Figure 11-1 Dual-Homed Application Based On Lacp - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

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ISCOM2600G-HI (A) Series Configuration Guide
agree. The operation key is a configuration combination automatically generated based on
configurations of the interface, such as the speed, duplex mode, and Up/Down status. In a
LAG, interfaces in the Selected status share the identical operation key.

In dynamic LACP link aggregation, the system automatically creates and deletes the LAG and
member interfaces through LACP. Interfaces cannot be automatically aggregated into a group
unless their basic configurations, speeds, duplex modes, connected devices, and the peer
interfaces are identical.
In manual aggregation mode, all member interfaces are in forwarding status, sharing loads. In
static/dynamic LACP mode, there are backup links.
Link aggregation is the most widely used and simplest Ethernet reliability technology.

On the carrier-grade Ethernet, various redundancy mechanisms provide nodes and networks
with reliable links. Choosing redundancy mechanisms depends on factors, such as the
transmission technology, topology, multi-homing of a single node to the entire network,
device capability, AS boundary, carrier's service model, and carrier's choice. High reliability
of the carrier-grade Ethernet is accessible from concurrently applying the redundancy
mechanism inside the device and that between racks.
When technologies keep growing, the Dual Home Device (DHD) emerges, which features
two uplink access points as a redundancy mechanism. Sometimes, the DHD does not want or
is incapable of running any loop detection protocols. To provide more choices, Raisecom
realizes Multi-Chassis Link Aggregation Control Protocol (mLACP) to select paths for the
DHD.

Figure 11-1 Dual-homed application based on LACP

As shown in Figure 11-1, the DHD exchanges LACP packets with PE 1 and PE 2, and two
PEs exchange configuration information through InterChassis Communication Protocol
(ICCP), synchronizing the status of each other (each PE receives and saves information about
the other). The two PEs form a virtual LACP peer and appear as a single device to the DHD.
Dynamic LACP link aggregation
mLACP
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