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-00 of sidrops version published

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Randy Bush 2020-03-09 10:56:43 -07:00
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draft-ymbk-sidrops-8210bis.xml
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@ -967,22 +967,30 @@
</artwork> </artwork>
</figure> </figure>
<t>The ASPA PDU is to support <xref <t>The ASPA PDU is to support <xref
target="I-D.ietf-sidrops-aspa-profile"/>. Receipt of an ASPA target="I-D.ietf-sidrops-aspa-profile"/>. An ASPA PDU
PDU announcement when the router already has an ASPA PDU with represents one single customer AS and zero or more provider ASs
the same Customer Autonomous System Number, replaces the for a particular Address Family. Receipt of an ASPA PDU
previous one. This is to avoid a race condition when a BGP announcement when the router already has an ASPA PDU with the
announcement is received between an withdrawn PDU and a new same Customer Autonomous System Number and the same Address
announced PDU. Therfore, the cache SHOULD deliver entire data Family (see Flags field), replaces the previous one. This is to
of an ASPA record in a single ASPA PDU. avoid a race condition when a BGP announcement is received
between an withdrawn PDU and a new announced PDU. Therfore, the
cache SHOULD deliver entire data of an ASPA record in a single
ASPA PDU.
</t> </t>
<t> <t>
The lowest-order bit of the Flags field is 1 for an The Flags field is defined as follows:</t>
announcement and 0 for a withdrawal. Withdrawal of a <figure>
non-existant or non-matching ASPA PDU is an error. <artwork>
</t> Bit Bit Name
<t> ---- -------------------
The Provider AS Count is the number of 32-bit Provider 0 Announce/Withdraw (ann == 0, with == 1)
Autonomous System Numbers in the PDU. There may be none. 1 AFI (IPv4 == 0, IPv6 == 1)
3-7 Reserved, must be zero
</artwork>
</figure>
<t>The Provider AS Count is the number of Provider Autonomous
System Number(s) at the end of the PDU, and may be zero or more.
</t> </t>
<t> <t>
The Customer Autonomous System Number is the 32-bit The Customer Autonomous System Number is the 32-bit
@ -990,6 +998,10 @@
PDU. There may be only one ASPA for a Customer Autonomous PDU. There may be only one ASPA for a Customer Autonomous
System Number active at any time. System Number active at any time.
</t> </t>
<t>
The Provider AS Count is the number of 32-bit Provider
Autonomous System Numbers in the PDU. There may be none.
</t>
<t> <t>
There are zero or more 32-bit Provider Autonomous System There are zero or more 32-bit Provider Autonomous System
Number fields; see <xref Number fields; see <xref