Edge-Core ES4624-SFP Basic Management Manual page 647

SwitchD
SwitchB E1/1 E1/2 SwitchC
Vlan 1-100 Vlan 101-200
E1/1 E1/2
SwitchA
Fig 31-4 ULPP typical example2
ULPP can implement the VLAN-based load balance. As the picture illustrated,
SwitchA configures two ULPP groups: port E1/1 is the master port and port 1/2 is the
slave port in group1, port 1/2 is the master port and port 1/1 is the slave port in group2.
The VLANs protected by group1 are 1-100 and by group2 are 101-200. Here both port
E1/1 and port E1/2 at the forwarding state, the master port and the slave port mutually
backup, respectively forward the packets of different VLAN ranges. When port E1/1 has
the problem, the traffic of VLAN 1-200 are forwarded by port E1/2. When port E1/1 is
recovering the normal state, still port E1/2 forwards the data of VLAN 101-200, the data
of VLAN 1-100 are switched to port E1/1 to forward.
SwitchA configuration task list:
Switch(Config)#spanning-tree mst configuration
Switch(Config-Mstp-Region)#instance 1 vlan 1-100
Switch(Config-Mstp-Region)#instance 2 vlan 101-200
Switch(Config-Mstp-Region)#exit
Switch(Config)#ulpp group 1
Switch(ulpp-group-1)#protect vlan-reference-instance 1
Switch(ulpp-group-1)#preemption mode
Switch(ulpp-group-1)#exit
Switch(Config)#ulpp group 2
Switch(ulpp-group-2)#protect vlan-reference-instance 2
Switch(ulpp-group-2)#preemption mode
Switch(ulpp-group-2)#exit
Switch(Config)#interface ethernet 1/1
Switch(config-If-Ethernet1/1)#switchport mode trunk
647