Re: [lwip-users] lwip not working with Linksys switch?

[Simon Goldschmidt]

twenty <address@hidden> wrote:
> I implemented lwip in ADI BF527 DSP on a customized board. The Ethernet
> communication is fine between the board and the PC. However, if i connect
> the board and pc via a linksys switch, there is no communication at all. I
> am sure there is no physical connection problem.  i suspect it might be
> related to lwip stack as the old platform which used KwikNet TCP/IP Stack
> from Kadak didn't have this issue. Do you guys have any idea on that?
> Thanks.

Maybe the switch uses VLANs? If so, try setting ETHARP_SUPPORT_VLAN to 1 in 
lwipopts.h (included since lwIP 1.3.2) to allow VLAN headers (the VLAN id is 
not checked without defining ETHARP_VLAN_CHECK or ETHARP_VLAN_CHECK_FN() 
accordingly - see comment in opt.h).

Simon
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