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VYATTA - The Easy Tutorial - Case Study 5 - VRRP

Vyatta Case 5 - VRRP
Last Change : Dec 26 2007


Tool
Install
Ergonomy
Forum



Details What is Vyatta?
Screenshots
Prerequisites
Tutorial Vyatta
Vyatta & Cisco Commands
Vyatta/Cisco/Quagga Comparison (Quagga section)
Case Study 1 - Static routes (VC 2.0)
Case Study 2 - OSPF simple (VC 2.0)
Case Study 3 - OSPF advanced (VC 2.0)
Case Study 4 - BGP (VC 3.0)
Case Study 5 - VRRP (VC 2.2)
Case Study 6 - NAT (VC 2.0)
Case Study 7 - DHCP (VC 2.2)
Case Study 8 - IPSec (VC 2.2)
Case Study 9 - Packages (VC 3.0)
Case Study 10 - Bridging (VC 3.0)
Case Study 11 - CDP VC 3.0




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1. CASE PRINCIPLE 2. PICTURE 3. CONFIGURATIONS 4. SHOW COMMANDS


1. CASE PRINCIPLE

Vyatta version used: VC 2.2 Aug 30, 2007
We will study here a standardized routing redundancy protocol called VRRP (Virtual Routing Redundancy Protocol). It is based on the Cisco redundancy protocol called HSRP and is the only way to provide redundancy between routers from different manufacturer.
The router having the highest VRRP priority is elected as master. It owns a MAC address which looks like 00-00-5E-00-01-XX and corresponding to the virtual VRRP IP address.
For more information about VRRP, visit the excellent VRRP Wikipedia page.


Read the Vyatta policy about the Community Edition.


2. PICTURE

vyatta cisco case study VRRP Functionalities tested:

(click on the web links to have more details about a protocol)

Interface settings
VRRP
Telnet access
 
 
 
 


3. CONFIGURATIONS

CISCO ROUTER 2651 IOS: 12.4(16)
See the entire configuration
 
VYATTA ROUTER VC2.2 Aug 30, 2007
See the entire configuration
 
interface FastEthernet0/0
  ip address 172.16.10.2 255.255.255.0
 
  vrrp 100 ip 172.16.10.1
  vrrp 100 priority 80
  vrrp 100 preempt
  vrrp 100 authentification 123
edit interfaces ethernet eth1
  set address 172.16.10.3 prefix-length 24
  set vrrp vrrp-group 100
  set vrrp virtual-address 172.16.10.1
  set vrrp priority 100
  set vrrp preempt true
  set vrrp authentification 123
hostname Cisco-router set system host-name Vyatta-Router
line vty 0 4
  no login
set service telnet
 
enable secret password
 
edit system login user vyatta
  set authentification plaintext-password password


4. SHOW COMMANDS

Vyatta_Router>show vrrp

Physical interface: eth0, Address: 172.16.10.1
  Interface state: up, Group: 100, State: master
  Priority: 100, Advertisement interval: 1s, Authentication type: simple
  Preempt: yes, VIP count: 1, VIP: 172.16.10.1
  Advertisement timer: 763s, Master router: 172.26.10.2
  Virtual MAC: 00:00:5E:00:01:64

Cisco-Router#show vrrp brief

vyatta output show  vrrp brief

Cisco-Router#show vrrp all

FastEthernet0/0 - Group 100
  State is Backup
  Virtual IP address is 172.26.10.1
  Virtual MAC address is 0000.5e00.0164
  Advertisement interval is 1.000 sec
  Preemption enabled
  Priority is 80
  Authentication text "123"
  Master Router is 172.26.10.2, priority is 100
  Master Advertisement interval is 1.000 sec
  Master Down interval is 3.687 sec


Packet analysis from Desktop:

A VRRP packet is captured with the Wireshark tool.
Note that the VRRP authentification string ("123") is sent in clear text.



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