The Irony of Using SDN and NFV to Study Legacy Network Technologies

I was recently asked to present at a local Network Engineering Meetup. The topic that I’m going to speak about is how I’m using KVM, OpenFlow, Network Overlays, and OVS to integrate my physical network lab and virtual network lab. The presentation can be found here.

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December 1, 2014

Posted In: CCNA Study Notes, CCNP SP Study Notes, CCNP Study Notes, cisco, Cisco Administration Perl Scripting, Cisco Administration Python Scripting, Innovative, IOS, IOS-XE, IOS-XR, IPv4, KVM, LAN Switching, Layer 3 Switching, Linux, Miscellaneous Hacking, MPLS, NFV, Open Source Alternatives, OpenFlow, openvswitch, SDN, System Administration, training, Virtualization, VLAN, VLAN Trunking, VXLAN

Mental Note: Tracking L3 Glean Attacks

Here’s a handy debug command for tracking L3 Glean attacks on IOS based Cisco routers / L3 switches.

From there, you can take the output, paste the contents into a file, then use some Linux foo to determine the attacker.

Supporting documentation: Built-in CPU Sniffer

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November 28, 2014

Posted In: cisco, IOS, L3 glean, Layer 3 Switching, network security, Routing Protocols