HMC

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

Aggregations are seen as network interfaces/devices and usually inherit layer 2 address from one of the aggregation memebers. Generally there should be no problem, all mentioned commands should return the actual addresses.

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

How about this situation then?

I have two multiport ethernet cards.  Card one is supported by VIOSLPAR1.  Card two is supported by VIOSLPAR2.  Port 1 of card 1 goes to switch1.  Port 2 of card 1 goes to switch2.  Port 1 of card 2 goes to switch1.  Port 2 of card 2 goes to switch2.  All of this appears as one line to 5 lpars of IBM i hosted by those VIOS lpars.  This gives each lpar redundancy in case of a switch failure, card failure or maintenance on a lpar of vios.

What mac address(es) does the network guy see?

Oh, and one of those lpars is in the DMZ and supports our external facing websites.  The other lpars are for internal use only.

Actual situation.

------------------------------
Robert Berendt IBMChampion

Original Message:
Sent: Fri February 23, 2024 08:02 AM
From: Lech Szychowski
Subject: How do I display the MAC address of the Adapters in a 7063-CR2

Aggregations are seen as network interfaces/devices and usually inherit layer 2 address from one of the aggregation memebers. Generally there should be no problem, all mentioned commands should return the actual addresses.

------------------------------
Lech Szychowski

Original Message:
Sent: Fri February 23, 2024 07:48 AM
From: Robert Berendt
Subject: How do I display the MAC address of the Adapters in a 7063-CR2

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

------------------------------
Robert Berendt IBMChampion

Original Message:
Sent: Fri February 23, 2024 07:43 AM
From: Robert Berendt
Subject: How do I display the MAC address of the Adapters in a 7063-CR2

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

------------------------------
Robert Berendt IBMChampion

Original Message:
Sent: Thu February 22, 2024 02:47 AM
From: Kishore Rampersad
Subject: How do I display the MAC address of the Adapters in a 7063-CR2

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

------------------------------
Kishore Rampersad
IBM South Africa
Sandton
------------------------------

How about this situation then?

I have two multiport ethernet cards.  Card one is supported by VIOSLPAR1.  Card two is supported by VIOSLPAR2.  Port 1 of card 1 goes to switch1.  Port 2 of card 1 goes to switch2.  Port 1 of card 2 goes to switch1.  Port 2 of card 2 goes to switch2.  All of this appears as one line to 5 lpars of IBM i hosted by those VIOS lpars.  This gives each lpar redundancy in case of a switch failure, card failure or maintenance on a lpar of vios.

What mac address(es) does the network guy see?

Oh, and one of those lpars is in the DMZ and supports our external facing websites.  The other lpars are for internal use only.

Actual situation.

Aggregations are seen as network interfaces/devices and usually inherit layer 2 address from one of the aggregation memebers. Generally there should be no problem, all mentioned commands should return the actual addresses.

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

The SEA uses the MAC of the aggregate which is the MAC of the first card of the aggregate (Unless you specify an LAA for the aggregate).
From the switch side, they'll see this MAC on all the ports of the aggregate, with the exception of backup adapters.

The LPARs show up with their own MACs, on the aggregate ports selected by the VIOS.

How about this situation then?

I have two multiport ethernet cards.  Card one is supported by VIOSLPAR1.  Card two is supported by VIOSLPAR2.  Port 1 of card 1 goes to switch1.  Port 2 of card 1 goes to switch2.  Port 1 of card 2 goes to switch1.  Port 2 of card 2 goes to switch2.  All of this appears as one line to 5 lpars of IBM i hosted by those VIOS lpars.  This gives each lpar redundancy in case of a switch failure, card failure or maintenance on a lpar of vios.

What mac address(es) does the network guy see?

Oh, and one of those lpars is in the DMZ and supports our external facing websites.  The other lpars are for internal use only.

Actual situation.

Aggregations are seen as network interfaces/devices and usually inherit layer 2 address from one of the aggregation memebers. Generally there should be no problem, all mentioned commands should return the actual addresses.

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

My point was not a question as to how to do this for my situation.  It was more of a "I'm not sure the suggestions others have given you as to how to determine the mac address that the network guy is trying to use may work for your situation."  YMMV

From the original post "...display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules"

The SEA uses the MAC of the aggregate which is the MAC of the first card of the aggregate (Unless you specify an LAA for the aggregate).
From the switch side, they'll see this MAC on all the ports of the aggregate, with the exception of backup adapters.

The LPARs show up with their own MACs, on the aggregate ports selected by the VIOS.

How about this situation then?

I have two multiport ethernet cards.  Card one is supported by VIOSLPAR1.  Card two is supported by VIOSLPAR2.  Port 1 of card 1 goes to switch1.  Port 2 of card 1 goes to switch2.  Port 1 of card 2 goes to switch1.  Port 2 of card 2 goes to switch2.  All of this appears as one line to 5 lpars of IBM i hosted by those VIOS lpars.  This gives each lpar redundancy in case of a switch failure, card failure or maintenance on a lpar of vios.

What mac address(es) does the network guy see?

Oh, and one of those lpars is in the DMZ and supports our external facing websites.  The other lpars are for internal use only.

Actual situation.

Aggregations are seen as network interfaces/devices and usually inherit layer 2 address from one of the aggregation memebers. Generally there should be no problem, all mentioned commands should return the actual addresses.

I'm also curious, assuming that the various OS's supported on the platform didn't override the mac address (as shown above) how do the suggested HMC commands handle MAC addresses returned by link aggregation, etc?

And the cool thing is, the individual OS can override the MAC and assign it a new one.  Very useful in those instances where you replace a faulty card and your network consultant moves at a snail's pace.  For example, in IBM i it's quite easy to do 

CHGLINETH LIND(LANLINSYS) ADPTADR(867530900000)

Just ask Jenny.  ;-)

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated 

Please advise which commands do i run to display the Mac address of the adapters in a CR2 HMC-- needed to add to firewall rules

Guidance much appreciated