* [B.A.T.M.A.N.] routing / direct connection
@ 2007-09-20 12:37 Freifunk Dresden
2007-09-21 18:38 ` Axel Neumann
0 siblings, 1 reply; 4+ messages in thread
From: Freifunk Dresden @ 2007-09-20 12:37 UTC (permalink / raw)
To: The list for a Better Approach To Mobile Ad-hoc Networking
Hello,
Im using the batmand- experimental and have some problems with routing.
First I like to know the meaning of all the fields of the debug level
prints and how they are determined.
It would be great If you can give a more detailed information when to
use the extended options and what they do
with batmand. For instance, why should I change the window size (seen in
Graz experiment).
My setup is the following. I have a laptop (linux debian) on a table.
under the table I have a WRT54GS about 50cm below.
A second router WRT54GL is places on the top of a cupboard which is
about 1m higher than the laptop and about 3 m
away. The laptop is offering a gatway.
Table
(wrt B 10.12.10.1)
(laptop 10.12.0.1)
###########
(wrt A 10.12.10.17) #
cupbord ###
laptop ------------ wrt A
| |
wrt B---------------+
My problem is that the connection from the laptop to B is bad (ssh,http
connection). batman setups the routes so each device
has a direct connection to the others.
OLSR has detected this and does not use the direct connection between
laptop and wrt B. It creates an routing entry to
route over wrt A in laptop and wrt B. This results in a fast and better
connection.
laptop wrt A
| |
wrt B---------------+
My problem also causes that the wrt B looses the gatway (laptop) and
removes the default routing entry.
I have added some traces of the three devices. All devices stay directly
connected to each other. After
network start wrt B still shows the gatway of the laptop (over the bad
connection).
Later the gateway will vanish and come back only for a short time before
vanishing again.
LAPTOP:
-----------
batmand -s 10.12.0.1 -g 1024/200 --no-unreachable-rule --no-throw-rules
--no-prio-rules wlan0 bbs /t 1 /i bbc /t 1 /i"
B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 0h 0m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.10.1 wlan0 10.12.10.1 ( 46 47 217 0) [
wlan0 40 48 106] 10.12.10.17 ( 1)
10.12.10.17 wlan0 10.12.10.17 ( 47 48 239 0) [
wlan0 44 49 114] 10.12.10.1 ( 1)
WRT A
---------
batmand --no-unreachable-rule --no-throw-rules --no-prio-rules -r 1 eth1
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
2, OGI: 1000, UT: 0d 0h 3m Originator viaIF Router
(brc rcvd lseq lvld) [ viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 ( 7 7 7 0) [
eth1 119 7 128] 10.12.10.1 ( 0)
10.12.10.1 eth1 10.12.10.1 (125 126 176 0) [
eth1 115 126 116] 10.12.0.1 ( 1)
Gateway Router (#/128)
=> 10.12.0.1 10.12.0.1 (110), gw_class 33 -
1024KBit/256KBit, reliability: 1
WRT B
---------
batmand --no-unreachable-rule --no-throw-rules --no-prio-rules -r 1 eth1
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 0h 3m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 ( 23 23 23 0) [
eth1 119 22 128] 10.12.10.17 ( 0)
10.12.10.17 eth1 10.12.10.17 (113 124 213 1) [
eth1 120 113 128] 10.12.0.1 ( 11)
Gateway Router (#/128)
=> 10.12.0.1 10.12.0.1 ( 82), gw_class 33 -
1024KBit/256KBit, reliability: 1
##################
after a while...
