IPSec and routing

IPSec and routing

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Subject Author Date
IPSec and routing a 03-12-2008
Posted by a on March 12, 2008, 4:35 am
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Hi

I need to set up an IPSec connection between 2 router for the traffic
between 2 subnets behind. Besides, setting up the Phase 1, phase 2 including
all the ACL, transform....., how should I set the route between the subnet?
static route or eigrp? How should I set the access list to let the routing
protocol get through the IPSec?

Thanks



Pure Networks
Posted by L J on March 12, 2008, 5:08 am
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create an ipsec encrypted gre tunnel betweeen the routers in order to
exchange dynamic routing information, your ipsec-isakmp ACL will handle the
LAN to LAN traffic over the tunnel

> Hi
>
> I need to set up an IPSec connection between 2 router for the traffic
> between 2 subnets behind. Besides, setting up the Phase 1, phase 2
> including
> all the ACL, transform....., how should I set the route between the
> subnet?
> static route or eigrp? How should I set the access list to let the routing
> protocol get through the IPSec?
>
> Thanks
>
>



Posted by a on March 13, 2008, 3:19 am
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Is that means, if I just set up the Phase 1 and phase 2 and the eigrp, but
no other things; the routing protocol will not go through. Then, the empty
routing table is not able to direct the packets to the correct hop. Am I
right?

Thanks

:13tf7bmmhndsgf0@corp.supernews.com...
> create an ipsec encrypted gre tunnel betweeen the routers in order to
> exchange dynamic routing information, your ipsec-isakmp ACL will handle
the
> LAN to LAN traffic over the tunnel
>
> > Hi
> >
> > I need to set up an IPSec connection between 2 router for the traffic
> > between 2 subnets behind. Besides, setting up the Phase 1, phase 2
> > including
> > all the ACL, transform....., how should I set the route between the
> > subnet?
> > static route or eigrp? How should I set the access list to let the
routing
> > protocol get through the IPSec?
> >
> > Thanks
> >
> >
>
>




Posted by Doan on March 13, 2008, 2:36 pm
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Yes. IPSec is IP only, no multicast. Since EIGRP uses multicast to
exchange routing info, it won't work. As suggested, the solution is
IPSec + GRE.

Doan

On Thu, 13 Mar 2008, a wrote:

> Is that means, if I just set up the Phase 1 and phase 2 and the eigrp, bu=
t
> no other things; the routing protocol will not go through. Then, the empt=
y
> routing table is not able to direct the packets to the correct hop. Am I
> right?
>
> Thanks
>
> :13tf7bmmhndsgf0@corp.supernews.com...
> > create an ipsec encrypted gre tunnel betweeen the routers in order to
> > exchange dynamic routing information, your ipsec-isakmp ACL will handle
> the
> > LAN to LAN traffic over the tunnel
> >
=2E.
> > > Hi
> > >
> > > I need to set up an IPSec connection between 2 router for the traffic
> > > between 2 subnets behind. Besides, setting up the Phase 1, phase 2
> > > including
> > > all the ACL, transform....., how should I set the route between the
> > > subnet?
> > > static route or eigrp? How should I set the access list to let the
> routing
> > > protocol get through the IPSec?
> > >
> > > Thanks
> > >
> > >
> >
> >
>
>
>
>


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