Introduction To The Backup Center; Basic Concepts Of The Backup Center - 3Com MSR 50 Series Configuration Manual

106
Introduction to the
Backup Center
Basic Concepts of the
Backup Center
B C
ACKUP
When configuring the backup center, go to these sections for information you are
interested in:
"Introduction to the Backup Center" on page 1961
■
"Introduction to Backup Center Settings" on page 1963
■
"Configuring Interface Backup" on page 1963
■
"Configuring Load Sharing" on page 1965
■
"Displaying and Maintaining the Backup Center" on page 1965
■
"Backup Center Configuration Example" on page 1966
■
The backup center functions as a part of the management and backup function to
provide backup for interfaces on your device. It delivers reliability by switching
traffic over to a backup interface when the primary one fails.
As shown in Figure 578, interfaces Serial 2/0, Serial 2/1 and Serial 2/2 on Router A
back up one and another. Serial 2/0 takes on data transmission and Serial 2/1 and
Serial 2/2 are the backup interfaces and have different priorities.
Figure 578 Diagram for the backup center
S2/0
Router A
When interface Serial 2/0 or its link to Router B fails, the backup interface with the
highest priority is enabled to transmit data, thus ensuring smooth data
transmission.
In a backup center, the interfaces include the following two types:
Main interface
Interfaces that are backed up are main interfaces (For example, Serial 2/0 in
Figure 578). A main interface can be any physical interface or subinterface, such as
an Ethernet, POS or ATM.
C
ENTER ONFIGURATION
Router B
LAN