Thank you Mr Jon marshall for your reactivity but PACKET TRACER it work with SWITCH 3560 and here is the configVLAN1 interfaceno ip addressshutdown!VLAN10 interfaceip address 192.168.1.100 255.255.255.0!Vlan20 interfaceip address 192.168.2.100 255.25...

 HelloI am please enable IP routing on my Switch 4500 and create VLAN 04VLAN 1192.168.1.2192.168.1.3192.168.1.4192.168.1.5But the switch me out a mistake with 192.168 OVERLAPS ???How tohelp me