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Displaying EWx0: to WEn: connection.

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Jan-Erik Soderholm

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May 14, 2013, 2:07:13 PM5/14/13
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Hi.

I have two Ether cards EWA0: and EWB0: (as seen
from the console or from MC LANCP).

TCPIP SHO INTER shows two devices WE0: and WE1:.

Is there a single command that clearly shows which
EWx0: device is which WEn:, so to speek ?

Preferable without shutting down VMS...

Regards,
Jan-Erik.

Stephen Hoffman

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May 14, 2013, 2:46:24 PM5/14/13
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On 2013-05-14 18:07:13 +0000, Jan-Erik Soderholm said:

> Is there a single command that clearly shows which EWx0: device is
> which WEn:, so to speek ?

A simple way view the interface to device name mapping:
@SYS$STARTUP:TCPIP$CONFIG core environments interfaces


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Pure Personal Opinion | HoffmanLabs LLC

Steven Schweda

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May 14, 2013, 2:48:29 PM5/14/13
to Steven M. Schweda
> Is there a single command that clearly shows [...]

So far as I know, the mapping, A -> 0, B -> 1, and so on,
is fixed, not variable, so EWA0 = WE0, EWB0 = WE1, and so on.
There may be a (TCPIP) manual which says this, but I know of
no such command.

> Preferable without shutting down VMS...

Disconnect one cable, and see what fails?

Jan-Erik Soderholm

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May 14, 2013, 5:22:24 PM5/14/13
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Stephen Hoffman wrote 2013-05-14 20:46:
> On 2013-05-14 18:07:13 +0000, Jan-Erik Soderholm said:
>
>> Is there a single command that clearly shows which EWx0: device is which
>> WEn:, so to speek ?
>
> A simple way view the interface to device name mapping:
> @SYS$STARTUP:TCPIP$CONFIG core environments interfaces
>
>

Yes, that screen was quite clear :

INTERFACE Configuration

The Ethernet device(s) on your system are: EWA0:
EWB0:

WE0 is the Ethernet device EWA0:
WE1 is the Ethernet device EWB0:


I think that's it. :-)

> Disconnect one cable, and see what fails?

Yes, and have 20 incident cases in my inbox in 5 minutes... :-)


Next question is how to identify EWA0/EWB0 from the back
panel of the server. Hopefully the cards have MAC
addresses on the outside...

Thanks,
Jan-Erik.

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