Configuring A Service Loopback Group; Service Type; Preparing Service Loopback Ports; Port States - HP A5830 Configuration Manual

Configuring a service loopback group

To increase traffic redirecting throughput, bundle multiple Ethernet ports of a device together, to increase
bandwidth and implement load sharing. The ports that act as a logical link form a service loopback
group. A service loopback group must contain at least one Ethernet port as its member port, called a
service loopback port.
For example, by assigning three Ethernet ports of the same device to a service loopback group, you can
create a logical link whose bandwidth can be as high as the total bandwidth of these three ports. In
addition, service traffic is load balanced among these ports.

Service type

The service loopback group supports the tunnel type, which handles unicast tunnel traffic.

Preparing service loopback ports

Before you assign a port to a service loopback group, make sure you have met the following conditions:
The port supports the services type or types of the service loopback group.

The port is not configured with MSTP, LLDP, 802.1X, MAC address authentication, port security

mode, packet filtering, Ethernet frame filtering, or IP source guard, or as the member port of an
isolation group.
 The link type of the port is access.
 The port is not a member of any Ethernet link-aggregation group or service loopback group.

Port states

A member port in a service loopback group is a service loopback port, which can be in either of the
following states:
Selected: A selected port can loop back user traffic.

Unselected: An unselected port cannot loop back user traffic.

The number of selected ports is limited in a service loopback group.
Setting service loopback port state
The system sets the state of each member port in a service loopback group to selected or unselected by
using the following workflow.
Select the full-duplex port with the highest rate as the reference port. If two ports have the same
1.
duplex mode and speed, the one with the lower port number wins.
Set the state of each member port in the service loopback group.
2.
204