Table of Contents
IS-IS Deployment, Design Guidelines and New Features
Agenda
Scope of the Presentation
Why IS-IS ?
Deployment Scenarios
L1-Only POPs
L1-Only POPs (Cont.)
L1-Only POPs (Cont.)
L2-Only POPs (all in the same area)
L2-Only POPs (Each POP in a different area)
L2-Only POPs (Cont.)
L2-Only POPs (Cont.)
L1 in the POP and L2 in the Core
L1 in the POP and L2 in the Core (Cont.)
L1 in the POP and L2 in the Core (Cont.)
Design Considerations
Set Over Load Bit
Set Over Load Bit
Set Over Load Bit (Cont.)
Set Over Load Bit (Cont.)
Set Over Load Bit (Cont.)
LSP Flooding
LSP Flooding (Cont.)
LSP Flooding (Cont.)
LSP Flooding (Cont.)
LSP Generation: What triggers a new LSP
LSP Generation: New LSP
LSP Generation
Exponential Backoff: Enhancements to SPF Algorithms
Exponential Backoff: spf-interval
Exponential Backoff: spf-interval Example
Exponential Backoff: spf-interval Example
Exponential Backoff: prc-interval and lsp-gen-interval
Hello Padding
Hello Padding
Database Timers
Database Timers (Cont.)
Non-Advertisement of Parallel Adjacencies in the LSP
Non-Advertisement of Parallel Adjacencies in the LSP (Cont.)
Non-Advertisement of Parallel Adjacencies in the LSP (Cont.)
New Features
Dynamic Host Name
Dynamic Host Name (Cont.)
Dynamic Host Name (Cont.)
Route Leaking
Route Leaking
Route Leaking
Route Leaking
Route Leaking
Route Leaking
Route Leaking
Route Leaking
Route Leaking (Cont.)
Route Leaking (Cont.)
Extensions for MPLS-TE
Extensions for MPLS-TE
Extensions for MPLS-TE
Extensions for MPLS-TE
Extensions for MPLS-TE
Extensions for MPLS-TE
Fast Hellos
Fast Hellos (Cont.)
dCEF and ISIS
dCEF and ISIS
Route Tags
Route Tags
Route Tags
Route Tags
Route Tags
Route Tags
P2P Adjacencies over Broadcast Media
P2P Adjacencies over Broadcast Media
P2P Adjacencies over Broadcast Media
MPLS-TE Forwarding Adjacencies with IS-IS
MPLS-TE Forwarding Adjacencies with IS-IS
MPLS-TE Forwarding Adjacencies with IS-IS
MPLS-TE Forwarding Adjacencies with IS-IS
Suggested Reading
PPT Slide
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