The End of WHOIS ?
The convergence trend on HTTPS protocol continues to gather momentum. This time it is the venerable WHOIS protocol that is poised to be replaced with RDAP over HTTP.
The post The End of WHOIS ? appeared first on EtherealMind.
The convergence trend on HTTPS protocol continues to gather momentum. This time it is the venerable WHOIS protocol that is poised to be replaced with RDAP over HTTP.
The post The End of WHOIS ? appeared first on EtherealMind.
Having built a customer base, Puppet Labs is adding more uses for its IT automation tools.
Greg Stemberger is an IT professional who started working in networking in 2000. Working in network operations at Sprint, he managed some of the largest enterprise networks in the world as the Managed Services Operations Engineer focused primarily on routing and switching. He managed more than 20,000 Cisco devices in his initial role at Sprint. Greg has three CCIEs: in route/switch, security, and service provider. He’s also a member of the first group of VCDX-NV certified professionals.
What excites you about network virtualization?
Virtualization is actually nothing new to me, to be honest, because I’ve been dealing with multi-tenancy, which really in my mind, started on the WAN side where VPNs were really one of the first early versions of introducing multi-tenancy and segmentation of the network, and leveraging virtualization-type technology on hardware. It’s just fascinating to see how much that’s evolved and taken off in the compute world. Now, we’re coming back together full circle with SDN. The network is now playing catch-up with how much agility and flexibility virtualization has provided to the compute world. I believe I have been doing virtual networking for a number of years now, but obviously it’s morphed into something much more powerful Continue reading
Multicast Listener Discovery (MLD) protocol is well hidden deep in the bowels of IPv6 protocol stack and most of us tend to gloss over it when we discuss IPv6 neighbor discovery process… until MLD raises its ugly head to bite an unsuspecting network administrator.
The problems with MLD are not new (and I wrote exhaustively about them a while ago), but it’s always nice to see other people raise awareness of broken IPv6 features like Enno Rey and his security team did during the IPv6 Security Summit (part of Troopers 15 conference).
Read more ...Original content from Roger's CCIE Blog Tracking the journey towards getting the ultimate Cisco Certification. The Routing & Switching Lab Exam
The post describes the process of how to upgrade the IOS / Software on a Cisco 4500X switch. I will not be covering how to do a hitless upgrade using ISSU with 2 switches in a VSS pair. This process is performed on two switches which are not in production. So to perform the upgrade... [Read More]
Post taken from CCIE Blog
Original post How to Upgrade IOS on Cisco 4500X Switch