How does OSPF work
How does OSPF work The last lesson introduced the most fundamental OSPF terms, such as LSA, LSDB, SPF, Areas, Cost, and Neighbors. In this lesson, we continue introducing new concepts…
What is IP Address
IP Address 1. What is IP AddressAn IP address (Internet Protocol Address) is a unique numerical identifier assigned to every device connected to a network that uses the Internet Protocol…
Complete end-to-end Data Flow
Data Flow Computer To Internet Data Flow: Computer to Internet (Opening a Website) Data Flow: Computer to Internet (Opening a Website)Example: User opens Google website (https://www.google.com) User Request from Browser…
Wan Technology
Wan Technology History of WAN The history of the Wide Area Network (WAN) began in the 1960s, when researchers and governments started developing networks to connect computers over long distances.…
What is Port Security
Port Security What is Port Security Port Security is a network switch security feature that allows only specific or limited MAC addresses to connect to a switch port and blocks…
HSRP VRRP GLBP
HSRP VRRP GLBP What is HSRP HSRP (Hot Standby Router Protocol) is a redundancy protocol developed by Cisco Systems to provide high availability for default gateways in a network. It…
MPLS
There are five core tasks we need to accomplish to get an MPLS VPN up and running: show mpls ldp neighbor show mpls forwarding-table Create VRFs and assign routed interfaces…
What is GLBP Gateway Load Balancing Protocol
Cisco GLBP Protocol Gateway Load Balancing Protocol (GLBP) is one of First Hop Redundancy Protocol (FHRP) which provides redundancy like other First Hop Redundancy Protocol, also provides load Balancing. It…
What is VRRP Virtual Router Redundancy Protocol
VRRP Protocol VRRP is an open standard protocol, which is used to provide redundancy in a network. It is a network layer protocol (protocol number-112). The number of routers (group…
What is HSRP Hot Standby Router Protocol
Cisco HSRP Protocol Introduction?Redundancy is a crucial component of every modern network. In this digital era, staying without a network for even a short time is hard. You should include…