Netgear XCM8806 Chassis Hardware Installation Guide - Page 230

NETGEAR 8800 Chassis Switch CLI Manual Note: Always verify the LACP configuration by issuing the show ports sharing command; look for the ports listed as being in the aggregator. If a port in a LAG fails, traffic is redistributed to the remaining ports in the LAG. If the failed port becomes active again, traffic is redistributed to include that port. Link aggregation must be enabled on both ends of the link, or a network loop will result. Note: See NETGEAR 8800 User Manual for information on the interaction of port-based ACLs and LAGs of ports. LAGs are defined according to the following rules: • Although you can reference only the logical port of a LAG to a Spanning Tree Domain (STPD), all the ports of a load-sharing group actually belong to the specified STPD. • When using link aggregation, you should always reference the logical port of the LAG when configuring or viewing VLANs. VLANs configured to use other ports in the LAG will have those ports deleted from the VLAN when link aggregation becomes enabled. Link aggregation, or load-sharing, algorithms allow you to select the distribution technique used by the LAG to determine the output port selection. Algorithm selection is not intended for use in predictive traffic engineering. • Port-based-Uses the ingress port to determine which physical port in the LAG is used to forward traffic out of the switch. • Address-based-Uses addressing information to determine which physical port in the LAG to use for forwarding traffic out of the switch. Refer to configure sharing address-based custom for more information on using addressing information. The following guidelines apply to link aggregation on the NETGEAR 8800 series switch: • A static LAG can include a maximum of 8 ports. • An LACP LAG can include a maximum of 16 ports; out of these up to 8 can be selected links and the remaining 8 will be standby links. • A Health Check LAG can include a maximum of 8 ports. • The available address-based parameters on the NETGEAR 8800 series switch are L2 for Layer 2 and L3 for Layer 3. If the packet is not IP, the switch applies the Layer 2 algorithm, which is the default setting. The switch can use IPv6 addresses. • Broadcast, multicast, or unknown unicast packets are transmitted differently depending on the device you are using: 230 | Chapter 5. Commands for Configuring Slots and Ports on a Switch