Link Aggregation Groups - NETGEAR ProSafe GSM5212P Software Administration Manual

LAGs
3.

Link Aggregation Groups

This chapter provides the following examples:
• Create Two LAGs
• Add Ports to LAGs
• Enable Both LAGs
Link aggregation allows the switch to treat multiple physical links between two end-points as a
single logical link. All the physical links in a given LAG must operate in full-duplex mode at the
same speed. LAGs can be used to directly connect two switches when the traffic between them
requires high bandwidth and reliability, or to provide a higher-bandwidth connection to a public
network. Management functions treat a LAG as if it were a single physical port. You can include
a LAG in a VLAN. You can configure more than one LAG for a given switch.
Port 1/0/3
LAG_10
Port 1/0/2
LAG_10
Server
Layer 3 Switch
Layer 2 Switch
Subnet 2
Figure 4. Example network with two LAGs
LAGs offers the following benefits:
• Increased reliability and availability. If one of the physical links in the LAG goes down,
traffic is dynamically and transparently reassigned to one of the other physical links.
on page 35
on page 36
on page 38
Subnet 3
Port 1/0/8 Port 1/0/9
LAG 20 LAG_20
Subnet 3
3
Chapter 3. LAG s | 34