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Interior Routing Protocols
The document discusses interior routing protocols and provides an example configuration of OSPF. It introduces interior routing and the types of interior routing protocols. It then describes OSPF as a link-state routing protocol that is commonly used and provides an example network diagram and OSPF configurations for PE and core routers to advertise networks and exchange routing information within an ISP's network.
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Interior Routing Protocols
- 1. Interior Routing Protocols KHNOG Micro-‐Event 30 December 2015 Meun Dol meundol@chuanwei.com.kh
- 2. Agenda • Interior RouEng Overview • Type of Interior RouEng • OSPF RouEng Protocol • OSPF ConfiguraEon
- 3. Interior Routing Overview We are using BGP Protocol between Provider and Customer. ISP Core Network Providers Providers Customers Customers eBGPeBGP eBGP eBGP
- 4. Interior Routing Overview Look inside the Services ISP Core Network Customers Customers Providers Providers Core Router PE PEPE PE OSPF
- 5. Type of InteriorRouting Protocol • Distance Vector RouEng Protocol • RouEng InformaEon Protocol (RIP) • Enhanced Interior Gateway RouEng Protocol (EIGRP) • Link State RouEng Protocol • Open Shortest Path First (OSPF) • Intermediate System to Intermediate System (IS-‐IS)
- 6. OSPF Routing Protocol • Link State RouEng Protocol • Open Standard RouEng Protocol • Fast Convergence • Scalable RouEng protocol • Secure RouEng Protocol • Commonly use in the producEon network
- 7. OSPF Study CaseDiagram Providers Core Router PE01 PEPE PE OSPF Gi1/1 Gi1/1 Gi1/2 Po1 P01 Lo0:209.165.100.10 Lo0:209.165.100.11 Lo0:209.165.100.1 Lo0:209.165.100.2 Lo0:209.165.100.8 Lo0:209.165.100.9 209.165.1.2 209.165.1.1 209.165.1.5 209.165.1.9
- 8. OSPF Configuration onPE ! router ospf 1 router-‐id 209.165.100.10 auto-‐cost reference-‐bandwidth 10000 redistribute connected metric-‐type 1 subnets redistribute sta=c metric-‐type 1 subnets passive-‐interface default no passive-‐interface GigabitEthernet1/1 network 209.165.1.2 0.0.0.0 area 0 default-‐informa=on originate metric 30 ! !
- 9. OSPF Configuration onP Router ! router ospf 1 router-‐id 209.165.100.1 auto-‐cost reference-‐bandwidth 10000 redistribute connected metric-‐type 1 subnets redistribute sta=c metric-‐type 1 subnets passive-‐interface default no passive-‐interface GigabitEthernet1/1 no passive-‐interface GigabitEthernet1/2 no passive-‐interface Po1 network 209.165.1.1 0.0.0.0 area 0 network 209.165.1.5 0.0.0.0 area 0 network 209.165.1.9 0.0.0.0 area 0
- 10.