RE: [Tipc-discussion] How good is TIPC on various topologies ?

[Kevin K. He <he...@ya...>]

I didn't mean that two PCs intereconnted with two NICs on each. 
What I wish to convey is an analogy of two switches interconnected 
in the following way.
  
  ---------- 1/1  2/1  -----------   
  |switch 1|----------|  switch2 |
  |        | 1/2  2/2 |          |
  |_______ |----------|__________|
 
 Assuming all ports 1/1,1/2,2/1,2/2 are in the same Vlan (broadcast
 domain). Then the above topology has a "loop" because broadcast
 or flooded frames from switch 1 port 1/1 will be forwarded to 2/1
 and then flooded by switch 2 to 2/2 , then back to switch 1 through
 1/2, then switch 1 again flood the frame to 1/1,...,etc.  Thus the
 frame will be flooded forever in a loop.
 
 I'm trying to understand what is the situation if I use TIPC as 
 managment/control plane IPC between the two switches (imagine that
 the two switches form a single stack). I guess my analogy using 
 two PCs is inaccurate since PC usually doesn't perform the "bridging"
 function between ports.
 
 
 Thanks
 
 Kevin
 
> 
> 
> --- "Ling, Xiaofeng" <xia...@in...> wrote:
> > 
> > > > How about the following toplogy where a loop between two PCs
> > > > exist ?  Essentially the following toplogy exists when STP is 
> > > > turned off. If TIPC can tolerate this topoplogy we may not 
> > > > need a underlying STP to resolve L2 loops.
> > > > 
> > > >   eth1           eth0
> > > > PC1---------  /----PC2---|
> > > >  |eth0          | /           |
> > > >  |________switch_________|
> > > > 
> > > I have not tried in such condition, but  I think logically 
> > > TIPC can work in such topology.
> > > 
> > If this means two PC with two ethercard to each other, then there will
> > be two link for the two node.
> > and it will automatically perform load balance and failover.