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How to configure GRE Tunnel Between Palo Alto and Cisco Router

gre-tunnel-between-palo-alto-and-cisco-router

In this article, we will configure the GRE Tunnel between Palo Alo Firewall and Cisco Router. GRE stands for (Generic Routing Encapsulation). It was developed by CISCO but supported by different devices. To configure the GRE tunnel, you…

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How to connect GNS3 Appliances to Internet

how-to-connect-gns3-to-internet

In this article, we will discuss how we can connect our GNS3 appliances with the internet. Many times, we want to communicate our virtual appliances to communicate with the Internet. You can also connect your virtual appliances with…

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OSPF | Open Shortest Path First | Quick Overview

ospf-routers-and-areas-summery

In this article, we will discuss Open Shortest Path First (OSPF). It is an open standard routing protocol which is defined as RFC 2328 for IPv4 and RFC 5340 for IPv6. There is a total of 5 packets(messages)…

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EIGRP Packet Types / Messages Types and Neighborship Parameters

eigrp-packets

Enhanced Interior Gateway Routing Protocol (EIGRP) is one of the famous routing protocols. It is widely used in networking. In this article, we will discuss types of messages/ packets which is used in the EIGRP Protocol. We will…

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OSPF Packet Types / Message Types and Neighborship Requirements

ospf-packets-ospf-messages

In this article, we will discuss various OSPF Packet types¬†or Message types¬†that are used by the OSPF Routing Protocol. There are several messages which are used in OSPF in order to share data bits from one router to…

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How to Reset Cisco 7821 | 7841 IP Phone to factory default – 2023

how-to-reset-cisco-7821-7841-ip-phone

Method 1: Steps to reset Cisco 7821 IP phone using Keypad Power of the IP phone If connected with a direct power cube, remove the power cube. If connected with PoE (Power over Ethernet), remove the LAN cable….

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How to disable Automatic DNS Lookup In Cisco Devices

how-to-disable-dns-lookup-in-cisco-devices.

What is the automatic DNS Lookup? DNS (Domain Name System), is a system that is used to translate a domain name to an IP address. In Cisco devices, this lookup feature is by default enabled. So, whenever someone…

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Static Routing : Everything you need to know

what-is-static-routing

Static Routing is the routing process in which network administrators manually configure static routes on routers. Unlike dynamic routing, in static routing, a configured network route does not change with the change in the network. Further, in this…

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IPv4 : Internet Protocol Version 4 (Explained with Header)

introduction-to-ipv4-header

In this article, we will discuss IPv4 in detail. IPv4 stands for Internet Protocol version 4. It is the 4th version of Internet Protocol and widely used protocol in communication over different types of networks. It was discovered…

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DORA Process in DHCP – Explained in detail

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DORA is a process used by DHCP (Dynamic Host Configuration Protocol). DHCP is used for providing an automatic IP address to Hosts that want to connect to a network. In this article, we will discuss the DORA process…

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