System Administration Guide: Network Services

ProcedureHow to Configure the Multicast Time-to-Live Property

Use the following procedure to reset the net.slp.multicastTTL property.

  1. Become superuser 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. Stop slpd and all SLP activity on the host.

    # svcadm disable network/slp
  3. Back up the default /etc/inet/slp.conf file before you change the configuration settings.

  4. Change the net.slp.multicastTTL property in the slpd.conf file:


    A positive integer less than or equal to 255 that defines the multicast TTL

    Note –

    You can reduce the range of multicast propagation by reducing the TTL value. If the TTL value is 1, then the packet is restricted to the subnet. If the value is 32, the packet is restricted to the site. Unfortunately, the term site is not defined by RFC 1075, where multicast TTLs are discussed. Values above 32 refer to theoretical routing on the Internet and should not be used. Values below 32 can be used to restrict multicast to a set of accessible subnets, if the routers are properly configured with TTLs.

  5. Save your changes and close the file.

  6. Restart slpd to activate your changes.

    # svcadm enable network/slp