[Olsr-users] Scability testing issue (happening a link brokerage)
mason
(spam-protected)
Tue Sep 27 04:30:17 CEST 2011
Hi,
I have 10 systems running olsrd (0.6.1). To test scalability, I set up a
simple network topology.
To minimize radio interference and maximize the results, I assigned
different channels to each wireless link. Because the node is running with
AC power, I also set Willingness to 6 not 3. I found some routing brokerage
betweeen nodes. For this report, the brokerage happened between node 5 andf
node 6.
Internet --- Node1 ---- Node2 ---- Node3 ----- Node 4 ----- Node 5 -----Node
6 ----Node 7-----Node 8-----Node9----Node10
(ch) 161 161 149 149 153 153 157 157 165
165 1 1 11 11 6 6 9 9
I also assigned the following simple woing schemes to each node.
Node1: wlan0 10.10.10.10
lan 192.168.10.1
wan 172.31.1.88
Node 2: wlan0 10.10.10.20
wlan1 10.10.10.21
lan 192.168.20.1
Node 3: wlan0 10.10.10.30
wlan1 10.10.10.31
lan 192.168.30.1
.....
Node 9: wlan0 10.10.10.90
wlan1 10.10.10.91
lan 192.168.90.1
Node 10: wlan0 10.10.10.100
lan 192.168.100.1
For this case, node1-to-node5 seems to be well but the rest of the nodes are
separated as I can show the following observations.
Link between node 5 and node 6 seems to be broken. When I rebooted all of
the nodes, then link brokerage is happening at one of the nodes such as 2 or
4. When I planned to test this configuration, I thought all of the nodes
have to be linked although the nodes have different hop metric.
In addtion, is there any olsr related performance results that I tried
to test my case?
Why doe the routing metric only show 2 or 0? Any helps and commests will be
very appreciated...
Node 1: routing table
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 172.31.1.1 0.0.0.0 UG 0 0 0 eth1
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan0
10.10.10.20 * 255.255.255.255 UH 2 0 0
wlan0
10.10.10.21 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.30 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.31 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.40 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.41 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.50 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.51 10.10.10.20 255.255.255.255 UGH 2 0 0
wlan0
172.31.1.0 * 255.255.255.0 U 0 0 0 eth1
192.168.20.0 10.10.10.20 255.255.255.0 UG 2 0 0
wlan0
192.168.30.0 10.10.10.20 255.255.255.0 UG 2 0 0
wlan0
192.168.40.0 10.10.10.20 255.255.255.0 UG 2 0 0
wlan0
192.168.50.0 10.10.10.20 255.255.255.0 UG 2 0 0
wlan0
Node 2: routing table
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 10.10.10.10 0.0.0.0 UG 2 0 0
wlan0
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan0
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan1
10.10.10.10 * 255.255.255.255 UH 2 0 0
wlan0
10.10.10.30 * 255.255.255.255 UH 2 0 0
wlan1
10.10.10.31 10.10.10.30 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.40 10.10.10.30 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.41 10.10.10.30 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.50 10.10.10.30 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.51 10.10.10.30 255.255.255.255 UGH 2 0 0
wlan1
192.168.10.0 10.10.10.10 255.255.255.0 UG 2 0 0
wlan0
192.168.20.0 * 255.255.255.0 U 0 0 0
br-lan
192.168.30.0 10.10.10.30 255.255.255.0 UG 2 0 0
wlan1
192.168.40.0 10.10.10.30 255.255.255.0 UG 2 0 0
wlan1
192.168.50.0 10.10.10.30 255.255.255.0 UG 2 0 0
wlan1
Node 5: routing table
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 10.10.10.41 0.0.0.0 UG 2 0 0
wlan0
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan0
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan1
10.10.10.10 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.20 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.21 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.30 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.31 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.40 10.10.10.41 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.41 * 255.255.255.255 UH 2 0 0
wlan0
192.168.10.0 10.10.10.41 255.255.255.0 UG 2 0 0
wlan0
192.168.20.0 10.10.10.41 255.255.255.0 UG 2 0 0
wlan0
192.168.30.0 10.10.10.41 255.255.255.0 UG 2 0 0
wlan0
192.168.40.0 10.10.10.41 255.255.255.0 UG 2 0 0
wlan0
192.168.50.0 * 255.255.255.0 U 0 0 0
br-lan
Node 6: routing table
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan0
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan1
10.10.10.70 * 255.255.255.255 UH 2 0 0
wlan1
10.10.10.71 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.80 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.81 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.90 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.91 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
10.10.10.100 10.10.10.70 255.255.255.255 UGH 2 0 0
wlan1
192.168.60.0 * 255.255.255.0 U 0 0 0
br-lan
192.168.70.0 10.10.10.70 255.255.255.0 UG 2 0 0
wlan1
192.168.80.0 10.10.10.70 255.255.255.0 UG 2 0 0
wlan1
192.168.90.0 10.10.10.70 255.255.255.0 UG 2 0 0
wlan1
192.168.100.0 10.10.10.70 255.255.255.0 UG 2 0 0
wlan1
Node 10: routing table
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
10.10.10.0 * 255.255.255.0 U 0 0 0
wlan0
10.10.10.60 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.70 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.71 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.80 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.81 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.90 10.10.10.91 255.255.255.255 UGH 2 0 0
wlan0
10.10.10.91 * 255.255.255.255 UH 2 0 0
wlan0
192.168.60.0 10.10.10.91 255.255.255.0 UG 2 0 0
wlan0
192.168.70.0 10.10.10.91 255.255.255.0 UG 2 0 0
wlan0
192.168.80.0 10.10.10.91 255.255.255.0 UG 2 0 0
wlan0
192.168.90.0 10.10.10.91 255.255.255.0 UG 2 0 0
wlan0
192.168.100.0 * 255.255.255.0 U 0 0 0
br-lan
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