Date: Wed, 6 Sep 2000 14:27:14 -0500 From: "Hao Zhang" <zhanghao@nortelnetworks.com> To: 'Frederik Meerwaldt' <frederik@freddym.org>, freebsd-hackers <freebsd-hackers@freebsd.org> Subject: RE: Duplicating packets Message-ID: <E1A4B2CC91EBD1118A510000F80836F80254FCEA@zwdld002.ca.nortel.com>
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Since the router we are testing is a standalone box, we are not using any
routing protocols.
The actual testbed is using Gated. Here is the info from the router. Thanks
in advance.
# ifconfig -au
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.1.16.10 netmask 0xfffff000 broadcast 200.1.31.255
ether 00:50:04:0d:bf:46
media: 10baseT/UTP <half-duplex>
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP <half-duplex> 10baseT/UTP
xl1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.2.16.10 netmask 0xfffff000 broadcast 200.2.31.255
ether 00:50:04:0d:bc:82
media: 10baseT/UTP <half-duplex>
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP <half-duplex> 10baseT/UTP
xl2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.3.16.10 netmask 0xfffff000 broadcast 200.3.31.255
ether 00:b0:d0:2a:79:b2
media: 10baseT/UTP <half-duplex>
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP <half-duplex> 10baseT/UTP
xl3: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.4.16.10 netmask 0xfffff000 broadcast 200.4.31.255
ether 00:50:04:71:5a:76
media: 10baseT/UTP <half-duplex>
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP <half-duplex> 10baseT/UTP
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.5.16.10 netmask 0xfffff000 broadcast 200.5.31.255
ether 00:48:54:87:9f:de
media: autoselect
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP 10baseT/UTP <half-duplex>
rl1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 200.6.16.10 netmask 0xfffff000 broadcast 200.6.31.255
ether 00:48:54:87:e0:3f
media: autoselect
supported media: autoselect 100baseTX <full-duplex> 100baseTX
<half-duplex> 100
baseTX 10baseT/UTP <full-duplex> 10baseT/UTP 10baseT/UTP <half-duplex>
#
# netstat -r
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif
Expire
200.1.16/20 link#1 UC 0 0 xl0
200.1.16.10 0:50:4:d:bf:46 UHLW 0 432 lo0
200.1.16.100 0:de:bb:1:0:0 UHLW 0 0 xl0 1167
200.2.16/20 link#2 UC 0 0 xl1
200.2.16.100 0:de:bb:1:1:0 UHLW 0 142164 xl1 1167
200.3.16/20 link#3 UC 0 0 xl2
200.3.16.100 0:de:bb:1:2:0 UHLW 0 0 xl2 1167
200.4.16/20 link#4 UC 0 0 xl3
200.4.16.100 0:de:bb:1:3:0 UHLW 0 0 xl3 1167
200.5.16/20 link#5 UC 0 0 rl0
200.5.16.100 0:de:bb:1:10:0 UHLW 0 142243 rl0 1167
200.6.16/20 link#6 UC 0 0 rl1
200.6.16.100 0:de:bb:1:11:0 UHLW 1 9048110 rl1 1167
#
--Hao
-----Original Message-----
From: Frederik Meerwaldt [mailto:frederik@freddym.org]
Sent: Wednesday, September 06, 2000 2:16 PM
To: Zhang, Hao [WDLN2:AN22:EXCH]
Cc: freebsd-hackers
Subject: Re: Duplicating packets
Hi!
> I am doing some testing on FreeBSD 3.3 platform by sending some UDP
packets
> thru FreeBSD routers. It's found that FreeBSD duplicates some packet.
> That results in that the received packet are more than sent ones. How
> can I disable the duplication in FreeBSD config. Or did I do some wrong
> in the FreeBSD config. The FreeBSD 3.3 is running on Pentium III, and NIC
is
> 3C905B-Tx.
Could you please inform us about details regarding this problem?
Which routing software are you using? natd? routed? Interface
Characteristics (output of ifconfig of the interfaces)?
