[Dime] RFC 4006 bis - Addition of Filter-Rule

"Bertz, Lyle T [CTO]" <Lyle.T.Bertz@sprint.com> Wed, 29 June 2016 14:38 UTC

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From: "Bertz, Lyle T [CTO]" <Lyle.T.Bertz@sprint.com>
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Thread-Topic: RFC 4006 bis - Addition of Filter-Rule
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Subject: [Dime] RFC 4006 bis - Addition of Filter-Rule
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All,

As part of the updates to RFC 4006 I would propose that we add the Filter-Rule specified in RFC 5777 where we use IPFilterRule.  This permits the specification of QoS filters (and other features not supported by the IPFilterRule type) where they could only be referenced by a Filter-Id (RFC 7155) which often uses an out-of-(diameter)band mechanism.  In the case of 4006, these values are used in Redirect-Action (Section 5.6.2) and Restrict-Access Action (5.6.3).

To do this I would propose we add the Filter-Rule AVP as an option in the Final-Unit-Indication AVP.

Summary of changes

1.       Wherever Restriction-Filter-Rule and Filter-Id were used, Filter-Rule was added (Sections 5.6.2, 5.6.3, 8.34 and 8.35).

2.       Added Filter-Rule as AVP in Final-Unit-Indication AVP.

Fundamental Change (Final-Unit-Action AVP)

Original
         Final-Unit-Indication ::= < AVP Header: 430 >
                                   { Final-Unit-Action }
                                  *[ Restriction-Filter-Rule ]
                                  *[ Filter-Id ]
                                   [ Redirect-Server ]

New
         Final-Unit-Indication ::= < AVP Header: 430 >
                                   { Final-Unit-Action }
                                  *[ Restriction-Filter-Rule ]
                                  *[ Filter-Id ]
                                  *[ Filter-Rule ]
                                   [ Redirect-Server ]

Also, in 8.34 the use of the Filter-Rule is noted as:

>    The Filter-Rule AVP is defined in [RFC5777]. The Filter-Rule AVP can be
>    used when QoS filter rules must be specified.

If there are no objections to this, we can incorporate it into the next set of changes.

Lyle

xml Diff below

15a16
> <!ENTITY RFC5777 SYSTEM "http://xml.resource.org/public/rfc/bibxml/reference.RFC.5777.xml">
1727,1732c1728,1734
<    include one or more Restriction-Filter-Rule AVPs or one or more
<    Filter-Id AVPs in the Credit-Control-Answer message to enable the
<    user to access other services (for example, zero-rated services).  In
<    such a case, the access device MUST drop all the packets not matching
<    the IP filters specified in the Credit-Control-Answer message and, if
<    possible, redirect the user to the destination specified in the
---
>    include one or more Restriction-Filter-Rule AVPs, one or more Filter-
>    Rule AVPs <xref target="RFC5777"/>, or one or more Filter-Id AVPs in
>    the Credit-Control-Answer message to enable the user to access other
>    services (for example, zero-rated services).  In such a case, the
>    access device MUST drop all the packets not matching the IP filters
>    specified in the Credit-Control-Answer message and, if possible,
>    redirect the user to the destination specified in the
1803,1806c1805,1809
<    filters given in the Restriction-Filter-Rule AVP(s) or according to
<    the IP packet filters identified by the Filter-Id AVP(s).  The
<    credit-control server SHOULD include either the Restriction-Filter-
<    Rule AVP or the Filter-Id AVP in the Credit-Control-Answer message.
---
>    filters given in the Restriction-Filter-Rule AVP(s), Filter-Rule AVPs
>    <xref target="RFC5777"/> or according to the IP packet filters
>    identified by the Filter-Id AVP(s).  The credit-control server
>    SHOULD include either the Restriction-Filter-Rule AVP, Filter-Rule AVP
>    or the Filter-Id AVP in the Credit-Control-Answer message.
1827c1830,1831
<    Restriction-Filter-Rule AVP, the Filter-Id AVP, or none of the above.
---
>    Restriction-Filter-Rule AVP, the Filter-Rule AVP, the Filter-Id AVP,
>    or none of the above.
3610,3613c3614,3618
<    Redirect-Server AVP MUST be present.  The Restriction-Filter-Rule AVP
<    or the Filter-Id AVP MAY be present in the Credit-Control-Answer
<    message if the user is also allowed to access other services that are
<    not accessible through the address given in the Redirect-Server AVP.
---
>    Redirect-Server AVP MUST be present.  The Restriction-Filter-Rule AVP(s),
>    Filter-Rule AVP(s) <xref target="RFC5777"/> or the Filter-Id(s) AVP MAY be
>    present in the Credit-Control-Answer message if the user is also allowed
>    to access other services that are not accessible through the address
>    given in the Redirect-Server AVP.
3615,3616c3620,3621
<    If the Final-Unit-Action AVP is set to RESTRICT_ACCESS, either the
<    Restriction-Filter-Rule AVP or the Filter-Id AVP SHOULD be present.
---
>    If the Final-Unit-Action AVP is set to RESTRICT_ACCESS, Filter-Rule AVP(s),
>    Restriction-Filter-Rule AVP(s) or the Filter-Id AVP(s) SHOULD be present.
3622a3628,3630
>    The Filter-Rule AVP is defined in <xref target="RFC5777"/>.  The Filter-Rule AVP can be
>    used when QoS filter rules must be specified.
> </t><t>
3631a3640
>                                *[ Filter-Rule ]
3662,3665c3671,3674
<       IP packet filters defined in the Restriction-Filter-Rule AVP or
<       according to the IP packet filters identified by the Filter-Id
<       AVP.  All the packets not matching the filters MUST be dropped
<       (see <xref target="sec-5.6.3"/>).
---
>       IP packet filters defined in the Restriction-Filter-Rule AVP(s),
>       Filter-Rule AVP(s) or according to the IP packet filters
>       identified by the Filter-Id AVP.  All the packets not matching
>       the filters MUST be dropped (see <xref target="sec-5.6.3"/>).
4668a4678,4679
>      &RFC5777;
>




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