Net Optics Director 사용자 설명서

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Be aware of these similar pairs of commands:
filter discard
 clears the pending filter list, while filter clear clears the CAM
filter list
 shows the pending filter list, while filter running shows the CAM
filter commit
 copies the pending filter list to the CAM, while filter sync copies the CAM to the pending filter list
Pending filter list
Address
Filter
1
2
    filter discard to clear
    filter list to view contents
CAM
Address
Filter
1
2
    filter clear to clear
    filter running to view contents
   filter commit
    filter sync
Pairs of similar filter commands
Figure 45: 
Filter capacity
The capacity of Director's filtering function is roughly 1,000 filter elements per chassis, where a filter element is 
a port list or a filter parameter. For example, filter add in_ports=n1.1-n1.7 ip_proto=6 vlan=100 action=redir
redir_ports=m.1-m.5,m.10 has four filter elements:
in_ports=n1.1-n1.7
1. 
ip_proto=6
2. 
vlan=100
3. 
redir_ports=m.1-m.5,m.10
4. 
Counting filter elements is only a rough gauge of filter utilization, and is not recommended. Instead, examine the 
pending filter list or CAM contents with filter list and filter running commands. The filter resource utilization is 
displayed after the filter list. 
Warning! ______________________________________________________________________________________________
User interactions
When multiple users are logged into Director at the same time, each user has a separate pending filter list in which to 
create filter configurations. However, there is only one CAM, so any time a user executes a commit or filter commit
command, the CAM takes on the filter configuration from that user's pending filter list, and those become the active 
filters on Director. For this reason, it is a good idea to use a filter sync command to get the current contents of the 
CAM before adding or modifying filters; that way, the filters that you don't touch remain unaffected after you commit.
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