RFC 208 (rfc208) - Page 2 of 3
Address tables
Alternative Format: Original Text Document
RFC 208 Address Tables 9 August 1971 Report No. 1822 Bolt Beranek and Newman Inc. APPENDIX A IMP AND HOST SITE IDENTIFICATION Bit 9-16 of the leader of most Host-to-IMP or IMP-to-Host messages define a network address related to the message (these bits are not meaningful for message types 1, 2, and 4). In a Host-to-IMP message the network address identifies a particular Host to which the message should be delivered. In an IMP-to-Host message the network address identifies the Host from which the message originated. A network address consists of six bits (bits 11-16 of the leader) which specify an IMP number, preceded by two bits (bits 9-10 of the leader) which specify the Host number of a particular Host connected to that IMP. The table below gives the decimal values of IMP number, Host number, and network address for each Host currently connected to the ARPA Network or scheduled for connection in the near future. Scheduled installation dates are also shown for Hosts not currently connected; these dates, however, are subject to change without notice. IMP SITE HOST NETWORK SCHEDULED NUMBER NAME NUMBER HOST ADDRESS INSTALLATION ------ ---- ------ ---- ------- ------------ 1 UCLA 0 SIGMA-7 1 1 IBM 360/91 65 2 SRI 0 PDP-10 (NIC) 2 1 PDP-10 (Al) 66 3 UCSB 0 IBM 360/75 3 4 UTAH 0 PDP-lO 4 5 BBN 0 DDP-516 5 ) See Note 1 1 PDP-10 (A) 69 ) 2 PDP-1O (B) 133 Note 1: Prior to September 1, 1971 the BBN PDP-1O (A) will be Host number 0 (network address 5) and the BBN DDP-516 will be Host number 1 (network address 69). The address change is to be made during the day on 9/1/71. McKenzie
