Before You Start - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability

11.2.1 Before You Start

Before configuring a multi-device backup platform, learning the applicable environment, pre-
configuration tasks, and data preparation can help you rapidly and correctly finish the
configuration task.
Applicable Environment
When the NE80E/40E acts as an edge service device, it is directly connected to a convergence
device. The convergence device is connected to downstream DSLAMs and upstream NE80E/
40Es. When one or several master NE80E/40Es fail, to switch over services to the backup device,
the NE80E/40Es need to work in N:1 redundancy mode, that is, multi-device backup.
Multi-device backup uses VRRP, which operates on Ethernet, to determine master/backup
devices. Other link detection protocols such as BFD, 802.1ag, and 802.1ah can cooperate with
VRRP to change the VRRP status.
During the backup, the RBS acts as a general backup module and uses TCP for transmission.
The RBS offers registration interfaces to other service modules, providing batch backup and
real-time backup. After a TCP connection is set up, the system performs data transmission of
batch backup and real-time backup through the backup protocol. Meanwhile, the RBP offers
user interfaces for configuring multi-device backup of the same style to users. The applications
of multi-device backup are all based on RBP.
Pre-configuration Tasks
Before establishing the multi-device backup platform, complete the following tasks:
l
l
l
Data Preparation
To establish the multi-device backup platform, you need the following data.
No.
1
2
3
4
Issue 02 (2014-09-30)
Configure peer BFD, link BFD, or Ethernet OAM at the user side.
Configure peer BFD at the network side.
Configure a local or remote IP address pool. (The IP address pools on the devices that back
up each other must be the same.)
Data
VRRP backup group ID
IP addresses of devices that back up each other
Backup ID, which is used together with the RBS to determine the RBP that the
user belongs to
IP address pool name
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11 Multi-node Backup Configuration
1137