On 5/5/2011 12:24 AM, David Brodbeck wrote:
The problem I've always found with bridged solutions is they don't
cope well under heavy traffic loads when the VPN link is slower than
the LANs they're bridging between.  And the VPN link is usually slower
if it's over a WAN.  The link tends to get saturated.

There is no inbuilt reason why a L2 VPN is more easily saturated
than a L3 VPN.

After all protocols doing bulk transfers should - and mostly - use
TCP which autotunes the rate of sent packets. And TCP should be
able to saturate the lower-bandwidth link of the whole path. That's
normal and desirable.

Some care must be taken with the broadcast and multicast traffic
which goes through the L2 VPN.

Just my 2 cents, Nikos
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