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Status: Verified (1)

RFC 7432, "BGP MPLS-Based Ethernet VPN", February 2015

Source of RFC: l2vpn (rtg)

Errata ID: 5554
Status: Verified
Type: Technical

Reported By: Ali Sajassi
Date Reported: 2018-11-16
Verifier Name: Martin Vigoureux
Date Verified: 2018-11-27

Section 7 says:

Clarifications to following sub-sections:
Section 7.1
Section 7.2
Section 7.5

It should say:

Section 7.1:
Add below text to the section 7.1 regarding the encoding
of MPLS label field:

"The value of the 20-bit MPLS label is encoded in the high-order 
20 bits of the 3 octets MPLS Label field."

Section 7.2:
Add below text to the section 7.2 regarding the encoding 
of both the MPLS label fields:

"The value of the 20-bit MPLS label is encoded in the high-order
20 bits of the 3 octets MPLS Label1 and MPLS Label2 fields."

Section 7.5:
Add below text to the section 7.5 regarding the encoding of 
ESI Label field:

"The value of the 20-bit MPLS label is encoded in the high-order
20 bits of the 3 octets ESI Label field."

Notes:

MPLS label is a 20-bit value and is stored in a 3 bytes field in a packet.
The 20-bit MPLS label value is generally stored in higher order 20 bits
of the 3 octet label field. The exact encoding to be followed for storing
MPLS label values are not explicitly mentioned in the RFC 7432 under
section 7.1, 7.2 and 7.5 for different types of EVPN routes. This lead to
ambiguity in different implementations. Hence a clarification is required.

Status: Held for Document Update (1)

RFC 7432, "BGP MPLS-Based Ethernet VPN", February 2015

Source of RFC: l2vpn (rtg)

Errata ID: 4428
Status: Held for Document Update
Type: Editorial

Reported By: Wenhu Lu
Date Reported: 2015-07-27
Held for Document Update by: Alvaro Retana
Date Held: 2015-07-27

Section TOC says:

Route Distinguisher Assignment per EVI

It should say:

Route Distinguisher Assignment per MAC-VRF

Notes:

In the Table of Contents, the line for section 7.9. is incorrect and does not reflect the actual section title on page 18.

Status: Rejected (1)

RFC 7432, "BGP MPLS-Based Ethernet VPN", February 2015

Source of RFC: l2vpn (rtg)

Errata ID: 5523
Status: Rejected
Type: Technical

Reported By: Krishnamoorthy Arumugham
Date Reported: 2018-10-12
Rejected by: Deborah Brungard
Date Rejected: 2018-10-25

Section 7 says:

Clarifications to following sub-sections:
Section 7.1
Section 7.2
Section 7.5

It should say:

Section 7.1:
Add below text to the section 7.1 regarding the encoding 
of MPLS label:

"The value of the 20-bit MPLS label is encoded in the 
high-order 20 bits of the 3 bytes MPLS Label field."

Section 7.2:
Add below text to the section 7.2 regarding the encoding
of both the MPLS label fields:

"The value of the 20-bit MPLS label is encoded in the 
high-order 20 bits of the 3 bytes MPLS Label field for
both MPLS Label1 and MPLS Label2."

Section 7.5:
Add below text to the section 7.5 regarding the encoding
of ESI Label fields:

"The value of the 20-bit MPLS label is encoded in the 
high-order 20 bits of the ESI Label field."

Notes:

MPLS label is a 20-bit value and is stored in a 3 bytes field in a packet. The 20-bit MPLS label value is generally stored in higher order 20 bits of the 3 byte label field. The exact encoding to be followed for storing MPLS label values are not explicitly mentioned in the RFC 7432 under section 7.1, 7.2 and 7.5 for different types of EVPN routes. This lead to ambiguity in different implementations. Hence a clarification is required.
--VERIFIER NOTES--
The ESI label is required to be a "valid MPLS label value", there is no reason to interpret that it should be different from Label 1 and Label 2. There is nothing technically wrong with what is currently in the RFC.

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