[Bridge] Clear a mac from table?

Brad Dameron Brad.Dameron at clearwire.com
Sat Jan 27 16:46:22 PST 2007

This is true. But here is a scenario we are seeing. Here is our setup first.

Customer is on Vlan4 which is bridged to VLAN10. Both vlan's are on the sam=
e switch. If data is streaming in on vlan10 to the vlan4 bridge, then we sw=
itch the customer to vlan10, the streaming data will continue on to the bri=
dge server and the customer will not be able to transfer data until that st=
ream dies or if the timer just happens to be expiring for that MAC. So we n=
eed to clear the mac. I did a brctl setageing 3 to set the timer lower. But=
 what effect could this have when I have some 50k to 100k mac's known by th=
e bridging server?

Brad Dameron
Network Engineer TierII


From: Stephen Hemminger [mailto:shemminger at linux-foundation.org]
Sent: Fri 1/26/2007 9:09 PM
To: Brad Dameron
Cc: bridge at lists.osdl.org
Subject: Re: [Bridge] Clear a mac from table?

On Fri, 26 Jan 2007 16:30:05 -0800
Brad Dameron <brad.dameron at clearwire.com> wrote:

> Anyone know of a way to clear a mac from the bridge hash table instead
> of waiting for it to expire? This would be handy with pushing people
> between vlans that are on the same switch.

No API exists but the first transmit (gratuitous ARP?) would
move the entry.

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