MPLS cisco QOS VPN full MPLS

宽宽宽宽宽宽宽宽宽宽
多多多多多多多 MPLS

多多多多多
多多多多多多多多多多多多多
多多多多多

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宽宽
 宽宽宽 MPLS?
 宽宽宽宽 MPLS?
 MPLS 宽宽
MPLS 宽宽
 MPLS 宽宽宽宽
 MPLS 宽宽宽宽宽宽宽宽宽宽


 MPLS 宽宽宽
 MPLS 宽宽宽宽宽宽
 宽宽宽宽宽 MPLS 宽宽宽宽宽宽宽
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽
 宽宽宽 MPLS?
 宽宽宽宽 MPLS?
 MPLS 宽宽

MPLS 宽宽
 MPLS 宽宽宽宽
 MPLS 宽宽宽宽宽宽宽宽宽宽


 MPLS 宽宽宽
 MPLS 宽宽宽宽宽宽
 宽宽宽宽宽 MPLS 宽宽宽宽宽宽宽
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽 MPLS?
 宽宽宽宽宽宽宽宽 MultiProtocol Label

Switching 宽宽宽
 宽宽宽宽宽 switching 宽宽宽 routing
 宽宽宽宽宽宽宽宽宽宽宽
 宽 IP 宽宽宽宽宽宽宽宽宽宽宽
 宽宽宽宽宽宽宽宽 Internet 宽宽

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽 MPLS?
 IETF MPLS Working Group-1997
 “No MPLS standards body yet”
 IETF MPLS Working Group 宽宽






多多多多多
多多多多多多
多多多多多多多
多多多多 - DiffServe

 MPLS Forum 宽宽


多多 MPLS 多多多多多多多多多多多多



多多 MPLS 多多多多 , 多多多多多多多多多 MPLS 多多 , 多多多 MPLS
多多多多多多多多多多多多多

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽 MPLS?
 MPLS… 宽宽宽宽宽宽 ?

+

=
?

Router

LSR

+

=

ATM
Switch

ATM
LSR
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ATM Switch -> Core Switch
OSPF

IS-IS

Connection-based
Interfaces

Increase
Speed &
Efficiency

MPLS

Connection
Switching Fabric

+ Traffic Mgmt

Add
Protocol
Interfaces

PNNI

Capacity Aware
Routing Engine +
Connection Control

UNI

PNNI

UNI

Protocol Interfaces

Protocol Interfaces
Capacity Aware
Routing Engine +
Connection Control
Connection
Switching Fabric
+ Traffic Mgmt
Connection-based
Interfaces

Frame

MPLS

Cell

Cell

Copyright Marconi Communications Limited. All Rights Reserved.


Router -> Core Switch

Connectionless
Interfaces

New Fabric

OSPF

Switching
Fabric

IS-IS

Enhance
Routing Engine

MPLS

Next Hop
Routing Engine

PNNI

UNI

OSPF

IS-IS

Protocol Interfaces

Add
Protocol
Interfaces

Protocol Interfaces
Capacity Aware
Routing Engine +
Connection Control
Connection
Switching Fabric
+ Traffic Mgmt
Connection-based
Interfaces

Frame

MPLS

Cell

LAN

Frame

PPP

Cell

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽 MPLS?
 宽宽宽宽宽“宽宽宽宽”宽 Ships In The

Night 宽 SIN 宽宽宽宽宽
Thinks that
it's a router...
…and an
LSR!

• If there's a label, behave as an LSR.
• If there's no label, behave as a router.
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽 MPLS?
 ATM 宽宽宽宽宽“宽宽宽宽”宽宽宽宽

MPLS Circuit
•Unlabeled- Router

Acts as
router...

•Labeled- LSR

ATM Circuit

Acts as ATM
LSR...

