Filter
Top Products
120
Intel
®
NetStructure™ 480T Routing Switch User Guide
You can download up to 7,000 MAC addresses to the switch when
using MAC-based VLANs. You can create up to 3,000 VLANs on
the switch.
FDB Contents
Each FDB entry consists of:
• The MAC address of the device
• An identifier for the port on which it was received
• An identifier for the VLAN to which the device belongs.
Frames destined for devices that are not in the FDB are flooded to
all members of the VLAN.
FDB Entry Types
There are four types of entries in the FDB:
• Dynamic entries
• Non-aging entries
• Permanent entries
• Blackhole entries
Dynamic Entries
Initially, all entries in the database are dynamic.
Entries in the database are removed (aged-out) if, after a period of
time (aging time), the device has not transmitted. This prevents the
database from filling with obsolete entries by deleting the entry
when a device is removed from the network.
Dynamic entries are deleted from the database if the 480T routing
switch is reset or a power off/on cycle occurs.
For information about
setting the aging time,
refer to "Configuring FDB
Entries" on page 122.
Non-aging Entries
If the aging time is set to zero, all aging entries in the database are
defined as static, non-aging entries. This means that they do not age,
but they are still deleted if the switch is reset.