VYATTA - The Easy Tutorial - Case Study 5

Vyatta Case 5 - VRRP
Last Change : Dec 26 2007

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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.

Top of the page

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

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

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