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My apprehension – a weird nightmare of having to shutdown the router, add the nic and boot the router again – proved wrong. vNIC Hot-Add is supported for VMware ESXi, Citrix XenServer and KVM Not for Hyper-V, Azure, AWS today. Cisco: Virtual Machine Requirements …up to 10 vNICs for ESXi btw. Starting with three default-interfaces select the VM go to „Edit Settings“ Next, Next, Finish be patient …Hot-Remove is supported only using a special „two-step“ strategyRead More →

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Not talking about ATM, PPP, HDLC, Frame Relay WAN. Ethernet is the new WAN. Sometimes you need an easy to use encryption, which is just added to a Link between two devices – and you don’t want to invent IPSec-VPNs which at least add complexity to the design. MACsec solved this problem bringing absolutely transparent encryption, but – since MACsec-Sessions are sent to a „link-local“ ethernet destination address (01-80-c2-00-00-03) they aren’t allowed to be forwarded by any device. A typical „non-dark-fiber“ WAN-Link can’t be encrypted using MACsec. http://www.ieee802.org/1/files/public/docs2013/ae-seaman-macsec-hops-0213-v02.pdf discussed years ago the elegant technical solution. Years later these thoughts are moving into production: Cisco inventedRead More →