On 04/11/2014 09:31 AM, longguang.yue wrote: > hi,all > sometimes ping fails when enable stp , why? > Probably stp initialisation isn't yet finished, and the switch will block any traffic until that happens. During that time any traffic will return with -EHOSTUNREACH. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization