Configuring the SiteWinLink User and Installation Guide Version 1.750 5-953. Select the communities to be changed by clicking the check box.4. Type the new community and re-type to confirm.5. Click OK to save.Figure 5-19: Changing the Community StringForgotten Community stringIf the read-write community string is unknown, an alternativecommunity key can be used. The alternative community key is uniqueper ODU and can be used only in order to change the communitystrings. The alternative community key is supplied with the product,and it is recommended to keep it safe.If both the read-write community and the alternative community keyare unavailable, then an alternative community key can be obtainedfrom customer support using the ODU serial number or MAC address.The serial number is located on the product, and the MAC address isdisplayed in the manager inventory tab.