Planet XGS3-24042 User Manual download pdf (Page 601)

100

101

67-2

method of MSTP instances, and ULPP does not provide the protection to other VLANs.

When the uplink switch is happennig, the primary forwarding entries of the device will not be applied to new

topology in the network. In the figure, SwitchA configures ULPP, the portA1 as the master port at forwarding

state, here the MAC address of PC is learned by Switch D from portD3. After this, portA1 has the problem, the

traffic is switched to portA2 to be forwarded. If there is the data sent to PC by SwitchD, still the data will be

forwarded from portD3, and will be losed. Therefore, when switching the uplink, the device of configuring

ULPP needs to send the flush packets through the port which is switched to Forwarding state, and update

MAC address tables and ARP tables of other devices in the network. ULPP respectively uses two kinds of

flush packets to update the entries: the updated packets of MAC address and the deleted packets of ARP.

For making use of the bandwidth resource enough, ULPP can implement VLAN load balance through the

configuration. As the picture illustrated, SwitchA configures two ULPP groups: portA1 is the master port and

portA2 is the slave port in group1, portA2 is the master port and portA1 is the slave port in group2, the VLANs

are protected by group1 and group2, they are 1-100 and 101-200. Here both portA1 and portA2 at the

forwarding state, the master port and the slave port mutually backup, and respectively forward the packets of

the different VLAN ranges. When portA1 has the problem, the traffic of VLAN 1-200 are forwarded by portA2.

After this, when portA1 is recovering the normal state, portA2 forwards the data of VLAN 101-200 sequentially,

but the data of VLAN 1-100 is switched to portA1 to forward.

Figure 67-2 VLAN load balance

67.2 ULPP Configuration Task List

1. Create ULPP group globally

2. Configure ULPP group

3. Show and debug the relating information of ULPP

1 2 ... 596 597 598 599 600 601 602 603 604 605 606 ... 720 721

Comments to this Manuals

No comments

Planet XGS3-24042 User Manual Page 601

Comments to this Manuals

Related products and manuals for Routers Planet XGS3-24042