Table of Contents
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MPLS Guide
Table of Contents
1
1.1
1.1.1
1.1.2
2
3
3.1
3.2
3.2.1
3.2.1.1
3.2.2
3.2.2.1
3.2.3
3.2.3.1
3.2.3.2
3.2.3.3
3.2.3.4
3.2.3.5
3.2.4
3.2.5
3.3
3.3.1
3.3.1.1
3.3.1.2
3.3.1.3
3.3.1.4
3.3.1.5
3.3.2
3.3.2.1
3.3.2.2
3.3.2.3
3.4
3.4.1
3.4.1.1
3.4.1.2
3.4.1.3
3.4.1.4
3.4.1.5
3.4.1.6
3.4.1.7
3.4.1.8
3.5
3HE 18686 AAAB TQZZA
Preface...........................................................................................15
About This Guide.......................................................................................15
Audience....................................................................................................15
Technical Support......................................................................................16
7705 SAR MPLS Configuration Process.....................................17
MPLS and RSVP-TE ......................................................................19
Overview....................................................................................................20
MPLS.........................................................................................................21
Traffic Engineering for MPLS ....................................................................21
TE Metric and IGP Metric ..........................................................................22
MPLS Label Stack .....................................................................................23
Label Values..............................................................................................24
MPLS Entropy Labels................................................................................26
Overview of Entropy Labels.......................................................................26
Inserting and Processing the Entropy Label..............................................29
Entropy Label on OAM Packets ................................................................31
NGE...........................................................................................................31
Entropy Label Configuration ......................................................................31
Label Edge and Label Switch Routers ......................................................33
LSP Types .................................................................................................34
RSVP and RSVP-TE .................................................................................36
RSVP-TE Overview ...................................................................................36
Using RSVP-TE for MPLS.........................................................................38
RSVP-TE Extensions for MPLS ................................................................38
Hello Protocol ............................................................................................39
Authentication............................................................................................40
Non-Router ID Addresses as Destinations and Hops ...............................42
RSVP LSP and LDP FEC Statistics ..........................................................43
Configuring RSVP LSP Statistics at Ingress LER .....................................44
Configuring RSVP LSP Statistics at Egress LER ......................................45
Configuring LDP FEC Statistics.................................................................46
RSVP-TE Signaling ...................................................................................48
General Attributes of RSVP-TE .................................................................48
Bidirectional Forwarding Detection............................................................49
Timers........................................................................................................49
LSP Resignal Limit ....................................................................................50
RSVP-TE Message Pacing .......................................................................50
RSVP-TE Overhead Refresh Reduction ...................................................51
RSVP-TE Reservation Styles ....................................................................52
Implicit Null Label ......................................................................................52
RSVP-TE Entropy Labels ..........................................................................53
LSP Redundancy.......................................................................................54
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