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What does interface mean in router?
In general, the port at which a router connects to a given network. For a given network, the port on the router that is directly connected to the network is called a local router interface, while any port on the router that is connected to a different network is called a remote router interface.
What is the purpose of sub interface in router?
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 l3 interface?
The Catalyst 4500 series switch supports Layer 3 interfaces with the Cisco IOS IP and IP routing protocols. Layer 3, the network layer, is primarily responsible for the routing of data in packets across logical internetwork paths. The logical Layer 3 VLAN interfaces integrate the functions of routing and bridging.
What is the difference between VLAN and interface?
Ports can be assigned to the VLAN, and all frames tagged with a VLAN ID of 10 will be forwarded across trunk ports and VLAN 10 access ports. This VLAN does not require an interface configuration to function properly.
What type of interfaces does a router have?
Routers can have many different types of connectors; from Ethernet, Fast Ethernet, and Token Ring to Serial and ISDN ports. Some of the available configurable items are logical addresses (IP,IPX), media types, bandwidth, and administrative commands.
What is one type of router interface?
Explanation: Router interfaces can be grouped into two categories: LAN interfaces – Used for connecting cables that terminate with LAN devices, such as computers and switches. WAN interfaces – Used for connecting routers to external networks, usually over a larger geographical distance.
What is difference between L3 switch and router?
Hardware/Software decision making – The key difference between Layer 3 switch and router lies in the hardware technology used to making forwarding decision. Layer 3 switch uses ASICs for forwarding decisions. Conversely, the router makes forwarding decisions based on hierarchical Layer-3 addresses.
How to add a VLAN interface to a router?
The Personal Computer (PC) in VLAN2 is connected on the LAN2 port. The server in VLAN1 is connected on the LAN3 port. Step 1. Log in to the web-configuration utility of the router. To add a new VLAN interface on the router, navigate to LAN > LAN/DHCP Settings and click on the plus icon under the LAN/DHCP Settings Table.
How many VLANs are there in a router?
There are two connections to other routers, and there are four VLANs (two switch interfaces on each VLAN). The first eight interfaces are switch interfaces, and they are configured like a layer-2 switch. The last two interfaces are router interfaces, and they are configured with layer-3.
Why is it important to understand VLAN 1?
Understanding VLAN 1. It is important to understand the significance of VLAN 1. By default, all switch ports are part of VLAN 1. VLAN 1 contains control plane traffic and can contain user traffic. Management VLAN, discussed in the next section, is used to monitor and manage the switches on the network.
What is a management VLAN on a Cisco router?
Cisco Business routers come with VLAN 1 assigned to all ports by default. A management VLAN is the VLAN that is used to remotely manage, control, and monitor the devices in you network using Telnet, SSH, SNMP, syslog, or Cisco’s FindIT. By default, this is also VLAN 1. A good security practice is to separate management and user data traffic.