Huawei Quidway S3500 Series User Manual

Operation Manual - Reliability
Quidway S3500 Series Ethernet Switches Chapter 1 VRRP Configuration
Huawei Technologies Proprietary
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Chapter 1 VRRP Configuration
1.1 VRRP Overview
Virtual Router Redundancy Protocol (VRRP) is a fault-tolerant protocol. In general, a
default route (for example, 10.100.10.1 as shown in the following internetworking
diagram) will be configured for every host on a network, so that the packets destined to
some other network segment from the host will go through the default route to the Layer
3 Switch1, implementing communication between the host and the external network. If
Switch1 is down, all the hosts on this segment taking Switch1 as the next-hop on the
default route will be disconnected to the external network.
Ethernet
Switch
Host 1Host 2Host 3
10.100.10.7 10.100.10.8 10.100.10.9
10.100.10.1
Network
Figure 1-1 LAN Networking
VRRP, designed for LANs with multicast and broadcast capabilities (such as Ethernet)
settles the above problem. The diagram below is taken as an example to explain the
implementation principal of VRRP. VRRP combines a group of LAN switches (including
a Master and several Backups) into a virtual router (a backup group).

Huawei Quidway S3500 Series Specifications

General

Brand	Huawei
Model	Quidway S3500 Series
Category	Network Router
Language	English