| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 212.1 | | KONING::KONING | Lietuva laisva! | Tue Feb 26 1991 12:38 | 15 |
| Yes and no.
DECnet will not change "the" address. The DEMFA (indeed all DEC FDDI
adapters) supports "alias" addresses. So the AA-00... address will be
an alias address, and the "main" address (MLA, My Long Address, as FDDI
calls it) remains. Thus the familiar problem when you start LAT first
and DECnet second will not occur.
On the other hand, the alias address does act like a normal individual
address, and must be unique on the extended LAN. If you have an Ethernet
adapter as well, and a bridge in between, then only one can be turned
on for DECnet at any one time. This is the same rule as applies with
just Ethernet, and the answer is the same: fixed in Phase V.
paul
|
| 212.2 | All FDDI adapters have this problem | TALLIS::REGE | | Tue Feb 26 1991 16:34 | 11 |
|
Thanks for your explanation, Paul.
I thought DEMFA had a problem looking at the title in .0.
and couldn't figure out what was different about DEMFA.
As you say the problem is true for all FDDI adapters.
/satish
|
| 212.3 | FDDI, Ethernet bridging & DECnet Phase V | HGOVC::GUPTA | | Thu Oct 21 1993 00:38 | 37 |
| Ref: .1
Hi Paul,
If I have understood your response (.1) correctly then the config shown in
Fig 1 below should be possible if DECnet Phase V is running on VAX 6610.
Right ?
,-----------, ,----------------,
| DECbridge | |DECconcentrator |
| 610 |===========| 500 |
| | Dual ring | |
`-----------' FDDI | |
| . `----------------'
| . |
------------' . | FDDI
. ,--------------,
. | VAX 6610 |
(POSSIBLE) . `--------------'
???? . |
. |
---------------------------------------- Ethernet
Fig 1.
I have a customer who is having a lot of VAXes. Now he wants to upgrade to FDDI
for bandwidth reasons. Is it possible to connect VAXes to FDDI as well as keep
them on ethernet as well ? The intention is to enhance network redundancy.
Normally VAX 6610 will be accessible on FDDI port. In case that VAX is not
reachable on FDDI, ethernet can be used. Will it be possible if DECnet Phase V
is running on VAX ?
The above network is just an illustration. We plan to use DEChub 900 components
when available.
Regards,
Surender
|
| 212.4 | DECnet phase V should be OK - LAT is not | ROYALT::RASPUZZI | Michael Raspuzzi - LAT Engineering et al | Thu Oct 21 1993 07:51 | 5 |
| DECnet phase V should work in that configuration. LAT still only works
over one adapter - creating a second LAT link on the same logical LAN
will cause you problems.
Mike
|
| 212.5 | | KONING::KONING | Paul Koning, B-16504 | Thu Oct 21 1993 11:21 | 12 |
| Yes, that configuration will work, but you must configure it correctly.
Phase V will use the same address as Phase IV did (for compatibility) if
you tell it to. If you do that on both the interfaces, you'll have the old
Phase IV problem again. So for this configuration, you must either have
Phase IV addressing turned off completely, or turn it on for only ONE
of the interfaces.
If your network consists of Phase V nodes only, the simplest is to turn
Phase IV addressing off. (This eliminates some management steps that are
unnecessary in that case.)
paul
|