System Administration Guide: Network Services

ProcedureHow to Diagnose and Fix Communications Problems

Communications problems occur when the two peers cannot successfully establish a link. Sometimes these problems are actually negotiation problems that are caused by incorrectly configured chat scripts. The following procedure shows you how to clear communication problems. For clearing negotiation problems that are caused by a faulty chat script, see Table 21–5.

  1. Become superuser on the local machine or assume an equivalent role.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Call the peer.

  3. Call the remote peer. Then enable debugging features.

    % pppd debug call peer-name

    You might need to obtain debugging information from the peer in order to fix certain communications problems.

  4. Check the resulting logs for communication problems. For more information, refer to General Communications Problems That Affect PPP.