Siemens RUGGEDCOM ROX II, Руководство пользователя

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RUGGEDCOM ROX II
CLI User Guide
Chapter 14
Network Redundancy
Managing VRRP 601
Network Redundancy
This chapter describes protocols and features that allow RUGGEDCOM ROX II to operate with redundancy,
protecting the network from crippling service disruptions from single points of failure.
CONTENTS
• Section 14.1, “Managing VRRP”
• Section 14.2, “Managing Link Failover Protection”
• Section 14.3, “Managing Spanning Tree Protocol”
• Section 14.4, “Managing Redundant Network Access (RNA)”
Section 14.1
Managing VRRP
The Virtual Router Redundancy Protocol (VRRP) is a gateway redundancy protocol. It provides a gateway failover
mechanism invisible to hosts and other devices that send traffic through the gateway.
VRRP eliminates a single point of failure associated with statically routed networks by providing automatic failover
using alternate routers. The RUGGEDCOM ROX II VRRP daemon (keepalived) is an RFC 5798 [http://tools.ietf.org/
html/rfc5798] version 2 and version 3 compliant implementation of VRRP.
NOTE
RFC 5798 defines the standard for VRRP version 3 on IPv4 and IPv6. Only IPv4 is supported in this
release of RUGGEDCOM ROX II.
CONTENTS
• Section 14.1.1, “VRRP Concepts”
• Section 14.1.2, “Viewing the Status of VRRP”
• Section 14.1.3, “Enabling/Disabling VRRP”
• Section 14.1.4, “Managing VRRP Trackers”
• Section 14.1.5, “Managing VRRP Groups”
• Section 14.1.6, “Managing VRRP Instances”
• Section 14.1.7, “Managing VRRP Monitors”
• Section 14.1.8, “Managing Track Scripts”
• Section 14.1.9, “Managing Virtual IP Addresses”
• Section 14.1.10, “Managing Connection Synchronization”