[Olsr-users] olsrd settling time
Wed Oct 29 18:43:49 CET 2008
You've got me curious - I've always run my mesh network with each node
having an IP all on the same subnet with the underlying wireless being
setup for Ad-hoc mode (Atheros MADWIFI 0.9.4 branch). I've found that
using the standard broadcast address for the single subnet works just fine.
i.e. If I were to do your configuration I would do something like:
Node 1: 10.5.0.1 mask 255.255.255.0 broadcast 10.5.0.255 (on
Node 2: 10.5.0.2 mask 255.255.255.0 broadcast 10.5.0.255 (on
Node 3: 10.5.0.3 mask 255.255.255.0 broadcast 10.5.0.255 (on
Node 4: 10.5.0.4 mask 255.255.255.0 broadcast 10.5.0.255 (on
I then have separate radios that are 2.4 ghz subnets configured as HNAs
in olsr configuration. They use the strategy 10.2.X.1 where X is the
node number and they are each on interface ath0. So for Node 1 he would
use 10.2.1.1 on ath0 for his presence on the 2.4 ghz subnet and hand out
IP addresses in DHCP range 10.2.1.100 - 10.2.1.200 for anyone who wants
to get on that node w/ standard 2.4 ghz gear. I run my mesh at 5 ghz to
stay out of the way of the 2.4 stuff. The other nodes would realize
through HNA that subnet 10.2.1.0/24 is available via 10.5.0.1 on the mesh.
I'm curious why you needed to set your broadcast address to an all 1's
setup (255.255.255.255) to make things work?
The only situation I could think of is if a bunch of ad-hoc nodes are on
** different ** subnets but still "peering" with OLSR.
Node 1: 10.5.0.1 mask 255.255.255.0 broadcast 255.255.255.255
Node 2: 10.5.0.2 mask 255.255.255.0 broadcast 255.255.255.255
Node 3: 10.5.1.1 mask 255.255.255.0 broadcast 255.255.255.255
Node 4: 10.5.1.2 mask 255.255.255.0 broadcast 255.255.255.255
I could see the need to have a couple of different Mesh subnets to
logically divide up the network, but if a lot of nodes are needed beyond
a Class C for instance, a Class B setup could be used.
The above seems odd to me and note that I've never tried it -- so don't
assume it would work. I'll be curious to hear what the folks on the
More information about the Olsr-users