Re: [openss7] Multi-Homing

[Chuck Winters <cwinters@atl.lmco.com>]

Brian,
	Here is a better explanation of what is going on.
	The setup is 2 machines back to back connected with crossover cables.  Each machine
has 2 ethernet cards.  I am running a reader program on machine R(192.168.1.33, 192.168.10.33)
and a writer program on machine W(192.168.1.34, 192.168.10.34). R & W are both set to explicitly 
bind to both of their addresses. 
	Now I ran 2 scenarios.  
	1)  The order of the addresses sent to bind in R was .1.33, .10.33.  The order of the addresses
sent to bind on W was .1.34, .10.34.  I started up 2 ethereal's.  One on eth0(.1 subnet) and one on 
eth1(.10 subnet).  W was setup to send to .10.33(eth1).  Ethereal dumps showed that SACK, HEARTBEAT,
HEARTBEAT_ACK were all transmitted over the .1(eth0) interface.  The DATA chunks were transmitted 
over the .10(eth1) interface.  
	2)  The setup was the same, except this time W was setup to send to the .1(eth0) interface.  Ethereal
dumps showed that all HEARTBEAT, HEARTBEAT_ACK, SACK, and DATA chunks were sent over the .1(eth0) interface
and no traffic was observed over the .10(eth1) interface.

	This may help out a little with the problem.  

Chuck
 
On Wed, Jul 18, 2001 at 03:12:52PM -0400, Chuck Winters wrote:
> Brian,
> 	I had done some tests with the multi-homing capabilities.  What I found is that
> there are no heartbeats going over the other interfaces, and after the primary
> interface is down for a few SACK's, the receiving host locks up.  
> 	I would like to help track this bug down.  I just need some help on where to start.
> 
> Thanks,
> Chuck
> 
> -- 
> Chuck Winters                            | Email:  cwinters@atl.lmco.com
> Distributed Processing Laboratory        | Phone:  856-338-3987
> Lockheed Martin Advanced Technology Labs |
> 1 Federal St - A&E-3W                    |
> Camden, NJ 08102                         |

-- 
Chuck Winters                            | Email:  cwinters@atl.lmco.com
Distributed Processing Laboratory        | Phone:  856-338-3987
Lockheed Martin Advanced Technology Labs |
1 Federal St - A&E-3W                    |
Camden, NJ 08102                         |