Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH 사용자 설명서

In modular switches, XCM8800 supports LAGs across multiple modules, so resiliency is also 
provided against individual module failures.

The software supports control protocols across the LAGs, both static and dynamic. If you add 
protocols to the port and then create a LAG on that port, you may experience a slight 
interruption in the protocol operation. To seamlessly add or delete bandwidth when running 
control protocols, NETGEAR recommends that you create a LAG consisting of only one port. 
Then add your protocols to that port and add other ports as needed. 

You can run the Link Layer Discovery Protocol (LLDP) on ports in a LAG.

Dynamic Versus Static Load Sharing

XCM8800 software supports two broad categories of load sharing, or link aggregation:

Dynamic load sharing—Dynamic load sharing includes the Link Aggregation Control 

Protocol (LACP) and Health Check Link Aggregation. The Link Aggregation Control 
Protocol is used to dynamically determine if link aggregation is possible and then to 
automatically configure the aggregation. LACP is part of the IEEE 802.3ad standard and 
allows the switch to dynamically reconfigure the link aggregation groups (LAGs). The 
LAG is enabled only when LACP detects that the remote device is also using LACP and 
is able to join the LAG. Health Check Link Aggregation is used to create a link 
aggregation group that monitors a particular TCP/IP address and TCP port.

Static load sharing—Static load sharing is a grouping of ports specifically configured to 

load share. The switch ports at each end must be specifically configured as part of a 
load-sharing group. 

The platform-related load-sharing algorithms apply to LACP (as well 

as static load sharing).

Load-Sharing Algorithms

Load-sharing, or link aggregation, algorithms select an egress link for each packet forwarded 
to egress LAG. The XCM8800 software supports the following types of load sharing 
algorithms:

Port based—The egress link is chosen based on the ingress port number.

Address based—The egress link is chosen based on egress packet contents.

The XCM8800 software provides multiple addressed-based algorithms. For some types of 
traffic, the algorithm is fixed and cannot be changed. For other types of traffic, you can 
configure an algorithm. Algorithm selection is not intended for use in predictive traffic 
engineering.