RE: I-D Action: draft-ietf-l2vpn-evpn-05.txt

[Duwenhua <[e-mail]>]

> Dear Authors,
>      Please see my comments inline.
> 6.1 VLAN Based Service Interface
>    translation for frames destined to its attached CEs. In such
>    scenarios, the Ethernet frames transported over MPLS/IP network
>    SHOULD remain tagged with the originating VID and a VID translation
>    MUST be supported in the data path and MUST be performed on the
>    disposition PE. The Ethernet Tag Identifier in all EVPN routes MUST
>    be set to 0.
     [Du Wenhua] Problem: 1)It will be confused for the disposition PE to received different originating VIDs from different remote PEs; 
                       2)Originating has no use to disposition PE(or egress PE); 
     Suggestion:  translating to normalized tag on imposition PE and translating to local tag on disposition PE.
 
> 
> 9.2.1. Constructing the BGP EVPN MAC/IP Address Advertisement
> 
>    The MAC address length field is in bits and it is typically set to
>    48. However this specification enables specifying the MAC address as
>    a prefix; in which case, the MAC address length field is set to the
>    length of the prefix. This provides the ability to aggregate MAC
>    addresses if the deployment environment supports that.  The encoding
      [Du Wenhua] Problem: 1) It is not easy for DC PE to support MAC prefix. MAC lookup is handled by Hash method instead of by TCAM , 
                           especially when MAC table has more than 1M entries in DC.
                         2) MAC prefix has little use when considering about MAC move in DC.
     Suggestion: Would you please remove MAC prefix? 
                                                           Du Wenhua


> -----Original Message-----
> From: L2vpn [mailto:[e-mail]] On Behalf Of
> [e-mail]
> Sent: Friday, February 14, 2014 8:11 AM
> To: [e-mail]
> Cc: [e-mail]
> Subject: I-D Action: draft-ietf-l2vpn-evpn-05.txt
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>  This draft is a work item of the Layer 2 Virtual Private Networks Working
> Group of the IETF.
> 
>         Title           : BGP MPLS Based Ethernet VPN
>         Authors         : Ali Sajassi
>                           Rahul Aggarwal
>                           Wim Henderickx
>                           Aldrin Isaac
>                           James Uttaro
> 	Filename        : draft-ietf-l2vpn-evpn-05.txt
> 	Pages           : 49
> 	Date            : 2014-02-13
> 
> Abstract:
>    This document describes procedures for BGP MPLS based Ethernet VPNs
>    (EVPN).
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-l2vpn-evpn/
> 
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-l2vpn-evpn-05
> 
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-ietf-l2vpn-evpn-05
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/