Tim is correct about the alias component of UCX. The newer 'TCPIP Services for VMS' version 5.3 that I'm running on our site does have a better alternative - there is software included, namely TCPIP LOAD BROKER - that seems to do quite a decent job of emulating load balancing using the same parameters as LAT (so says the manual). I have it updating the alias every 90 seconds.
David Taubner CIS Systems Administrator Health Sciences Centre Winnipeg, Manitoba Canada -----Original Message----- From: Tim Oakley [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 10, 2002 11:23 AM To: [EMAIL PROTECTED] Subject: How to add an IP alias with UCX much the way you would The UCX command 'set interface/clus' allows multiple VMS cluster nodes to share a 'cluster' ip adress, however it does not work the same as a DECnet alias where a semblance of load balancing is involved. Instead a cluster alias results in one of the named servers dealing with all IP traffic directed to the alias adress. The machine which 'holds' the adress is called the 'impersonator' in UCX speak. If the current 'impersonator' is shutdown or crashes then one of the other configured nodes takes over as impersonator automatically without intervention from support folks. Very fault tolerant but unfortunately no concept of load sharing. ��������������������������������������������� Tim OAKLEY MAURY-Imprimeur, Z.I, Route d'Etampes 45330 MALESHERBES Cedex France voice: (33) 02.38.32.34.38 fax: (33) 02.38.32.37.72 email: [EMAIL PROTECTED]
