Hello.
On 11/05/16 11:46, Alexander Aring wrote:
Signed-off-by: Alexander Aring <aar@xxxxxxxxxxxxxx>
---
website/index.txt | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
diff --git a/website/index.txt b/website/index.txt
index 65c6b9c..fde4d7d 100644
--- a/website/index.txt
+++ b/website/index.txt
@@ -90,8 +90,13 @@ Setup a 6LowPAN test network
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Let's assume you want to setup a 6lowpan test network of six nodes.
+Each of them will be created in their own net namespace to avoid
+local IPv6 optimizations. Each netns is named according to the wpan
+interface which available in the net namespace.
---------------------------------------------------------------------
+#!/bin/sh
+
# we need some Private Area Network ID
panid="0xbeef"
# number of nodes
@@ -102,25 +107,26 @@ numnodes=6
modprobe fakelb numlbs=$numnodes
# initialize all the nodes
-for i in $(seq 0 $numnodes);
+for i in $(seq 0 `expr $numnodes - 1`);
do
- iwpan dev wpan${i} set pan_id 0xbeef
- ip link wpan${i} name lowpan${i} type lowpan
- ip link set wpan${i} up
- ip link set lowpan${i} up
+ ip netns delete wpan${i}
+ ip netns add wpan${i}
+ PHYNUM=`iwpan dev | grep -B 1 wpan${i} | sed -ne '1 s/phy#\([0-9]\)/\1/p'`
+ iwpan phy${PHYNUM} set netns name wpan${i}
+
+ ip netns exec wpan${i} iwpan dev wpan${i} set pan_id 0xbeef
+ ip netns exec wpan${i} ip link add link wpan${i} name lowpan${i} type lowpan
+ ip netns exec wpan${i} ip link set wpan${i} up
+ ip netns exec wpan${i} ip link set lowpan${i} up
done
---------------------------------------------------------------------
Now let us send some data over our network:
---------------------------------------------------------------------
-wireshark -kSl -i lowpan0 &
-# get the IPv6 address of lowpan1
-lowpan1addr="$(ip addr show lowpan1 | grep inet6 \
- | sed 's,.*inet6 \([^/]*\).*,\1,')"
-# tell ping6 to ping the IPv6 address of lowpan1 and send it via
-# lowpan0
-ping6 ${lowpan1addr}%lowpan0
+ip netns exec wpan0 wireshark -kSl -i lowpan0 &
+# ping all nodes
+ip netns exec wpan0 ping6 ff02::1%lowpan0
---------------------------------------------------------------------
Now watch wireshark and all the nice ICMP packets there.
Reviewed-by: Stefan Schmidt<stefan@xxxxxxxxxxxxxxx>
regards
Stefan Schmidt
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