Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ucbvax!OKEEFFE.BERKELEY.EDU!karels From: karels@OKEEFFE.BERKELEY.EDU (Mike Karels) Newsgroups: comp.protocols.tcp-ip Subject: Re: micro-vax with more than one ether-net board? Message-ID: <8712122103.AA22653@okeeffe.Berkeley.EDU> Date: 12 Dec 87 21:03:45 GMT Sender: daemon@ucbvax.BERKELEY.EDU Distribution: world Organization: The ARPA Internet Lines: 20 We are using a Microvax II with 5 ethernet interfaces and a DMV-11 56 kbaud serial interface as a gateway. It's running 4.3BSD, not Ultrix. (I would strongly recommend the use of 4.3; Ultrix IP code is based on the 4.3 alpha release from July 1985, and the IP forwarding and option handling and ICMP received a lot of work after that time.) Our configuration includes two DEQNA ethernet interfaces and three Excelan interfaces; we're obviously using the "world box" BA123 cabinet, as the BA23 doesn't have nearly enough power for all of this. Use of more than two DEQNA's would require modification of the board, and is clearly not worth considering. (I suspect that the limitation is due to the FCC radiation limits already mentioned.) In addition to the Excelan and DEQNA interfaces, 4.3 includes drivers for Interlan NI1010 and NP100 UNIBUS interfaces; at least the latter has a compatible Q-bus interface. (I doubt that there are Q-bus controllers that are compatible with the 3Com or DEUNA/DELUA UNIBUS interfaces, although we have drivers for those, too.) Our Microvax gateway has been very reliable; it recently went down when a hardware tech was rearranging cables after 126 days up. Mike