RE: [lwip-users] Delay at startup to answer with gateway

[Stéphane Lesage]

> This sounds a lot like a Spanning Tree Protocol (STP) effect.
> However, that doesn't exactly match your description of the
> topology so I'm not sure.
>
> I have an lwIP device on a remote network segment and each
> time it's rebooted (and hence, loses and regains link), it's
> inaccessible for a fixed period until the switch to which it
> attaches moves the port to 'forwarding' mode.  We were able
> to reduce but not eliminate the duration by reconfiguring the
> switch (maybe changing from ordinary STP to RSTP ["Rapid"
> STP] -- something like that; I didn't actually do it myself
> so I'm not sure).  As I recall, the time went from about 35
> seconds to about 20.

We have (R)STP on this network, so this is certainly related.
(I removed the packets from the capture as it seemed irrelevant...)

I suspect the guy who did the capture mirrored not only the one device 
port but others too...

Thanks!