--- Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 29 Aug 2007 14:27:44 -0700 (PDT) > wang dengyi <dy_wang@xxxxxxxxx> wrote: > > > --- Stephen Hemminger > > <shemminger@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > > On Thu, 23 Aug 2007 11:17:44 -0700 (PDT) > > > wang dengyi <dy_wang@xxxxxxxxx> wrote: > > > > > > > Hi Stephen, > > > > > > > > Here is the detail > > > > kernel version: 2.6.14 > > > > architecture: PPC > > > > ehternet: from the processor mpc5200b > > > > wifi manufactor: Netgate 5004 MP, Atheros > chipset > > > > wifi driver: madwifi 0.91 > > > > WDS on wifi: enabled. > > > > > > > > I guess it's an issue combined by ethernet > > > driver/wifi > > > > driver and bridge. Is there anything you > suspect > > > that > > > > I can check? > > > > > > > > I believe the 2 actions: updating forwarding > > > database > > > > when a stp package is received and delivering > the > > > > package based on the forwarding database, are > > > correct. > > > > I must miss something. For example, STP > detection > > > set > > > > an interface as blocking and remove it from > the > > > > forwarding database? It's just my wild guess. > > > > > > > > By the way, I found Bartek reported the same > issue > > > on > > > > 2.6.11.12 and 2.6.13.2. Here is the link: > > > > > > > > > > https://lists.linux-foundation.org/pipermail/bridge/2005-October/004710.html > > > > He has 3 ethernet nic for each machine and his > fix > > > is > > > > to update the forwarding database only when > the > > > port > > > > is in learning or forwarding state. > > > > > > > > > > There was a bug fix in later kernel (2.6.19) > that > > > causes the forwarding > > > database to be purged when STP decides not to > use > > > interface. > > > > > > > Hi Stephen, > > > > I merged the bridge code from the kernel source > tree > > 2.6.19. But it's the same thing: packages are sent > > through the blocking interface. Anyway, I am > worried > > that something is missing when I merged the code. > > Could you give me more information about the > patch? If > > it's possible, please send me your patch for > 2.6.19? > > Thank you very much. > > > > At the same time, I am looking for the > relationship > > between blocking interface and the forwarding > table > > from the stp source code. No luck until now. Any > hint? > > > > > > Perhaps you are getting packets in over the blocked > device, > and they are getting into the forwarding table? > > -- > Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx> > The answer is yes and no. We do receive packets from the blocked device. But they are BPDU packets only. The fowarding database is updated because the BPDU package is received. Here is the chart of our network. +-------------+ ath0 +---+ bridge 1 +---+ eth0 | +-------------+ | | | | | | +-------------+ | ath0 +---+ bridge 2 +---+ eth0 +-------------+ Both bridge has the same Mac address as the ath0. And ath0 on the bridge 1 is blocked. So when the BPDU packet is received on the ath0 of bridge 1, it update the forwarding table and the following network packets will go through the ath0 which is in blocking mode. Regards, Dengyi ____________________________________________________________________________________ Sick sense of humor? Visit Yahoo! TV's Comedy with an Edge to see what's on, when. http://tv.yahoo.com/collections/222 _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
