Cisco SD-WAN Firewall Step-by-step
Dec 28, 2021
In this blog post, we want to show how to enable a zone-based firewall on the Cisco SD-WAN platform. The example continues on the topology in the Direct Internet Access article. We introduced an additional site to demonstrate that the configuration applied doesn’t affect inter-site traffic.
Read MoreCisco SD-WAN Packet Capture
Nov 27, 2021
Packet capture provides a way of getting a copy of the packets traversing a router. This can be useful for troubleshooting purposes when you want to see if the packets are being received or sent by the router via the expected interface.
Read MoreCisco SD-WAN Direct Internet Access (DIA) Step by Step
Nov 20, 2021
SD-WAN deployments use the Internet as the transport to replace WAN networks traditionally designed to leverage centralized Internet access via the data center. Direct Internet Access (DIA) refers to the configuration when Internet-facing traffic breaks out directly from the branch router.
Read MoreCisco SD-WAN CLI vs. vManage Mode
Oct 2, 2021
Cisco SD-WAN devices can be either in vManage or CLI mode. In vManage mode, the configuration is performed on vManage and then pushed to the device. Local configuration changes are not allowed. In CLI mode, changes are performed locally on the device. vManage mode is the preferred and recommended option for most SD-WAN implementations. However, you can occasionally switch devices into CLI mode to perform specific tasks.
Read MoreCisco SD-WAN IPsec Tunnel Configuration
Jul 11, 2021
This blog post describes configuring a site-to-site IPsec VPN tunnel from a Cisco SD-WAN IOS-XE-based router to a non-SD-WAN device.
Read MoreCisco IP SLA IOS-XE
Feb 7, 2021
Cisco IP Service Level Agreements (SLAs) is a proprietary feature available on Cisco routers and switches, which actively generates monitoring traffic, processes replies, and measures network performance.
Read MoreDescribe Wireless Principles CCNA
Apr 27, 2020
The new CCNA exam now includes topics from the discontinued CCNA Wireless exam. We will divide these topics into several blog posts – this one will focus on radio fundamental topics and the following posts will cover SSIDs, security protocols, and encryption.
Read MoreCisco DNA Center
Apr 11, 2020
This article describes the role and functions of Cisco DNA Center in the context of CCNA exam blueprint requirements.
Read MoreExplain Role and Function of Network Components – Part 3 – Routers, Firewalls, and IPSs
Apr 5, 2020
This is the third article about the roles and functions of different network components (click on the links for the first and second parts). In this part we will discuss operations of devices deployed on the network edge – Routers, Firewalls and Intrusion Protection Systems (IPSs).
Read MoreExplain Role and Function of Network Components – Part 2 – Cisco Access Points and WLCs
Mar 30, 2020
This is the second part of the series of articles about the roles and functions of different network components. In this part, we will discuss the operations of Cisco Wireless Access Points (APs) and Cisco WLAN Controllers (WLCs). The purpose of this blog post is to explain what a Cisco-based wireless network consists of and how these elements interact with each other.
Read MoreExplain Role and Function of Network Components – Part 1
Mar 25, 2020
This blog post provides an overview of different network components and their role and functions. The article’s target audience is CCNA candidates and students looking for introductory information about computer network components. In this first post of the 3-article series, we will start by exploring the functions of endpoints and servers. Then the section about LAN switches will follow focusing on the difference between Layer 2 and Layer 3 switch operation.
Read MoreCisco Clock Timezone Configuration
Mar 22, 2020
This article provides sample Cisco configuration commands for popular cities using “clock timezone” and “clock summer-time” commands. It also aggregates information about different time zones and their daylight saving dates.
Read MoreCisco SD-Access Components
Nov 11, 2019
I’ve posted earlier overview articles about Cisco’s WAN and Data Center software-defined technologies – Cisco Viptela SD-WAN and ACI. Now it’s time to explore the solution for LAN. Cisco SD-Access is the evolutionary step in how campus networks are built and operated. In this blog post, we will discover components of Cisco SD-Access, namely control and data plane elements.
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