[netext] Review of I-D: draft-ietf-netext-update-notifications-03

[Basavaraj Patil <[e-mail]>]

My review of this I-D.

-Raj

Comments:
---------

In order to ensure interoperability, the I-D should state that if an
LMA sends an Update notification to a MAG and does not receive an Ack,
then the MAG may not support the ability to update sessions.
The I-D should specify a backoff mechanism in terms of retransmitting
an update message from the LMA and stop after X number of messages
with no response.

The update notification message could be abused by the introduction of
a vendor specific notification reason. The specification should
mandate the registration of all notification reasons in IANA and not
allow any vendor specific types.



Editorial:

s/ These update notifications are exchanged using a Mobility
   Header message type specifically designed for this purpose./These
   update notifications are exchanged using a new Mobility
   Header message type specifically designed for this purpose.

Comment:

The Introduction starts off as : "In some situations, there is a need
for the local mobility anchor ..."
This is pretty ambiguous. Please rephrase.

s/The base Proxy
   Mobile IPv6 specification does not have a provision for this./ The
   base Proxy Mobile IPv6 specification does not have a provision for
   sending unsolicited informational messages from the LMA to the
   MAG.

s/participation from the mobile node/participation by the mobile node

s/for the mobile node in Mobile IPv6 [RFC6275]/for the mobile node as
specified in Mobile IPv6 [RFC6275]

Q: ID states:
"One such scenario where such a mechanism is needed is when the local
   mobility anchor wants to inform the mobile access gateway that it
   needs to re-register mobility session for a mobile node."

In what scenario would the LMA want to inform the MAG that an MN needs
to be re-registered?

s/and so it can obtain the updated policy/in order to update the
policies associated with the mobility session of an MN.

s/or and updated IPv4/or an updated IPv4


-- 
Basavaraj Patil