[c-nsp] Backup edge port

[Peter Rathlev]

On Mon, 2011-01-10 at 19:44 +0100, Gert Doering wrote:
> On Mon, Jan 10, 2011 at 07:56:51PM +0200, Ibrahim Abo Zaid wrote:
> > I have a server connected to 2 switches and need to implement
...
> STP won't help unless the server actually runs a *bridge* between his
> two ports, and you most certainly don't want *that*.

+1

We actually used bridging for failover on several CentOS 4 servers until
some time ago, lettings the servers participate in the spanning tree.
That's a horrible idea (though it was actually mine back when we did
it!), both because failover times are 3 x FWD delay and since it's a lot
harder to protect the network.

For Linux servers, just use bonding with the modprobe.conf options
"mode=active-backup primary=eth0". I can give a full example if somebody
would want that.

-- 
Peter