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Pape O. Fall's Blog
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 ]
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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 ]
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 ]
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 ]
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 ]
Packet-tracer is a built in utility on the Nexus 9000 that's used to trace the path of a packet transiting the switch. This is extremely useful in terms of troubleshooting as this tool can confirm whether or not a specific traffic flow is traversing the switch. It's also useful to pinpoint packet loss as it [ Read More ]
Ethanalyzer is a NX-OS protocol analyzer tool based on Wireshark. Wireshark is an open source analyzer that decodes packets captured by libpcap (Capture Library). Cisco NX−OS runs on top of the Linux kernel, which uses the libpcap library to support packet capture. The Ethanalzyer is a command-line version of Wireshark that captures and decodes packets, [ Read More ]
One of the benefits of a DMVPN network is that the encrypted tunnels are built on top of DIA circuits more often than not. In that sense, the remote sites typically defer in terms of circuit bandwidth. Per-Tunnel QoS is an effective way to apply QoS policies on the hub router(s) on a per-tunnel instance [ Read More ]
iPerf is one of my favorite tool as it constitutes a fundamental instrument in the Network Engineer toolkit. It is essentially a measurement tool that outputs the maximum achievable bandwidth, MSS or MTU size in an IP network. We also have the capability of tuning diverse parameters such as TCP window size, buffers and generate [ Read More ]
Hello I'm Pape. My friends call me Pop. I'm CCIE #48357. I enjoy my field and love to share it with others. I love to write so I'm sharing my blog with you.
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