Re: [rrg] Locator

[[e-mail]]

In einer eMail vom 13.05.2009 02:13:52 Westeuropäische Normalzeit schreibt  
[e-mail]:

Ah, no.  To quote RFC-1992:

"A locator ... identifies a location in an  internetwork.  Nodes and 
endpoint
are assigned locators.  Different nodes have necessarily different locators.
A node is  assigned only one locator. Locators identify nodes and specify
*where* a node is in the network. Locators do *not* specify a path to  the
node."
 
I perfectly agree."Nodes and endpoint are assigned locators" can also be  
read: "Nodes and endpoints are assigned attributes (eventually in addition  
?! to identifiers ) which are locators.



One also needs to be aware that in this document, "node" means  'network
region', not 'host/router', as it is commonly taken to mean in  networking:

"A node represents a region of the physical  network.  The region of the
network represented by a node  can be as large or as small as desired: a
node can represent a  continent or a process running inside a host.
Moreover .. a  region of the network can simultaneously be represented by
more than one node."
I perfectly agree. However I would like to caution not to do the same  kind 
of node aggregation once again
as known from PNNI.


(In  the next section of the document, "node" is very precisely defined to  
mean
'map element' - from the node/arc terminology of graph theory, since  maps 
are
graphs - the above is just a 'starter  definition'.)
it sounds like TARA :-)
 
Heiner