LAPTOP:
------------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 0h55m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.10.1 wlan0 10.12.10.1 (127 127 3503 0) [
wlan0 107 127 107] 10.12.10.17 ( 0)
10.12.10.17 wlan0 10.12.10.17 (128 128 3532 0) [
wlan0 124 128 124] 10.12.10.1 ( 0)
WRT A
---------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
2, OGI: 1000, UT: 0d 0h58m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 (125 126 3301 0) [
eth1 123 125 125] 10.12.10.1 ( 1)
10.12.10.1 eth1 10.12.10.1 (126 128 3470 1) [
eth1 111 128 111] 10.12.0.1 ( 2)
Gateway Router (#/128)
=> 10.12.0.1 10.12.0.1 (125), gw_class 33 -
1024KBit/256KBit, reliability: 1
WRT B
---------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 0h57m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 (108 118 3264 0) [
eth1 123 108 128] 10.12.10.17 ( 10)
10.12.10.17 eth1 10.12.10.17 (114 121 3461 0) [
eth1 123 114 128] 10.12.0.1 ( 7)
Gateway Router (#/128)
10.12.0.1 10.12.0.1 (109), gw_class 33 -
1024KBit/256KBit, reliability: 6
##################################################################################
still a little later
LAPTOP:
----------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 1h11m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.10.1 wlan0 10.12.10.1 (124 128 4411 0) [
wlan0 107 128 107] 10.12.10.17 ( 4)
10.12.10.17 wlan0 10.12.10.17 (127 127 4441 0) [
wlan0 121 128 121] 10.12.10.1 ( 0)
WRT A
---------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
2, OGI: 1000, UT: 0d 1h15m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 (123 125 4308 0) [
eth1 121 123 125] 10.12.10.1 ( 2)
10.12.10.1 eth1 10.12.10.1 (126 128 4477 0) [
eth1 111 128 111] 10.12.0.1 ( 2)
Gateway Router (#/128)
=> 10.12.0.1 10.12.0.1 (123), gw_class 33 -
1024KBit/256KBit, reliability: 1
WRT B
---------
B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
OGI: 1000, UT: 0d 1h14m
Originator viaIF Router (brc rcvd lseq lvld) [
viaIF l2q lq nlq].. alternatives...
10.12.0.1 eth1 10.12.0.1 (106 115 4277 0) [
eth1 123 106 128] 10.12.10.17 ( 9)
10.12.10.17 eth1 10.12.10.17 (117 122 4476 0) [
eth1 120 117 128] 10.12.0.1 ( 5)
Gateway Router (#/128)
10.12.0.1 10.12.0.1 (110), gw_class 33 -
1024KBit/256KBit, reliability: 8
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [B.A.T.M.A.N.] routing / direct connection
2007-09-20 12:37 [B.A.T.M.A.N.] routing / direct connection Freifunk Dresden
@ 2007-09-21 18:38 ` Axel Neumann
2007-09-25 8:06 ` Freifunk Dresden
0 siblings, 1 reply; 4+ messages in thread
From: Axel Neumann @ 2007-09-21 18:38 UTC (permalink / raw)
To: The list for a Better Approach To Mobile Ad-hoc Networking
Hey,
I am working on the documentation of experimental and on the experiences I
made at the wcw in graz. sorry I just came back from there and need to keep up
with some postponed work first.
YOu can have a look on the preliminary documentation
https://www.open-mesh.net/batman/doc/BMX#debug-level-1-parameter
to get an idea about the acronyms used in debug-level 1.
Please tell me if there is something you dont understand, so I can correct it
before I make this url public.
On Donnerstag 20 September 2007, Freifunk Dresden wrote:
> Hello,
>
> Im using the batmand- experimental and have some problems with routing.
> First I like to know the meaning of all the fields of the debug level
> prints and how they are determined.
> It would be great If you can give a more detailed information when to
> use the extended options and what they do
> with batmand. For instance, why should I change the window size (seen in
> Graz experiment).
The window size defines the frame size or the number of recent OGMs over which
statistics are made for the neighbor ranking.
So a smaller window-size results in a shorter time for the mesh to converge
and find new routes if something has changed. However it will also cause more
unnesssary route changes.
I know I am also late with that documentatioin, be patient...
ciau,
axel
>
> My setup is the following. I have a laptop (linux debian) on a table.
> under the table I have a WRT54GS about 50cm below.
> A second router WRT54GL is places on the top of a cupboard which is
> about 1m higher than the laptop and about 3 m
> away. The laptop is offering a gatway.
>
> Table
> (wrt B 10.12.10.1)
> (laptop 10.12.0.1)
> ###########
> (wrt A 10.12.10.17) #
> cupbord ###
>
> laptop ------------ wrt A
>
> wrt B---------------+
>
> My problem is that the connection from the laptop to B is bad (ssh,http
> connection). batman setups the routes so each device
> has a direct connection to the others.
> OLSR has detected this and does not use the direct connection between
> laptop and wrt B. It creates an routing entry to
> route over wrt A in laptop and wrt B. This results in a fast and better
> connection.
