Hello folks,

we spent some effort in measuring the stability on our freifunk-network. The networt itself consists of two networks. - Tinc-VPN, batman-adv 2011.2.0 - fastd-VPN, batman-adv 2012.4.0

The fastd-network has two gateways (kif and fastd3) and two nodes. Each node is connected to both gateways. (Example output of batctl o see below)

Please take a look at: http://kbu.freifunk.net/index.php?title=Statistik#Ping_innerhalb_des_Freifun... While the first chart shows the stability of a node connected directly via tincy, the later ones use fastd.

- Chart 2 shows kif -> node1 - Chart 3 shows fastd3 -> node1 - Chart 4 shows kif -> node2

We noticed a few, unusual things: -> regardless of the link tested (kif or fastd3) and regardless of the node (node1, node2) small interruptions (loss-peaks) are appearing. -> These peaks appear almost synchronous, a few "noise" comes from different vpn-links and node-wan-uplinks. -> Since all links are wired, radio-noise won't have an impact -> The losses appear in batman-adv 2011.2.0 as well as in batman-adv 2012.4.0. Thus I suspect that batman-adv is triggering theses interruptions.

Have you notice same problems in past? Is there a way to fix these outages?

Thanks, Keep smiling yanosz

# batctl o [B.A.T.M.A.N. adv 2012.4.0, MainIF/MAC: wlan0-1/b2:48:7a:cb:2d:59 (bat0)] Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ... vpn3 0.130s (255) vpn3 [ mesh-vpn]: kif (198) vpn3 (255) kif 0.280s (255) kif [ mesh-vpn]: vpn3 ( 0) kif (255) node1 2.700s (225) kif [ mesh-vpn]: kif (225) vpn3 (225) node2 3.110s (223) kif [ mesh-vpn]: kif (223) vpn3 (225)