Advanced Routing

Explore advanced network routing concepts and protocols.

Routing Protocols

BGP (Border Gateway Protocol)

Autonomous system routing between networks, often used for Internet backbone routing.

router bgp 65000
 no bgp default ipv4-unicast
 neighbor 192.168.1.1 remote-as 65000
 neighbor 192.168.1.1 update-source 192.168.1.50
 !

OSPF (Open Shortest Path First)

Interior gateway protocol for routing within individual networks.

router ospf 1
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.2.0 0.0.0.255 area 0
 !

RIP (Routing Information Protocol)

Simple distance-vector routing protocol commonly used in small networks.

router rip
 version 2
 network 192.168.1.0
 network 192.168.2.0
 !

EIGRP (Enhanced Interior Gateway Routing Protocol)

Hybrid routing protocol balancing distance vector and link-state features.

router eigrp 100
 network 192.168.1.0 0.0.0.255
 !

Routing Concepts

Subnetting

Subnetting is the practice of dividing a network into multiple smaller subnetworks. This helps in better management of network traffic and reduces broadcast domains.

IP Address: 192.168.10.0
 Subnet Mask: 255.255.255.192
 Net ID: 192.168.10.0
 Host ID: .32 - .63
 Broadcast: 192.168.10.63

Routing Best Practices

Route Summarization

Combine multiple static or dynamic routes into a single summary route. This reduces the number of routes processed and maintained by the network routing devices.

ip route 192.168.0.0 255.255.252.0 192.168.1.2

Routing Security

Implement security measures to prevent route injection attacks and unauthorized access to routing protocols.

router ospf 1
 neighbor 192.168.1.1
 authentication message-digest
 message-digest-key 1 md5 ABC123