19 lines
753 B
Markdown
19 lines
753 B
Markdown
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---
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title: CIDR
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id: cidr
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date: 2019-11-12
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full_link:
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short_description: >
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CIDR is a notation for describing blocks of IP addresses and is used heavily in various networking configurations.
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aka:
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tags:
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- networking
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---
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CIDR (Classless Inter-Domain Routing) is a notation for describing blocks of IP addresses and is used heavily in various networking configurations.
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<!--more-->
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In the context of Kubernetes, each {{< glossary_tooltip text="Node" term_id="node" >}} is assigned a range of IP addresses through the start address and a subnet mask using CIDR. This allows Nodes to assign each {{< glossary_tooltip text="Pod" term_id="pod" >}} a unique IP address. Although originally a concept for IPv4, CIDR has also been expanded to include IPv6.
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