| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 465.1 | Yes, multicast packets work fine. | ORACLE::WATERS | I need an egg-laying woolmilkpig. | Wed Jan 29 1992 22:31 | 2 |
| All transparent Ethernet-FDDI bridges will pass multicast messages
by default. All of DEC's FDDI bridges, for sure!
|
| 465.2 | Multicast tru FDDI | OGWANI::OGINO | | Fri Mar 13 1992 01:14 | 9 |
| I understand that FDDI passes multicast data. But DECtrade Nway protocol has
some difficulties to go thru FDDI. Anyway I have another question. If a
VAX(system A) is connected to an Ethernet segment which is connected to FDDI
backbone LAN via DECbridge and another VAX(system B) is directly connected to
FDDI LAN via DECconcentrator and FDDI controller, is it possible to use
Ethernet multicast from system A to system B? How about from system B to
system A?
Yoji
|
| 465.3 | frame translation | TKTVFS::IDO | Naoki Ido, CSC/TOKYO, EWB, DTN 680-2456 | Fri Mar 13 1992 05:26 | 17 |
| Multicast addresses are transparency among LAN as long as you use the
translation bridge, but the frame format may be different.
When you are using the translation bridge as DECbridge5xx/6xx,
if system A sends Ethernet V2 frame on ethernet, it will be
FDDI SNAP-SAP with Zero OUI frame at system B on the FDDI ring.
if system A uses IEEE802.2 LLC frame, it will be FDDI 802.2 LLC
in the ring.
if system A uses 802.2 SNAP-SAP, it will be FDDI SNAP-SAP with
original OUI.
-Naoki
|
| 465.4 | Completely transparent at the application level | STAR::SALKEWICZ | It missed... therefore, I am | Fri Mar 13 1992 10:22 | 14 |
| And assuming the two VAXen are running VMS, any application that runs
today on the Ethernet can run on the FDDI talking to other nodes
on either FDDI or Ethernet (bridged). The frame differrences on
the wire/fibre are comkpletely transparent to the VMS application.
All the VMS application sees on each end is the data portion. An
application doesn not need to worry about the differences in the
franme headers,.. it will never see them.
Applications that run in promiscuous mode would need to worry about the
differences because those applications do receieve the full frame, with
the different headers.
/Bill
|
| 465.5 | | KONING::KONING | Paul Koning, NI1D | Mon Mar 16 1992 11:03 | 4 |
| Re .2: please DON'T make a throw-away comment about something not working.
Instead, give some information, so it can be fixed!
paul
|