netstat -r
Best Regards,
Freddy
--
www.freddym.org
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
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<TITLE>RE: Duplicating packets</TITLE>
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<BODY>
<P><FONT SIZE=3D2>Since the router we are testing is a standalone box, =
we are not using any routing protocols. </FONT>
<BR><FONT SIZE=3D2>The actual testbed is using Gated. Here is the info =
from the router. Thanks in advance.</FONT>
</P>
<P><FONT SIZE=3D2># ifconfig -au</FONT>
<BR><FONT SIZE=3D2>xl0: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.1.16.10 netmask 0xfffff000 broadcast 200.1.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:50:04:0d:bf:46 </FONT>
<BR><FONT SIZE=3D2> media: =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
<half-duplex> 10baseT/UTP</FONT>
<BR><FONT SIZE=3D2>xl1: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.2.16.10 netmask 0xfffff000 broadcast 200.2.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:50:04:0d:bc:82 </FONT>
<BR><FONT SIZE=3D2> media: =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
<half-duplex> 10baseT/UTP</FONT>
<BR><FONT SIZE=3D2>xl2: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.3.16.10 netmask 0xfffff000 broadcast 200.3.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:b0:d0:2a:79:b2 </FONT>
<BR><FONT SIZE=3D2> media: =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
<half-duplex> 10baseT/UTP</FONT>
<BR><FONT SIZE=3D2>xl3: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.4.16.10 netmask 0xfffff000 broadcast 200.4.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:50:04:71:5a:76 </FONT>
<BR><FONT SIZE=3D2> media: =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
<half-duplex> 10baseT/UTP</FONT>
<BR><FONT SIZE=3D2>rl0: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.5.16.10 netmask 0xfffff000 broadcast 200.5.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:48:54:87:9f:de </FONT>
<BR><FONT SIZE=3D2> media: =
autoselect</FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2>rl1: =
flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu =
1500</FONT>
<BR><FONT SIZE=3D2> inet =
200.6.16.10 netmask 0xfffff000 broadcast 200.6.31.255</FONT>
<BR><FONT SIZE=3D2> ether =
00:48:54:87:e0:3f </FONT>
<BR><FONT SIZE=3D2> media: =
autoselect</FONT>
<BR><FONT SIZE=3D2> supported =
media: autoselect 100baseTX <full-duplex> 100baseTX =
<half-duplex> 100</FONT>
<BR><FONT SIZE=3D2>baseTX 10baseT/UTP <full-duplex> 10baseT/UTP =
10baseT/UTP <half-duplex></FONT>
<BR><FONT SIZE=3D2># </FONT>
</P>
<P><FONT SIZE=3D2># netstat -r</FONT>
<BR><FONT SIZE=3D2>Routing tables</FONT>
</P>
<P><FONT SIZE=3D2>Internet:</FONT>
<BR><FONT =
SIZE=3D2>Destination =
Gateway  =
; Flags Refs =
Use Netif Expire</FONT>
<BR><FONT =
SIZE=3D2>200.1.16/20 =
link#1 =
UC =
0 =
0 xl0</FONT>
<BR><FONT =
SIZE=3D2>200.1.16.10 =
0:50:4:d:bf:46 =
UHLW =
0 432 =
lo0</FONT>
<BR><FONT SIZE=3D2>200.1.16.100 =
0:de:bb:1:0:0 =
UHLW =
0 =
0 xl0 1167</FONT>
<BR><FONT =
SIZE=3D2>200.2.16/20 =
link#2 =
UC =
0 =
0 xl1</FONT>
<BR><FONT SIZE=3D2>200.2.16.100 =
0:de:bb:1:1:0 =
UHLW 0 =
142164 xl1 1167</FONT>
<BR><FONT =
SIZE=3D2>200.3.16/20 =
link#3 =
UC =
0 =
0 xl2</FONT>
<BR><FONT SIZE=3D2>200.3.16.100 =
0:de:bb:1:2:0 =
UHLW =
0 =
0 xl2 1167</FONT>
<BR><FONT =
SIZE=3D2>200.4.16/20 =
link#4 =
UC =
0 =
0 xl3</FONT>
<BR><FONT SIZE=3D2>200.4.16.100 =
0:de:bb:1:3:0 =
UHLW =
0 =
0 xl3 1167</FONT>
<BR><FONT =
SIZE=3D2>200.5.16/20 =
link#5 =
UC =
0 =
0 rl0</FONT>
<BR><FONT SIZE=3D2>200.5.16.100 =
0:de:bb:1:10:0 UHLW  =
; 0 142243 =
rl0 1167</FONT>
<BR><FONT =
SIZE=3D2>200.6.16/20 =
link#6 =
UC =
0 =
0 rl1</FONT>
<BR><FONT SIZE=3D2>200.6.16.100 =
0:de:bb:1:11:0 =
UHLW 1 =
9048110 rl1 1167</FONT>
<BR><FONT SIZE=3D2># </FONT>
</P>
<P><FONT SIZE=3D2>--Hao</FONT>
</P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Frederik Meerwaldt [<A =
HREF=3D"mailto:frederik@freddym.org">mailto:frederik@freddym.org</A>]</F=
ONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, September 06, 2000 2:16 PM</FONT>
<BR><FONT SIZE=3D2>To: Zhang, Hao [WDLN2:AN22:EXCH]</FONT>
<BR><FONT SIZE=3D2>Cc: freebsd-hackers</FONT>
<BR><FONT SIZE=3D2>Subject: Re: Duplicating packets</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Hi!</FONT>
</P>
<P><FONT SIZE=3D2>> I am doing some testing on FreeBSD 3.3 platform =
by sending some UDP</FONT>
<BR><FONT SIZE=3D2>packets</FONT>
<BR><FONT SIZE=3D2>> thru FreeBSD routers. It's found that FreeBSD =
duplicates some packet.</FONT>
<BR><FONT SIZE=3D2>> That results in that the received packet are =
more than sent ones. How</FONT>
<BR><FONT SIZE=3D2>> can I disable the duplication in FreeBSD =
config. Or did I do some wrong</FONT>
<BR><FONT SIZE=3D2>> in the FreeBSD config. The FreeBSD 3.3 is =
running on Pentium III, and NIC</FONT>
<BR><FONT SIZE=3D2>is</FONT>
<BR><FONT SIZE=3D2>> 3C905B-Tx.</FONT>
</P>
<P><FONT SIZE=3D2>Could you please inform us about details regarding =
this problem?</FONT>
<BR><FONT SIZE=3D2>Which routing software are you using? natd? routed? =
Interface</FONT>
<BR><FONT SIZE=3D2>Characteristics (output of ifconfig of the =
interfaces)?</FONT>
<BR><FONT SIZE=3D2>netstat -r</FONT>
</P>
<P><FONT SIZE=3D2>Best Regards,</FONT>
<BR><FONT SIZE=3D2> Freddy</FONT>
<BR><FONT SIZE=3D2>--</FONT>
<BR><FONT SIZE=3D2>www.freddym.org</FONT>
</P>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<P><FONT SIZE=3D2>To Unsubscribe: send mail to =
majordomo@FreeBSD.org</FONT>
<BR><FONT SIZE=3D2>with "unsubscribe freebsd-hackers" in the =
body of the message</FONT>
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