how well does batman-adv scale

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000 nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

i think this could scale , but you will need sufficient power / ethernet capacities at the nodes.

and the biggest problem may be that these endpoints make much noise on the layer2 level.
(disovery protocolls and stuff like this)

you could easily imagine what would happen if you have a layer2 switch with 100000 ports.

i think that most of the time you will not do this, and implement some sort of routing between some clouds of batman-adv networks.

Quoted 11 lines · fuumind

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000 nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

--
make the world nicer, please use PGP encryption

i think this could scale , but you will need sufficient power / ethernet
capacities at the nodes.

and the biggest problem may be that these endpoints make much noise on
the layer2 level.
(disovery protocolls and stuff like this)

you could easily imagine what would happen if you have a layer2 switch
with 100000 ports.

i think that most of the time you will not do this, and implement some
sort of routing between some clouds of batman-adv networks.

Quoted 13 lines · fuumind

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000
nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

Hi Jens!

By 'sufficient power', do you mean processing power to handle overhead traffic? I'm imagining a network which primarily connects WLANs.

Clouds of batman-adv networks sounds like a good idea. Any idea about how to implement the interfaces between these clouds? How big should they be allowed to grow before forming a new cloud?

fuumind

ons 2017-04-26 klockan 17:10 +0200 skrev jens:

Quoted 33 lines

i think this could scale , but you will need sufficient power / ethernet
capacities at the nodes.

and the biggest problem may be that these endpoints make much noise on
the layer2 level.
(disovery protocolls and stuff like this)

you could easily imagine what would happen if you have a layer2 switch
with 100000 ports.

i think that most of the time you will not do this, and implement some
sort of routing between some clouds of batman-adv networks.

Quoted 13 lines · fuumind

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000
nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000 nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

Hi,

"works well" depends much on  your scenario.

I've seen many well-working networks with 100-300 nodes. There are Freifunk
community networks with over 1000 nodes running batman-adv (i.e. "standard"
users like laptops and smartphones), but they employ a lot of filtering to
avoid too much broadcast.

Unless you have special restrictions like minimal broadcast traffic or high
capacity on the wireless links, memory and CPU, I would not recommend to plan
for 10 000 nodes and beyond.

Cheers,
     Simon

Quoted 12 lines · CEST fuumind

Hi list!

Been lurking for almost a year on the battlemesh list and recently joined here as well.

I'm curious about how well batman-adv scales. Would a network of 10 000
nodes work well? What about 100 000 nodes or 1 000 000?

Thanks!
fuumind

Ok, so clouds of a few hundred nodes would work reasonably well and at the same time keep customization to a minimum.

What makes OSPF a better candidate for interfacing between the clouds? Does it keep a more limited routing table and thus minimize overhead traffic? I haven't been able to figure it out good enough yet.

Hi,

Quoted 4 lines · CEST fuumind

Ok, so clouds of a few hundred nodes would work reasonably well and at
the same time keep customization to a minimum.

Yes

Quoted 7 lines

What makes OSPF a better candidate for interfacing between the clouds?
Does it keep a more limited routing table and thus minimize overhead
traffic? I haven't been able to figure it out good enough yet.

The idea would be that you do a layer 3 protocol only on a few selected
"gateway" nodes of the clouds. Those gateways would forward traffic from one
cloud to the other, without having the details (and thus not having the
overhead) of the state of the mesh.

Which technology is the best is beyond my knowledge.

Cheers,
      Simon

Quoted 2 lines · CEST fuumind

Ok, so clouds of a few hundred nodes would work reasonably well and at the same time keep customization to a minimum.

Yes

Quoted 3 lines

What makes OSPF a better candidate for interfacing between the clouds? Does it keep a more limited routing table and thus minimize overhead traffic? I haven't been able to figure it out good enough yet.

Which technology is the best is beyond my knowledge.