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* Update asn.md There are no 64-bit AS Numbers - 16- and 32-bit only : https://www.iana.org/assignments/as-numbers/as-numbers.xhtml * Update docs/models/ipam/asn.md Co-authored-by: bluikko <14869000+bluikko@users.noreply.github.com> --------- Co-authored-by: bluikko <14869000+bluikko@users.noreply.github.com>
20 lines
749 B
Markdown
20 lines
749 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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### Sites
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The [site(s)](../dcim/site.md) to which this ASN is assigned.
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