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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ATM vs. DS3
> From: Josh Beck <[email protected]> > Now, the question is, what is the overhead of the serial (ppp?) protocol > running over the T3? Since it is point to point, and not addressed, it > should be less, or is this not the case? > The framing overhead for PPP over DS3 is about 7 bytes per packet. You can make it as few as 4 (PPP header compression) or as long as 10 (32-bit checksum). I don't know anyone shipping PPP data compression yet at those speeds, although I've heard of a project using multiple Stac LZS chips. Anyway, you will get a lot better performance out of a PPP link than an ATM link; certainly in the short term, and probably in the long term. [email protected] Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32 [email protected] Key fingerprint = 2E 07 23 03 C5 62 70 D3 59 B1 4F 5E 1D C2 C1 A2
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