VPN bandwidth question

VPN bandwidth question
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Subject Author Date
VPN bandwidth question Rob 08-12-2004
Posted by Rob on August 12, 2004, 4:01 pm
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Hi,

I have vpn connection using 515 on head office and 501 on branches, I was
wondering if there is anyway to assign a certain amount of available
Internet bandwidth to VPN connection, so downloading huge files and
streaming wont impact on the VPN connection, if so can you give me some help
to perform it.

Thanks in advance for any help-Rob






Posted by Walter Roberson on August 12, 2004, 10:32 pm
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:I have vpn connection using 515 on head office and 501 on branches, I was
:wondering if there is anyway to assign a certain amount of available
:Internet bandwidth to VPN connection, so downloading huge files and
:streaming wont impact on the VPN connection, if so can you give me some help
:to perform it.

PIX does not support that. You would need to interpose a device
between your LAN and the PIX in order to achieve your goal.
--
Those were borogoves and the momerathsoutgrabe completely mimsy.


Posted by Rob on August 13, 2004, 9:48 am
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> :I have vpn connection using 515 on head office and 501 on branches, I
was
> :wondering if there is anyway to assign a certain amount of available
> :Internet bandwidth to VPN connection, so downloading huge files and
> :streaming wont impact on the VPN connection, if so can you give me some
help
> :to perform it.
>
> PIX does not support that. You would need to interpose a device
> between your LAN and the PIX in order to achieve your goal.
> --
> Those were borogoves and the momerathsoutgrabe completely mimsy.

Any kind of Cisco router can do this job? or I have to look for any certain
series?
Thanks again-Ali






Posted by Walter Roberson on August 15, 2004, 5:40 am
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|> :wondering if there is anyway to assign a certain amount of available
|> :Internet bandwidth to VPN connection, so downloading huge files and
|> :streaming wont impact on the VPN connection,

|Any kind of Cisco router can do this job? or I have to look for any certain
|series?

If you can define the characteristics of the different bandwidth
streams in terms of ACLs, then there are a number of Cisco
products that could be used. Generally speaking, you would be
creating a route map upon the ACL, and engaging Policy Based Routing
with Traffic Policing. But Traffic Policing -drops- packets if
you go over the limit (and for TCP expects the remote end to notice
the drop and throttle down the window size). If what you want
is to instead buffer the packets and fit them in as bandwidth
permits, with first priority going to the most important streams,
then you want Traffic Shaping, which not as many Cisco devices
support.

If you cannot define the characteristics in terms of an ACL,
such as if your users are doing P2P sharing via port 80, then
you should probably look at a Packeteer (non-Cisco) device.
--
Contents: 100% recycled post-consumer statements.


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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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