[ns] AW: AW: routing problem

[Chan Kwang Mien <Kwang-Mien.Chan.GP@icn.siemens.de>]

	thanks for your suggestion. 
	if the dst addr of packets from a is b, then there must be a TCP
connection established between a and b, isn�t it ? how does b forward these
packets 
	to e ? do i also need to establish another TCP connection between b
and e ?
	thanks.


> LanNode instproc add-route is a null method, in vlan.tcl. 
> 
> Since a LAN is a shared media, the route to b or d or e is the same: Link
> Layer.
> 
> It is more a matter of addressing than a matter of routes. 
> 
> You could modify LanRouter.
> 
> It looks to me that the functionnality you are looking for is more
> "agent-like". 
> Wouldn't you be better off with an agent that will set the dst address of 
> packets emanating from a to b's address so that node b gets them and do
> the 
> processing and then sends them to e?
> 
> 
> 
> > > >    i have this LAN topology.
> > > > 
> > > > 
> > > >        -----------------
> > > >         |    |    |    | 
> > > >        a   b   c   d
> > > >                       |
> > > > 		   e
> > > > 
> > > >      Node a is sending data to Node e. Packets from Node a will pass
> > > through
> > > > Node d then to Node e.
> > > >      is it possible to let the packets from Node a to go to Node b
> first
> > > so
> > > > that Node b can do some processing. Node b then send the packets to
> Node
> > > d
> > > > and finally to Node e.
> > > > 
> > > >      i tried using the add-route command to configure Node a to have
> a
> > > route
> > > > to Node b. however, it does not seem to 
> > > > work cos packets are still forwarded to Node d.
> > > 
> > 	  i was thinking of adding " $lannode add-route E B" command in the
> > add-route method in the class
> > 	LanNode in vlan.tcl. This is done so that traffic from A will be
> > diverted to B when the virtual node receives
> > 	the traffic from A. Do you think it is workable ? thanks.
> > 
> > 	rgds,
> > 	kwang mien
> 
> Tarik