>
> laptop wrt A
>
> wrt B---------------+
>
> My problem also causes that the wrt B looses the gatway (laptop) and
> removes the default routing entry.
> I have added some traces of the three devices. All devices stay directly
> connected to each other. After
> network start wrt B still shows the gatway of the laptop (over the bad
> connection).
> Later the gateway will vanish and come back only for a short time before
> vanishing again.
>
> LAPTOP:
> -----------
> batmand -s 10.12.0.1 -g 1024/200 --no-unreachable-rule --no-throw-rules
> --no-prio-rules wlan0 bbs /t 1 /i bbc /t 1 /i"
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 0h 0m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.10.1 wlan0 10.12.10.1 ( 46 47 217 0) [
> wlan0 40 48 106] 10.12.10.17 ( 1)
> 10.12.10.17 wlan0 10.12.10.17 ( 47 48 239 0) [
> wlan0 44 49 114] 10.12.10.1 ( 1)
>
> WRT A
> ---------
> batmand --no-unreachable-rule --no-throw-rules --no-prio-rules -r 1 eth1
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
> 2, OGI: 1000, UT: 0d 0h 3m Originator viaIF Router
> (brc rcvd lseq lvld) [ viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 ( 7 7 7 0) [
> eth1 119 7 128] 10.12.10.1 ( 0)
> 10.12.10.1 eth1 10.12.10.1 (125 126 176 0) [
> eth1 115 126 116] 10.12.0.1 ( 1)
> Gateway Router (#/128)
> => 10.12.0.1 10.12.0.1 (110), gw_class 33 -
> 1024KBit/256KBit, reliability: 1
>
> WRT B
> ---------
> batmand --no-unreachable-rule --no-throw-rules --no-prio-rules -r 1 eth1
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 0h 3m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 ( 23 23 23 0) [
> eth1 119 22 128] 10.12.10.17 ( 0)
> 10.12.10.17 eth1 10.12.10.17 (113 124 213 1) [
> eth1 120 113 128] 10.12.0.1 ( 11)
> Gateway Router (#/128)
> => 10.12.0.1 10.12.0.1 ( 82), gw_class 33 -
> 1024KBit/256KBit, reliability: 1
>
> ##################
> after a while...
> LAPTOP:
> ------------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 0h55m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.10.1 wlan0 10.12.10.1 (127 127 3503 0) [
> wlan0 107 127 107] 10.12.10.17 ( 0)
> 10.12.10.17 wlan0 10.12.10.17 (128 128 3532 0) [
> wlan0 124 128 124] 10.12.10.1 ( 0)
>
> WRT A
> ---------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
> 2, OGI: 1000, UT: 0d 0h58m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 (125 126 3301 0) [
> eth1 123 125 125] 10.12.10.1 ( 1)
> 10.12.10.1 eth1 10.12.10.1 (126 128 3470 1) [
> eth1 111 128 111] 10.12.0.1 ( 2)
>
> Gateway Router (#/128)
> => 10.12.0.1 10.12.0.1 (125), gw_class 33 -
> 1024KBit/256KBit, reliability: 1
>
> WRT B
> ---------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 0h57m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 (108 118 3264 0) [
> eth1 123 108 128] 10.12.10.17 ( 10)
> 10.12.10.17 eth1 10.12.10.17 (114 121 3461 0) [
> eth1 123 114 128] 10.12.0.1 ( 7)
>
> Gateway Router (#/128)
> 10.12.0.1 10.12.0.1 (109), gw_class 33 -
> 1024KBit/256KBit, reliability: 6
>
> ###########################################################################
>####### still a little later
> LAPTOP:
> ----------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: wlan0 10.12.0.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 1h11m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.10.1 wlan0 10.12.10.1 (124 128 4411 0) [
> wlan0 107 128 107] 10.12.10.17 ( 4)
> 10.12.10.17 wlan0 10.12.10.17 (127 127 4441 0) [
> wlan0 121 128 121] 10.12.10.1 ( 0)
>
> WRT A
> ---------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.17, WindSize: 128, BLT:
> 2, OGI: 1000, UT: 0d 1h15m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 (123 125 4308 0) [
> eth1 121 123 125] 10.12.10.1 ( 2)
> 10.12.10.1 eth1 10.12.10.1 (126 128 4477 0) [
> eth1 111 128 111] 10.12.0.1 ( 2)
>
> Gateway Router (#/128)
> => 10.12.0.1 10.12.0.1 (123), gw_class 33 -
> 1024KBit/256KBit, reliability: 1
>
> WRT B
> ---------
> B.A.T.M.A.N. 0.3-exp, MainIF/IP: eth1 10.12.10.1, WindSize: 128, BLT: 2,
> OGI: 1000, UT: 0d 1h14m
> Originator viaIF Router (brc rcvd lseq lvld) [
> viaIF l2q lq nlq].. alternatives...
