Most ISP's won't do bridging anymore - it's less efficient with IP space,
can cause split horizon issues, or will cause the broadcast traffic
problem Bob mentioned.  Also, Qwest has been hinting for awhile now that
they are going to do a push to get ISP's off of it.

The only way of doing bridging mode that eliminated the split horizon and
broadcast problems was to give each customer their own BVI, which means
you are burning a minimum of 4 IP's per customer.  Imagine an ISP with a
thousand DSL customers applying for additional space from ARIN with 3000
wasted IP's...


Adam Maloney
Systems Administrator
Sihope Communications

On Sat, 19 Apr 2003 waynej at dccmn.com wrote:

> One of the issues I had was my old ISP insisted that I run my cisco in
> router mode and my Freeswan doesn't like that so I had to switch ISPs to
> get bridge support.  In router mode, your outside IP address <> your eth0
> IP address cause it's doing NAT.  Freeswan sees this is a man-in-middle
> attack.
> 
> Does the ActionTec support bridging?
> 
> 
> 
> 
> 




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