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9-18 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Chapter 9
Persistence The persistence of the entry in the table can be set on all
learned entries:
• Permanent - The address is not aged out of the table.
• Invalid - This entry is cleared from the table each time
the switch resets.
• Ageout - Address is cleared from the address forwarding
table when the timeout interval expires. This is the state
of all entries dynamically learned by the switch. It
ensures that MAC addresses that are not active on the
network do not remain in the switch address forwarding
table indefinitely.
Note:
If you create a static, filtered MAC address and set
Persistence to Ageout, the switch does not filter the
MAC address. The switch continues to forward
frames that have the MAC address for a source
address or destination address. To correct this, set
Persistence to Permanent.
Status The status of the address entry.
Options include:
• Learned
• Management
• Self AFT Self Entries:
• 01:80:C2:00:00:00 - 01:80:c2:00:00:0F - 802.1D
reserved addresses, the first entry is the Spanning Tree
BPDU destination address.
• 09:00:4E:00:01:02 - 3Com Vlan Trunk (VLT) control
frame address. Used for Spanning Tree blocked ports that
are in 3Com tagging mode and connected to a port on the
other side of a connection that is blocked by Spanning
Tree.
• 01:00:0C:CC:CC:CC - Cisco control frame. Used to
synchronize VLAN membership across switches (VTPs)
or router information between routers (CDPs). The
switch sends them to the CPU, the CPU will set the
BPDU bit when transmitting out a port trunking ISL.
• 01:00:0C:DD:DD:DD - If Cisco Group Management
Protocol (CGMP) is enabled, the switch may listen to
gather multicast group information
Table 9-4. Address Forwarding Table Parameters
Parameter Defines the...
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