Problem COnnecting AP from Mobile Node

Brian Sturgill zen_hacker
Thu Sep 23 15:32:32 PDT 2004


Your problem is probably your bridge. When you bridge two interfaces, 
standard practice is as follows:
Your ethernet and wireless interface are bridged as br0 and the ip info is 
then set on the bridge interface.
In your case it would be something like: (if your 192 address is a class c 
subnet)

/sbin/brctl addbr br0
/sbin/brctl addif br0 eth0
/sbin/brctl addif br0 wlan0
/sbin/ifconfig eth0 0.0.0.0
/sbin/ifconfig wlan0 0.0.0.0
/sbin/ifconfig br0 192.168.2.3 broadcast 192.168.2.255 netmask 255.255.255.0 
up
/sbin/route add default gw 192.168.2.1

Another problem I see is you have your roaming client's ip on a different 
subnet than the access point (linux box). Your client doesn't know anything 
about the other subnets. Are you using NAT to get to the internet or is this 
just a private network? One easy thing to do is change the ip of the client 
to 192.168.2.5 and see if you can see the rest of your network. (Try to ping 
192.168.2.2 and then try 192.168.2.1)

Brian


>From: "Yong Chu Eu (??????)" <ceyong at yahoo.com>
>To: hostap at shmoo.com, bridge at osdl.org
>CC: jasonb at edseek.com, jt at hpl.hp.com, linux-help at houseofcraig.net
>Subject: Problem COnnecting AP from Mobile Node
>Date: Thu, 23 Sep 2004 05:55:05 -0700 (PDT)
>
>
>I am having problem in ping or connect AP from Mobile Node(essid & channel
>is the same,maybe routing did
>not set properly but i fail to configure with route add default gw
>192.168.3.4,its alway said
>network is unreachable ),My Mobile Node is using acx100 as driver while
>AP(redhat 9.0) is using
>HOSTAP 0.1.3.Any one can help? I heard How-To said we not need to set
>address on eth0 & wlan0 if
>we have bridge(with address)but will MN connect straight with bridge that
>i set?
>
>My mobile node setting:
>[root at localhost scripts]# iwconfig
>lo        no wireless extensions.
>
>sit0      no wireless extensions.
>
>eth0      no wireless extensions.
>
>ip6tnl0   no wireless extensions.
>
>mip6mnha  no wireless extensions.
>
>wlan0     IEEE 802.11b+  ESSID:"mipv6b"  Nickname:"acx100 v0.2.0pre8"
>           Mode:Managed  Channel:1  Access Point: 00:01:03:88:62:96
>           Bit Rate=11Mb/s   Tx-Power:18 dBm   Sensitivity=176/255
>           Retry min limit:7   RTS thr:off
>           Encryption key:off
>           Power Management:off
>           Link Quality:69/100  Signal level:57/100  Noise level:0/100
>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>           Tx excessive retries:0  Invalid misc:0   Missed beacon:0
>
>root at localhost scripts]# ifconfig
>eth0      Link encap:Ethernet  HWaddr 00:D0:59:80:0C:2E
>           inet addr:172.16.76.56  Bcast:172.16.76.255  Mask:255.255.255.0
>           inet6 addr: fe80::2d0:59ff:fe80:c2e/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:3832 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:252364 (246.4 Kb)  TX bytes:3140 (3.0 Kb)
>           Interrupt:11 Base address:0x1400 Memory:f4020000-f4020038
>
>lo        Link encap:Local Loopback
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:19 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:5256 (5.1 Kb)  TX bytes:5256 (5.1 Kb)
>
>mip6mnha1 Link encap:UNSPEC  HWaddr
>00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>           inet6 addr: 3ffe:80d0:ff03:4::1/64 Scope:Global
>           UP RUNNING NOARP  MTU:1460  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:8 dropped:8 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>
>wlan0     Link encap:Ethernet  HWaddr 00:0F:3D:46:A6:25
>           inet addr:192.168.4.1  Bcast:192.168.4.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:576  Metric:1
>           RX packets:6 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:1 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:1968 (1.9 Kb)  TX bytes:2052 (2.0 Kb)
>           Interrupt:11 Base address:0x4000
>
>
>
>My Redhat AP Setting
>
>[root at localhost root]# iwconfig
>lo        no wireless extensions.
>
>sit0      no wireless extensions.
>
>eth0      no wireless extensions.
