draft-ietf-bess-evpn-vpws-fxc-02.txt   draft-ietf-bess-evpn-vpws-fxc-03.txt 
BESS Working Group A. Sajassi, Ed. BESS Working Group A. Sajassi, Ed.
Internet-Draft P. Brissette Internet-Draft P. Brissette
Intended status: Standards Track Cisco Systems Intended status: Standards Track Cisco Systems
Expires: March 12, 2021 J. Uttaro Expires: December 9, 2021 J. Uttaro
AT&T AT&T
J. Drake J. Drake
Juniper Networks Juniper Networks
S. Boutros S. Boutros
Ciena Ciena
J. Rabadan J. Rabadan
Nokia Nokia
September 8, 2020 June 7, 2021
EVPN VPWS Flexible Cross-Connect Service EVPN VPWS Flexible Cross-Connect Service
draft-ietf-bess-evpn-vpws-fxc-02 draft-ietf-bess-evpn-vpws-fxc-03
Abstract Abstract
This document describes a new EVPN VPWS service type specifically for This document describes a new EVPN VPWS service type specifically for
multiplexing multiple attachment circuits across different Ethernet multiplexing multiple attachment circuits across different Ethernet
Segments and physical interfaces into a single EVPN VPWS service Segments and physical interfaces into a single EVPN VPWS service
tunnel and still providing Single-Active and All-Active multi-homing. tunnel and still providing Single-Active and All-Active multi-homing.
This new service is referred to as flexible cross-connect service. This new service is referred to as flexible cross-connect service.
After a description of the rationale for this new service type, the After a description of the rationale for this new service type, the
solution to deliver such service is detailed. solution to deliver such service is detailed.
skipping to change at page 1, line 44 skipping to change at page 1, line 44
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 12, 2021. This Internet-Draft will expire on December 9, 2021.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
skipping to change at page 10, line 44 skipping to change at page 10, line 44
(12-bits) yet dataplane is operating based double tags, the VID (12-bits) yet dataplane is operating based double tags, the VID
normalisation applies only to outer tag. If double VID normalisation normalisation applies only to outer tag. If double VID normalisation
is signaled in the Ethernet Tag ID field (24-bits), VID normalisation is signaled in the Ethernet Tag ID field (24-bits), VID normalisation
applies to both inner and outer tags. applies to both inner and outer tags.
4. BGP Extensions 4. BGP Extensions
This draft uses the EVPN Layer-2 attribute extended community defined This draft uses the EVPN Layer-2 attribute extended community defined
in [RFC8214] with two additional flags added to this EC as described in [RFC8214] with two additional flags added to this EC as described
below. This EC is sent with Ethernet A-D per EVI route per below. This EC is sent with Ethernet A-D per EVI route per
Section 3, and SHALL be sent for Single-Active and MAY be sent for Section 3, and SHOULD be sent for Single-Active and All-Active
All-Active redundancy mode . redundancy modes.
+-------------------------------------------+ +-------------------------------------------+
| Type (0x06) / Sub-type (0x04) (2 octets) | | Type (0x06) / Sub-type (0x04) (2 octets) |
+-------------------------------------------+ +-------------------------------------------+
| Control Flags (2 octets) | | Control Flags (2 octets) |
+-------------------------------------------+ +-------------------------------------------+
| L2 MTU (2 octets) | | L2 MTU (2 octets) |
+-------------------------------------------+ +-------------------------------------------+
| Reserved (2 octets) | | Reserved (2 octets) |
+-------------------------------------------+ +-------------------------------------------+
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
The following bits in the Control Flags are defined; the remaining The following bits in the Control Flags are defined; the remaining
bits MUST be set to zero when sending and MUST be ignored when bits MUST be set to zero when sending and MUST be ignored when
receiving this community. receiving this community.
Name Meaning Name Meaning
--------------------------------------------------------------- ---------------------------------------------------------------
B,P,C per definition in [RFC8214] B,P,C per definition in [RFC8214]
- reserved for Flow-label (RFC7432-bis) - reserved for Flow-label (draft-ietf-bess-rfc7432bis)
M 00 mode of operation as defined in [RFC8214] M 00 mode of operation as defined in [RFC8214]
01 VLAN-Signaled FXC 01 VLAN-Signaled FXC
10 Default FXC 10 Default FXC
V 00 operating per [RFC8214] V 00 operating per [RFC8214]
01 single-VID normalization 01 single-VID normalization
10 double-VID normalization 10 double-VID normalization
The M and V fields are OPTIONAL. The M field is ignored at reception The M and V fields are OPTIONAL. The M field is ignored at reception
skipping to change at page 15, line 26 skipping to change at page 15, line 26
Ethernet VPN", RFC 7432, DOI 10.17487/RFC7432, February Ethernet VPN", RFC 7432, DOI 10.17487/RFC7432, February
2015, <https://www.rfc-editor.org/info/rfc7432>. 2015, <https://www.rfc-editor.org/info/rfc7432>.
[RFC8214] Boutros, S., Sajassi, A., Salam, S., Drake, J., and J. [RFC8214] Boutros, S., Sajassi, A., Salam, S., Drake, J., and J.
Rabadan, "Virtual Private Wire Service Support in Ethernet Rabadan, "Virtual Private Wire Service Support in Ethernet
VPN", RFC 8214, DOI 10.17487/RFC8214, August 2017, VPN", RFC 8214, DOI 10.17487/RFC8214, August 2017,
<https://www.rfc-editor.org/info/rfc8214>. <https://www.rfc-editor.org/info/rfc8214>.
8.2. Informative References 8.2. Informative References
[I-D.ietf-bess-rfc7432bis]
Sajassi, A., Drake, J., and J. Rabadan, "BGP MPLS-Based
Ethernet VPN", draft-ietf-bess-rfc7432bis-00 (work in
progress), December 2020.
[I-D.ietf-rtgwg-bgp-pic] [I-D.ietf-rtgwg-bgp-pic]
Bashandy, A., Filsfils, C., and P. Mohapatra, "BGP Prefix Bashandy, A., Filsfils, C., and P. Mohapatra, "BGP Prefix
Independent Convergence", draft-ietf-rtgwg-bgp-pic-11 Independent Convergence", draft-ietf-rtgwg-bgp-pic-11
(work in progress), February 2020. (work in progress), February 2020.
[RFC8365] Sajassi, A., Ed., Drake, J., Ed., Bitar, N., Shekhar, R., [RFC8365] Sajassi, A., Ed., Drake, J., Ed., Bitar, N., Shekhar, R.,
Uttaro, J., and W. Henderickx, "A Network Virtualization Uttaro, J., and W. Henderickx, "A Network Virtualization
Overlay Solution Using Ethernet VPN (EVPN)", RFC 8365, Overlay Solution Using Ethernet VPN (EVPN)", RFC 8365,
DOI 10.17487/RFC8365, March 2018, DOI 10.17487/RFC8365, March 2018,
<https://www.rfc-editor.org/info/rfc8365>. <https://www.rfc-editor.org/info/rfc8365>.
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