Transcript MAL - MPLS Adatation Layer

MAL
MPLS
Adaptation
Layer
SG13 – futures session
25 July 2003
Yaakov (J) Stein
MAL
Slide 1
Q5 Service Interworking
Brainstorming
MAL is a BAD name for this talk
it is about Service Interworking
Temporary new definition of SI (broader than Y.1401 definition)
CONSTRUCTION OF ROBUST CLIENT CONNECTIVITY
FROM A CONCATENATION OF SUBNETWORKS
OF DISSIMILAR TECHNOLOGIES
WHILE PRESERVING KEY SERVICE ATTRIBUTES
MAL
Slide 2
Focus on MPLS
MPLS benefits from experience
with ATM, SDH, FR, Ethernet, IP, etc.
Many of us believe that MPLS will last forever
or for 10 years, whichever comes first
We don’t yet sell an MPLS service
and we don’t want to
MAL
Slide 3
Coexistence & Migration
user services
ATM
SDH
services sold
interface
FR
IP
user services
MPLS
MAL
Slide 4
Traffic Types
Real-time constant rate
Real-time variable rate
Non-real-time packet
MAL
Slide 5
Matching
Traffic to network
Network-specific interfaces increase interworking complexity
Not equally easy to put traffic types on networks
For example:
– RT constant-rate on SDH easy
– RT constant-rate on ATM harder
– RT constant-rate on MPLS challenging
MAL
Slide 6
MAL
To facilitate co-existence and migration to MPLS
define a single interface per traffic type

MAL-0 type agnostic

MAL-C for real-time constant rate

MAL-V for real-time variable rate

MAL-P for non-real-time packet
MAL
Slide 7