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| Dr. VPNlabs Question (Archived) |
| Jason Cota |
posted: 2002-03-05 13:43:35
I am looking for some sort of document/white paper
that does a comparative analysis of ISDN
vs.Frame-Relay vs. VPN. I believe our organization
( msa.com ) will be implementing VPN but I would
like to know where the saving/costs are
represented in set-up, implementation and support
for the various technologies. We provide software
solutions to the majority of Cable Networks in the
U.S. and are evaluating these various technologies
for all concerned. I would appreciate any help
that you could provide. |
| Dr. VPNlabs |
posted: 2002-03-05 16:03:43
Here is a white paper
that compares Frame Relay
to VPN:
http://www.firstvpn.com/p
apers/xedia/Xedia%20FRvsI
P.pdf
There are
several considerations to
look at when comparing
Frame-Relay to
VPN.
Accessibility:
Where are the WAN
endpoints? If this is a
multinational WAN, the
Network Access Provider
may not have POPs where
you are trying to
connect.
VPNs are a
great solution because
they can be built NSP
(Network Service
Provider) independent
which means you can
access the VPN network
anywhere you have access
to the Internet. The
Frame Relay network will
be much more static and
the NSP will need a month
to three months to add
another site to your
network.
QOS:
F
rame Relays have better
SLAs usually compared to
VPNs although this is
changing.
Remote
Access:
VPNs support
remote access while FR
does
not.
Flexibility:<
br>VPNs are more flexible
but also need more
support and are more
difficult to implement.
Pricing:
A
Frame-Relay connection
typically will be more
expensive from a fixed
monthly cost
perspective.
What
are you trying to
accomplish with this
WAN?
There are several
flavors of VPN that I
recommend looking into:
IP VPN, Managed VPN,
manual CPE based
VPN.
IPVPN will be
very similar to a Frame
Relay network. An
outsourced Managed VPN
will also be similar to a
FR network and will add
remote access
capabilities. A manual
CPE-based VPN or Customer
Premise Equipment VPN
allows the most
flexibility but also
requires the most
planning and maintenance.
You would use inhouse
network expertise or a
security/network
consultant to build and
maintain this type of VPN
solution.
If you
can provide us with more
information about the
specific tasks you wish
to accomplish we can
better assist you with
your
decision.
cheers,<
br>Dr. VPN Labs Staff
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