How do you subinterface on a Cisco router?
To configure additional IP interfaces over the VLAN major interface:
- Create a new VLAN subinterface by adding a unique subinterface number to the interface identification command. host1(config-if)#interface fastEthernet 4/1.2.
- Assign a VLAN ID for the subinterface.
- Assign an IP address and mask.
What is VLAN subinterface?
A dot1q VLAN subinterface is a virtual Cisco IOS interface that is associated with a VLAN ID on a routed physical interface. A parent interface is a physical port. Subinterfaces can be created only on Layer 3 physical interfaces.
How do I enable inter VLAN communication?
- Step 1: Create VLANs (VLANs 10 and 20) on the L2 switch. Description.
- Step 2: Assign the VLANs to the L2 switch ports.
- Step 3: Enable L3 routing and create VLANs (VLANs 10 and 20) on the L3 switch.
- Step 4: Configure Switch VLAN Interfaces (SVI)
- Step 5: Configure a routed port for connecting to the firewall on the L3 switch.
What is encapsulation dot1q Cisco?
IEEE 802.1Q encapsulation is configurable on Ethernet and EtherChannel interfaces. IEEE 802.1Q is a standard protocol for interconnecting multiple switches and routers and for defining VLAN topologies. Use the encapsulation dot1q command in subinterface range configuration mode to apply a VLAN ID to the subinterface.
How Intervlan routing is used in the network?
Inter-VLAN routing refers to the movement of packets across the network between hosts in different network segments. VLANs make it easier for one to segment a network, which in turn improves the performance of the network and makes it more flexible, since they are logical connections.
What is a subinterface Cisco?
A subinterface is a virtual interface created by dividing one physical interface into multiple logical interfaces. A sub-interface in a Cisco Router uses the parent physical interface for sending and receiving data. Subinterfaces are used for a variety of purposes.
What is subinterface in Java?
An interface can extend another interface, just as a class can extend another class. Such an interface is called a subinterface. For example: interface DynamicallyScaleable extends Scaleable { void changeScale( int size ); }
What is static route in networking?
Static routing is a form of routing that occurs when a router uses a manually-configured routing entry, rather than information from dynamic routing traffic. In many cases, static routes are manually configured by a network administrator by adding in entries into a routing table, though this may not always be the case.
What is Intervlan routing Cisco?
Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another VLAN. There are three inter-VLAN routing options: Legacy Inter-VLAN routing: This is a legacy solution. It does not scale well. Router-on-a-Stick: This is an acceptable solution for a small- to medium-sized network.
What does encapsulation command do?
One command (encapsulation) enables trunking and defines the VLAN whose frames are considered to be coming in and out of the subinterface. The ip address command works the same way it does on any other interface.
