ELTEX MA4000-PX, Operation And Maintenance Manual, Page: 66 / 181

66 User Manual, Part III
Subscriber access/aggregation node МA4000-РХ
19 LAG CONFIGURATION
19.1 Introduction
This Chapter describes configuration of uplink interfaces aggregation.
Link aggregation (IEEE 802.3ad) is a technology that allows multiple physical links to be combined
into one logical link (aggregation group). Aggregation group has high throughput and is very reliable.
Fig. 25—Multiple Physical Links Combined to an Aggregation Group
The access node supports two interface aggregation modes: static and dynamic. Static
aggregation implies that all communication links of a group are always active. As for dynamic
aggregation, link activity is dynamically determined during operation via LACP protocol.
Table 16 — Operation Modes of Aggregation Groups
Mode Description
static Link aggregation protocol is not used
lacp LACP is used
The access node has several algorithms to balance load within aggregation groups.
Table 17
—
Load Balance Modes
Mode Description
ip Based on IP address of sender and receiver
ip-l4 Based on IP address of sender and receiver, and L4
mac Based on MAC address of sender and receiver
mac-ip Based on MAC and IP addresses of sender and receiver
mac-ip-l4
Based on MAC address, IP address and L4 of sender and
receiver
The access node supports two LACP modes. Passive mode—the access node does not initiate
creation of a logical link, but processes incoming LACP packets. Active mode—the access node creates
an aggregated communication link and initiates parameters conformance. The parameters are
coordinated in case equipment operates in active or passive LACP modes.