I looked at my calendar
It isn't 1st of April yet ...
Cisco has taken a long, hard look at the biggest bullet in its kit, and bitten down: the company has announced it will separate its router and switch software from the hardware that hosts it. The “kill-your-darlings” decision is in response to demand from hyperscale Web outfits and service providers, rising sales of white-box …
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IOS-XE and NX-OS were both designed to run in user mode space on a Linux kernel.
Both had been available in virtualized forms for years: The Nexus 1000V VMware virtual switch ran NX-OS, and the CSR-1000V virtual router runs IOS-XE. CSR-1000V can run on VMware, KVM, Xen, Hyper-V, Azure, and AWS.
While VMware's decision to no longer support third-party virtual switches ended Nexus 1000V's role, the CSR-1000V is popular as a way to provide OTV services without needing an Nexus 7000 or an ASR.