FreeBSD 5.4 802.1q and linux stalls

[Meno Abels]

no nothing like that. 

Meno

2005/6/17, Gleb Smirnoff <glebius at freebsd.org>:
>   Meno,
> 
> On Fri, Jun 17, 2005 at 12:32:37PM +0100, Meno Abels wrote:
> M> i have here a very strange problem which is in real a linux problem
> M> but it is triggered by freebsd. I run a lan on which are linux 2.6.8(debian) and
> M> freebsd 5.4 systems are connected to a unmanaged gigabit switch. All systems
> M> uses this gigabit adapter:
> M>  Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet
> M> Everything works fine until i do on one freebsd box the following:
> M>  ifconfig vlan0 172.20.21.1 netmask 255.255.255.0 vlan 2 vlandev re0
> M> i just do this, there is nowhere any configuration for  802.1q  on any other
> M> machine on this lan.
> M> What is happen now the freebsd continues to run without any problem, but
> M> all linuxs are stopping to understand any arp responses from a freebsd
> M> nor an other linux.
> M> So they stop to work over the time on this lan anymore. If I do
> M> "ifconfig vlan0 unplumb"
> M> it takes up to 10 minutes and the linux's are return to the working
> M> status as before
> M> the ifconfig vlan0...
> M> I didn't not have any clue which network packet could cause these behavior in
> M> a linux but there has to be one. Does anybody as any idea?
> 
> Try to tcpdump on linux when you create vlan on FreeBSD. Any unusual packet
> at this moment?
> 
> M> On that lan there is UDP-Broadcast(spread) and multicast traffic(ganglia)
> M> also there are around 120 carp addresses configured on the 10 freebsd boxes.
> M> Everything else is standard tcpip/nfs traffic. There is no firewall
> M> rules on the interfaces on thes linuxs or the freebsds.
> 
> Any routing software? RIP or OSPF?
> 
> --
> Totus tuus, Glebius.
> GLEBIUS-RIPN GLEB-RIPE
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