User's Manual

Configuration Guide of XGS-5240-Series
63-8
Fig 4-4 ULPP typical example2
ULPP can implement the VLAN-based load balance. As the picture illustrated, Swit
chA configures two ULPP groups: port E1/0/1 is the master port and port 1/0/2 is the s
lave port in group1, port 1/0/2 is the master port and port 1/0/1 is the slave port in gr
oup2. The VLANs protected by group1 are 1-100 and by group2 are 101-200. Here bot
h port E1/0/1 and port E1/0/2 at the forwarding state, the master port and the slave po
rt mutually backup, respectively forward the packets of different VLAN ranges. When po
rt E1/0/1 has the problem, the traffic of VLAN 1-200 are forwarded by port E1/0/2. Wh
en port E1/0/1 is recovering the normal state, still port E1/0/2 forwards the data of VLA
N 101-200, the data of VLAN 1-100 are switched to port E1/0/1 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-1)#preemption mode
Switch(ulpp-group-2)#exit
Switch(Config)#interface ethernet 1/0/1
SwitchB E1/0/1
SwitchD
SwitchA
E1/0/2 SwitchC
E1/0/2 E1/0/1
Vlan 1-100 Vlan 101-200