Developing an optimum Design for Layer 3
From Teknologisk videncenter
Kapitel 3 fra CCDP ARCH bogen.
This article is under development....
Contents
At designe avancerede IP adresserings løsninger
NAT
Content Load-Balancing Device
En enhed der fordeler belastningen mellem flere Servere. For eksempel en enhed der fordeler forespørgsler fra WEB-brugere mellem ti identiske WEB-servere. Det kan være baseret på forskellige faktorer
- Antallet af forbindelser til hver server
- CPU belastning på Serverne
- En kombination af flere faktorer der beskriver servernes belastning
For eksempel Cisco CSS 11500 Series Content Services Switch
Designing avanceret Routning
Route Summarization og Default Routing
Designing Scalable OSPF Design
OSPF Scalability best practise
- Any one Router should have no more than 60 adjacent neighbors
- An area should have no more than 50 Routers
- Any one Router should not be in mothe than three areas
- Already heavily loaded Routers should not be DR and BDR
Designing Areas
Network topology and addressing should be designed initially with division of areas in mind.
General advice about OSPF design is:
- Minimize the routing information advertised into and out of the area.
- Experience shows that you should be conservative about adding routers to the backbone area.
- Make it simple
- Make nonbackbone areas stub or totally stubby areas
- Make it summarized
OSPF Hierachy
