Jimmy,

You are right, this is plain IPSec traffic.

Regarding your second question - standard crypto maps are
point-to-multipoint concept, that's why they don't know which peer to send
the multicast traffic to. SVTI is a point-to-point connection, multicasts
will be blindly sent through the tunnel.

Regards,

Piotr Kaluzny
CCIE #25665 (Security), CCSP, CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com




On Wed, Mar 17, 2010 at 12:38 PM, Jimmy Larsson <[email protected]> wrote:

> Hi
>
> I´ve read the url but still doesn´t really get it. The configuration looks
> exactly like mine except for the addition of "tunnel mode ipsec ipv4".
>
> As far as I can figure the "tunnel mode ipsec ipv4" changes the tunnel from
> running gre into using plain ipsec. Right? I dont have access to my lab at
> the moment so I cant verify, but without "tunnel mode ipsec ipv4" the
> traffic is GRE with a ipsec-content. When adding "tunnel mode ipsec ipv4" I
> change the tunnel into running native ipsec, which should mean that a
> sniffer should display ESP transit-traffic.
>
> Or am I wrong?
>
> If I am right, what happened to the limitation of ipsec when it comes to
> multicast-traffic?
>
>
> Br Jimmy
>
>
> --
> -------
> Jimmy Larsson
> Ryavagen 173
> s-26030 Vallakra
> Sweden
> http://blogg.kvistofta.nu
> -------
>



-- 
Piotr Kaluzny
CCIE #25665 (Security), CCSP, CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
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