The MPLS-OPS Archive

[<Nihal.Samaraweera@vf.vodafone.co.uk>]

Please correct me if I am wrong.

An offline or online routing is a way of optimising the network 
resource, by periodically measuring and monitoring the status of
the network.  An online process learns the status of the network
using the additional information provided by the routing protocol.  

The route (e.g., LSP path) computation based on online method will 
not use a deterministic approach, and the path establishment 
depends only on the current state of the network. 

This lack of pre planing capability could be overcome using an 
offline process. An offline optimisation process requires a set 
of monitoring tools (to learn the status of the network), and a 
set of network configuration management tools to compute and 
configure an optimum set of routs (e.g. LSP paths).

Nihal Samaraweera


-----Original Message-----
From: Antoine Bagula [mailto:bagula@cs.sun.ac.za]
Sent: 22 October 2001 10:39
To: mpls-ops@mplsrc.com
Subject: Off-line Versus ON-line routing


Dear All,

I would like to know what is the major difference between off-line and
on-line routing as well as the relative gains and disadvantages of these
two approaches. 

Antoine



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