RouteLeak

Forwarding IPSec Ports to a Firewall Behind a NAT Router

In Progress…

Classification: ADVANCED SERVICES

Posted On: 03/26/2025

Optimizing VXLAN with vPC Fabric Peering

In Progress…

Classification: ADVANCED SERVICES

Posted On: 03/26/2025

Decoding the Meraki Go Hardware LED Lights

Each Meraki Go device features a multi-color LED indicator designed to offer users a quick and intuitive way to assess the device’s operational status. The placement of this LED varies depending on the specific model, and the color or behavior (solid, blinking, etc.) of the light reflects different states, such as power, connectivity, or error [ Read More ]

Classification: SEC & SYS MGMT

Posted On: 03/26/2025

Cisco ACI Diagnostic and Troubleshooting Commands

This is a comprehensive list of essential ACI troubleshooting commands for controllers, leaves, and spines. APIC Controller Troubleshooting Commands Leaf Troubleshooting Commands in Cisco ACI Spine Troubleshooting Commands in Cisco ACI Packet Tracing Commands in Cisco ACI Debug & Trigger Commands in Cisco ACI Conclusion Troubleshooting Cisco ACI can be complex, but having the right [ Read More ]

Classification: ADVANCED SERVICES

Posted On: 03/16/2025

Meraki MX Security Appliance: Unboxing and First-Time Setup

Cisco Meraki is a highly recognized name in the networking industry and has been a subsidiary of Cisco Systems since its acquisition in 2012. Over the years, Meraki has become a leader in cloud-managed networking solutions, offering a broad range of products that deliver simplicity, scalability, and powerful management features. While there are many cloud-based [ Read More ]

Classification: SEC & SYS MGMT

Posted On: 10/01/2024

BGP EVPN VXLAN Explained

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Classification: ADVANCED SERVICES

Posted On: 06/18/2023

Cisco UCSM Login Error – Issues with Java 7 Update 45

I ran into an issue today logging into UCS Manager where I received the following error: Login Error: java.io.IOException: Invalid Http response Login Error: java.io.IOException: Server returned HTTP response code: 400 for URL: http://10.x.x.x:443/nuova This is due to an interoperability issue with Java 7 Update 45 and the UCSM GUI. There are several methods to [ Read More ]

Classification: USE CASES

Posted On: 10/27/2019

Layer 2 Bridging over GRE – L2TPv3

This use case consist of a company wanting to temporarily extend the users broadcast domain from one site to another. The issue here is that the sites are geophysically disjointed and each remote site only has a DIA circuit. In order to resolve the problem, we need a solution capable of encapsulating L2 traffic through [ Read More ]

Classification: USE CASES

Posted On: 03/02/2019

Route Leaking – Global & VRF Routing Table

What's a blog called "RouteLeak" without a Route Leaking post. As the name implies, route leaking implies leaking routes or importing/exporting network prefixes between VRFs or between the global routing table and a VRF segment. I will show you different methods to get it configured as follow: Route Leaking between Global and VRF table: Static [ Read More ]

Classification: ADVANCED SERVICES

Posted On: 03/02/2019

Nexus 9000 – TCPDUMP

With the evolution of SDN and Network Programmability, the NX-OS has come a long way with the integration of Linux based tools to support: Bash shell Python shell API access Linux containers for custom applications The Bash shell can be extremely powerful if you're proficient in it. I wanted to show you today a few commands [ Read More ]

Classification: ADVANCED SERVICES

Posted On: 02/27/2019