# 10/4 Float Routing

###### tags: `Networking` `CCNA` `Routing`

[TOC]

## Float Routing

Float Routing can be used to prevent with the situation the the cable or router has break.

Configure float routing

ip route 1.1.1.1 255.255.255.255 192.168.1.1
ip route 1.1.1.1 255.255.255.255 192.168.3.1 <0~255>  #setting an alternative routing 

Notice: There is going to be a problem with the replayed packet, It can't reach the original host

## Dynamic Routing Protocol

### Distance vector routing

dijkstra shortest path frist (SPF)

- RIP (Roting information protocol) (old school )
- Limit: Hops must less then 16
- fundamentally, used in a small business.

Version 1 Versus Version 2

Version 1 has problem with the equal cost route
Because it not support the subnet mask

14.1.5.0 --> 14.1.0.0/16
14.2.5.0 --> 14.1.0.0/16


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- EIGRRP(Provied by SISCO)

### Linked state routing

- OSPF

## Simulate Networking

Configure RIP Routing

router rip 
version 2 
no auto-summary
network <directived networks>


Administrator Distance:
120 -> RIP

### Supernetting

handly-summary