Westermo RedFox Series - Manual (Page 662)

Westermo OS Management Guide
Version 4.17.0-0
30.1 Introduction to WeOS VRRP support
The table below summarises VRRP support in WeOS.
Feature Web CLI General Description
VRRP Instances X X Sections 30.1.1 - 30.1.2
Virtual Router IDs (VRIDs) X X Sections 30.1.1 - 30.1.2
Virtual Router IP Address X X Sections 30.1.1 - 30.1.2
Virtual Router Priority X X Sections 30.1.1 - 30.1.2
Static Priority X X Sections 30.1.1 - 30.1.2
Dynamic Priority X X Sections 30.1.1 - 30.1.2
Preemption control X X Sections 30.1.1 - 30.1.2
Version Specific Settings
VRRP versions (v2/v3)
X X Sections 30.1.2 - 30.1.3
Advertisement Interval X X Sections 30.1.2 - 30.1.3
Regular (v2) X X Sections 30.1.2 - 30.1.3
Fast (v3) X X Sections 30.1.2 - 30.1.3
Message
X X Section 30.1.4
authentication (v2)
Advanced Features
Synchronisation Groups
X X Section 30.1.5
Multicast Routing Control X X Section 30.1.6
Load balancing X X Section 30.1.7
30.1.1 VRRP Overview
The primary objective of VRRP is to enable redundancy between a host and
its neighbour router, i.e., you can deploy additional routers on an IP subnet as
backup routers, and have one of the backup routers to automatically take over if
the primary router fails.
Fig. 30.1 can be used to illustrate the need for VRRP in
such a scenario.
❼ A host will typically have an IP setting where the default gateway points
to a specific router. An example is given in fig. 30.1 a, where the host (H)
will send all traffic towards the Internet via Router 1 (R1) with IP address
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