•Seamless
…or ATM
Switch

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽
 宽宽宽 MPLS?
 宽宽宽宽 MPLS?
 MPLS 宽宽
MPLS 宽宽
 MPLS 宽宽宽宽
 MPLS 宽宽宽宽宽宽宽宽宽宽


 MPLS 宽宽宽

 MPLS 宽宽宽宽宽宽
 宽宽宽宽宽 MPLS 宽宽宽宽宽宽宽
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽宽 MPLS?… Internet
 Internet 宽宽宽宽宽宽宽
 宽宽宽 2 宽宽宽… 10 宽宽宽宽宽 20 宽
 宽宽宽宽宽宽宽宽宽 nkbps 宽宽 >2Mbits
 Best effort + Class of Service +

Quality of service = 宽宽宽宽宽
 宽宽宽宽宽宽宽 5 - 10 宽宽宽宽 100 - 1000 宽

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽宽宽宽宽宽宽宽
Voice Services
$180B

Cable TV
$27B

Private Line
$11B

F R/ATM
$6.5B

Copyright Marconi Communications Limited. All Rights Reserved.

Internet
$3B


The Internet (Pre-1995)
 宽宽宽宽宽宽

IP

IP

IP

IP

Service
1.5Mbps to
45Mbps

SONET/SDH

Copyright Marconi Communications Limited. All Rights Reserved.

Transmission


宽宽宽宽
 IP 宽宽宽宽宽宽宽宽宽宽

R1
R3
R2
R1 、 R3 、、、、、
R2 、 R3 、、、、、
Copyright Marconi Communications Limited. All Rights Reserved.

” 、“、、、、、、、、


宽宽宽宽
 宽宽 - 宽宽宽宽宽
 宽宽宽宽宽宽宽

 宽宽宽宽


Network Engineering & Traffic
Engineering

Copyright Marconi Communications Limited. All Rights Reserved.


The Internet (Circa1995+)
 宽宽宽宽宽宽

IP

IP

IP

ATM

IP

ATM

SONET/SDH

Copyright Marconi Communications Limited. All Rights Reserved.

Service

Network
Engineering

Transmission


宽宽宽宽
Traffic Engineering

 ATM 宽宽宽宽宽宽宽宽宽宽宽
R1
R3
R2

R1 、 R3 、、、 PVC

R2 、 R3 、、、 PVC
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽宽宽
The New Generation Public Network

 ATM 宽宽宽宽宽宽宽…宽宽宽宽宽宽宽宽
 宽宽宽宽宽
Traffic Engineering, Differentiated
Services 宽 revenue potential
 宽宽宽宽宽 ATM 宽宽宽宽宽宽宽宽宽宽宽宽 MPLS
宽宽


Copyright Marconi Communications Limited. All Rights Reserved.


宽宽
 宽宽宽 MPLS?
 宽宽宽宽 MPLS?
 MPLS 宽宽
MPLS 宽宽
 MPLS 宽宽宽宽
 MPLS 宽宽宽宽宽宽宽宽宽宽


 MPLS 宽宽宽
 MPLS 宽宽宽宽宽宽
 宽宽宽宽宽 MPLS 宽宽宽宽宽宽宽

Copyright Marconi Communications Limited. All Rights Reserved.


MPLS 宽宽
 Label
 Label Switch Router (LSR)
 Label Switch Path (LSP)
 Label Information Base (LIB)
 Label Distribution Protocol (LDP)
 Traffic Engineering via Explicit

Routing



Constraint-Based LDP (CR-LDP)
RSVP for Traffic Engineering (RSVP-TE)
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽
Label
 宽宽 - 宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽

宽 stream
 Stream - 宽宽宽宽宽 flows 宽宽宽
 宽宽宽宽宽宽宽 longest prefix match 宽宽

宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽

Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽宽宽宽宽
Label Switch Router
 宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽宽


宽宽宽宽宽宽宽宽宽宽宽宽宽宽 “宽”宽宽宽宽宽宽

宽宽宽宽宽宽 LSR
ATM LSR
Copyright Marconi Communications Limited. All Rights Reserved.


宽宽宽宽宽宽
Label Switch Path
 The path followed by packets that

have the same label!

IP Source
Network

IP Destination
Network

The Internet

Copyright Marconi Communications Limited. All Rights Reserved.

宽宽宽宽宽
Label Information Base (LIB)
 Table where a label ID is associated

with an outbound port
IP Source
Network

Label (In)

IP Destination
Network

Label (Out)

O/P Port

12

766

Ser_1

308

5

Ser_2

The Internet

Copyright Marconi Communications Limited. All Rights Reserved.