To add parent proxies to an ICP neighborhood

Steps

1. Access the Server Manager, and click the Caching tab.

2. Click the Configure ICP link.

   The Configure ICP page displays.

3. In the Parent List section of the page, click the Add button.

   The ICP Parent page displays.

4. In the Machine Address field, enter the IP address or host name of the parent proxy you are adding to the ICP neighborhood.

5. In the ICP Port field, enter the port number on which the parent proxy will listen for ICP messages.

6. In the Multicast Address field, you can enter the multicast address to which the parent listens. A multicast address is an IP address to which multiple servers can listen.

   Using a multicast address allows a proxy to send one query to the network that all neighbors who are listening to that multicast address can see; therefore, eliminating the need to send a query to each neighbor separately. Using multicast is optional.

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   Note –

   Neighbors in different polling rounds should not listen to the same multicast address.

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7. In the TTL field, enter the number of subnets that the multicast message will be forwarded to.

   If the TTL is set to 1, the multicast message will only be forwarded to the local subnet. If the TTL is 2, the message will go to all subnets that are one level away, and so on.

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   Note –

   Multicast makes it possible for two unrelated neighbors to send ICP messages to eachother. Therefore, if you want to prevent unrelated neighbors from receiving ICP messages from the proxies in your ICP neighborhood, you should set a low TTL value in the TTL field.

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8. In the Proxy Port field, enter the port for the proxy server on the parent.

9. From the Polling Round drop-down list, choose the polling round that you want the parent to be in. The default polling round is 1.

10. Click OK.

11. Click Restart Required.

    The Apply Changes page displays.

12. Click the Restart Proxy Server button to apply the changes.