Multi-Interface Load Sharing Configuration Example - 3Com MSR 50 Series Configuration Manual

Multi-interface Load
Sharing Configuration
Example
# On Router B configure a static route to the segment 192.168.1.0/24 where
Router A resides.
<RouterB> system-view
[RouterB] ip route-static 192.168.1.0 24 serial 2/0
[RouterB] ip route-static 192.168.1.0 24 serial 2/1
[RouterB] ip route-static 192.168.1.0 24 serial 2/2
3 Configure the standby interface and failover and fallback delays on Router A.
# Specify interfaces Serial 2/1 and Serial 2/2 on Router A to back up Serial 2/0, and
assign them the priorities 30 and 20 respectively.
[RouterA] interface serial 2/0
[RouterA-Serial2/0] standby interface serial 2/1 30
[RouterA-Serial2/0] standby interface serial 2/2 20
# Configure both failover and fallback delays to 10 seconds.
[RouterA-Serial2/0] standby timer delay 10 10
4 Verify the configuration on Router A.
# Display state of the main interface and the backup interface.
[RouterA-Serial2/0] display standby state
Interface Interfacestate
serial2/0 UP
serial2/1 STANDBY
serial2/2 STANDBY
Backup-flag meaning:.
M---MAIN B---BACKUP
D---LOAD P---PULLED
# Manually shut down the main interface Serial 2/0.
[RouterA-Serial2/0] shutdown
# 10 seconds after the main interface was shut down, the backup center enables
the backup interface Serial 2/1 with a higher priority. Then you can view the state
of the main and backup interfaces.
[RouterA-Serial2/0] display standby state
Interface Interfacestate
serial2/0 DOWN
serial2/1 UP
serial2/2 STANDBY
Backup-flag meaning:
M---MAIN B---BACKUP
D---LOAD P---PULLED
Network requirement
Use interfaces Serial 2/1 and Serial 2/2 on Router A to back up the main
■
interface Serial 2/0, assigning the backup interface Serial 2/1 a higher priority.
Configure the available bandwidth used for setting the thresholds and the
■
enable-threshold and disable-threshold of load sharing.
Backup Center Configuration Example
Standbystate Standbyflag
MUP MU
STANDBY BU
STANDBY BU
V---MOVED U---USED
Standbystate Standbyflag
MUP MU
STANDBY BU
STANDBY BU
V---MOVED U---USED
1967
Pri Loadstate
30
20
Pri Loadstate
30
20