[Olsr-dev] Same-IP on multiple interfaces problem replication
Tue Sep 15 22:42:59 CEST 2009
after this "same-IP on multiple interfaces discussion" I was trying to
replicate these problems in my test setup but was unable to do so. Two nodes
(each has same IP on both wired ethernet and wifi) connected by wired
ethernet and visible via wifi.
By using the netem qdisc I simulated different packet losses so to simulate
different LQs. In each case both nodes correctly detected the better link and
properly set up the routes. Since olsrd binds to interfaces and not IPs this
is understandable as the incoming interface can be uniquely identified
regardless of its IP address.
So how can I replicate this problem here in order to better understand what
the problem is exactly ? I understand that 2-hop neighbours (and more distant
nodes) will not be able to see which interface exactly is the better one
(because there is no interface identifier in olsr packet format), but I don't
see why this information is relevant as nodes will simply emit "aggregated"
information (in this case the ETX of the best link between the two). I assume
that this latter issue is the real problem here ? In what case will this
information cause problems for routing and how can I replicate this in my
Jernej Kos <(spam-protected)>
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