Chapter 1 Hvrp Configuration; Introduction To Hvrp; Background; Basic Concepts Of Hvrp - H3C S9500 Series Operation Manual

Operation Manual – HVRP
H3C S9500 Series Routing Switches

Chapter 1 HVRP Configuration

When configuring HVRP, go to these sections for information you are interested in:

Introduction to HVRP

Configuring HVRP
Displaying and Maintaining HVRP Configuration
HVRP Configuration Example
1.1 Introduction to HVRP

1.1.1 Background

Currently, metropolitan area networks (MANs) established by carriers usually adopt a
ring topology or a tree topology. Whichever topology is in use, it is always necessary
that devices on the distribution layer support the learning of a large number of MAC
addresses in order to satisfy the network access needs of all connected users. With the
continuous increase of network users, the current number of MAC addresses that a
switch can learn may no longer meet the actual demands. This means that MAC
addresses of some users cannot be learnt by the switch, resulting in packets being
broadcast within the VLAN, taking up extra bandwidth and undermining network
functionality.
To address the issue, the Hierarchy VLAN Register Protocol (HVRP) was introduced.
HVRP enables dynamic registration and aging of VLANs for a given port in certain
networking environments by differentiating user VLANs (local VLANs) from non-user
VLANs. It thus saves the amount of space needed for storing MAC addresses,
increasing the user capacity of the whole device.

1.1.2 Basic Concepts of HVRP

I. HVRP
In certain network environments, HVRP can be used to save MAC address storage
space for switches, and therefore, improve network scalability.
II. HVRP ports
Ports with HVRP configured, that is, ports that can send and receive HVRP packets.
III. Root HVRP port
A port with HVRP configured, also configured as a root port on a spanning tree.
1-1
Chapter 1 HVRP Configuration