| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2626.1 | 10BaseFL versus 10BaseFB | LEMAN::PAIVA | Hawkeye - Network Support @GEO | Thu Aug 10 1995 04:41 | 7 |
| Yes, 10BaseFL versus 10BaseFB is an issue. Digital products are only
10BaseFL. If Cabletron's are 10BaseFB, then you should choose to use
only one of the manufacturers' repeaters...
Pedro PAIVA
Network Support Team
|
| 2626.2 | How much of a problem? | HACMAN::HACK | Don Hack, Network Services | Thu Aug 10 1995 10:42 | 13 |
| re: .1
When you say 10BaseFL and 10BaseFB should not be connected together,
what will be the results?
- No traffic will get throught
- some packets will be regularly trashed
- works 95% of the time
Also, *how* backward compatable is our 10Base-FL implementation to
FOIRL standard? The Cabletron boxes claim to meet IEEE 802.3 FOIRL
specifications. Is there a real difference between IEEE 802.3 FOIRL
and just claiming FOIRL support?
Thanks ... Don
|
| 2626.3 | don't connect FL to FB | LEMAN::PAIVA | Hawkeye - Network Support @GEO | Fri Aug 11 1995 10:15 | 9 |
| I don't know what would be the result of connecting a 10BaseFL to a
10BaseFB but these are definitely different standards.
As far as I can remember, 10BaseFL is the standard that evolved from
FOIRL...
Cheers,
Pedro
|
| 2626.4 | This is what I have been told...... | CGOOA::PITULEY | Ain't technology wonderful? | Fri Aug 11 1995 12:24 | 9 |
| 10baseFB is some kind of proprietary synchronous communications
protocol that was developed for use in backbones. Essentially, it
allows distances longer than the 10baseFL spec due to the fact that it
does wierd things with timing.
Brian Pituley
NPC, Calgary
|
| 2626.5 | | NETCAD::B_CRONIN | | Fri Aug 11 1995 12:40 | 6 |
|
10Base-FL is a 2 km version of FOIRl. It interoperates with FOIRl, but
can go the longer distance. If Cabletron says they meet FOIRL, that
means they should interoprate with 10BASE-Fl, but not at distances
longer than 1 km.
|
| 2626.6 | You probably need more bridges and routers. | MSDOA::REED | John Reed @CBO = Network Services | Mon Aug 21 1995 01:24 | 11 |
| A 10BaseFL transceiver or repeater or Star, cannot communicate with a
10BaseFB device. If you connect them to each other, NO TRAFFIC will
pass. I have a customer with this very config (built last month,
thanks to a Sales Rep, who will remain nameless), and it does not work.
Since you are getting traffic, you are following the 10BaseFL spec. I
think that the problem is repeater counts, and packet delay. I would
be that many late collisions are occuring. Do a timing (model 1 and
2) analysis on the worse case link, and see what you get.
JR
|