ICT Knowledgebase
Let’s dive into how to configure STP on switch. We will also look into how STP topology change occurs, what happens when link failure happens and how to protect STP. STP Topology Changes An STP topology change will occur under two...
Spanning Tree Protocol (STP) allows Ethernet LANs to have the added benefits of installing redundant links in a LAN, while overcoming the known problems that occur when adding those extra links. Using redundant links in a LAN design allows the LAN...
Two neighboring switches can treat multiple parallel links between each other as a single logical link called an Ether Channel. Without Ether Channel, a switch treats each physical port as an independent port, applying MAC learning, forwarding, and...
Ether Channel is a port link aggregation technology developed by Cisco, which provides fault-tolerant high-speed links between Switches, Routers, and Servers. Ether Channel technology allows multiple physical Ethernet links (Fast Ethernet or Gigabit...
Cisco Discovery Protocol (CDP) is a Cisco proprietary protocol for network discovery on the data link layer. It can share information such as device names and IOS versions, with other physically connected Cisco devices. Link Layer Discovery Protocol...
Inter-VLAN routing is the ability to route, or send, traffic between VLANs that are normally blocked by default. Switches and VLANs work at the MAC address Layer (Layer 2). Traffic can’t be routed between VLANs at Layer 2 based on MAC addresses....
Layer 2 switch provides connectivity between two or more different devices within a local area network. Switch allow data transfer between end devices in a network. When the data packet is for out of LAN, the packet sent to the gateway router. A...
A VLAN is a group of devices on one or more LANs that are configured to communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments. Because VLANs are based on logical instead of...
Switching is process to forward packets coming in from one port to a port leading towards the destination. When data comes on a port it is called ingress, and when data leaves a port or goes out it is called egress. A communication system may...
let’s configure DNS server. Perform this task to configure the device as a DNS server. A Cisco IOS device can provide service to DNS clients, acting as both a caching name server and as an authoritative name server for its own local host...
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