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Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Jason Novinger <jnovinger@gmail.com> Closes #21571: Bump minimatch and markdown-it to resolve security alerts (#21573)
24 lines
828 B
Markdown
24 lines
828 B
Markdown
# ASNs
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An Autonomous System Number (ASN) is a numeric identifier used in the Border Gateway Protocol (BGP) to identify which [autonomous system](https://en.wikipedia.org/wiki/Autonomous_system_%28Internet%29) a particular prefix is originating from or transiting through. NetBox supports both 16- and 32-bit ASNs.
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ASNs must be globally unique within NetBox, and may be allocated from within a [defined range](./asnrange.md). Each ASN may be assigned to multiple [sites](../dcim/site.md).
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## Fields
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### AS Number
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The 16- or 32-bit AS number.
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### RIR
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The [Regional Internet Registry](./rir.md) or similar authority responsible for the allocation of this particular ASN.
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### Role
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The user-defined functional [role](./role.md) assigned to this ASN.
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### Sites
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The [site(s)](../dcim/site.md) to which this ASN is assigned.
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