONING | Paul Koning, A-13683 | Wed Aug 04 1993 11:32 | 9 |
| This configuration will work ONLY if you turn DECnet on for only ONE of the
LAN ports on each node.
A good way to look at configuration questions like this: replace all FDDI
connections by Ethernet connections. Now ask yourself the question whether
the result is legal. If yes, then the corresponding FDDI configuration is
legal also.
paul
|
| 1048.3 | | JEDI::CAUDILL | Kelly - NaC Tech Support - 264-3320 | Wed Aug 04 1993 17:25 | 7 |
| > This configuration will work ONLY if you turn DECnet on for only ONE of the
> LAN ports on each node.
Not only must DECnet not be turned on on more than one of these ports, it
need to not even be defined. In other words, NCP> SET LINE xyz STATE OFF
is *NOT* good enough. You need to NCP> PURGE LINE xyz ALL and then reboot.
Where "xyz" is the "second" line, of course.
|
| 1048.4 | Why is FDDI different? | GEOFF::SCHULTZ | LKG 1-2/W6 - Pole B11 - DTN 226-6145 | Fri Aug 06 1993 11:19 | 4 |
| This is news to me. Then again I've never had a system with dual
FDDI controllers. With Ethernet I could have both of the DEFINEd,
but only 1 on. Why is FDDI different?
-- Geoff
|
| 1048.5 | | JEDI::CAUDILL | Kelly - NaC Tech Support - 264-3320 | Fri Aug 06 1993 15:12 | 12 |
| I don't think FDDI is different.
I think you probably had a problem and just were not noticing it.
Either that, or your two ethernet adapters where connected to
completely seperate ethernets (no bridges).
Unless something has changed or I have been halucinating, if you have a
LAN device DEFINEd when DECnet starts up, it will be SET. Even if it
is STATE OFF, being SET will cause DECnet to assign a channel to it
and, in the process, initialize it to the DECnet modified address.
Once that has happened, the device will send frames from the DECnet
modified address and the bridges will learn the location.
|
| 1048.6 | | UPSAR::THOMAS | The Code Warrior | Sat Aug 07 1993 16:58 | 5 |
| In the Ethernet case, then were probably both on the same segment so
they way the identical traffic. With FDDI, there will bridges in the
way they will think you are one side or the other. Imagine what
happens when the "other" adapter receives the wrong packets. Usually,
they just get dropped.
|
| 1048.7 | DECnet on 2 interfaces - only 1 connected to LAN | ROMEOS::RICHARDS_LA | | Mon Dec 13 1993 21:01 | 15 |
| Hi There,
All of the above info makes perfect sense to me, but can anyone tell me why
enabling DECnet on both the FDDI and Ethernet interface and then only
attaching the Ethernet interface to the network would cause DECnet to
be extemely slow. We recently began installing an Alpha 3000/500. We
connected only the Ethernet interface and noticed that NCP commands
were extremely slow. We then noticed that DECnet line and circuits
were up on both the FDDI and Ethernet. We immediatley turned off
DECnet on the unconnected FDDI interface and the slowness vanished.
Would the FDDI DAT test have anything to do with this strange behavior?
Thanks,
Laurie
|