Ethernet Service Data Configuration
5.4 Configuring the LACP Function
Link Aggregation Control Protocol (LACP) is based on the IEEE802.3ad standard. It is used to implement dynamic link aggregation. It allows binding multiple physical interfaces into a logical interface. The physical interfaces form a redundant and backup relationship and implement load sharing.
The LACP function enables multiple physical links to be bound into a logical link and form a link aggregation group. It accomplishes the following functions:
l Increasing bandwidth: The width of the bound physical links is the sum of the bandwidths of all physical links in the link aggregation group.
Chapter 5 Ethernet Service Data Configuration
l Improving system stability and availability: The aggregation link is available even if one physical link is disconnected.
l Sharing load: The aggregation link sends data in accordance with a policy to achieve load balancing.
Prerequisite
l The required boards and ports are added.
l The corresponding ports are enabled in the Ethernet port configuration.
Steps
1. In the left pane, select ETH > Port Related > Port Configuration. The port configuration page is displayed. Ensure that the ports for configuring aggregation are all enabled. If not, enable the disabled ports.
2. Configure the LACP port:
a. In the left pane, select ETH > LACP > Port Configuration. The LACP port configuration page is displayed. Click Add. The Port Configuration dialog box displayed, see Figure 5-39.
Figure 5-39 Port Configuration Dialog Box
b. From the Port drop-down list, select the port to be aggregated. Configure the LACP port parameters.
For a description of the parameters, refer toTable 5-13.
Table 5-13 LACP Interface Configuration Parameters
Parameter Value Range Default Value
Description
Port Port names in the drop-down list
- Specifies the port and its slot for configuring the LACP protocol. The ports that can be configured as LACP ports are Ethernet physical port and Ethernet air interface. An
Parameter Value Range Default Value
Description
aggregated port cannot be configured as an LACP port.
Port Priority 1–65535 32768 Sets the priority for selecting member ports in dynamic aggregation. A higher priority level indicates that the port is more easily to be aggregated.
Port Work Mode l Active Mode l Passive Mode l ON
Active Mode Indicates whether the port actively sends LACP packets.
l Active Mode: indicates that the port actively sends packets. l Passive Mode: indicates that the
port does not actively send packets. l Enable: indicates that the port does
not send packets.
Port Aggregation Mode l Aggregation Port l Individual Port Individual Port
Indicates whether the specified port is an individual port or an aggregation port that can be aggregated with other ports. The default setting, Aggregation Port, is recommended, though the two options will have distinct differences only in a later version.
Port Ethernet Traffic
l Open l Close
Open Indicates whether the Ethernet traffic is enabled.
c. Click Apply.
d. Use the same method to add other ports to be aggregated. 3. Configure the LACP aggregation group:
a. In the left pane, select ETH > LACP > LAG Configuration. The LACP aggregation group configuration page is displayed.
Chapter 5 Ethernet Service Data Configuration
Figure 5-40 LAG Configuration Dialog Box
c. Configure the LACP aggregation parameters. For a description of the parameters, refer toTable 5-14.
Table 5-14 LACP Aggregation Group Parameters
Parameter Value Range Default Value
Description
Aggregation Index
1–31 1 Uniquely identifies of an aggregation group. Multiple aggregation groups are allowed for a device. Each aggregation ID is assigned with an ID.
Aggregation Name A character string with at most 31 characters
SG Names an aggregation group.
Aggregation Priority
1–65535 1 Specifies the priority of the two ends of a device. A lower value indicates a higher priority.
Aggregation Policy
l Static l Manual
Static Specifies the aggregation policy, which can be static or manual.
For static aggregation, an aggregation group is created on the basis of protocol calculation.
For manual aggregation, an aggregation group is created according to the configuration. Manual aggregation does not transmit or receive protocol packets.
Parameter Value Range Default Value Description Load Strategy l Source MAC l Destination MAC l Source and Destination MAC l Source IP l Destination IP l Source and Destination IP Source MAC
Specifies the load sharing policy used by an aggregation group. The load policy supports load sharing based on source MAC, destination MAC, source and destination MAC, source IP, destination IP, source and destination IP.
Master Port LACP port names in the drop-down list
- Specifies the master port of an aggregation group. After an aggregation group is created, the group attributes must be consistent with those of the master port. That is, the attributes of the master port are duplicated to the aggregation group port. If the aggregation group needs to be dismantled, resume the aggregation group attributed to the master port and prohibit other member ports.
LAG Port Displayed member port names
- Specifies the member ports in an aggregation group. Two to eight members are allowed.
A LACP Port belongs to only one aggregation group.
d. Click Apply.
4. Log in to theLMTat the opposite end. Perform steps 1 through 3.
5. Connect the interfaces of the two devices for configuring aggregation by network cables, fibers or radio link. Verify that the status indicators of the interfaces are green. 6. Open the LMT interfaces at both ends. Select ETH > LACP > LAG Info and query the
LAG information, seeFigure 5-41.
Chapter 5 Ethernet Service Data Configuration
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