Web Management Guide-R07

Table Of Contents
Chapter 4
| Interface Configuration
Trunk Configuration
– 128 –
Configuring a
Dynamic Trunk
Use the Interface > Trunk > Dynamic pages to set the administrative key for an
aggregation group, enable LACP on a port, configure protocol parameters for local
and partner ports, or to set Ethernet connection parameters.
Figure 50: Configuring Dynamic Trunks
Command Usage
To avoid creating a loop in the network, be sure you enable LACP before
connecting the ports, and also disconnect the ports before disabling LACP.
If the target switch has also enabled LACP on the connected ports, the trunk
will be activated automatically.
A trunk formed with another switch using LACP will automatically be assigned
the next available trunk ID.
If more than eight ports attached to the same target switch have LACP enabled,
the additional ports will be placed in standby mode, and will only be enabled if
one of the active links fails.
All ports on both ends of an LACP trunk must be configured for full duplex, and
auto-negotiation.
Ports are only allowed to join the same Link Aggregation Group (LAG) if (1) the
LACP port system priority matches, (2) the LACP port admin key matches, and
(3) the LAG admin key matches (if configured). However, if the LAG admin key is
set, then the port admin key must be set to the same value for a port to be
allowed to join that group.
The port’s LACP mode can be set (CLI only) to either Active or Passive.
Note:
If the LACP admin key is not set when a channel group is formed (i.e., it has a
null value of 0), the operational value of this key is set to the same value as the port
admin key used by the interfaces that joined the group (see the “show lacp
internal” command in the CLI Reference Guide).
Note:
The port LACP mode can be set to Active or Passive using the CLI interface
(see the “lacp mode” command in the CLI Reference Guide).
active
links
}
}
dynamically
enabled
configured
members
backup
link