Re: IPoIB TC MIB
"Hal Rosenstock" <[email protected]> Tue, 20 Dec 2005 11:26:23 -0500
| Newsgroups | gmane.ietf.ipoib |
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Hi David,
See <hnr>...</hnr> comments embedded below.
-- Hal
----- Original Message -----=20
From: David M. Brean=20
To: Hal Rosenstock=20
Cc: IPoverIB=20
Sent: Tuesday, December 20, 2005 11:08 AM
Subject: Re: [Ipoverib] IPoIB TC MIB
Hal Rosenstock wrote:
Hi David,
Are you referring to the IBA definition of partition ?
Yes.
Then my quibble is with this. If full and limited members are in the =
same partition, it seems there are 2 PKeys for the partition (and look =
at the valuie range for ibPartitionKey) so my comment is then as =
follows:
Yes, there are two different 16-bit P_Keys that can be used by ports =
communicating in the same partition.
<hnr> Understood. </hnr>
While ibPartition is a 16 bit value, it is filled with the low 15 =
bits of the PKey with the high bit being zero. That is not clear (and =
that is how I think it needs to be used).
I want a partition based table (with full and limited members) not =
separate ones (for full and limited members).
In general, I'd prefer to have the membership bit exposed since it =
impacts the communication capabilities of a port in a partition. Also, =
I'm not sure what you mean by "not separate ones" because a P_Key table =
can store P_Keys with both full and limited membership.
<hnr> Yes, the membership is exposed but in a different way. As to =
separate, I'm referring to the use of ibPartitionKey in the SM MIB in =
the partition table. Maybe I'm wrong but partition key is different from =
partition. It seems that there is some redundancy in that table if =
indeed the ibPartitionKey is the full 16 bits. </hnr>
-David
-- Hal
----- Original Message -----=20
From: David M. Brean=20
To: Hal Rosenstock=20
Cc: IPoverIB=20
Sent: Tuesday, December 20, 2005 4:09 AM
Subject: Re: [Ipoverib] IPoIB TC MIB
Hello,
Hal Rosenstock wrote:
Hi,
In draft-ietf-ipoib-ibmib-tc-mib-07.txt, there is ibPartitionKey =
as follows:
IbPartitionKey ::=3D TEXTUAL-CONVENTION
DISPLAY-HINT "x"
STATUS current
DESCRIPTION
"The 16-bit Partition Key."
SYNTAX Unsigned32 (0..65535)How about an ibPartition with a =
definition something like the following:IbPartition ::=3D =
TEXTUAL-CONVENTION
DISPLAY-HINT "x"
STATUS current
DESCRIPTION
"The 15-bit Partition Key Base without the membership bit."
SYNTAX Unsigned32 (0..32767)
A partition has full and limited members where all 16-bits define =
the partition. In fact, text says "A collection of endnodes with the =
same P_Key in their P_Key Tables are referred to as being members of a =
partition, or in a partition. A P_Key Table can specify one of two types =
of partition membership: Limited or Full." So, I think that you should =
choose a different name, if this is needed. Also, how do you propose to =
use this new definition?
By the way, a nit: the MIB also defines the "IbSmPortList". Can =
it be called "IbSmaPortList" or "IbPortList"? It's used in the SMA MIB.
-David
-- =
Hal----------------------------------------------------------------------=
--
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<DIV><FONT face=3DArial size=3D2>Hi David,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>See <hnr>...</hnr> comments =
embedded=20
below.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>-- Hal</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A [email protected] =
href=3D"mailto:[email protected]">David M.=20
Brean</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
[email protected]=20
href=3D"mailto:[email protected]">Hal Rosenstock</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Cc:</B> <A =
[email protected]=20
href=3D"mailto:[email protected]">IPoverIB</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, December 20, =
2005 11:08=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Ipoverib] IPoIB =
TC=20
MIB</DIV>
<DIV><FONT face=3DArial size=3D2></FONT><BR></DIV>Hal Rosenstock =
wrote:<BR>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR>
<DIV><FONT face=3DArial size=3D2>Hi David,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Are you referring to the IBA =
definition of=20
partition ?</FONT></DIV></BLOCKQUOTE><BR>Yes.<BR><BR>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<DIV><FONT face=3DArial size=3D2>Then my quibble is with this. If =
full and=20
limited members are in the same partition, it seems there are 2 =
PKeys for=20
the partition (and look at the valuie range for ibPartitionKey) so=20
m</FONT><FONT face=3DArial size=3D2>y comment is then as =
follows:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></BLOCKQUOTE>
<DIV><FONT face=3DArial size=3D2></FONT><BR>Yes, there are two =
different 16-bit=20
P_Keys that can be used by ports communicating in the same =
