Table of contents
Legal information ......................................................................................................... 2
1 Introduction ........................................................................................................ 5
1.1 Overview............................................................................................... 5
1.2 Principle of operation ............................................................................ 6
1.3 Components used ................................................................................ 8
2 Hardware setup ................................................................................................ 11
3 Engineering VRRP ........................................................................................... 13
3.1 Commissioning PC and server ........................................................... 13
3.2 Commissioning SCALANCE .............................................................. 17
3.3 Configuring the master router ............................................................ 24
3.3.1 Disable Spanning Tree Protocol ........................................................ 24
3.3.2 Create VLANs .................................................................................... 25
3.3.3 Activate routing ................................................................................... 27
3.3.4 Create subnets ................................................................................... 28
3.3.5 Configure VRRP ................................................................................. 30
Creating the virtual router instance .................................................... 30
Configuring the router instance .......................................................... 30
Configuring the addresses ................................................................. 32
3.4 Configuring the backup router ............................................................ 34
3.4.1 Disable Spanning Tree Protocol ........................................................ 34
3.4.2 Create VLANs .................................................................................... 35
3.4.3 Activate routing ................................................................................... 37
3.4.4 Create subnets ................................................................................... 38
3.4.5 Configure VRRP ................................................................................. 40
Create the virtual router instance ....................................................... 40
Configuring the router instance .......................................................... 40
Address configuration ......................................................................... 42
3.5 Checking the VRRP status ................................................................. 44
4 Engineering of firewall redundancy with VRRP ........................................... 45
4.1 Configuring the master router ............................................................ 47
4.2 Configuring the backup router ............................................................ 48
5 Testing the VRRP scenario ............................................................................. 50
5.1 Error scenarios ................................................................................... 50
5.2 Diagnostics options ............................................................................ 52
5.3 Error profiles ....................................................................................... 53
6 Useful information ........................................................................................... 54
6.1 Normal operation ................................................................................ 54
6.2 Failure of a device or a connection .................................................... 54
6.2.1 Router failure ...................................................................................... 54
6.2.2 Failure of a connection cable ............................................................. 55
6.3 Tracking process ................................................................................ 56
6.3.1 Interface tracking ................................................................................ 56
6.3.2 VRID tracking ..................................................................................... 56
6.3.3 Address monitoring ............................................................................ 56
6.4 Calculating the failure time ................................................................. 57
7 Appendix .......................................................................................................... 59
7.1 Service and support ........................................................................... 59
7.2 Industry Mall ....................................................................................... 60
7.3 Links and literature ............................................................................. 60