Cabletron Systems SPECTRUM, User Manual

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The Filtering Database Window 6-17
Using the 7C0x SmartSwitch Bridge View
The Ageing Time determines how long a Forwarding entry (or a Static entry with
deleteOnTimeout status) is retained before being discarded due to inactivity. Use
the Change Ageing Time button to set a new Ageing Time; see the following
section for details.
Use the Find button to search the Filtering Database for a specific MAC address;
see Finding a Filtering Database MAC Address,
page 6-20 .
The Filtering Database window shows a snapshot of the database. Clicking
mouse button 1 on the Update button displays the current database.
Changing the Filtering Database Dynamic Ageing Time
The Dynamic Ageing Time determines how long an entry remains in the Filtering
Database before being purged due to inactivity. Purging older entries ensures that
the Filtering Database is always using current information to make filter/forward
decisions.
To change the Dynamic Ageing Time:
1. In the Filtering Database window, click mouse button 1 on the Change
Ageing Time button to open the Change Ageing Time window.
Figure 6-8. Changing the Filtering Database Ageing Time
NOTE
During a topology change, the Forward Delay is used as the Filtering Database Ageing
Time, which ensures that the Filtering Database will contain current topology
information.
2. Highlight and edit the Ageing Time
(in seconds), and then click mouse
button 1 on the Apply button.
or
Use mouse button 1 to drag the slide
bar, then click Apply.
or
Click mouse button 1 next to the slide
to increment the time in 100 second
jumps, then click Apply.
As you change the ageing time,
SPMA converts seconds to
days:hours:minutes:seconds.