Skip to main content

Routing Protocol working layer

BGP is an application layer protocol because it uses TCP to transport its messages,
and RIP because it uses UDP for same purposes.
Other routing protocols such as OSPF are said to operate at the internet layer because they 
encapsulate their messages directly into IP packets.

 Ref : Jeff Doyle (Routing TCP/IP volume 1)


Comments

Post a Comment

Popular posts from this blog

Nested Route Reflection Cluster

Figure 1.1 R1 router bgp 65000  bgp cluster-id 10  neighbor 2.2.2.2 remote-as 65000  neighbor 2.2.2.2 update-source Loopback0  neighbor 2.2.2.2 route-reflector-client  neighbor 3.3.3.3 remote-as 65000  neighbor 3.3.3.3 update-source Loopback0  neighbor 3.3.3.3 route-reflector-client R2 router bgp 65000  bgp cluster-id 20  net 22.22.22.0 mask 255.255.255.0  neighbor 1.1.1.1 remote-as 65000  neighbor 1.1.1.1 update-source Loopback0  neighbor 4.4.4.4 remote-as 65000  neighbor 4.4.4.4 update-source Loopback0  neighbor 4.4.4.4 route-reflector-client R3 router bgp 65000  bgp cluster-id 30  net 33.33.33.0 mask 255.255.255.0  neighbor 1.1.1.1 remote-as 65000  neighbor 1.1.1.1 update-source Loopback0  neighbor 5.5.5.5 remote-as 65000  neighbor 5.5.5.5 update-source Loopback0  neighbor 5.5.5.5 route-reflector-client R4 router bgp 65000 ...
Post a Comment
Read more

OSPF Traffic Types

Three types of traffic may be defined in relation to areas: Intra-area traffic consists of packets that are passed between routers within a single area. Inter-area traffic consists of packets that are passed between routers in different areas. External traffic consists of packets that are passed between a router within the OSPF domain and a router within another routing domain. Area ID 0 (or 0.0.0.0) is reserved for the backbone. The backbone is responsible for summarizing the topologies of each area to every other area. For this reason, all inter-area traffic must pass through the backbone; non-backbone areas cannot exchange packets directly. Ref: Routing TCP/IP volume 1
Post a Comment
Read more