partition.</DIV>
<DIV><FONT face=3DArial size=3D2></FONT><BR><FONT face=3DArial =
size=3D2><hnr>=20
Understood. </hnr></FONT><BR></DIV>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<DIV><FONT face=3DArial size=3D2>While ibPartition is a 16 bit =
value, it is=20
filled with the low 15 bits of the PKey with the high bit being =
zero. That=20
is not clear (and that is how I think it needs to be =
used).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></BLOCKQUOTE>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<DIV><FONT face=3DArial size=3D2>I want a partition based table =
(with full and=20
limited members) not separate ones (for full and limited=20
members).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></BLOCKQUOTE>
<DIV><FONT face=3DArial size=3D2></FONT><BR>In general, I'd prefer to =
have the=20
membership bit exposed since it impacts the communication capabilities =
of a=20
port in a partition. Also, I'm not sure what you mean by "not =
separate=20
ones" because a P_Key table can store P_Keys with both full and =
limited=20
membership.</DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><hnr> Yes, the membership is =
exposed but in=20
a different way. As to separate, I'm referring to the use of =
ibPartitionKey in=20
the SM MIB in the partition table. Maybe I'm wrong but partition key =
is=20
different from partition. It seems that there is some redundancy in =
that table=20
if indeed the ibPartitionKey is the full 16 bits. =
</hnr></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial =
size=3D2></FONT><FONT=20
face=3DArial size=3D2></FONT><FONT face=3DArial size=3D2></FONT><FONT =
face=3DArial=20
size=3D2></FONT><BR>-David<BR><BR></DIV>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<DIV><FONT face=3DArial size=3D2>-- Hal</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: rgb(0,0,0) 2px solid; MARGIN-RIGHT: 0px">
<DIV=20
style=3D"FONT: 10pt arial; font-size-adjust: none; font-stretch: =
">-----=20
Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: rgb(228,228,228) 0% 50%; FONT: 10pt arial; =
font-size-adjust: none; font-stretch: ; moz-background-clip: initial; =
moz-background-origin: initial; moz-background-inline-policy: =
initial"><B>From:</B>=20
<A [email protected] =
href=3D"mailto:[email protected]">David M.=20
Brean</A> </DIV>
<DIV=20
style=3D"FONT: 10pt arial; font-size-adjust: none; font-stretch: =
"><B>To:</B>=20
<A [email protected] =
href=3D"mailto:[email protected]">Hal=20
Rosenstock</A> </DIV>
<DIV=20
style=3D"FONT: 10pt arial; font-size-adjust: none; font-stretch: =
"><B>Cc:</B>=20
<A [email protected] =
href=3D"mailto:[email protected]">IPoverIB</A>=20
</DIV>
<DIV=20
style=3D"FONT: 10pt arial; font-size-adjust: none; font-stretch: =
"><B>Sent:</B>=20
Tuesday, December 20, 2005 4:09 AM</DIV>
<DIV=20
style=3D"FONT: 10pt arial; font-size-adjust: none; font-stretch: =
"><B>Subject:</B>=20
Re: [Ipoverib] IPoIB TC MIB</DIV>
<DIV><BR></DIV><TT>Hello,</TT><BR><BR>Hal Rosenstock wrote:<BR>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR>
<STYLE></STYLE>
<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>In =
draft-ietf-ipoib-ibmib-tc-mib-07.txt,=20
there is ibPartitionKey as follows:</FONT></DIV>
<DIV> </DIV>
<DIV><!--StartFragment --><PRE>IbPartitionKey ::=3D =
TEXTUAL-CONVENTION
DISPLAY-HINT "x"
STATUS current
DESCRIPTION
"The 16-bit Partition Key."
SYNTAX Unsigned32 (0..65535)</PRE><PRE><FONT face=3DArial =
size=3D2>How about an ibPartition with a definition something like the =
following:</FONT></PRE><PRE><!--StartFragment --><PRE>IbPartition ::=3D =
TEXTUAL-CONVENTION
DISPLAY-HINT "x"
STATUS current
DESCRIPTION
"The 15-bit Partition Key Base without the membership bit."
SYNTAX Unsigned32 (0..32767)</PRE></PRE></DIV></BLOCKQUOTE><BR>A=20
partition has full and limited members where all 16-bits define =
the=20
partition. In fact, text says "A collection of endnodes with =
the=20
same P_Key in their P_Key Tables are referred to as being members =
of a=20
partition, or in a partition. A P_Key Table can specify one of two =
types=20
of partition membership: Limited or Full." So, I think that =
you=20
should choose a different name, if this is needed. Also, how =
do you=20
propose to use this new definition?<BR><BR>By the way, a nit: the =
MIB also=20
defines the "IbSmPortList". Can it be called "IbSmaPortList" =
or=20
"IbPortList"? It's used in the SMA =
MIB.<BR><BR>-David<BR><BR>
<BLOCKQUOTE =
[email protected]=20
type=3D"cite">
<DIV><PRE><PRE> </PRE><PRE><FONT face=3DArial size=3D2>-- =
Hal</FONT></PRE></PRE></DIV><PRE wrap=3D""><HR width=3D"90%" SIZE=3D4>
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href=3D"https://www1.ietf.org/mailman/listinfo/ipoverib">https://www1.iet=
f.org/mailman/listinfo/ipoverib</A>
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