Device Online Help

Creating a DVMRP announce policy

Before you can apply an announce policy to an interface, VLAN, or port, you must first create the announce policy.

You can create one or more IP prefix lists and apply that list to any IP route policy. A prefix list with a 32 bit mask is equivalent to an address. A prefix list with a mask less than 32 bits can be used as a network. If you configure the MaskLenFrom field to be less than MaskLenUpto field, it can also be used as a range.

To create a DVMRP announce policy:

1. From the Device Manager menu bar, choose IP Routing > Policy.

The Policy dialog box opens with the Prefix List tab displayed.

2. Click Insert.

The Policy, Insert Prefix List dialog box displays.

3. Create a prefix list for the new policy by entering the following information in the Policy, Insert Prefix List dialog box.
1. An ID for the prefix list (unique number) in the Id field.
2. An IP address in the Prefix field.
3. The length of the prefix mask (range is 0 to 32) in the PrefixMaskLen field.
4. A name for the prefix list in the Name field.
4. Click Insert.
   
   

   Field	Description
   ID	The list identifier.
   Prefix	The IP address and mask.
   PrefixMaskLen	This is the specified length of the prefix mask. The range is 0 to 32.
   Name	Identifies a specific prefix list during the creation process. The name length can be have from 1 to 64 characters.
   MaskLenFrom	A value that specifies the lower bound of mask length. The default is the mask length.
   MaskLenUpto	A value that specifies the higher bound mask length. The default is the mask length.

   
   
5. Repeat step 3 to include additional IP addresses for the prefix list you created.

You can also create additional prefix lists by repeating step 3.

6. From the Policy dialog box, click the Route Policy tab.

The Route Policy tab opens.

7. Click Insert.

The Policy, Insert Route Policy dialog box opens.

8. Create the new policy by entering the following information in the Policy, Insert Route Policy dialog box:
   
   

   Note: Not all the fields in the Policy, Insert Route Policy dialog box apply to the process of creating a DVMRP policy.

   
   
1. In the Id field, enter a number for the policy.
2. In the SequenceNumber field, enter a policy sequence number (range is 1 to 65,535).
3. In the Name field, specify the name of the policy.
4. Select the DVMRP checkbox in the MatchProtocol field.
5. Enter the applicable name(s) of the prefix lists you created in Steps 3 and 5 in the MatchNetwork, MatchIPRouteSource, and MatchNextHop fields.

You can enter a single or several prefix lists. You can select up to four lists. To enter the names of the prefix list(s), click the ellipse button to the right of the field, select the appropriate name(s) from the dialog box, and click OK. To select multiple names, use the CTRL key. To deselect an entry, use the ALT key.

6. In the MatchMetric field, enter a value (range is 0 to 65,535)
7. In the SetMetric field, enter a value (range is 0 to 65,535)
8. Click Insert.
   
   

   Field	Description
   Id	The ID of an entry in the Prefix list table.
   SequenceNumber	A second index used to identify a specific policy within a route policy group.
   Name	The name of the route policy.
   MatchProtocol	Selects the appropriate protocol. Matches the protocol through which the route is learned, if configured.
   MatchNetwork	Matches the destination network against the contents of the specified prefix list, if configured.
   MatchIpRouteSource	Matches the previous hop IP addresses for DVMRP routes against the contents of the specified prefix list, if configured. Click the ellipse button and choose from the list in the Match Route Source dialog box. You can select up to four entries. To deselect an entry, use the ALT key. Note: This field can also be changed in the Route Policy tab of the Policy dialog box.
   MatchNextHop	Matches the previous hop IP address of the route against the contents for the specified prefix list. This field applies only to non-local routes, if configured. Click the ellipse button and choose from the list in the Match Next Hop dialog box. You can select up to four entries. To deselect an entry, use the ALT key.
   MatchMetric	Matches the metric of the incoming advertisement or existing route against the specified value (1to 655535). If 0, then this field is ignored, if configured. The default is 0.
   MatchInterface	If configured, the switch matches the IP address of the interface by which the RIP route was learned against the contents of the specified prefix list. This field is used only for RIP routes and ignored for all other type of route. (applies to RIP routes only.) Click the ellipse button and choose from the list in the Match Interface dialog box. You can select up to four entries. To deselect an entry, use the ALT key.
   MatchRouteType	Sets a specific route-type to be matched (applies only to OSPF routes). Externaltype1, and Externaltype2 specify the OSPF routes of the specified type only. OSPF internal refers to intra and inter area routes.
   MatchAsPath <as-list>	If configured, the switch matches the as-path attribute of the BGP routes against the contents of the specified as-lists. This field is used only for BGP routes and ignored for all other type of route. <as-list> specifies the list id of up to four defined as-lists separated by a comma. [clear] when presents, the as-list configured will be removed.

   
   
9. From the Policy dialog box, click the DVMRP In/Out Policy tab.

The DVMRP In/Out Policy tab opens. The Enable field indicates the current status (true is enabled; false is disabled).

10. Right click in the OutPolicy name field of the DVMRP interface to which you want to apply the announce policy and select the appropriate policy name from the PolicyName dialog box.
11. Click Apply to save the new configuration.