14-10-2010, 09:43 PM
This article is presented by:
Gautham Pamu
CS590F - Design of MultiService Networks
Goals of MPLS
Scalability of network layer routing.
Using labels as a means to aggregate forwarding information,while working in the presence of routing hierarchies.
Greater flexibility in delivering routing services.
Using labels to identify particular traffic which are to receive special services, e.G. QoS.
Increased performance.
Using the label-swapping paradigm to optimize network performance.
Goals of MPLS
Simplify integration of routers with cell switching based technologies.
Making cell switches behave as routers.
By making information about physical topology available to network layer routing procedures.
Motivation Behind MPLS
MPLS improves internet scalability by eliminating the need for each router and switch in a packet's path to perform traditionally redundant address lookups and route calculation.
Improves scalability through better traffic engineering.
MPLS also permits explicit backbone routing, which specifies in advance the hops that a packet will take across the network.
This should allow more deterministic, or predictable, performance that can be used to guarantee QoS.
Introduction to MPLS
These paths function at layer 3 or can even be mapped directly to layer 2 transport such as ATM or frame relay.
Explicit routing will give IP traffic a semblance of end-to-end connections over the backbone.
The MPLS definition of IP QoS parameters is limited.
Out of 32 bits total, an MPLS label reserves just three bits for specifying QoS.
For more information about this article,please follow the link:
http://googleurl?sa=t&source=web&cd=1&ve...2Fmpls.ppt&ei=Dii3TK7sNo3-vQPTrNjsCA&usg=AFQjCNH2-bAulEr1Ypte-vITkZPMG_y-Mw
Gautham Pamu
MPLS Architecture
CS590F - Design of MultiService Networks
Goals of MPLS
Scalability of network layer routing.
Using labels as a means to aggregate forwarding information,while working in the presence of routing hierarchies.
Greater flexibility in delivering routing services.
Using labels to identify particular traffic which are to receive special services, e.G. QoS.
Increased performance.
Using the label-swapping paradigm to optimize network performance.
Goals of MPLS
Simplify integration of routers with cell switching based technologies.
Making cell switches behave as routers.
By making information about physical topology available to network layer routing procedures.
Motivation Behind MPLS
MPLS improves internet scalability by eliminating the need for each router and switch in a packet's path to perform traditionally redundant address lookups and route calculation.
Improves scalability through better traffic engineering.
MPLS also permits explicit backbone routing, which specifies in advance the hops that a packet will take across the network.
This should allow more deterministic, or predictable, performance that can be used to guarantee QoS.
Introduction to MPLS
These paths function at layer 3 or can even be mapped directly to layer 2 transport such as ATM or frame relay.
Explicit routing will give IP traffic a semblance of end-to-end connections over the backbone.
The MPLS definition of IP QoS parameters is limited.
Out of 32 bits total, an MPLS label reserves just three bits for specifying QoS.
For more information about this article,please follow the link:
http://googleurl?sa=t&source=web&cd=1&ve...2Fmpls.ppt&ei=Dii3TK7sNo3-vQPTrNjsCA&usg=AFQjCNH2-bAulEr1Ypte-vITkZPMG_y-Mw
