LACP-MAD commands
Configuration command
The following command defines whether LACP is enabled on a port, and whether it is in active or passive mode
when enabled. When LACP is enabled and active, the port sends LACP packets and listens to them. When LACP
is enabled and passive, the port sends LACP packets only if it is spoken to. When LACP is disabled, the port
ignores LACP packets. If the command is issued without a mode parameter, 'active' is assumed. During dynamic
link aggregation using LACP, ports with the same key are aggregated as a single trunk. MAD passthrough applies
only to trunks and not to physical ports.
switch# [no] interface <port-list> lacp [mad-passthrough <enable|disable>|active|passive|key <key>]
show commands
LACP-MAD supports the following show commands:
• show LACP-MAD passthrough configuration on LACP trunks
switch# show lacp [counters [<port-list>] | local [<port-list>] |peer [<port-
list>] | distributed | mad-passthrough [counters [<port-list>]]]
• show LACP-MAD passthough counters on ports
switch# show lacp mad-passthrough counters [<port-list>]
clear command
Clear all LACP statistics including MAD passthrough counters. Resets LACP packets sent and received on all
ports.
switch# clear lacp statistics
LACP-MAD overview
Link Aggregation Control Protocol-Multi-Active Detection (LACP-MAD) is a detection mechanism deployed by
switches to recover from a breakup of the Virtual Switching Framework (VSF) stack due to link or other failure.
LACP-MAD is implemented by sending extended LACP data units (LACPDUs) with a type length value (TLV) that
conveys the active ID of an VSF virtual device. The active ID is identical to the member ID of the master and is
thus unique to the VSF virtual device. When LACP MAD detection is enabled, the members exchange their active
IDs by sending extended LACPDUs.
Chapter 12
LACP-MAD
256 Aruba 2530 Management and Configuration Guide for
ArubaOS-Switch 16.05
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