| Title: | FDDI - The Next Generation |
| Moderator: | NETCAD::STEFANI |
| Created: | Thu Apr 27 1989 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2259 |
| Total number of notes: | 8590 |
Some conventional Bridge products (e.g. from Vitalink) have features to safeguard against multicast/broadcast storms and unknown singlecast destinations from flooding the wide area network (serial link). The bridge keeps a counter of the amount of multicast/broadcast received off the LAN for one second intervals. If the number goes above a selected ceiling, the bridge discards any multicast/broadcasts above that point until the one second period has elapsed and the counter resets back to zero. I know many customers, that are scared of the scenario, that a host directly attached to a WC, goes crazy and floods all the Enet's. And this b.t.w is used by FDDI Router vendors as a argument against us ! Cern as you probably know has built there own multicast quencher ! Do we have any plans to add such a feature for our FDDI bridge products ?? Cheers Walter.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 407.1 | Multicast limiting: Digital has it later | ORACLE::WATERS | I need an egg-laying woolmilkpig. | Tue Dec 03 1991 08:06 | 3 |
For the future, high-end stuff, multicast rate limiting will be
provided on day one. For today's bridges, I can't say whether a
field upgrade is possible.
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| 407.2 | SYORPD::DEEP | Bob Deep @SYO, DTN 256-5708 | Thu Jan 02 1992 08:51 | 7 | |
There was some talk of doing this... You might want to check with Karl Pieper (DTN 226-5160) regarding the status of this issue. As I understood it, it wasn't a complicated issue, but it did need to have sufficient business at risk to justify the engineering effort. Bob | |||||