Networking Knowledge Base

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...

Introduction:Configuration concept of IOS XR:Configuration Example:Related Information: Introduction:Command syntax of IOS XR is different than classic IOS. In this document you will learn about “Commit” command used in IOS XR. To understand this com...

IntroductionConfiguringBPDUGuardConfiguringBPDU Filter IntroductionIn Networking World we know that to avoid any loops or any problem related to switching arcihtecure the stability of the Root Bridge is of paramount importance in the operation and co...

Application Experience aims to provide visibility and insights into the performance of applications. It enables a network administrator to quickly analyze the health of applications present in the network and isolate network issues from application ...

                                                                                            MPLS LAYER-3 VPN IntroductionVirtual Routing and Forwarding (VRF)MP-BGP (Multi-protocol BGP)RD (Route Distinguisher)RT (Route Target)Transport and VPN LabelMP...

Core IssueA Virtual Private Network (VPN) is as a network in which connectivity a customer's multiple sites is deployed on a shared infrastructure with the same access or security policies as in a private network.  VPNs allow multiple customers to sh...

Introduction:Configuration Example: Introduction:The ability to use a router as a TFTP server can be quite useful. We have often used this feature to upgrade several routers that are separated from the TFTP server by slow WAN connections. In situatio...

Introduction This community article will go through the step-by-step process of how to integrate Catalyst SD-WAN with ISE. This integration enables identity-based firewall rule making on Catalyst Edge devices for micro-segmentation at the branch.  Pr...

Summary Here we will go over the configuration needed for MACsec Switch to Switch using a Pre-Shared Key.  Topics that will be covered include, command usage, key derivation and key server election. Please see the MACsec History and Terminology for ...

Introduction:Configuration Overview:Verification Command:Reference:  Introduction: Policy-Based Routing (PBR) provides a method to forward packets by overriding the information available in the IP routing table. By using PBR, customers can implement ...

Have you been looking for a smarter, simpler way to manage your network? Cisco Catalyst Center is a powerful management system that leverages Artificial Intelligence (AI) to connect, secure, and automate network operations. It delivers enterprise-sc...

IntroductionPrerequisitesSoftware upgrade via vManage WebUI:Upload the image to the RepositoryCopy and Install the ImageActivate the new ImageSet Default VersionSoftware upgrade via device CLIPrechecks Before Edge UpgradeCopy the Image to the DeviceI...