Can any one explain me Shared-IP and Exclusive IP ?? Post: 302373941

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Operating Systems Solaris Can any one explain me Shared-IP and Exclusive IP ?? Post 302373941 by sbk1972 on Monday 23rd of November 2009 02:14:49 AM

11-23-2009

Registered User

Lets relate it to hose pipes. Shared IP is like you are using one hose that is shared to a number of flats. Exclusive IP is like your flat having its own hose pipe.

I use shared and exclusive. In the global zone Ive created an aggregated link ( joined a number of nics together to make a really fast NIC, or `pipe`) On a number of training zones, Ive then used this NIC as a SHARED IP, i.e. that the 5 training zones using that pipe, each having a virtual ip configured using the underlying pipe.

On a production zone, where I want more control of the NIC, Ive created the production zone using exclusive NIC. Within the zone configuration file ( zonecfg ) I just tell it that Im using the exxclusive-ip and tell it what nic the zone will have.

Exclusive-IP allows for greater control over the NIC, SHared-IP doesnt, as the Global zone controls the underlying hardware. When it comes to zones and hardware, zones dont have truely 100% control over it. ITs like a client PC using a proxy server to surf the web. On the surface it looks like your internet request surfs the net, but infact its your proxy server that is doing it. So, sometimes the application, zone, needs more control over its NIC, if you are using clustering software, IPMP etc etc, so you use the EXclusive-IP in this situation.

Sorry if my explanation is a bit over the place :-)

SBK

sbk1972

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LEARN ABOUT OPENSOLARIS

zcons

zcons(7D)							      Devices								 zcons(7D)

NAME

       zcons - Zone console device driver

DESCRIPTION

       The  zcons character driver exports the console for system zones. The driver is comprised of two "sides:" a master side with which applica-
       tions in the global zone communicate, and a slave side, which receives I/O from the master side. The slave side is available in the  global
       zones.

       Applications must not depend on the location of /dev or /devices entries exported by zcons. Inside a zone, the zcons slave  side is fronted
       by /dev/console and other console-related  symbolic links, which are used by applications that expect to write to the system console.

       The zcons driver is Sun Private, and may change in future releases.

FILES

       /dev/zcons/<zonename>/masterconsole

	   Global zone master side console for zone <zonename>.

       /dev/zcons/<zonename>/slaveconsole

	   Global zone slave side console for zone <zonename>.

       /dev/zconsole

	   Non-global zone console (slave side).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       | Interface Stability	     |Sun Private		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       zoneadm(1M), zonecfg(1M), attributes(5), zones(5)

SunOS 5.11							    24 Aug 2003 							 zcons(7D)