GRE to Cisco

[Tuc at T-B-O-H.NET]

> 
> On 10/24/06, Tuc at T-B-O-H.NET <ml at t-b-o-h.net> wrote:
> > Hi,
> >
> >         I was wondering if anyone has used GRE tunnel extensively. I'm trying to
> > connect a FreeBSD system to a Cisco router. For testing ONLY I'm trying to do
> > it to two devices on the same subnet. When I bring the gre up, I can't
> > ping the other side. I have my FreeBSD at 192.168.3.21 and gre0 looks like :
> >
> > gre0: flags=9051<UP,POINTOPOINT,RUNNING,LINK0,MULTICAST> mtu 1476
> >         tunnel inet 192.168.3.21 --> 192.168.3.149
> >         inet6 fe80::212:3fff:fedd:58b2%gre0 prefixlen 64 scopeid 0x7
> >         inet 192.168.3.21 --> 192.168.3.149 netmask 0xffffffff
> >
> >         My Cisco is at 192.168.3.149 and looks like :
> >
> > interface Tunnel0
> >  ip unnumbered Ethernet0
> >  tunnel source Ethernet0
> >  tunnel destination 192.168.3.21
> > !
> > interface Ethernet0
> >  ip address 192.168.3.149 255.255.255.0
> >
> >         Ideas?
> 
> I'm not very experienced with this, but if your routing table
> lists 192.168.3.149 as reachable through the tunnel, then
> the tunnel itself can't function, naturally.
>
	It looks like the man page and lack of sleep made this a
disaster... I've changed things around :

FREEBSD:
ifconfig wi0 192.168.3.21 netmask 255.255.255.0 up
ifconfig gre0 unplumb
ifconfig gre0 create
ifconfig gre0 192.168.4.1 192.168.4.2 netmask 0xffffff00 link0 up
ifconfig gre0 tunnel 192.168.3.21 192.168.3.149


Cisco:

interface Tunnel0
 ip address 192.168.4.2 255.255.255.0
 tunnel source Ethernet0
 tunnel destination 192.168.3.21
!
interface Ethernet0
 ip address 192.168.3.149 255.255.255.0


        But still can't ping 192.168.4.2 .

                        Thanks, Tuc