Originally posted by: apple08

dear aix gurus,
would like to seek your advice. we have 3 ips on one network card (10.102.1.1, 10.103.1.42 and 10.103.1.41).
en2: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
inet 10.2.1.1 netmask 0xffff0000 broadcast 10.2.255.255
inet 10.103.1.42 netmask 0xffff0000 broadcast 10.103.255.255
inet 10.103.1.41 netmask 0xffff0000 broadcast 10.103.255.255
tcp_sendspace 131072 tcp_recvspace 65536

one is persistent ip and one is service ip. if an application want to connect, which ip should they use? what is different between persistent and physical ip. i understand the service ip is for fail over (ha or hacmp) or floating ip. hope to hear from you. thank you.

Originally posted by: orphy

Your application should use the service IP. Persistent IP is meant for admin purposes. You can learn more about both on the HACMP Planning Guide and the Concepts Guide.

You asked a lot of basic HACMP questions but most of them can be answered by the HA docs so I suggest you start using them. That also might get your questions answered faster.
Orphy

Originally posted by: apple08

i'll find in the google the document. bur mr orphy, we have shared 3 application in that server. 1 is using hacmp and the other 2 are not using it. if the non-hacmp application, we must use persistent ip i beleive right...

Originally posted by: orphy

The HACMP Infocenter is at

http://publib.boulder.ibm.com/infocenter/clresctr/vxrx/index.jsp?topic=/com.ibm.cluster.hacmp.doc/hacmpbooks.html

For the 2 non-ha apps, you might want to consider using non-ha resources. That might make things easier for you to manage. If I were you, I would not even use persistent label for that. I would try to avoid having the non-ha apps touching anything related to HACMP, including NICs and would simply use AIX's IP feature. You can create a network alias at the AIX level (essentially a persistent label).
Orphy

Originally posted by: SystemAdmin

hi friend,

to provieding high aviolability is greate achivement of IBM which is given us .so inorder to achive this task every node is need to have serviceip ,persistent and standby ip

service ip:it is a comunication interface among all clients with in the network in case of one node get failed entire resources are move to next availability node through this service ip only

persistant ip:it is an ip alising of communication interface ,which is having in a single node and it wont be move from that node in any case.

this is my best of knowledge and dont stike over here only ok