Tom, you have to remember that when using an Internet VPN, there are a lot
of pieces of equipment between you and your corporate VPN server. Each of
those ISP routers and switches add some latency, and on top of the
additional latency there is likely to be more jitter. (variable latency due
to variable traffic patterns)
Given this, depending on how many hops are between your ISP and the ISP of
your company, it may very well be that there is more latency on your 50kbps
dialup VPN and this latency can translate into slower response. There may
also be some packet loss involved that could hurt performance as well.
If you truly want to see "best case" performance on your VPN, you'll need to
dial directly into the same ISP that connects your VPN box to the Internet.
Even then, the performance may not by much better than direct dial, a lot
depends on the quality of the ISP. (ie. Tier 1 vs mom and pop)
HTH,
Kent
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Tom Richs
Sent: Thursday, August 30, 2001 1:47 PM
To: [EMAIL PROTECTED]
Subject: VPN throughput [7:17943]
I have a T1 coming into my VPN 3000 Concentrator. When I dialup to the
Internet and get a connection rate of 50.6 Kbps and then VPN into the
corporate LAN via this connection the throughput is slower than if I dialed
directly into the corporate LAN via a direct dialup and getting a connection
rate of 28.0 Kbps. I know that there's some overhead involve with VPN and
it's encryption but this throughput doesn't sound right. Any input/advice
would be appreciated. Thanks.
Tom
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