What are three features of router-on-a-stick, inter-VLAN routing? (Choose three.)
#1, #3, #5
What is the function of VTP in a LAN switching environment? controls broadcastsstandardizes VLAN tagssimplifies VLAN managementcreates subinterfaces for inter-VLAN routing
A physical router device with an interface that routes between two or more VLANs that are attached to a VLAN network segment by a trunk link. In other words a " router on a [ TRUNK ] " which is originating from switches with independent non routing VLANs.
A trunk connection is affected by broadcast storms on any particular VLAN that is carried by that trunk.
inter_vlan routing on d'link DGS3612 is automatic,you just creates vlan and tag them to the port access and trunk
switch(config)#int type <no> switch(config-if)#switchport mode trunk switch(config-if)#switchport trunk allowed vlan all/vlan no switch(config-if)#exit switch(config)#exit switch#
In traditional inter-VLAN routing (also known as "router-on-a-stick"), only one physical interface is required on the router. However, this single physical interface needs to be configured with multiple sub interfaces, each corresponding to a different VLAN. The router uses these sub interfaces to route traffic between VLANs. The configuration involves: One physical interface on the router (e.g., GigabitEthernet0/1). Multiple sub interfaces (e.g., GigabitEthernet0/1.10, GigabitEthernet0/1.20) corresponding to different VLANs. Each sub interface is assigned an IP address in the respective VLAN's subnet. This setup enables inter-VLAN routing by allowing the router to route traffic between the VLANs using a single physical interface.
The IP address of each router subinterface mist be used as the default gateway for hosts on the corresponding VLAN.
Using a simple show command will suffice to view that vlan's are configured properly. If the vlan's are configured properly on the routers as well as the switches, then the routers can talk to each other and so can the vlan's.show ip route - Provides a snapshot of the routing table entries.ping - verifies connectivity
1) reset the revision number before installing. 2) have a backup switch with existing VLAN data.
Advantages are that it is simple to implement, A Layer-3 switch (expensive) is not required, The router provides communication between VLANs.