>
>wlan0     IEEE 802.11b  ESSID:"mipv6b"  Nickname:"localhost.localdomain"
>           Mode:Master  Frequency:2.412GHz  Access Point: 00:01:03:88:62:96
>           Bit Rate=11Mb/s   Tx-Power:150 dBm   Sensitivity=1/3
>           Retry limit:8   RTS thr:off   Fragment thr:off
>           Encryption key:off
>           Power Management:off
>           Link Quality:0  Signal level:0  Noise level:0
>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>           Tx excessive retries:0  Invalid misc:46   Missed beacon:0
>
>br0       no wireless extensions.
>
>[root at localhost root]# ifconfig
>br0       Link encap:Ethernet  HWaddr 00:01:03:88:62:96
>           inet addr:192.168.3.3  Bcast:192.168.3.255  Mask:255.255.255.0
>           inet6 addr: fe80::201:3ff:fe88:6296/64 Scope:Link
>           inet6 addr: 3ffe:80d0:ff03:3::3/0 Scope:Global
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:1050 (1.0 Kb)
>
>eth0      Link encap:Ethernet  HWaddr 00:50:BA:5F:61:56
>           inet addr:192.168.3.2  Bcast:192.168.3.255  Mask:255.255.255.0
>           inet6 addr: 3ffe:80d0:ff03:3::2/64 Scope:Global
>           inet6 addr: fe80::250:baff:fe5f:6156/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:0 (0.0 b)  TX bytes:1458 (1.4 Kb)
>           Interrupt:9 Base address:0xd000
>
>lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:232 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:232 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:12792 (12.4 Kb)  TX bytes:12792 (12.4 Kb)
>
>wlan0     Link encap:Ethernet  HWaddr 00:01:03:88:62:96
>           inet addr:192.168.3.4  Bcast:192.168.3.255  Mask:255.255.255.0
>           inet6 addr: fe80::201:3ff:fe88:6296/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:0 (0.0 b)  TX bytes:1212 (1.1 Kb)
>           Interrupt:9 Base address:0xd400
>
>
>Wireless testBed is almost like below:
>
>
>                                          |
>                                      192.168.1.1
>                                  3ffe:80f0:ff03:1::1
>                                         fxp0
>                             FreeBSD 4.10 Router(Vls Server 0.5.6)
>                             vr0                   rl0
>                        192.168.2.1            192.168.3.1
>                      3ffe:80f0:ff03:2::1      3ffe:80f0:ff03:3::1
>                              |                     |
>                              |                     |
>                              |                     |
>                            eth0                  eth0
>                    3ffe:80f0:ff03:2::2      3ffe:80f0:ff03:3::2
>                        192.168.2.2            192.168.3.2
>                    Linux PC Access Point      Linux PC Access Point
>                       (HOSTAP 0.13)          (HOSTAP 0.13)
>                              |                     |
>                              |                     |
>                             br0                   br0
>                         192.168.2.3            192.168.3.3
>                    3ffe:80f0:ff03:2::3      3ffe:80f0:ff03:3::3
>                              |                     |
>
>                              |                     |
>                           wlan0                 wlan0
>                         192.168.2.4            192.168.3.4
>                        essid:mipv6a           essid:mipv6b
>
>
>                           ----
>                          | MN |
>                           ----
>                 Roaming notebook (VLC player 0.7.2)
>               Linux Kernel 2.4.22 with MIPL 1.0
>             (Dlink Wireless  Card with acx100 driver)
>            192.168.4.1(Home address 3ffe:80d0:ff03:4::1)
>
>
>
>=====
>???????????????????????? Happy & Healthy Always ! ^_^ !
>???????? Homepage:http://planet.time.net.my/sunwaycity/ceyong
>???????????? Buddhist Page: 
>http://planet.time.net.my/SunwayCity/ceyong/artikel.htm
>ICQ:16994867/ Yahoo Messenger ID:ceyong /MSN Messenger:ceyong at 
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>
>
>
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