Configuring Classifier Control Lists

This section describes how you create classifier control lists and classifier control list entries.

The NMC-RX application allows you to configure up to 512 classifier control list entries per classifier control list. Each classifier control list entry is automatically numbered when created.

Creating a Classifier Control List

You can create and list classifier control lists from the Device-wide Explorer. Double-click Classifier Control List in the Device-wide Explorer to list all classifier control lists defined on the current device.

You can also create and list classifier control lists from the System folder in the Instance Explorer and the Device-wide Explorer.

To create a classifier control list:

1. From the Device-wide Explorer, select Classifier Control Lists.
2. Right click, select Create, and click Classifier Control List.

The Create Classifier Control List dialog box appears.

3. Type the Classifier Control List Name with 1 to 40 characters.
4. Click OK.

A Creation complete message appears.

5. Click OK.

Creating a Classifier Control List Entry

Once you have created a classifier control list, you can configure a classifier control list entry.

From the Classifier Control List Entry dialog box, you can specify a protocol or set the IP flag or TCP flag by clicking the appropriate button. Clicking this button displays additional related dialog boxes. Many parameters are available only when a particular protocol is selected. See Table 8 for complete descriptions.

To create a classifier control list entry:

1. From the Device-wide Explorer, in the Policy Management folder, double-click Classifier Control Lists.

All classifier control lists defined on the current device appear in the list area of the Device Workshop.

2. Select a classifier control list from the list.
3. Right-click, select Create, and click Classifier Control List Entry.

The Create Classifier Control List Entry dialog box appears.

4. Set the parameters (Table 8).

 Table 8:  Classifier Control List Entry Parameters 

 Parameter
 Description

 List Name

 Identifier of the classifier control list of which this entry is a part; cannot edit


 Entry ID

 Identifier of this entry; value populated from device; cannot edit


 Match Packets with Protocol

 Not 

 Indicates that packets matched are not equal to the protocol specified


 Protocol

 Protocol matched (or not) by this classifier list entry; cannot edit; range 0-255
 Click 
 to select a protocol from the Select Protocol dialog box. See Related Dialog Boxes.


 Match Criteria

 IP Frag Offset

 IP fragmentation offset; options: Equal to 0, Equal to 1, Greater than 1, or None


 IGMP Type

 IGMP message type value; editable only when IGMP is the specified protocol; range 1-255


 IP Flags

 IP header flags for classification
 Click 
 to select an IP header flag from the Configure IP Flag dialog box. See Related Dialog Boxes.


 TCP Flags

 Transmission Control Protocol (TCP) header flags for classification. Active only when TCP is selected.
 Click 
 to select a TCP flag from the Configure TCP Flags dialog box. See Related Dialog Boxes.


 ToS Information

 Type

 Specifies how the type of service (ToS) information is set; options: ToS Value, Precedence, DS Field, or None


 Value

 Value set based on type selected. 

  
 ToS Value—Range 0-255; default 255
  
 Precedence—Range 0-7; default 7
  
 DS Field—Range 0-63; default 63



 ICMP Information

 Type

 Internet Control Message Protocol (ICMP) message type value; editable only when ICMP is the specified protocol; range 0-255


 Code

 ICMP message code value; editable only when ICMP is the specified protocol; range 0- 255


 Source/Destination Address

 Not 

 When checked, indicates that the packets matched have a source or destination address not equal to the specified address 


 IP Address

 Source or destination IP address matched (or not) by this classifier list entry; 0.0.0.0 is the wildcard; must be a valid IP address; default 0.0.0.0


 Mask

 Mask to apply to the source or destination address; default 0.0.0.0


 Source/Destination Ports

 Options

 Operation used to match ports to the specified From Port and To Port fields (if appropriate); editable only when TCP or User Datagram Protocol (UDP) is the specified protocol
 Options: no op, less than, greater than, equal to, not equal to, range; default: no op


 From Port

 Source or destination port number used in port comparisons; invalid only for no op; range 1-65535


 To Port

 End source or destination port number used in port range comparisons; valid only for range; range 1-65535



 

5. Click OK.

The Creation complete message appears. Note that the classifier control list entry is automatically numbered.

6. Click OK.

Related Dialog Boxes

This section presents the procedures for setting the classifier control list parameters in the Create Classifier Control List Entry dialog box.

Select Protocol

The Select Protocol dialog box appears when you click next to the Protocol field.

1. Either click a protocol in the list, or manually specify a different protocol by typing the protocol number in the Selected Protocol box. The range is 0-255.
2. Click OK.

The protocol you selected appears in the Protocol field in the Create Classifier Control List Entry dialog box.

Configure IP Flags

The Configure IP Flags dialog box appears when you click next to the to the IP Flags field. Use it to select an IP flag.

1. In the Selected column, select the IP flags that you want as part of the result string.
2. In the Not column, select the "not" operator(s) that you want applied to the corresponding flag in the result string.
   

   NOTE: The check box in the Not column cannot be checked unless the check box in the corresponding Selected column is checked first.

   
   
3. Click OK.

The IP flags you selected appear to the right of the IP Flags field in the Classifier Control List Entry dialog box.

Configure TCP Flags

The Configure TCP Flags dialog box appears when you click next to the TCP Flags field. Use it to select a TCP flag.

1. In the Selected column, select the TCP flags you want as part of the result string.
2. In the Not column, select the "not" operator(s) that you want applied to the corresponding flag in the result string.
   

   NOTE: The check box in the Not column cannot be checked unless the check box in the corresponding Selected column is checked first.

   
   
3. Click OK.

The TCP flag you selected appears to the right of the TCP Flags field in the Classifier Control List Entry dialog box.