Re: [Bier] I-D Action: draft-ietf-bier-mpls-encapsulation-11.txt

[Eric C Rosen <[e-mail]>]

This revision has added text at the beginning of Section 3 to address 
(hopefully) Mirja Kuehlewind's DISCUSS regarding the MTU.

The section on TTL processing in Section 2.1.1.2 has been revised to 
address (hopefully) Warren Kumari's DISCUSS regarding TTL processing.

The TTL section has also been revised to clarify that:

- a packet that arrives at a given BFR with incoming TTL of 1 may be 
both a valid packet for BFER processing and an expired packet for 
forwarding;

- a packet with that arrives at a given BFR with an incoming TTL of 1 is 
only considered to be an expired packet for forwarding if it has a bit 
set in its BitString that identifies some other BFR.

Much of the text on TTL in section 2.2.1.2 has been removed and replaced 
with a reference to the corresponding material in section 2.1.1.2.


On 10/25/2017 10:34 AM, [e-mail] wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Bit Indexed Explicit Replication WG of the IETF.
>
>          Title           : Encapsulation for Bit Index Explicit Replication in MPLS and non-MPLS Networks
>          Authors         : IJsbrand Wijnands
>                            Eric C. Rosen
>                            Andrew Dolganow
>                            Jeff Tantsura
>                            Sam K Aldrin
>                            Israel Meilik
> 	Filename        : draft-ietf-bier-mpls-encapsulation-11.txt
> 	Pages           : 21
> 	Date            : 2017-10-25
>
> Abstract:
>     Bit Index Explicit Replication (BIER) is an architecture that
>     provides optimal multicast forwarding through a "multicast domain",
>     without requiring intermediate routers to maintain any per-flow state
>     or to engage in an explicit tree-building protocol.  When a multicast
>     data packet enters the domain, the ingress router determines the set
>     of egress routers to which the packet needs to be sent.  The ingress
>     router then encapsulates the packet in a BIER header.  The BIER
>     header contains a bitstring in which each bit represents exactly one
>     egress router in the domain; to forward the packet to a given set of
>     egress routers, the bits corresponding to those routers are set in
>     the BIER header.  The details of the encapsulation depend on the type
>     of network used to realize the multicast domain.  This document
>     specifies a BIER encapsulation that can be used in an MPLS network,
>     or with slight differences, in a non-MPLS network.
>
>
> The IETF datatracker status page for this draft is:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Dbier-2Dmpls-2Dencapsulation_&d=DwICAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=-DXB84eU9m4cIlq2OOcCJCQQAwJXQQswyu3F0kG0VNo&m=d0DlDe0IWjPkm5oAMdZLEqOzHm2buBezUk5869zmv_Y&s=_5Tglz9u29oibVYIrVJVSRLuLu2noxv_7_PwB2E7ymY&e=
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