en
conf t

!! ping from xp machine -> ping 8.8.8.8 -t 

int g0/0
 shut
 no shut
exit

do show span

int range g0/0 - 1
 switchport mode access
 spanning-tree portfast
 spanning-tree bpduguard enable
exit

!! ping from xp machine -> ping 8.8.8.8 -t

int g0/0
 shut
 no shut
exit

do show span

!! start the Switch2

do show interface status err-disabled

!! to enable the interface back

int g0/1
 shut
 no shut
exit