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Non-Tech : MB TRADING -- Ignore unavailable to you. Want to Upgrade?

To: Carole Olkowski who wrote (5136)	7/19/1999 9:53:00 PM
From: -	Read Replies (1) \| Respond to of 7382

Probably the best real-world application for IP Multicasting they've found to date! This requires Router software upgrades. It allows them to distribute broadcast information much more efficiently across the NASDAQ backbone... Multicast transmissions in a data network are sent once, received by many (like a broadcast TV signal) -- instead of the more conventional 'Unicast' (point to point) transmissions, which must be repeated for every user, congesting he network and increasing transmission delays (latencies), often resulting in dropped traffic and server errors (as in, "I can't get my quotes). -Steve

To: Carole Olkowski who wrote (5136)	7/19/1999 10:55:00 PM
From: wily	Read Replies (1) \| Respond to of 7382

>> Tom (Davin???)<< Sorry, didn't get a last name. I get the general idea of what's going on. The technical stuff leaves me thrumming my lips. Too bad someone at Nasdaq couldn't lay it out nice and plain so everyone could understand. I'm pretty satisfied, though, that it's not an MB or Townsend problem. Data Feed Required Bandwidth Level 1 (A-Z) 98 kbps NQDS (A-E) 90 kbps NQDS (F-N) 90 kbps NQDS (O-Z) 90 kbps NTDS (A-J) 72 kbps NTDS (K-Z) 72 kbps Total 512 kbps Does this chart mean for instance that the level 1 data for all the stocks in the Nasdaq Universe can fit within 98 kbps? That seems pretty amazing. Thanks very much for the info/interpretation and the link. w