HP Aruba JL253A Management And Configuration Manual page 144

Table 13: LACP trunk types
LACP port trunk
configuration
Dynamic LACP
Static LACP
144
Operation
This option automatically establishes an 802.3ad-compliant trunk group, with
LACP for the port Type parameter and DynX for the port Group name, where X is
an automatically assigned value from , depending on how many dynamic and
static trunks are currently on the switch. (The switch allows a maximum of 60
trunk groups in any combination of static and dynamic trunks.)
Dynamic LACP trunks operate only in the default VLAN (unless GVRP is enabled
and Forbid is used to prevent the trunked ports from joining the default VLAN).
Thus, if an LACP dynamic port forms using ports that are not in the default VLAN,
the trunk automatically moves to the default VLAN unless GVRP operation is
configured to prevent this from occurring. In some cases, this can create a traffic
loop in your network. For more information on this topic, see VLANs and
dynamic LACP on page 148 .
Under the following conditions, the switch automatically establishes a dynamic
LACP port trunk group and assigns a port Group name:
• The ports on both ends of each link have compatible mode settings (speed
and duplex).
• The port on one end of each link must be configured for LACP Active and the
port on the other end of the same link must be configured for either LACP
Passive or LACP Active. For Example:
Either of the above link configurations allows a dynamic LACP trunk link.
Backup Links: A maximum of eight operating links are allowed in the trunk, but,
with dynamic LACP, you can configure one or more additional (backup) links that
the switch automatically activates if a primary link fails. To configure a link as a
standby for an existing eight-port dynamic LACP trunk, ensure that the ports in
the standby link are configured as either active-to-active or active-to-passive
between switches.
Displaying dynamic LACP trunk data: To list the configuration and status for a
dynamic LACP trunk, use the CLI show lacp command.
The dynamic trunk is automatically created by the switch and is not listed in the
static trunk listings available in the menu interface or in the CLI show trunk
listing.
Provides a manually configured, static LACP trunk to accommodate these
conditions:
Aruba 2930F / 2930M Management and Configuration Guide
for ArubaOS-Switch 16.08