Management and Configuration Guide K/KA/KB.15.15

value of the Operational key. The Admin and Operational key are usually the same, but using
static LACP can alter the Operational key during runtime, in which case the keys would differ.
The lacp key command configures both the Admin and Operational keys when using dynamic
LACP trunks. It only configures the Admin key if the trunk is a static LACP trunk. It is executed in
the interface context.
Static trunk
The switch uses the links you configure with the Port/Trunk Settings screen in the menu interface
or the trunk command in the CLI to create a static port trunk. The switch offers two types of static
trunks: LACP and Trunk.
Table 9 Trunk types used in static and dynamic trunk groups
TrunkLACPTrunking method
NoYesDynamic
YesYesStatic
Table 10 describes the trunking options for LACP and Trunk protocols.
Table 10 Trunk configuration protocols
Trunking OptionsProtocol
Provides dynamic and static LACP trunking options.LACP (802.3ad)
• Dynamic LACP — Use the switch-negotiated dynamic
LACP trunk when:
• The port on the other end of the trunk link is
configured for Active or Passive LACP.
• You want fault-tolerance for high-availability
applications. If you use an eight-link trunk, you can
also configure one or more additional links to
operate as standby links that will activate only if
another active link goes down.
• Static LACP — Use the manually configured static LACP
trunk when:
• The port on the other end of the trunk link is
configured for a static LACP trunk.
• You want to configure non-default spanning tree or
IGMP parameters on an LACP trunk group.
• You want an LACP trunk group to operate in a VLAN
other than the default VLAN and GVRP is disabled.
• You want to use a monitor port on the switch to
monitor an LACP trunk.
Provides manually configured, static-only trunking to:Trunk
(non-protocol)
• Most HP Switch and routing switches not running the
802.3ad LACP protocol.
• Windows NT and HP-UX workstations and servers
Use the Trunk option when:
• The device to which you want to create a trunk link is
using a non-802.3ad trunking protocol.
• You are unsure which type of trunk to use, or the device
to which you want to create a trunk link is using an
unknown trunking protocol.
• You want to use a monitor port on the switch to monitor
traffic on a trunk.
Trunk configuration methods 147