Re: Speed
Daniel Linder <[email protected]>
| Newsgroups | gmane.comp.security.vpn |
|---|---|
| Message-ID | <[email protected]> |
--- [email protected] wrote: > I just put a netopia VPN up between Andover NJ and Knoxville Tenn, > using safenet as the > IPSec client. Any ideas why it is so slow, and how to speed it up? > It is an accountant > looking at a 168 meg quickbooks file. I suspect its size matters but > any ideas? First off, what are the upload and download speeds of each end of the VPN? Just doing the math, a 168MB file on a 10Mb LAN connection (or 11Mb wireless) would take 3 minutes to copy assuming 70% efficiency of the TCP/IP ethernet. Now, if the links on each end are T1's (1.544 Mbit/sec) the time goes up to 21 minutes (again at 70% efficency). Computations: 128k: (168MBytes) / (128kbit/sec) * (8192bits/Byte) / (0.70) = 15360 sec (4.25 hours!) T1: (168MBytes) / (1.544Mbit/sec) * (8bits/Byte) / (0.70) = 1243 sec 10Mb: (168MBytes) / (10Mbit/sec) * (8bits/Byte) / (0.70) = 192 sec 100Mb:(168MBytes) / (100Mbit/sec) * (8bits/Byte) / (0.70) = 19 sec What times were you expecting? Dan __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree