Re: [Lsr] Regarding OSPFv3 VPN Domain Type
Thank you very much Acee and Alexander. I got the required information. Regards, Rajesh On Fri, Sep 17, 2021 at 8:28 PM Alexander Okonnikov < alexander.okonni...@gmail.com> wrote: > Hi Acee, Rajesh, > > RFC 6565 states that the same communities, defined in RFC 4577, are reused. > > Just before the text, quoted by Rajesh, there is statement: > > "The BGP Extended Communities attributes defined in [RFC4577] are reused > for convenience." > > RFC 4577 defines sub-type 0x05 and also refers to RFC 4360, where 0x00 and > 0x01 types are defined. Only gap, that I notice, is that RFC 4360 (and RFC > 4577) mentions type 0x02, but doesn't define that type and doesn't point to > reference of its definition (it was defined later in RFC 5668). > > 17 сент. 2021 г., в 17:15, Acee Lindem (acee) < > acee=40cisco@dmarc.ietf.org> написал(а): > > Hi Rajesh, > > This is the extended community type and RFC 6565 really should have had > some references for this - It took me a good 15-20 minutes to recall all > the details. The first octet specifies the extended community type of > domain ID as defined in > https://www.rfc-editor.org/rfc/rfc7153.html#section-5.1.1 > > TYPE VALUE NAME > > 0x00 Transitive Two-Octet AS-Specific Extended >Community (Sub-Types are defined in the >"Transitive Two-Octet AS-Specific Extended >Community Sub-Types" registry) > > 0x01 Transitive IPv4-Address-Specific Extended >Community (Sub-Types are defined in the >"Transitive IPv4-Address-Specific Extended >Community Sub-Types" registry) > > 0x02 Transitive Four-Octet AS-Specific Extended >Community (Sub-Types are defined in the >"Transitive Four-Octet AS-Specific Extended >Community Sub-Types" registry) > > > The second octet (0x05) is the registered sub-type value for the OSPF > Domain Identifier. See https://www.rfc-editor.org/rfc/rfc4577.html#page-10 > . > > Hope this helps, > Acee > > *From: *Lsr on behalf of Rajesh M < > rajesh.i...@gmail.com> > *Date: *Friday, September 17, 2021 at 5:44 AM > *To: *"lsr@ietf.org" > *Subject: *[Lsr] Regarding OSPFv3 VPN Domain Type > > Hi All, > > For OSPFv3 from RFC 6565, section 4.4, it is mentioned that 2-byte type > field in the attribute. > May I know what three different types 0x0005, 0x0105 0x0205 represent? > > >OSPF Domain Identifier Extended Communities Attribute > > > >Each OSPFv3 Instance within a VRF MUST have a Domain ID. The Domain > >ID is configured per OSPFv3 Instance. The OSPFv3 Domain ID is a > >6-byte number, and its default value is 0. *This attribute has a* > > * 2-byte type field, encoded with a value of 0x0005, 0x0105, or 0x0205.* > > > > 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 Value |Domain Identifier | > >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >| Domain Identifier Cont. | > >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > > > The OSPF Domain Identifier Extended Communities Attribute > > > > Thanks & Regards, > > Rajesh > > > > > > > > ___ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr > > > ___ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
Re: [Lsr] Regarding OSPFv3 VPN Domain Type
Hi Acee, Rajesh, RFC 6565 states that the same communities, defined in RFC 4577, are reused. Just before the text, quoted by Rajesh, there is statement: "The BGP Extended Communities attributes defined in [RFC4577] are reused for convenience." RFC 4577 defines sub-type 0x05 and also refers to RFC 4360, where 0x00 and 0x01 types are defined. Only gap, that I notice, is that RFC 4360 (and RFC 4577) mentions type 0x02, but doesn't define that type and doesn't point to reference of its definition (it was defined later in RFC 5668). > 17 сент. 2021 г., в 17:15, Acee Lindem (acee) > написал(а): > > Hi Rajesh, > > This is the extended community type and RFC 6565 really should have had some > references for this - It took me a good 15-20 minutes to recall all the > details. The first octet specifies the extended community type of domain ID > as defined in https://www.rfc-editor.org/rfc/rfc7153.html#section-5.1.1 > <https://www.rfc-editor.org/rfc/rfc7153.html#section-5.1.1> > > TYPE VALUE NAME > > 0x00 Transitive Two-Octet AS-Specific Extended >Community (Sub-Types are defined in the >"Transitive Two-Octet AS-Specific Extended >Community Sub-Types" registry) > > 0x01 Transitive IPv4-Address-Specific Extended >Community (Sub-Types are defined in the >"Transitive IPv4-Address-Specific Extended >Community Sub-Types" registry) > > 0x02 Transitive Four-Octet AS-Specific Extended >Community (Sub-Types are defined in the >"Transitive Four-Octet AS-Specific Extended >Community Sub-Types" registry) > > > The second octet (0x05) is the registered sub-type value for the OSPF Domain > Identifier. See https://www.rfc-editor.org/rfc/rfc4577.html#page-10 > <https://www.rfc-editor.org/rfc/rfc4577.html#page-10>. > > Hope this helps, > Acee > > From: Lsr mailto:lsr-boun...