Can we configure link based IPMP in private connectivity in Oracle RAC Post: 302770787

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Operating Systems Solaris Can we configure link based IPMP in private connectivity in Oracle RAC Post 302770787 by DGPickett on Monday 18th of February 2013 11:02:05 AM

02-18-2013

Registered User

OK, if you have two nics on server A with crossover cables to two nics on server b, it will be no different than if they were connected with a hub, bridge or switch. They each need their own small IP address nets. Then, why should IPMP care what the network fabric is?

I am not personally experienced with crossover cables. I heard that it can be hard to get them to behave if one server is powered off, but perhaps some nic firmware has stepped up to this. It seems like a frequently overlooked inexpensive and fast network fabric, with no collisions and in full duplex with not much length limitation. NICs are cheap, and wire is far cheaper than gigabit switches! You might run out of slots after a while. There is much need for this sort of bandwidth with high performance SAN and RDBMS client-server configurations.

DGPickett

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cm

cm(5)								File Formats Manual							     cm(5)

NAME

       cm - cluster monitor for high availability clusters

   Remarks
       Cluster	operations require the installation of the optional Serviceguard or Serviceguard Extension for RAC software, which is not included
       in the standard HP-UX operating system.

DESCRIPTION

       Serviceguard and Serviceguard Extension for RAC are high availability products which provide an environment such that after a failure of  a
       node,  services	(applications)	can be up and running again on another node within a very short amount of time.  In addition, Serviceguard
       Extension for RAC is the enabling software for the Real Application Clusters (RAC).  Working with the basic Serviceguard product,  Service-
       guard Extension for Faster Failover allows configuration of clusters for optimized failover.

   Commands
       The following set of commands is used to configure a high availability cluster:

		     cmquerycl(1M)
		     cmmakepkg(1M)
		     cmcheckconf(1M)
		     cmapplyconf(1M)

       The following commands are used to run or halt a cluster:

		     cmruncl(1M)
		     cmhaltcl(1M)
		     cmrunnode(1M)
		     cmhaltnode(1M)
		     cmviewcl(1M)

       Once a cluster is formed, the following commands are provided for manual operation on high availability packages:

		     cmrunpkg(1M)
		     cmhaltpkg(1M)
		     cmmodpkg(1M)

       The following commands are used within a package control script to control the services and networks configured for a package:

		     cmrunserv(1M)
		     cmhaltserv(1M)
		     cmmodnet(1M)

       A command is provided to aid in migrating from a SwitchOver/UX configuration to a Serviceguard cluster:

		     cmmigrate(1M)

       This command is not applicable with Serviceguard Extension for RAC.

SEE ALSO

       Managing Serviceguard.
       Configuring RAC Clusters with Serviceguard Extension for RAC.

						      Requires Optional Serviceguard Software						     cm(5)