Alexander (Sasha) Sirotkin
2008-Feb-07 08:05 UTC
[Bridge] unidirectional traffic and flooding
Suppose there is a unidirectional traffic only (for instance UDP) to one of the devices connected to a bridge. At the beginning, the bridge will learn the location of this device from gracious ARP. However, after the timeout the bridge will forget this information and since there is no traffic from that device (remember, the traffic is unidirectional, i.e. to the device only) it will start flooding... and will continue to do so forever. I have a feeling that I must be not the first person to encounter this problem. Any ideas ? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.linux-foundation.org/pipermail/bridge/attachments/20080207/e6b66b15/attachment.htm
On Thu, 7 Feb 2008 15:19:06 +0200 "Alexander (Sasha) Sirotkin" <sasha.sirotkin@gmail.com> wrote:> Suppose there is a unidirectional traffic only (for instance UDP) to one of > the devices connected to a bridge. At the beginning, the bridge will learn > the location of this device from gracious ARP. However, after the timeout > the bridge will forget this information and since there is no traffic from > that device (remember, the traffic is unidirectional, i.e. to the device > only) it will start flooding... and will continue to do so forever. > > I have a feeling that I must be not the first person to encounter this > problem. Any ideas ? >You should check the 802.1d standard. -- Stephen Hemminger <stephen.hemminger@vyatta.com>