3Com Switch 7700 Configuration Manual page 48

40 C 2: P C
HAPTER ORT ONFIGURATION
to a static one. In the former case, LACP shall be disabled at the member ports
automatically, while in the latter case, LACP shall remain enabled.
Adding or Deleting Ethernet Ports to or from an Aggregation Group
You can add/delete ports into/from a manual or static LACP aggregation group,
but member port adding or deleting for a dynamic LACP aggregation group is
implemented by the system.
Perform the following configuration in corresponding view.
Table 19 Add/Delete Ethernet Port to/from Aggregation Group
Operation
Add an Ethernet port into the aggregation
group (Ethernet port view)
Delete an Ethernet port from the aggregation
port (Ethernet port view)
Aggregate Ethernet ports (System view)
Note that:
You cannot enable LACP at the mirrored port, port with static MAC address
■
configured, port with static ARP configured, port with 802.1x enabled.
You must delete the aggregation group, instead of the port, if the manual or
■
static LACP aggregation group contains only one port.
Setting or Deleting an Aggregation Group Descriptor
Perform the following configuration in system view.
Table 20 Set/Delete an Aggregation Group Descriptor
Operation
Set aggregation group descriptor
Delete aggregation group descriptor
By default, an aggregation group has no descriptor.
Note that if you have saved the current configuration with the save command,
the configured manual aggregation groups, static LACP aggregation groups and
corresponding descriptors will be retained when the system reboots. However, the
dynamic LACP groups and descriptors are not retained when the system reboots.
Configuring System Priority
The LACP refers to system IDs in determining if the member ports are selected or
standby one for a dynamic LACP aggregation group. The system ID consists of
two-byte system priority and six-byte system MAC, that is, system ID = system
priority + system MAC. In comparing system IDs, the system first compares system
priority values; if they are equal, then it compares system MAC addresses. The
smaller system ID is considered prior.
Changing system priority may affect the priority levels of member ports, and
further their selected or standby state.
Command
port link-aggregation group agg-id
undo port link-aggregation group
link-aggregation interface_name1 to
interface_name2 [ both ]
Command
link-aggregation group agg-id description
alname
undo link-aggregation group agg-id
description