This is correct, VPN, depending on what features are implemented, can add
significant size to packets. Cisco sets the default Payload size for IPSec
on the PIX to 1380 to make up for the fact that there can be IPSec headers
close to 120 bytes.
-----Original Message-----
From: Peter Slow [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 24, 2001 9:07 AM
To: [EMAIL PROTECTED]
Subject: RE: vpn speed [7:13499]
correct me if im wrong, but encryption and compression are COMPLETELY
different, and in most cases, encryption results in LARGER payloads.
/me hangs his head in dissapointment
-Peter
-----Original Message-----
From: Patrick Ramsey [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 24, 2001 11:13 AM
To: [EMAIL PROTECTED]
Subject: Re: vpn speed [7:13499]
I'm not exactly sure where the 128k came into play.... but you are right
about end point to endpoint. If either of the ends tops out at 64k, then the
throughput will only be 64k. Regardless of compression/and or vpn
acceleration.
-Patrick
>>> "Allen May" 07/24/01 11:02AM >>>
I could be off here...but I believe the accelerator card only helps the cpu
intense part of encrypting/decrypting traffic. You would still be limited
to internet speed which involves amount of traffic between endpoints, etc.
Maximum would be 128K unless you have alot of traffic going through that can
be compressed. In that case that traffic can go faster than 128K but most
files that can be compressed on the fly with noticable difference are
uncompressed files such as .bmp, .txt, comma delimited files, etc.
Allen
----- Original Message -----
From: "Farhan Ahmed"
To:
Sent: Tuesday, July 24, 2001 9:33 AM
Subject: vpn speed [7:13499]
> lets say we have 2 cisco 1720 with vpn accelerator card and both have a
64k
> connection to internet
> > what would be the speed of the tunnel
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