Brocade Communications Systems 53-1002163-02 manual Lacp configuration guidelines and restrictions

LACP configuration guidelines and restrictions 8

LAG distribution process

The LAG aggregator is associated with the collection and distribution of Ethernet frames. The collection and distribution process is required to guarantee the following:

•Inserting and capturing control PDUs.

•Restricting the traffic of a given conversation to a specific link.

•Load balancing between individual links.

•Handling dynamic changes in LAG membership.

LACP configuration guidelines and restrictions

This section applies to standards-based and Brocade-proprietary LAG configurations except where specifically noted otherwise.

Follow these LACP configuration guidelines and restrictions when configuring LACP:

•All ports on the Brocade FCoE hardware can operate only in full-duplex mode.

•QoS—In the Fabric OS version 7.0.0 release, QoS commands for a LAG need to be specified on each LAG member link, instead of on the logical LAG interface (port-group). Additionally, the QoS commands specified on each LAG member link need to be the same on each link.

•Brocade-proprietary LAGs only—All LAG member links need to be part of the same port-group.

•Switchport interfaces—Interfaces configured as “switchport” interfaces cannot be aggregated into a LAG. However, a LAG can be configured as a switchport.

Default LACP configuration

Table 19 lists the default LACP configuration.

TABLE 19	Default LACP configuration
Parameter		Default setting
System priority		32768
Port priority		32768
Timeout		Long (standard LAG) and short (Brocade LAG)

LACP configuration and management

You need to enter either the copy running-configstartup-configcommand or the write memory command to save your configuration changes to Flash memory so that they are not lost if there is a system reload or power outage.

Enabling LACP on an CEE interface

To add additional interfaces to an existing LAG, repeat this procedure using the same LAG group number for the new interfaces.

Converged Enhanced Ethernet Administrator’s Guide	83
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