Simple Mikrotik DNS cache flush script

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Zero Tier networking

This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more

400 Gigabit randomness

What is the Form Factor for 400G optics? • The first is OSFP  OSFP stands for “Octal Small Form-factor Pluggable”. The electrical interface of an OSFP connector consists of 8 electrical lanes, running at 50Gb/s each, for a total of 400Gb/s. I can only imagine how this will be confused with OSPF. • Second is … Read more

AS Stats using sFlow/NetFlow

This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more

VXLAN terminology and what it means

What are some of the various terminology used in VXLAN? VNI/VNID: Virtual Network Identifier or VXLAN Network Identifier Layer2 VNI carried in VXLAN bridged packets. VNI is configured per VLAN. Layer3 VNI carried in VXLAN routed packets across VTEPs. One L3 VNI per tenant (VRF) Note: Tenant, VRF, L3VNI are sometimes used interchangeably VTEP: VXLAN Tunnel … Read more

China proposes replacement to TCP/IP

China’s “New IP” proposal to replace TCP/IP has a built in “shut up command” for censorship   The Chinese government and the Chinese telecommunications companies such as Huawei under its control are proposing a “New IP” addressing system for the internet to replace TCP/IP. The New IP system includes top-down checks and balances and such … Read more