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SNMP request and HP service guard

 
Atalante
Occasional Contributor

SNMP request and HP service guard

I have 2 systems. One is using an HP server with the HP service guard (I am not really good on that topic by the way). From what I have understood, the service guard has 3 IP addresses: 2 physical and 1 virtual. If you want to access something related to one physical IP you can use the virtual.
My pb is the following: my second system (box B) sends SNMP get command to the first one (box A) using the virtual IP address. This request will be redirected to correct physical IP. But instead of sending the snmp command answer to box B on a fixed port, box A is using a random TCP port. As there is a firewall between A and B, the answer never reached B. My question: is there a way to oblige the service guard to use a fixed port? IF not, is there any other solution?
Thx in advance.
2 REPLIES 2
Steven E. Protter
Exalted Contributor

Re: SNMP request and HP service guard

Shalom Alante,

SNMP is supposed to use the physical IP address, as its purpose is to obtain infromation about the machine.

A Serviceguard cluster is a group of computers (though it can be run on one alone) that works together for one purpose. It can have any number of virtual IP addresses associated with packages.

Lets say you want to run oracle in high availability mode. You assign an IP address to that package that moves with the package from machine to machine, node to node depending on which machine Oracle is running on.

SNMP can be configured to check on oracle(I think). In the above scenario the only way to check oracle is via the virtual ip. But to use SNMP to monitor the machine itself, the physical ip address needs to be used.

What needs to be done is to change the snmp configuration, not Serviceguard, it seems to be running the way it should.

SEP
Steven E Protter
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Atalante
Occasional Contributor

Re: SNMP request and HP service guard

Thx Steven.

If I used the physical IP, I would be able to get the response, right?

What do you mean by changing the SNMP configuration?