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

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

Thank you for the clarification. 
In fact the reason I ask about the topology is that I investigating
TIPC as the managment IPC used in stacked switches environment. 
One concern in switch/L2 environment is about broadcast storm
in a topology containing loops.
Usually we run STP to form a loop-free topology among switches.
I'm just thinking whether TIPC can eliminate the need of STP. 
It seems to me so far TIPC is working one layer above L2 and
STP is still necessary to provide loop free l2 broadcast domain
to TIPC.
 
Will TIPC send broadcast (DMAC=ff:ff:ff:ff:ff:ff) frame for 
control/managment plane frames in the negotiation
stage and unicast frame for data plane traffic ?
 
Thanks
 
Kevin
 
> --- "Guo, Min" <mi...@in...> wrote:
> >  
> > 
> > > -----Original Message-----
> > > From: tip...@li... 
> > > [mailto:tip...@li...] On 
> > > Behalf Of Kevin Kaichuan He
> > > Sent: Friday, March 12, 2004 1:50 PM
> > > To: tip...@li...
> > > Subject: [Tipc-discussion] How good is TIPC on various topologies ?
> > > 
> > > Will TIPC works well with the following topology ?
> > > 
> > > PC1       PC2        PC3
> > >  |eth0     |eth0      |eth0
> > >  |________hub_________|
> > > 
> > 
> > Yes
> > > 
> > > How about the following topology ? Will client on PC1 reach 
> > > server on PC4 automatically via PC3 ?
> > > 
> > >                         eth1              eth0
> > > PC1       PC2        PC3--------- hub2 -----PC4
> > >  |eth0     |eth0      |eth0
> > >  |________hub1________|
> > 
> > Yes
> > > 
> > > How about the following topology where a self-loop exists ?
> > >    eth1
> > > PC1---------
> > >  |eth0     |
> > >  |________hub
> > 
> > Yes
> > > 
> > > 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.
> > 
> > > 
> > > When STP is enabled on the switch the above toplogy will 
> > > become the following:
> > > 
> > >             
> > > PC1                     PC2
> > >  |eth0                   |
> > >  |________switch_________|
> > > 
> > > 
> > > Thanks a lot!
> > > 
> > > Kevin
> > > 
> > > 
> > > 
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