Networking Knowledge Base

Here are two EEM Tcl policies that work in concert to track ports that are operationally down for a given period of time.  If they are down long enough, then the ports are administratively shutdown (or placed in a quarantine VLAN if said VLAN is defi...

With the release of cloud-native IOS XE 17.15.3, we are excited to announce cloud operating mode and hybrid operating mode; two powerful ways to manage your Catalyst 9000 switches from the Meraki dashboard.    These updates bring enhancements and n...

The following is assumed you are an administrator  or have superuser privlages on the server.1. The first step is to create a file called "local.superusers" in the folder "<CNR_INSTALL_PATH>/conf/priv" .Solaris:/opt/nwreg2/local/conf/privWindows:C:\P...

Season III of Catalyst Center Expert Insights series provides a holistic view of the Catalyst Infrastructure Licensing, starting from the basics, the need of licenses, license types and management options up to more advanced topics such as availabl...

Download below EIGRP PDF Document with 22 scenarios I used in the past for my certification preparation with the following content, these scenarios are useful to prepare the CCNP Enterprise ENARSI exam: Lab 1: EIGRP Different AS Distribute-List Offs...

                                                                Understanding Cisco Express Forwarding (CEF) Architecture Cisco Express Forwarding FIB and Adjacency Tables CEF Operation CAM and TCAM Tables  Cisco Express Forwarding (CEF): The defaul...

This document is designed to provide a reference guide for locating frequently requested information regarding pluggable optical transceivers;  better known to as GBICs, SFP/ SFP+s, XFPs, XENPAKs, X2s or other.  Although much of this information is f...

1.1 What is TEVA? How are TEVA and Linux packages different?1.2 Why might access to TEVA’s CLI be necessary?1.3. Which Windows OS support native SSH clients?1.4 Access differences between Linux and Windows2.1. Install SSH client if it is not yet inst...

Download BGP Routing Protocol With 16 Practice Labs. Table of Contents Lab 1: MED and AS-Path PrependLab 2: BGP Local PreferenceLab 3: BGP path controlLab 4: BGP ConfederationsLab 5: Bestpath as-path ignore and aggregate-addressLab 6: Community Attri...

Need help navigating the changes to the ThousandEyes UI? Scroll down for a before and after guide, or download the attached PDF!  

Microsoft Entra SSO configuration & security groups for SAML JIT provisioningCreating users in Microsoft EntraCreating Security Groups and enabling access for ThousandEyesSettingAttributes and ClaimsThousandEyes SSO configuration and role mappingsCon...

Core IssueThis error message may be caused by an issue with the TFTP server program or the image may be wrong for the router.ResolutionIf the router is a Cisco 3661 or 3662 series, it could have an Enterprise or a Telco chassis.To resolve this issue,...

Overview The devices under Catalyst Center inventory can have multiple SMU, subpackage or APSP. One can have same site with multiple same type of devices, but they might not have same packages. For example - eWLC package is a pre-requisite for APSP...

IntroductionThis document outlines the BGP best path selection algorithm, and covers specific configuration examples on how to manipulate BGP’s best path decision based on different attributes.  Initial Topology The following topology will be referen...

Cisco 3850:  IOS-XE/Firmware Upgrade (Install Mode)   NOTE: This procedure is aimed at Cisco 3850 switch ONLY.IOS-XE Bundle Mode is not covered. 9300, 9500 (vanilla & high-performance), ISR 1k, ISR 4k and ASR is not covered. Router(s) & switch(es) r...