Is there any Limit for adding IPs in HP-UX 11i

[wish_1]

Dear All

We are having HPrp7400 (HP-UX 11i)server with two node cluster with 4 live oracle 9i application running and also 9iAS in one node.

The issue is - in one node there 5 IPs assiged now i want to know can i add 5 more IPs in host file for the communication purpose. And also want to know what is the limit.

thanx & Regds
wish

[wish_1]

dear all

I want to add 5 more logical IPs. Any is limit there for addind logical IPs any white paper or documentation please give me the URLs

thanx & Regds
wish

[Duncan Edmonstone]

wish,

You can have up to 200, if your IP subnetting will allow that. See page 96 of the Serviceguard manual:

http://docs.hp.com/en/B3936-90079/B3936-90079.pdf

HTH

Duncan

[rick jones]

I believe as far as the _transport_ (TCP/IP) code goes, there is no limit to the number of IPs one can assign. From other posts, it sounds like there may be a limit in ServiceGuard.

[D Block 2]

run for yourself:
netstat -i
netstat -rn
and
lanscan

notice:

with the Oracle RAC, make certain that any Floating Virtual-IPs have the exact same "Logical" lan instance number.

example:

node 1 - VIP 172.16.60.100 is on [ lan1:1 ]
node 2 - VIP 172.16.60.200 is on [ lan1:1 ]

I know for a fact, that Oracle 10g RAC has an issue with the FailOver of the service to the 2nd node. It assumes, that lan1:1 should be the same for the Oracle VIPs.

If both Servers have a different lan, then change this to the same by using "ioinit -f ".

[Mel Burslan]

There is no limit logically to the number of virtual IP addresses that you can add to any interface but to be realistic, I would not go wild and add anything more than 10-12 addresses to any interface unless your interface is a Gbit one and all other connections that you are going to field are going to come from 10/100 interfaces. Throughput otherwise will be subpar.

Of course, subnetting is your other limiting factor as far as how many addresses you can have.

[D Block 2]

wish,

wanted to clarify my side comments about Oracle VIPS.

The IP's can be on different lan interface number other than lan1. They could be on lan3, but the lan# and interface :6, should all be the same for that subnet of floating VIPs, e.g., lan3:6.

best rgds,
Tom

[wish_1]

Dear All

Thanks a lot for giving useful information. I will be disturbing you all time and again.

Once again a BIG THANKS

Regards
Wish

[wish_1]

t