Hello bridge users,
please be patient, long message, sorry.
Wednesday, April 2, 2003, 9:07:52 PM, you wrote:
>> I`ve built a bridge on Debian with kernel 24.18 (then on 2.4.19) +
>> appropriate patch (exactly like in mini-HOWTO with and without
>> firewalling). I have every time enormous pacekt loss (80 to 90%).
>> I`ve looked at the list archive and think that`s a problem with my
>> NIC`s, because i use rtl8139. Is there any possibility to make
>> them work corectly??? Or maybe there`s another problem??
>> Please help me.
BDS> I use rtl8139 too and have no problem. Did you use tcpdump (or the like) to
BDS> find out what is going on?
1)
I`ve used tcpdump, to check the traffic on my bridge interfaces.
It look`s like this (where my_workstation_ip and
local_network_computer_ip are in the same class C network,):
[eth2]
12:31:36.934990 truncated-ip - 128 bytes missing!my_workstation_ip >
local_network_computer_ip : icmp: echo request
12:31:37.936296 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:37.936484 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:38.937593 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:38.937786 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:39.938911 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:39.939093 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:40.940178 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:40.940367 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:42.942785 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:43.944082 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:43.944270 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:44.944988 truncated-ip - 128 bytes missing! my_workstation_ip >
local_network_computer_ip : icmp: echo request
12:31:45.946732 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:45.946940 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:46.947974 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:46.948156 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:47.949286 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:47.949482 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:48.950209 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:48.950398 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:50.953219 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:51.954507 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:51.954702 local_network_computer_ip > my_workstation_ip : icmp: echo reply
[eth1]
12:31:38.937557 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:38.937825 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:39.938875 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:39.939130 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:40.940139 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:40.940403 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:42.942751 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:43.944049 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:43.944303 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:44.944955 truncated-ip - 128 bytes missing! my_workstation_ip >
local_network_computer_ip : icmp: echo request
12:31:45.946698 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:45.946979 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:46.947940 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:46.948189 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:47.949253 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:47.949517 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:48.950174 my_workstation_ip > local_network_computer_ip : icmp: echo request
12:31:48.950433 local_network_computer_ip > my_workstation_ip : icmp: echo reply
12:31:50.953183 my_workstation_ip > local_network_computer_ip : icmp: echo reques
What i see, there are more echo request than replay, but the traffic
on both NIC looks the same. And another
thing: truncated-ip - i`ve read something about it on google, but i`m
still not sure what does it realy mean??
2)
My bridge configuration look`s like this (mojmost means mybridge in
polish):
brctl show
bridge name bridge id STP enabled interfaces
mojmost 8000.000244269151 yes eth1
eth2
brctl showstp mojmost
mojmost
bridge id 8000.000244269151
designated root 8000.00019665179f
root port 2 path cost 127
max age 20.00 bridge max age 4.00
hello time 2.00 bridge hello time 1.00
forward delay 15.00 bridge forward delay 4.00
ageing time 300.00 gc interval 4.00
hello timer 0.00 tcn timer 0.00
topology change timer 0.00 gc timer 1.30
flags TOPOLOGY_CHANGE
eth1 (1)
port id 8001 state forwarding
designated root 8000.00019665179f path cost 100
designated bridge 8000.000244269151 message age timer 0.00
designated port 8001 forward delay timer 0.00
designated cost 127 hold timer 0.00
flags
eth2 (2)
port id 8002 state forwarding
designated root 8000.00019665179f path cost 100
designated bridge 8000.00051a0504e0 message age timer 4.79
designated port 8009 forward delay timer 0.00
designated cost 27 hold timer 0.00
flags
Is there any error?? I don`t see any....
3) But i offen gets on local bridge console message like this:
mojmost: topology change detected , propagating
mojmost: retransmitting tcn bpdu
mojmost: neighbour 8000.00:05:1a:05:04:e0 lost on port 2(eth2)
mojmost: retransmitting tcn bpdu
mojmost: retransmitting tcn bpdu
mojmost: retransmitting tcn bpdu
4) and my my interface configuration:
eth0 Link encap:Ethernet HWaddr 00:C0:DF:E1:CB:FC
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:631 errors:0 dropped:0 overruns:0 frame:0
TX packets:636 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:61170 (59.7 KiB) TX bytes:61324 (59.8 KiB)
Interrupt:10 Base address:0xff80
eth1 Link encap:Ethernet HWaddr 00:50:FC:34:2A:E1
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:2033 errors:1 dropped:0 overruns:0 frame:0
TX packets:78706 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:165942 (162.0 KiB) TX bytes:7377108 (7.0 MiB)
Interrupt:9 Base address:0xfc00
eth2 Link encap:Ethernet HWaddr 00:02:44:26:91:51
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:78990 errors:0 dropped:0 overruns:0 frame:0
TX packets:2298 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:7401155 (7.0 MiB) TX bytes:181842 (177.5 KiB)
Interrupt:3 Base address:0xf800
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:32 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2264 (2.2 KiB) TX bytes:2264 (2.2 KiB)
mojmost Link encap:Ethernet HWaddr 00:02:44:26:91:51
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:80160 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6386070 (6.0 MiB) TX bytes:0 (0.0 b)
Where:
eth0: is for secure login into bridge machine from my
workstation thru patch-cable
eth1: bridge iface1 is connected to my workstation thru patch-cable
eth2: bridge iface2 is connected to local network thru cheap fast ethernet switch
Without my bridge everything works fine withoout any packet loss.
Anyone can help me please??!
--
Best regards,
Krzysztof mailto:[EMAIL PROTECTED]
PS.
Once again, sorry for so long message.
_______________________________________________
Bridge mailing list
[EMAIL PROTECTED]
http://www.math.leidenuniv.nl/mailman/listinfo/bridge
