I cannot get multicast to work on the mesh network.
I have setup two mesh points on boards 1 and 2 (both OMAP3EVM boards):
On each board I set up the multicast route
# ip route add 224.0.0.0/4 dev mesh0
# echo 1 > /proc/sys/net/ipv4/ip_forward
And then ping the multicat address:
# ping -c 5 224.0.0.1
PING 224.0.0.1 (224.0.0.1): 56 data bytes
--- 224.0.0.1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
This works when I do it on the ethernet interface, but not on the mesh. Any
ideas what I am doing wrong?
Here is my configuration:
On board 1:
# uname -a
Linux Denon-Mediabridge 3.2.0-rc5 #3 SMP Mon Dec 19 11:44:52 EST 2011 armv7l
GNU/Linux
# ifconfig mesh0
mesh0 Link encap:Ethernet HWaddr F4:EC:38:85:14:EA
inet addr:169.254.1.3 Bcast:169.254.255.255 Mask:255.255.0.0
inet6 addr: fe80::f6ec:38ff:fe85:14ea/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:54 errors:0 dropped:0 overruns:0 frame:0
TX packets:113 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7308 (7.1 KiB) TX bytes:19477 (19.0 KiB)
# iw mesh0 mpath dump
DEST ADDR NEXT HOP IFACE SN METRIC QLEN EXPTIME
DTIM DRET FLAGS
f4:ec:38:85:bc:2d f4:ec:38:85:bc:2d mesh0 5 4294967295 0
0 101 0 0x14
# iw mesh0 station dump
Station f4:ec:38:85:bc:2d (on mesh0)
inactive time: 859 ms
rx bytes: 74518
rx packets: 1126
tx bytes: 1895
tx packets: 20
tx retries: 0
tx failed: 0
signal: -58 dBm
signal avg: -59 dBm
tx bitrate: 15.0 MBit/s MCS 0 40Mhz short GI
mesh llid: 55356
mesh plid: 30792
mesh plink: ESTAB
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
# iw mesh0 get mesh_param
mesh_retry_timeout = 100 milliseconds
mesh_confirm_timeout = 100 milliseconds
mesh_holding_timeout = 100 milliseconds
mesh_max_peer_links = 32
mesh_max_retries = 3
mesh_ttl = 31
mesh_element_ttl = 31
mesh_auto_open_plinks = 1
mesh_hwmp_max_preq_retries = 4
mesh_path_refresh_time = 1000 milliseconds
mesh_min_discovery_timeout = 100 milliseconds
mesh_hwmp_active_path_timeout = 5000 TUs
mesh_hwmp_preq_min_interval = 10 TUs
mesh_hwmp_net_diameter_traversal_time = 50 TUs
mesh_hwmp_rootmode = 0
mesh_hwmp_rann_interval = 5000
mesh_gate_announcements = 0
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.110.20.1 0.0.0.0 UG 0 0 0 eth0
10.110.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 mesh0
224.0.0.0 0.0.0.0 240.0.0.0 U 0 0 0 mesh0
On board 2:
# uname -a
Linux Denon-Mediabridge 3.2.0-rc5 #3 SMP Mon Dec 19 11:44:52 EST 2011 armv7l
GNU/Linux
# ifconfig mesh0
mesh0 Link encap:Ethernet HWaddr F4:EC:38:85:BC:2D
inet addr:169.254.1.2 Bcast:169.254.255.255 Mask:255.255.0.0
inet6 addr: fe80::f6ec:38ff:fe85:bc2d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:108 errors:0 dropped:0 overruns:0 frame:0
TX packets:90 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14389 (14.0 KiB) TX bytes:18414 (17.9 KiB)
# iw mesh0 mpath dump
DEST ADDR NEXT HOP IFACE SN METRIC QLEN EXPTIME
DTIM DRET FLAGS
f4:ec:38:85:14:ea f4:ec:38:85:14:ea mesh0 5 4294967295 0
0 101 0 0x4
# iw mesh0 station dump
Station f4:ec:38:85:14:ea (on mesh0)
inactive time: 757 ms
rx bytes: 101728
rx packets: 1490
tx bytes: 1833
tx packets: 17
tx retries: 0
tx failed: 0
signal: -61 dBm
signal avg: -60 dBm
tx bitrate: 135.0 MBit/s MCS 6 40Mhz short GI
mesh llid: 30792
mesh plid: 55356
mesh plink: ESTAB
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
# iw mesh0 get mesh_param
mesh_retry_timeout = 100 milliseconds
mesh_confirm_timeout = 100 milliseconds
mesh_holding_timeout = 100 milliseconds
mesh_max_peer_links = 32
mesh_max_retries = 3
mesh_ttl = 31
mesh_element_ttl = 31
mesh_auto_open_plinks = 1
mesh_hwmp_max_preq_retries = 4
mesh_path_refresh_time = 1000 milliseconds
mesh_min_discovery_timeout = 100 milliseconds
mesh_hwmp_active_path_timeout = 5000 TUs
mesh_hwmp_preq_min_interval = 10 TUs
mesh_hwmp_net_diameter_traversal_time = 50 TUs
mesh_hwmp_rootmode = 0
mesh_hwmp_rann_interval = 5000
mesh_gate_announcements = 0
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.110.20.1 0.0.0.0 UG 0 0 0 eth0
10.110.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 mesh0
224.0.0.0 0.0.0.0 240.0.0.0 U 0 0 0 mesh0
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