Configuring Confederation (NSM Procedure)

Grouping autonomous systems (ASs) into confederations reduces the number of BGP connections required to interconnect ASs. If you administer multiple ASs that contain many BGP systems, you can group them into one or more confederations. Each confederation is identified by its own AS number, which is called a confederation AS number. To external ASs, a confederation appears to be a single AS. Thus, the internal topology of the ASs (members) making up the confederation is hidden. Because each confederation is treated as if it were a single AS, you can apply the same routing policy to all the ASs that make up the confederation.

To configure a confederation in NSM:

  1. In the navigation tree, select Device Manager > Devices .
  2. In the Devices list, double click the device to select it.
  3. Click the Configuration tab.
  4. In the configuration tree, expand Routing Options.
  5. Select Confederation.
  6. Add or modify the parameters as specified in Table 53.
  7. Click one:
    • OK—To save the changes.
    • Cancel—To cancel the modifications.
    • Apply—To apply the routing option settings.

Note: After you make changes to a device configuration, you must push that updated device configuration to the physical security device for those changes to take effect. You can update multiple devices at one time. See the Updating Devices section in the Network and Security Manager Administration Guide for more information.

Table 53: Confederation Fields



Your Action


Specifies the comment for the confederation.

Enter a comment.

Confederation As

Specifies the confederation AS number.

Enter a number from 1 through 65535.


Specifies the AS number of the confederation member, allowing you to add members to the confederation.

  1. Expand the Confederation tree and select Members.
  2. Click the New button or select a member and click the Edit button.
  3. Enter the AS number of the member.