Vodafone MachineLink 3G
Virtual Router Redundancy Protocol
Feature Spotlight
1
Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
What is VRRP?
• Most of us configure a static route to a single router
on PCs because it is easy, but what if that router goes
down? The PC client won’t be able to reach other
networks, like the internet.
• VRRP (Virtual Router Redundancy Protocol) is a
non-proprietary redundancy protocol that lets you
configure a group of routers to act as the default
gateway for the purposes of backup and redundancy.
• Using this method, we can point the PC clients to
the IP address of the VRRP virtual router so that if
one of the master routers in the group goes down,
another router takes over as the master and
maintains routing functionality for the client.
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Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
What is VRRP? (continued)
• In VRRP, there are two types of routers; master and
backup routers.
• You can configure up to 255 virtual routers in a
group.
• Master routers have a priority of 255 and backup
routers have a priority of 1-254.
• A virtual router must use 00-00-5E-00-01-XX as its
MAC address. The last byte of the MAC address (XX)
is the Virtual Router ID (VRID) and is different for
each virtual router in the group.
• This address is used by only one physical router at a
time and is the only way that other physical routers
can indentify the master router within a virtual router.
3
Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
What can you do with VRRP?
The diagram below illustrates how VRRP works.
4
Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
Configuring VRRP
5
Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
Configuring VRRP
Configuring the backup router
6
Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
Configuring VRRP
Configuring the master router
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Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification
For more information
For more information on VRRP setup, a whitepaper is available on the NetComm
Wireless website at http://vodafone.netcommwireless.com
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Integrated M2M Terminals
Introduction Vodafone MachineLink
3G v1.0
C3 confidentiality classification