Date: Fri, 17 Jun 2005 12:32:37 +0100 From: Meno Abels <meno.abels@gmail.com> To: freebsd-net@freebsd.org Subject: FreeBSD 5.4 802.1q and linux stalls Message-ID: <344de287050617043219810b3@mail.gmail.com>
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Hello, i have here a very strange problem which is in real a linux problem but it is triggered by freebsd. I run a lan on which are linux 2.6.8(debian= ) and freebsd 5.4 systems are connected to a unmanaged gigabit switch. All system= s uses this gigabit adapter: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet Everything works fine until i do on one freebsd box the following: ifconfig vlan0 172.20.21.1 netmask 255.255.255.0 vlan 2 vlandev re0 i just do this, there is nowhere any configuration for 802.1q on any othe= r machine on this lan.=20 What is happen now the freebsd continues to run without any problem, but all linuxs are stopping to understand any arp responses from a freebsd nor an other linux. So they stop to work over the time on this lan anymore. If I do "ifconfig vlan0 unplumb" it takes up to 10 minutes and the linux's are return to the working status as before the ifconfig vlan0...=20 I didn't not have any clue which network packet could cause these behavior = in a linux but there has to be one. Does anybody as any idea? On that lan there is UDP-Broadcast(spread) and multicast traffic(ganglia)= =20 also there are around 120 carp addresses configured on the 10 freebsd boxes= . Everything else is standard tcpip/nfs traffic. There is no firewall rules on the interfaces on thes linuxs or the freebsds. thanks alot meno=20 P.S. don't ask why i'am try on 802.1q it has something todo with the very high amount of the spread traffic which i try to seperate from some vpn tap/ethernet brigde interfaces.
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