> 10.12.0.1 eth1 10.12.0.1 (106 115 4277 0) [
> eth1 123 106 128] 10.12.10.17 ( 9)
> 10.12.10.17 eth1 10.12.10.17 (117 122 4476 0) [
> eth1 120 117 128] 10.12.0.1 ( 5)
>
> Gateway Router (#/128)
> 10.12.0.1 10.12.0.1 (110), gw_class 33 -
> 1024KBit/256KBit, reliability: 8
>
>
>
>
>
>
>
>
> _______________________________________________
> B.A.T.M.A.N mailing list
> B.A.T.M.A.N@open-mesh.net
> https://list.open-mesh.net/mm/listinfo/b.a.t.m.a.n
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [B.A.T.M.A.N.] routing / direct connection
2007-09-21 18:38 ` Axel Neumann
@ 2007-09-25 8:06 ` Freifunk Dresden
2007-09-25 11:26 ` Axel Neumann
0 siblings, 1 reply; 4+ messages in thread
From: Freifunk Dresden @ 2007-09-25 8:06 UTC (permalink / raw)
To: The list for a Better Approach To Mobile Ad-hoc Networking
Hi,
I shortly checked your writing and found some unclear points.
- What is the difference (-d 1 ) of the viaIF and the viaIF of
the optional info block?
- the nlq = l2q / l2: what is l2?
- you compare the lq with the OLSR-ETX. But can you explain it
without "OLSR-ETX", because I don't like to check the documentation
of OLSR
-bidirectional timeout: is the number given in seconds or sequence count difference
or something other?
If haven't already planed, the options --dups-xxx --asymmetric-xxx and all
that only have the blue bar needs more description and what influence they have
within the batmand. Examples as you have offered by --window-size are very
helpful.
Regards
Stephan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [B.A.T.M.A.N.] routing / direct connection
2007-09-25 8:06 ` Freifunk Dresden
@ 2007-09-25 11:26 ` Axel Neumann
0 siblings, 0 replies; 4+ messages in thread
From: Axel Neumann @ 2007-09-25 11:26 UTC (permalink / raw)
To: The list for a Better Approach To Mobile Ad-hoc Networking
Hi,
first thanks for your input,
> I shortly checked your writing and found some unclear points.
> - What is the difference (-d 1 ) of the viaIF and the viaIF of
> the optional info block?
I've tried to make this more concrete.
http://open-mesh.net/batman/doc/BMX#debug-level-1-parameter
critic is still welcome.
>
> - the nlq = l2q / l2: what is l2?
Yes, that was a flaw, I meant lq NOT l2. Anyway I renamed the terms a little
bit so that it now reads:
NLQ = RTQ / LQ
where RTQ should be referred as Round Trip Quality
> - you compare the lq with the OLSR-ETX. But can you explain it
> without "OLSR-ETX", because I don't like to check the documentation
> of OLSR
done
> -bidirectional timeout: is the number given in seconds or sequence count
> difference or something other?
in sequence number counts. I'll see to make this clearer as well.
>
> If haven't already planed, the options --dups-xxx --asymmetric-xxx and all
> that only have the blue bar needs more description and what influence they
> have within the batmand. Examples as you have offered by --window-size are
> very helpful.
on its way...
ciao,
axel
^ permalink raw reply [flat|nested] 4+ messages in thread
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2007-09-20 12:37 [B.A.T.M.A.N.] routing / direct connection Freifunk Dresden
2007-09-21 18:38 ` Axel Neumann
2007-09-25 8:06 ` Freifunk Dresden
2007-09-25 11:26 ` Axel Neumann
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