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max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9rc6 Precedence: list Subject: =?utf-8?q?=5BIdr=5D_draft-li-idr-bgpls-sr-policy-composite-path-09=2Etxt?= List-Id: Inter-Domain Routing Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --_000_DM8PR08MB74130B04EC996D7485AF4412B3C3ADM8PR08MB7413namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The question at the microphone related to the discussion on draft-jiang-idr-sr-policy-composite-path. The draft-jiang-idr-sr-policy-composite-path does not specify how the Color precedence works between the setting of color in the BGP Update by three things: 1) Color extended community attribute 2) Color TLV 3) Segment list's Constituent SR Policy TLV - Color Sub-TLV If I were an operator, I would like to BGP-LS a) What color set by policy on the composite candidate path, b) Where this color came from (Color Ext. Community, Color TLV in Tunnel Attribute, Segment List's Constituent SR Policy TLV). Does your draft assume BGP and/or the SRPM saves this information? If so, how does it query for this information? Cheerily, Sue Relevant text sections for reference: draft-jiang-idr-sr-policy-composite-path text that applies: SR Policy SAFI NLRI: Attributes: Tunnel Encaps Attribute (23) Tunnel Type: SR Policy Binding SID SRv6 Binding SID Preference Priority Policy Name Policy Candidate Path Name Explicit NULL Label Policy (ENLP) Segment List Weight Segment Segment ... Constituent SR Policy Color Weight Fowarding Class ... The Constituent SR Policy sub-TLV has the following format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | RESERVED | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Color | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Weight | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | sub-TLVs | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1: Constituent SR Policy sub-TLV format draft-li-idr-bgpls-sr-policy-composite-path-09.txt The Composite Candidate Path TLV is used to report the constituent SR policy(s) of a composite candidate path. It is carried in the optional non-transitive BGP- LS Attribute defined in [RFC9552] and is associated with the SR Policy Candidate Path NLRI type. Only a single instance of this TLV is advertised for a given candidate path. If multiple instances are present, then the first valid (i.e., not determined to be malformed as per section 8.2.2 of [RFC9552]) one is used and the rest are ignored. The TLV has following format: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | RESERVED | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Color | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Weight | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sub-TLVs (variable) // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ --_000_DM8PR08MB74130B04EC996D7485AF4412B3C3ADM8PR08MB7413namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

The question at the microphone related to the discussion

on draft-jiang-idr-sr-policy-composite-path.

 

 

The draft-jiang-idr-sr-policy-composite-path does not speci= fy

how the Color precedence works between the setting of

color in the BGP Update by three things:<= /p>

1) Color extended community attribute

2) Color TLV

3) Segment list’s Constituent SR Policy TLV – C= olor Sub-TLV

 

If I were an operator, I would like to BGP-LS

a) What color set by policy on the composite candidate path= ,

b) Where this color came from (Color Ext. Community,

   Color TLV in Tunnel Attribute, Segment Li= st’s

    Constituent SR Policy TLV).

 

Does your draft assume BGP and/or the SRPM saves this infor= mation?

If so, how does it query for this information?

 

Cheerily, Sue

 

 

 

Relevant text sections for reference:

 

 

draft-jiang-idr-sr-policy-composite-path text that applies:

      SR Policy SAFI NLRI: &l= t;Distinguisher, Policy-Color, Endpoint>

          Attr= ibutes:

          = ;    Tunnel Encaps Attribute (23)

          = ;        Tunnel Type: SR Policy

          = ;            Binding= SID

          = ;            SRv6 Bi= nding SID

          = ;            Prefere= nce

          = ;            Priorit= y

          = ;            Policy = Name

          = ;            Policy = Candidate Path Name

          = ;            Explici= t NULL Label Policy (ENLP)

          = ;            Segment= List

          = ;            &n= bsp;   Weight

          = ;            &n= bsp;   Segment

          = ;            &n= bsp;   Segment

          = ;            &n= bsp;   ...

          = ;            Constit= uent SR Policy

          = ;            &n= bsp;   Color

          = ;            &n= bsp;   Weight

          = ;            &n= bsp;   Fowarding Class

          = ;            ...

 

 



   The Constituent SR Policy sub-TLV has the foll= owing format:

 

     0     &nb= sp;            = 1            &= nbsp;      2      &n= bsp;            3

     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 = 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |      Ty= pe     |        = ; Length           &= nbsp;  |     RESERVED    |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |     &nb= sp;            =            Color &nb= sp;            =             &nb= sp;  |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |     &nb= sp;            =            Weight &n= bsp;            = ;            &n= bsp; |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |     &nb= sp;            =           sub-TLVs  =             &nb= sp;            |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

 

 

          = ;         Figure 1:  Constitue= nt SR Policy sub-TLV format

 

 

 

draft-li-idr-bgpls-sr-policy-composite-path-09.txt

 

The Composite Candidate Path TLV is used to report the cons= tituent SR

   policy(s) of a composite candidate path. = It is carried in the

   optional non-transitive BGP- LS Attribute defi= ned in [RFC9552] and is

   associated with the SR Policy Candidate Path N= LRI type.  Only a

   single instance of this TLV is advertised for = a given candidate path.

   If multiple instances are present, then the fi= rst valid (i.e., not

   determined to be malformed as per section 8.2.= 2 of [RFC9552]) one is

   used and the rest are ignored. The TLV has fol= lowing format:



   0       &nb= sp;           1 &nbs= p;            &= nbsp;    2        &n= bsp;          3

   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 = 3 4 5 6 7 8 9 0 1

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

   |       &nb= sp;      Type      &= nbsp;      |      &n= bsp;      Length     &nbs= p;      |

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

   |       &nb= sp;            =         RESERVED    =             &nb= sp;          |

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

   |       &nb= sp;            =          Color   &nb= sp;            =              |<= o:p>

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

   |       &nb= sp;            =          Weight   &n= bsp;            = ;            |<= /o:p>

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

   |       &nb= sp;            =    Sub-TLVs (variable)       &= nbsp;           &nbs= p; //

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +-+-+-+-+-+-+-+-+-+

 

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