Re: [RRG] On the Transitionability of LISP

[marcelo bagnulo braun <marcelo@it.uc3m.es>]

El 02/08/2007, a las 11:48, Robin Whittle escribió:


>              SHIM6  Six/  Mobile  LISP-   LISP-   eFIT-  Ivip
>                     One   IPv6    NERD    CONS    APT	
>
> Address
> portability                       Y       Y       Y      Y
>
> Multihoming   Y     Y             Y       Y       Y      Y
>
> Mobility                  Y                              Y*
>
> IPv4 too                          Y       Y       Y      Y
>
> No host                           Y       Y       Y      Y*
> changes

Just to point out that:

Shim6 can support address portability, if you use portable  
identifiers, such as ULAs. No need to change anything in the shim6  
specs to support that

Shim6 can be used as a RO mechanism for mobility, (it does not  
provides mobility anchor point capabilities, though)

Shim6 can easily support v4 locators (but not v4 identifiers) (the  
NAT traversal capabilities would need to be worked out, but we are  
discussing about that)

I don't know what kind of problem being solved is "No host changed"  
though... why didn't you include a line about "No router changes"? ;-)

However, the main limitation of shim6 is about traffic engineering,  
that you seem to have missed. Shim6 do provides host enforced TE  
capabilities, but does not provides router enforced TE capabilitis,  
which seems to be a desired feature. (OTOH, Six/One seems to provide  
exactly that complementing Shim6)

Regards, marcelo


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