Types Of Mac Address Entries; Mac Address Table Configuration Task List - HP FlexFabric 12900 Series Configuration Manual

of port A. Other hosts using the forged MAC address of Host A cannot obtain the frames destined for
Host A.

Types of MAC address entries

A MAC address table can contain the following types of entries:
Static entries—A static entry is manually added to forward frames with a specific destination MAC
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address out of the associated interface, and it never ages out. A static entry has higher priority than
a dynamically learned one.
Dynamic entries—A dynamic entry can be manually configured or dynamically learned to forward
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frames with a specific destination MAC address out of their associated interfaces. A dynamic entry
might age out. A manually configured dynamic entry has the same priority as a dynamically
learned one.
• Blackhole entries—A blackhole entry is manually configured and never ages out. A blackhole entry
is configured for filtering out frames with a specific source or destination MAC address. For example,
to block all frames destined for or sourced from a user, you can configure the MAC address of the
user as a blackhole MAC address entry.
Multiport unicast entries—A multiport unicast entry is manually added to send frames with a
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specific unicast destination MAC address out of multiple ports, and it never ages out. A multiport
unicast entry has higher priority than a dynamically learned one.
A static, blackhole, or multiport unicast MAC address entry can overwrite a dynamic MAC address entry,
but not vice versa.

MAC address table configuration task list

The configuration tasks discussed in the following sections can be performed in any order.
This document covers only the configuration of unicast MAC address entries, including static, dynamic,
blackhole, and multiport unicast MAC address entries. For information about configuring static multicast
MAC address entries, see IP Multicast Configuration Guide. For information about MAC address table
configuration in VPLS, see MPLS Configuration Guide.
To configure the MAC address table, perform the following tasks:
Tasks at a glance
(Optional.)
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Adding or modifying a static or dynamic MAC address entry globally
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Adding or modifying a static or dynamic MAC address entry on an interface
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Adding or modifying a blackhole MAC address entry
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Adding or modifying a multiport unicast MAC address entry
(Optional.)
(Optional.)
(Optional.)
(Optional.)
reached
(Optional.)
Configuring MAC address entries
Disabling MAC address learning
Configuring the aging timer for dynamic MAC address entries
Configuring the MAC learning limit on interfaces
Configuring the device to forward unknown frames after the MAC learning limit on an interface is
Enabling MAC address synchronization
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