@ietf.org>> on behalf of > Rajesh M mailto:rajesh.i...@gmail.com>> > Date: Friday, September 17, 2021 at 5:44 AM > To: "lsr@ietf.org <mailto:lsr@ietf.org>" mailto:lsr@ietf.org>> > Subject: [Lsr] Regarding OSPFv3 VPN Domain Type > > Hi All, > > For OSPFv3 from RFC 6565, section 4.4, it is mentioned that 2-byte type field > in the attribute. > May I know what three different types 0x0005, 0x0105 0x0205 represent? > >OSPF Domain Identifier Extended Communities Attribute > >Each OSPFv3 Instance within a VRF MUST have a Domain ID. The Domain >ID is configured per OSPFv3 Instance. The OSPFv3 Domain ID is a >6-byte number, and its default value is 0. This attribute has a >2-byte type field, encoded with a value of 0x0005, 0x0105, or 0x0205. > > 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 Value |Domain Identifier | >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >| Domain Identifier Cont. | >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > The OSPF Domain Identifier Extended Communities Attribute > > Thanks & Regards, > Rajesh > > > > ___ > Lsr mailing list > Lsr@ietf.org <mailto:Lsr@ietf.org> > https://www.ietf.org/mailman/listinfo/lsr > <https://www.ietf.org/mailman/listinfo/lsr> ___ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
Re: [Lsr] Regarding OSPFv3 VPN Domain Type
Hi Rajesh, This is the extended community type and RFC 6565 really should have had some references for this - It took me a good 15-20 minutes to recall all the details. The first octet specifies the extended community type of domain ID as defined in https://www.rfc-editor.org/rfc/rfc7153.html#section-5.1.1 TYPE VALUE NAME 0x00 Transitive Two-Octet AS-Specific Extended Community (Sub-Types are defined in the "Transitive Two-Octet AS-Specific Extended Community Sub-Types" registry) 0x01 Transitive IPv4-Address-Specific Extended Community (Sub-Types are defined in the "Transitive IPv4-Address-Specific Extended Community Sub-Types" registry) 0x02 Transitive Four-Octet AS-Specific Extended Community (Sub-Types are defined in the "Transitive Four-Octet AS-Specific Extended Community Sub-Types" registry) The second octet (0x05) is the registered sub-type value for the OSPF Domain Identifier. See https://www.rfc-editor.org/rfc/rfc4577.html#page-10. Hope this helps, Acee From: Lsr on behalf of Rajesh M Date: Friday, September 17, 2021 at 5:44 AM To: "lsr@ietf.org" Subject: [Lsr] Regarding OSPFv3 VPN Domain Type Hi All, For OSPFv3 from RFC 6565, section 4.4, it is mentioned that 2-byte type field in the attribute. May I know what three different types 0x0005, 0x0105 0x0205 represent? OSPF Domain Identifier Extended Communities Attribute Each OSPFv3 Instance within a VRF MUST have a Domain ID. The Domain ID is configured per OSPFv3 Instance. The OSPFv3 Domain ID is a 6-byte number, and its default value is 0. This attribute has a 2-byte type field, encoded with a value of 0x0005, 0x0105, or 0x0205. 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 Value |Domain Identifier | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Domain Identifier Cont. | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The OSPF Domain Identifier Extended Communities Attribute Thanks & Regards, Rajesh ___ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
[Lsr] Regarding OSPFv3 VPN Domain Type
Hi All, For OSPFv3 from RFC 6565, section 4.4, it is mentioned that 2-byte type field in the attribute. May I know what three different types 0x0005, 0x0105 0x0205 represent? OSPF Domain Identifier Extended Communities Attribute Each OSPFv3 Instance within a VRF MUST have a Domain ID. The Domain ID is configured per OSPFv3 Instance. The OSPFv3 Domain ID is a 6-byte number, and its default value is 0. *This attribute has a 2-byte type field, encoded with a value of 0x0005, 0x0105, or 0x0205.* 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 Value |Domain Identifier | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Domain Identifier Cont. | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The OSPF Domain Identifier Extended Communities Attribute Thanks & Regards, Rajesh ___ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
