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Routing Concepts - Coggle Diagram
Routing Concepts
Packet Forwarding Decision
The router finds the longest matching prefix
The router encapsulates the packet in a data link frame
The router examines the destination IP address
If there isn´t a matching route the packet dropped
The data link frame with an encapsulated IP packet arrives on the ingress interface
Basic Router Configuration
Verification Commands
show ip interface
show ip route
show interfaces
ping
show running-config interface
show ip interface brief
Filter Command Output
Parameters
Include
Exclude
Section
Begin
Configuration Commands
login
hostname
password
ip address
ipv6 address
banner
Static and Dymanic Routing
Static Routes
It is used for routes outside the routing domain and not learned by the dynamic
the network administrator wants to explicitly define the path for a specific network
As a default route
Routing between stub network
Dynamic Routes
Scenarios
In networks consisting of more than just a few routers
When a change in the network topology requires the network to automatically
For scalability
Protocols
Open Shortest Path First (OSPF)
Enhanced Interior Gateway Routing Protocol (EIGRP)
Routing Information Protocol (RIP)
Route Source
Administrative Distance
EIGRP summary route: 5
External DGP: 20
Internal EIGRP 90
OSPF: 110
Static route: 1
IS-IS: 115
RIP: 120
External EIGRP: 170
Directly: 0
Internal BGP: 200
This information is derived from:
Static routes
Dynamic routing protocols
Directly connected networks