ProSafe 7000 Managed NETGEAR Switch Software Administration ...

3. LAGs
Link Aggregation Groups
This chapter provides the following examples:
• Create Two LAGs on page 35
• Add Ports to LAGs on page 36
• Enable Both LAGs on page 38
3
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.
Server
Port 1/0/3
LAG_10
Port 1/0/2
LAG_10
Layer 3 Switch
Layer 2 Switch
Port 1/0/8
LAG 20
Subnet 3
Port 1/0/9
LAG_20
Subnet 2 Subnet 3
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.
Chapter 3. LAG s | 34