Configuring the WSM using Device Manager

Defining WSP content to check

The content of the WSP/UDP packet sent to the gateway can be configured as a hexadecimal string, encapsulated in a UDP packet, and shipped to the server. This byte string should include all applicable WSP headers.

The content that the WSM expects to receive from the gateway is also specified in a hexadecimal byte string. The WSM matches each byte of this string with the received content.

If there is a mismatch of even a single byte on the received content, the gateway fails the health check. You can also configure an offset for the received WSP packet: a byte index to the location in the WSP response content where the byte match can be performed.

To define the WSP content to check:

1. From the device view, select the Web Switching Module.

The Web Switching Module is highlighted.

2. From the Edit menu, choose WSM Card > L4 Switching> WAP.

The WAP dialog box opens to the General tab.

3. In the WSP Port to Health Check field, type the WSP port number (9200 is the default) on which WSP health checks are performed.
4. In the Offset into WSP Packet field, type an offset from 0 - 256. If set to 0 (the default) comparisons start at the beginning of the received packet's content.
5. In the Health Content to Send to WAP Gateway field, type a hexadecimal string of up to 255 characters to be examined during the health check.
6. In the Expected Health Content from WAP Gateway field, type a hexadecimal string of up to 255 characters for the gateway response to match.
7. Click Set > Apply.

An Information dialog box opens reminding you to save the configuration.

8. Click OK.

The Information dialog box closes.

9. From the General tab, click Close.

The content for the WSP health check is configured.

10. To save the change, right-click the WSM card and choose one of the following from the shortcut menu:
• Save configuration (backup)--Saves changes to the active and backup WSM configuration blocks.
• Save configuration (no backup)--Saves changes to the active WSM configuration block.

See also:

• Configuring WSP content health checks
• Configuring the UDP service for WSP health check
• Configuring WTLS health checks
• Wireless application server load balancing
• About health checking
• Script-based health checking
• Direct server return health checking
• ICMP health checking
• ARP health checking
• Link health checking
• TCP health checking
• Modifying the health check interval and retries
• Application health checking
• About health checking