[Olsr-users] ETX-LQ calculations questions
Alexey Shinkin
(spam-protected)
Mon Aug 13 04:42:57 CEST 2007
Thank for reply .
Could anyone please explain the following .
I have a test configurations with two Linksys WRT54GL routers running Freifunk firmware with olsrd 0.4.10 . Office conditions, radio link is perfect.
Routers have the following olsr.conf :
DebugLevel 0
IpVersion 4
AllowNoInt yes
Pollrate 0.3
TcRedundancy 2
MprCoverage 7
LinkQualityFishEye 1
LinkQualityWinSize 10
LinkQualityDijkstraLimit 0 1.0
LoadPlugin "olsrd_txtinfo.so.0.1"
{
PlParam "Accept" "127.0.0.1"
}
IpcConnect
{
MaxConnections 1
Host 127.0.0.1
Net 192.168.2.0 255.255.255.0
}
LinkQualityLevel 2
UseHysteresis no
Interface "eth1"
{
HelloInterval 0.5
HelloValidityTime 10.0
TcInterval 1.0
TcValidityTime 5.0
MidInterval 3.0
MidValidityTime 15.0
HnaInterval 10.0
HnaValidityTime 50.0
}
One of the routers has additional HNA section .
And I got a strange ETX values on both routers.
On the first ( 192.168.10.10):
Table: Links
Local IP remote IP Hysteresis LinkQuality lost total NLQ ETX
192.168.10.10 192.168.10.5 0.00 1.25 0 10 0.24 3.29
Table: Neighbors
IP address SYM MPR MPRS Willingness 2 Hop Neighbors
192.168.10.5 YES NO NO 3 0
Table: Topology
Destination IP Last hop IP LQ ILQ ETX
192.168.10.10 192.168.10.5 0.24 0.24 16.92
Table: HNA
Network Netmask Gateway
192.168.2.0 255.255.255.0 192.168.10.10
Table: Routes
Destination Gateway Metric ETX Interface Type
192.168.10.5 192.168.10.5 1 3.29 eth1 HOST
On the second ( 192.168.10.5):
Table: Links
Local IP remote IP Hysteresis LinkQuality lost total NLQ ETX
192.168.10.5 192.168.10.10 0.00 1.13 1 10 0.24 3.66
Table: Neighbors
IP address SYM MPR MPRS Willingness 2 Hop Neighbors
192.168.10.10 YES NO NO 3 0
Table: Topology
Destination IP Last hop IP LQ ILQ ETX
192.168.10.5 192.168.10.10 0.12 0.24 34.96
Table: HNA
Network Netmask Gateway
192.168.2.0 255.255.255.0 192.168.10.10
Table: Routes
Destination Gateway Metric ETX Interface Type
192.168.10.10 192.168.10.10 1 3.66 eth1 HOST
192.168.2.0 192.168.10.10 1 eth1 HNA
So, I am a bit surprised with so low LQ and NLQ values in Topology section and
why LQ in Links table is >1 and not equal to LQ in Topology ?
Thanks.
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