Layer 3 Switch

vod
  • SVI (Switched Virtual Interface)
    • interface vlan
    • VLAN must exist int the database first
    • そのVLANに所属するaccess/trunk portがない場合はdownになる
  • Native Routed Interface
    • no switchportで有効
  • IP Routing
    • # ip routing
    • 3550/3560はdefaultではdisableなので必要
  • Router on a stick
    • Switch
    • (if)# switchport trunk encap dot1q
    • (if)# switchport mode trunk
    • Router
    • # int e0/0.67
      • (sub-if)# encap dot1q 67
    • # int e0/0.146
      • (sub-if)# encap dot1q 146
    • Router側でnative VLANを指定する場合
    • # int e0/0.100
      • (sub-if)# encap dot1q 100 native