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.
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.
Advantages are that it is simple to implement, A Layer-3 switch (expensive) is not required, The router provides communication between VLANs.
A VLAN is a virtual LAN. In technical terms, a VLAN is a broadcast domain created by switches. Normally, it is a router creating that broadcast domain. With VLANs, a switch can create the broadcast domain. This works by, you, the administrator, putting some switch ports in a VLAN other than 1, the default VLAN. All ports in a single VLAN are in a single broadcast domain. Because switches can talk to each other, some ports on switch A can be in VLAN 10 and other ports on switch B can be in VLAN 10. Broadcasts between these devices will not be seen on any other port in any other VLAN, other than 10. However, these devices can all communicate because they are on the same VLAN. Without additional configuration, they would not be able to communicate with any other devices, not in their VLAN.
Based on the VLAN tag.
the switchport access vlan 99 command is used to designate a specific VLAN for a switch port, allowing you to control how traffic on that port is treated and segregated from traffic on other ports and VLANs in the network. This is a fundamental configuration step in building and managing VLANs within a network infrastructure.
What are three features of router-on-a-stick, inter-VLAN routing? (Choose three.)
#1, #3, #5
Traditional inter-VLAN routing involves using a router to enable communication between different VLANs (Virtual Local Area Networks). Each VLAN is assigned its own subnet, and the router interfaces with each VLAN through sub-interfaces or physical interfaces. This method allows for the separation of broadcast domains while facilitating inter-VLAN traffic, enhancing network performance and security. Typically, this approach requires a router or a Layer 3 switch to manage the routing process.
Router-on-a-stickRouter-on-a-stick using trunksLayer 3 switching
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.
Advantages are that it is simple to implement, A Layer-3 switch (expensive) is not required, The router provides communication between VLANs.
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#
What is the function of VTP in a LAN switching environment? controls broadcastsstandardizes VLAN tagssimplifies VLAN managementcreates subinterfaces for inter-VLAN routing
both are the common inter networking devices(functionally) but the layer 3 switch has the functionality of both switch and router, layer 3 switch are most commonly used in frame relay networks, layer 3 switches are also capable of inter vlan routing
inter_vlan routing on d'link DGS3612 is automatic,you just creates vlan and tag them to the port access and trunk
To enable communication between hosts on VLAN 10 and VLAN 20, a router or Layer 3 switch is required to perform inter-VLAN routing. This device must have interfaces configured for both VLANs, either through sub-interfaces or routed ports. Additionally, proper routing protocols or static routes should be configured to facilitate traffic between the two VLANs. Finally, the necessary access control lists (ACLs) should be set up to allow the desired traffic between the VLANs.