RFC 1877 (rfc1877) - Page 3 of 6

PPP Internet Protocol Control Protocol Extensions for Name Server Addresses

RFC 1877                  PPP IPCP Extensions              December 1995


   Primary-DNS-Address

      The four octet Primary-DNS-Address is the address of the primary
      DNS server to be used by the local peer.  If all four octets are
      set to zero, it indicates an explicit request that the peer
      provide the address information in a Config-Nak packet.

   Default

      No address is provided.

1.2.  Primary NBNS Server Address

   Description

      This Configuration Option defines a method for negotiating with
      the remote peer the address of the primary NBNS server to be used
      on the local end of the link.  If local peer requests an invalid
      server address (which it will typically do intentionally) the
      remote peer specifies the address by NAKing this option, and
      returning the IP address of a valid NBNS server.

      By default, no primary NBNS address is provided.

   A summary of the Primary NBNS Address Configuration Option format is
   shown below.  The fields are transmitted from left to right.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Type      |    Length     |      Primary-NBNS-Address
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      Primary-NBNS-Address (cont)  |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Type

      130

   Length

      6

   Primary-NBNS-Address

      The four octet Primary-NBNS-Address is the address of the primary
      NBNS server to be used by the local peer.  If all four octets are
      set to zero, it indicates an explicit request that the peer



Cobb                         Informational