Configuring the SiteWinLink User and Installation Guide Version 1.750 5-94Changing Community ValuesThe ODU communicates with the management application usingSNMPv1 protocol. The protocol defines three types of communities:• Read-Only for retrieving information from the ODU• Read-Write to configure and control the ODU• Trap used by the ODU to issue traps.The community string must be entered at login. The user must knowthe password and the correct community string in order to gain accessto the system. A user may have read-only privileges.It is not possible to manage the ODU if the read-write or the readcommunity values are forgotten. A new community value may beobtained from technical support for the purpose of setting newcommunity; the serial number or the MAC address of the ODU must besupplied.Note:The manager application and the ODU use the community stringspublic-bru1 for the local unit and public-bru4097 for the remoteunit. These are the factory defaults, but can only be used one time onthe first installation.A new community string must be set when entering the system for thefirst time. The read-write community and read-only community have aminimum of five alphanumeric characters. (Bru1 and bru4097 are notpermitted). Changing the trap community is optional by clicking thecheck box.Editing Community StringsThe community change dialog box is available from theConfiguration > Security tab. Both read-write and read-onlycommunities must be defined.On entering for the first time, use the following as the currentcommunity:• For Read/Write community, use netman.• For Read Only community, use public.• For Trap community, use public-bru1.Æ To change a community:1. From the Configuration dialog box, select the Security tab2. Type the current read-write community (default is netman).
