Dear WG:

As mentioned in July [1] and discussed in Vancouver [2], we have
started the process to recharter the WG.  This email starts a two-week
call for comments on the updated charter until EOD on September 18,
2024.

Once this call for comments is over, we will let our AD handle the process.

I have pasted the proposed charter below.  I am also attaching a set
of diffs with respect to the current charter.

We intend to manage the WG based on milestones.  IOW, the plan is not
to list specific work items in the charter text.  Nonetheless, we will
include specific milestones reflecting the current/adopted work.


Please take a look (below) and reply with comments or proposed text.

Thanks!

Alvaro (for spring-chairs)


[1] https://mailarchive.ietf.org/arch/msg/spring/xebGJFcbxpv44q06y81gEpHXH-w/

[2] 
https://datatracker.ietf.org/doc/minutes-120-spring-202407262000/#1300-spring-status---chairs-15-mins


===== Proposed Charter =====

The Source Packet Routing in NetworkinG (SPRING) Working Group is the
home of Segment Routing (SR) using MPLS (SR-MPLS) and IPv6 (SRv6).
The SPRING WG is responsible for defining new applications and
specifying extensions of Segment Routing technologies. It also serves
as a forum to discuss SR-MPLS network operations.

The work in the SPRING WG should avoid modification to existing data
planes that would make them incompatible with existing deployments.
Where possible, existing control and management plane protocols must
be used within existing architectures to implement the SPRING
function. Any modification of -or extension to- existing
architectures, data planes, or control or management plane protocols
should be carried out in the WGs responsible for the architecture,
data plane, or control or management plane protocol being modified
and in coordination with the SPRING WG, but may be done in SPRING WG
after agreement with all the relevant WG chairs and responsible Area
Directors.

The SPRING WG defines procedures that allow an SR node to steer a packet
through an SR Policy instantiated as an ordered list of instructions
called segments without needing per-path state information at transit
nodes. A network comprising only SR nodes can achieve full path
control (through loose or strict path specification). However, SR
nodes must interoperate through loose routing in existing networks.

By default, Segment Routing operates within a trusted domain and
requires the enforcement of a strict boundary to prevent Segment
Routing packets from entering the trusted domain [rfc8402]. Some
deployments may involve multiple trusted domains and the use of
cross/inter-domain segments. Documents which deal with such
situations need to include a risk analysis and use mechanisms to
validate that the segment list is provided by an authorized entity
and has not been modified in transit.

The SPRING WG will manage its specific work items and milestones
based on WG engagement and successful adoption.

The SPRING WG will coordinate and collaborate with other WGs as
needed. Specific expected interactions include (but may not be
limited to):

mpls on the MPLS data plane and associated extensions
6man on the IPv6 data plane and associated extensions
lsr on OSPF and IS-IS extensions
idr on BGP extensions
bess on VPN control plane
pce on extensions for centralized solutions
teas on traffic engineering architecture
rtgwg on fast-reroute technologies
srv6ops on SRv6 operations

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