[no subject]

Right. We don't need such details, so, in the seamoby document, we can
make it simpler, as the definition for mobile nodes.

I don't know if the mention "continuous sessions" we have in
draft-nemo is relevant or not in draft-seamoby. To what extent a node
is fixed or mobile ? With respect to its address or only with respect
to its point of attachment ? Should the definition also cover MANET
nodes and thus be general enough ?

Tentatively, I propose the following text for draft-seamoby. Text
between brackets is optional and could be added/removed:

  o Fixed Node (FN)
      A node, either a host or a router, unable to change its point of
      attachment to the network and its IP address [without breaking
      open sessions]

  o Mobile Node (MN) 
      An IP node, either a host or a router, capable of changing its
      point of attachment to the network, moving from one link to
      another link [while maintaining continuous sessions]

  o Mobile Router (MR)
      A router capable of changing its point of attachment to the
      network, moving from one link to another link. The MR is capable
      of forwarding packets between two or more interfaces, and
      possibly running a dynamic routing protocol modifying the state
      by which to do packet forwarding.

      A MR acting as a gateway between an entire mobile network and
      the rest of the Internet has one or more egress interface(s) and
      one or more ingress interface(s). [Packets forwarded upstream to
      the rest of the Internet are transmitted through one of the MR's
      egress interface; packets forwarded downstream to the mobile
      network are transmitted through one of the MR's ingress
      interface.]

  o Mobile Network

      An entire network, moving as a unit, which dynamically changes
      its point of attachment to the Internet and thus its
      reachability in the topology. The mobile network is composed by
      one or more IP-subnets and is connected to the global Internet
      via one or more Mobile Routers (MR). The internal configuration
      of the mobile network is assumed to be relatively stable with
      respect to the MR.

  o Mobile Network Node (MNN)

      Any node (host or router) located within a mobile network,
      either permanently or temporarily. MNNs may either be mobile
      nodes (host or router) or fixed nodes.


  o Ingress interface
      The interface of a MR attached to a link inside the mobile
      network.

  o Egress interface
      The interface of a MR attached to the home link if the MR is at
      home, or attached to a foreign link if the MR is in a foreign
      network.


It would be useful to indicate ingress and egress intefaces on the
figure.


> - The "network mobility" would fit into the section discussing personal 
>   and host mobility, I guess.

Yes.


> - All interface and prefix terms would go into the Mobile Network section 
>   of the Seamoby draft, right? They are mainly (only?) used there?

I think "home subnet prefix" and "foreign subnet prefix" are general
to mobility, not only to network mobility. Moreover, those terms
appear in section 2 of draft-seamoby, thus they should be defined in
section 2.

Thierry


> On Sat, 22 Mar 2003, Thierry Ernst wrote:
> > Thus, for consistency and improvement, I think both drafts should be
> > updated the following way:
> > 
> > draft-seamoby-mmobility-terminology-02.txt
> > - add "fixed node" as opposed to "mobile node"
> > - update definition of mobile router (Seamoby def not the same as NEMO
> >   def)
> > - add network mobility, as opposed to "host mobility"
> > - add egress interface
> > - add ingress interface
> > - add home link prefix
> > - add foreign link prefix
> > 
> > draft-ernst-nemo-terminology-01.txt:
> > - update defintion of mobile network with text in NEMO terminology's
> >   introducion
> > - remove definition of AR
> > - remove or extend definition of mobile network, MR, MNN
> > - move words about "maintain sessions" from definition MN to
> >   definition of LFN, VMN, LMN
> > - remove egress interface
> > - remove ingress interface
> > - remove home subnet prefix
> > - remove foreign subnet prefix
> > - intra-domain mobility
> > - inter-domain mobility

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