Wed, 15 Jun 2016 20:06:53 -0400

 


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Hi In a sysplex can we maintain the same OSA Portname across the sysplex even if the CHPID for each LPAR differs ? In our case UCB for all the four LPAR are different. 2 LPARs have the same CHPID and 2 other LPARs have same CHPID. What are conditions to maintain the same PORTNAME as same across the Sysplex with that nice scenario ? Jake ---------------



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Hi In a sysplex can we maintain the same OSA Portname across the sysplex even if the CHPID for each LPAR differs ? In our case UCB for all the four LPAR are different. 2 LPARs have the same CHPID and 2 other LPARs have same CHPID. What are conditions to maintain the same PORTNAME as same across the Sysplex with that nice scenario ? Jake ---------------



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On Tuesday, 06/14/2016 at 03:20 GMT, Jake Anderson=20 <justmainframes@gmail.com> wrote: > In a sysplex can we maintain the same OSA Portname across the sysplex=20 even > if the CHPID for each LPAR differs ? > > In our case UCB for all the four LPAR are different. 2 LPARs have the=20 same > CHPID and 2 other LPARs have same CHPID. > > What are conditions to maintain the same PORTNAME as same across the > Sysplex with that nice scenario ? According to my spies, the sysplex manager doesn't care about PORTNAME=20 values. However, I think TCP/IP does, without regard to your plex-ness.=20 According to the IP Config Reference (2.1): The [port] name must be unique in one logical partition and it must be=20 unique for an OSA port shared by multiple logical partitions. Some=20 [OSA-Express] features provide support for multiple ports per network=20 interface card (NIC). The port name assigned to each port on a specific=20 NIC must also be unique. In general, each defined port name should be=20 unique within your network. So, no, you can't use the same port name for different ports. (I'm glad=20 that z/VM and Linux removed the requirement to use port names long ago.) Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 Alan=5FAltmark@us.ibm.com IBM Endicott ---------------







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On Tuesday, 06/14/2016 at 03:20 GMT, Jake Anderson=20 <justmainframes@gmail.com> wrote: > In a sysplex can we maintain the same OSA Portname across the sysplex=20 even > if the CHPID for each LPAR differs ? > > In our case UCB for all the four LPAR are different. 2 LPARs have the=20 same > CHPID and 2 other LPARs have same CHPID. > > What are conditions to maintain the same PORTNAME as same across the > Sysplex with that nice scenario ? According to my spies, the sysplex manager doesn't care about PORTNAME=20 values. However, I think TCP/IP does, without regard to your plex-ness.=20 According to the IP Config Reference (2.1): The [port] name must be unique in one logical partition and it must be=20 unique for an OSA port shared by multiple logical partitions. Some=20 [OSA-Express] features provide support for multiple ports per network=20 interface card (NIC). The port name assigned to each port on a specific=20 NIC must also be unique. In general, each defined port name should be=20 unique within your network. So, no, you can't use the same port name for different ports. (I'm glad=20 that z/VM and Linux removed the requirement to use port names long ago.) Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 Alan=5FAltmark@us.ibm.com IBM Endicott ---------------



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Hi Alan Sorry to be asking dummy questions. So in a sysplex we can share the same Portnum across all the LPARS if they are using the same UCB ranges ? On Jun 15, 2016 1:11 AM, "Alan Altmark" <Alan_Altmark@us.ibm.com> wrote: > On Tuesday, 06/14/2016 at 03:20 GMT, Jake Anderson > <justmainframes@gmail.com> wrote: > > In a sysplex can we maintain the same OSA Portname across the sysplex > even > > if the CHPID for each LPAR differs ? > > > > In our case UCB for all the four LPAR are different. 2 LPARs have the > same > > CHPID and 2 other LPARs have same CHPID. > > > > What are conditions to maintain the same PORTNAME as same across the > > Sysplex with that nice scenario ? > > According to my spies, the sysplex manager doesn't care about PORTNAME > values. However, I think TCP/IP does, without regard to your plex-ness. > According to the IP Config Reference (2.1): > > The [port] name must be unique in one logical partition and it must be > unique for an OSA port shared by multiple logical partitions. Some > [OSA-Express] features provide support for multiple ports per network > interface card (NIC). The port name assigned to each port on a specific > NIC must also be unique. In general, each defined port name should be > unique within your network. > > So, no, you can't use the same port name for different ports. (I'm glad > that z/VM and Linux removed the requirement to use port names long ago.) > > Alan Altmark > > Senior Managing z/VM and Linux Consultant > Lab Services System z Delivery Practice > IBM Systems & Technology Group > ibm.com/systems/services/labservices > office: 607.429.3323 > mobile; 607.321.7556 > Alan_Altmark@us.ibm.com > IBM Endicott > ---------------







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Hi Alan Sorry to be asking dummy questions. So in a sysplex we can share the same Portnum across all the LPARS if they are using the same UCB ranges ? On Jun 15, 2016 1:11 AM, "Alan Altmark" <Alan_Altmark@us.ibm.com> wrote: > On Tuesday, 06/14/2016 at 03:20 GMT, Jake Anderson > <justmainframes@gmail.com> wrote: > > In a sysplex can we maintain the same OSA Portname across the sysplex > even > > if the CHPID for each LPAR differs ? > > > > In our case UCB for all the four LPAR are different. 2 LPARs have the > same > > CHPID and 2 other LPARs have same CHPID. > > > > What are conditions to maintain the same PORTNAME as same across the > > Sysplex with that nice scenario ? > > According to my spies, the sysplex manager doesn't care about PORTNAME > values. However, I think TCP/IP does, without regard to your plex-ness. > According to the IP Config Reference (2.1): > > The [port] name must be unique in one logical partition and it must be > unique for an OSA port shared by multiple logical partitions. Some > [OSA-Express] features provide support for multiple ports per network > interface card (NIC). The port name assigned to each port on a specific > NIC must also be unique. In general, each defined port name should be > unique within your network. > > So, no, you can't use the same port name for different ports. (I'm glad > that z/VM and Linux removed the requirement to use port names long ago.) > > Alan Altmark > > Senior Managing z/VM and Linux Consultant > Lab Services System z Delivery Practice > IBM Systems & Technology Group > ibm.com/systems/services/labservices > office: 607.429.3323 > mobile; 607.321.7556 > Alan_Altmark@us.ibm.com > IBM Endicott > ---------------



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On Wednesday, 06/15/2016 at 11:05 GMT, Jake Anderson=20 <justmainframes@gmail.com> wrote: > So in a sysplex we can share the same Portnum across all the LPARS if=20 they > are using the same UCB ranges? You can share the same physical port on an OSA as long as all sharing z/OS = LPARs specify the same PORTNAME for that port. It doesn't matter what UCB = you use. It is convenient to use the same UCB, and that is what I would=20 do. Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 Alan=5FAltmark@us.ibm.com IBM Endicott ---------------







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On Wednesday, 06/15/2016 at 11:05 GMT, Jake Anderson=20 <justmainframes@gmail.com> wrote: > So in a sysplex we can share the same Portnum across all the LPARS if=20 they > are using the same UCB ranges? You can share the same physical port on an OSA as long as all sharing z/OS = LPARs specify the same PORTNAME for that port. It doesn't matter what UCB = you use. It is convenient to use the same UCB, and that is what I would=20 do. Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 Alan=5FAltmark@us.ibm.com IBM Endicott ---------------


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