BLADE OS™ Application Guide HP GbE2c Ethernet Blade Switch for c-Class BladeSystem Version 5.1 Advanced Functionality Software

Table Of Contents
BLADE OS 5.1 Application Guide
BMD00113, September 2009 Chapter 14: High Availability 233
Configuration Guidelines
This section provides important information about configuring Layer 2 Failover.
Note – Auto Monitor and Manual Monitor are mutually exclusive. They cannot both be configured
on the switch.
Auto Monitor Guidelines
Any specific failover trigger may monitor static trunks only or LACP trunks only, but not both.
All uplink ports in all static or LACP trunks added to any specific failover trigger must belong
to the same VLAN.
A maximum of two LACP keys can be added per trigger.
When VLAN Monitor is on, the following additional guidelines apply:
All uplink ports in all static or LACP trunks added to a specific failover trigger must
belong to the same VLAN and have the same PVID.
Different triggers are not permitted to operate on the same VLAN.
Different triggers are not permitted to operate on the same downlink port.
For each port in each trunk in a specific failover trigger, the trigger will monitor the STP
state on only the default PVID.
Manual Monitor Guidelines
A Manual Monitor can monitor only uplink ports.
Any specific failover trigger can monitor uplink ports only, static trunks only, or LACP trunks
only. The different types cannot be combined in the same trigger.
A maximum of two LACP keys can be added per trigger.
Port membership for different triggers should not overlap. Any specific port should be a
member of only one trigger.