Procedure 3-27: Create LAG
Purpose
The system supports the Link Aggregation (LAG) at the Ethernet side, as specified in IEEE Std. 802.3ad-2000; it is a technique to aggregate many data streams into a single logical link. The resulting aggregate link will be treated by the system (with regard to instances about STP, IGMP, network protections, etc.), as a single link. It permits to overcome the bandwidth limitation of the single Ethernet interfaces, or to protect the traffic.
Permitted port rates to be aggregated are 100 Mbps and 1 Gbps (10 Mbps and 10 Gbps are for future release). The max number of ports (LAG-size) to be aggregated is 8; (LAG stands for Link Aggregation Group). Links may be anytime added or removed to/from the bundle. Ports to be aggregated can be either located on the same board and also on different boards.
General
Its management in the network is based upon the communication, between the aggregate partner pieces of equipment, of LACP messages (Link Aggregation Control Protocol). The LACP packets transport information about set-up, aggregation capability, links failures, automatic reconfiguration after failure, etc. The benefits of Link Aggregation feature are:
-
Load balancing (the traffic is distributed over the constituting links).
-
Reliability increasing (in case that a link of the aggregate fails, its traffic will be automatically distributed over the other links of the aggregate).
The conditions for Link Aggregation option are the followings:
-
All involved ports must have the same configurations, regarding AutoNegotiation and Flow Control.
-
All aggregated links must be point-to-point (Multicast is not allowed).
-
All involved ports must be Local (Remote ports are not allowed).
-
Actor and Partner ports (local and far sides) must be of the same type.
Link Aggregation Management
Use the following procedure to creating a Link Aggregator:
1 |
Click LAG Group (Link Aggregation Management Group) icon from the tree area as shown in Figure 3-44, Aggregation management tree expand. The Link Aggregation Mng screen is displayed in the right hand side frame as shown in . Figure 3-44: Aggregation management tree  |
2 |
Select one of the LAG-x (Link Aggregation Group) icon and the client area displays. Table 3-13, Link aggregation parameters provides description of link aggregation parameters. Table 3-13: Link aggregation parameters |
3 |
Enter the LAG Name in the field provided for name. |
4 |
Enter the User name for the LAG in the field provided for User Label. |
5 |
Specify the Actor Admin Key. |
6 |
Specify the Actor System Priority. |
7 |
Specify the Maximum MRU. |
8 |
Click Hash Input to select the New Hashing Key Mask as shown in Figure 3-45, Hash Input Figure 3-45: Hash Input
Figure 3-46: Mask 1
Figure 3-47: Mask 2 |
9 |
Click Save to save the LAG configuration. End of steps |
Modify a Link Aggregation Configuration
1 |
Click LAG Group (Link Aggregation Management Group) icon from the tree area and expand. Select the LAG Group. | ||||||||||||||||||||||||||||||||||||||||||
2 |
In the Link Aggregation Mng screen select the LAG to modify and click Configuration. Click LAG in the Link Aggregator configuration screen Table 3-14, Modify LAG parameters provides description of modify lag parameters. Table 3-14: Modify LAG parameters
| ||||||||||||||||||||||||||||||||||||||||||
3 |
Click Save and Continue to apply the previous settings and restart with new configuration. | ||||||||||||||||||||||||||||||||||||||||||
4 |
Click Save and Exit to save the modification and return to the previous screen. | ||||||||||||||||||||||||||||||||||||||||||
5 |
Click Cancelto exit the screen without saving. | ||||||||||||||||||||||||||||||||||||||||||
6 |
To delete a LAG: Delete all LAG related traffic, unbind all ports and change ADMIN state to disable. Navigate back to the LAG Group (Link Aggregation Management Group) icon from the tree area and expand. Click to select the LAG Group. In the Link Aggregation Mng tab, select the LAG configuration to be deleted and click Delete. End of steps | ||||||||||||||||||||||||||||||||||||||||||
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements