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How to find the completion of OID registrations by subagent with

This is a discussion on How to find the completion of OID registrations by subagent with within the SNMP Users forums, part of the Networking and Network Related category; This is a multi-part message in MIME format. --===============1872936820== Content-class: urn:content-classes:message Content-Type: multipart/alternative; ...


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Old 04-11-2008
Pamidipati Suresh-G20238
 
Posts: n/a
Default How to find the completion of OID registrations by subagent with
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Hi=20All,
=20
We=20are=20using=20Net-snmp-5.2.2=20as=20Agentx=20Master=20agent=20and=20s=
ubagent.
=20
Our=20subagent=20registers=20OIDs=20with=20SNMPD=2 0using=20helper=20functi=
ons=20in=20table.c
and=20scalar.c.
After=20subagent=20has=20established=20Agentx=20se ssion=20with=20SNMPD=20a=
nd=20registered
OIDs,=20when=20SNMPD=20goes=20down,=20subagent=20d etects=20this=20as=20the=
re=20will=20be=20no
response=20from=20SNMPD=20for=20Agentx=20ping=20re quest.=20Later=20when=20=
SNMPD=20comes=20up,
subagent=20detects=20this=20and=20registers=20the= 20OIDs=20present=20in=20=
it's=20data
structures=20with=20SNMPD.=20We=20can=20know=20tha t=20that=20registration=20=
of=20a=20certain
OID=20is=20completed=20by=20doing=20snmpwalk=20on= 20nsModuleTable.=20If=20=
the=20OID=20is
present=20in=20snmpwalk=20output,=20then=20the=20O ID=20is=20known=20to=20b=
e=20registered.
=20
In=20this=20kind=20of=20situation=20where=20Net-snmp=20code/function=20sen=
ds=20register
messages=20to=20SNMPD=20after=20SNMPD=20goes=20dow n=20and=20comes=20up,=20=
is=20there=20any=20other
mechanism=20to=20find=20out=20the=20completion=20o f=20all=20registrations=20=
with=20SNMPD.?
Because=20application=20code=20does=20not=20come=2 0to=20know=20that=20Net-=
snmp=20code=20in
subagent=20has=20sent=20out=20all=20the=20registra tion=20messages=20to=20S=
NMPD.=20For
example,=20does=20the=20net-snmp=20code=20of=20subagent=20send=20a=20trap=20=
to=20indicate=20that
it=20has=20sent=20out=20all=20the=20registrations= 20that=20were=20present=20=
in=20it's=20data
structures=20after=20SNMPD=20has=20come=20up.=20If =20this=20trap=20is=20no=
t=20existing
currently=20in=20Net-snmp,=20If=20I=20add=20it=20in=20Net-snmp=20code=20an=
d=20submit=20it=20as=20a
patch,=20will=20it=20be=20accepted=20by=20the=20gr oup.?=20
=20
We=20had=20this=20requirement=20to=20know=20the=20 completion=20of=20OID=20=
registrations=20by
subagent=20after=20SNMPD=20has=20come=20up.=20Our= 20test=20application=20w=
ill=20start=20doing
snmp=20operations=20after=20the=20registrations=20 are=20completed.=20As=20=
I=20mentioned
above,=20it=20is=20known=20by=20doing=20snmpwalk=2 0on=20nsModuleTable,=20b=
ut=20an
asynchronous=20event/trap=20from=20subagent=20would=20be=20more=20usefu l..=

=20
So=20please=20let=20us=20know=20your=20thoughts/comments=20on=20this.
=20
Thanks=20&=20Regards,
Suresh.
=20
=20
=20
=20
=20

__________________________________________________ ____________________
This=20email=20has=20been=20scanned=20by=20the=20M essageLabs=20Email=20Sec=
urity=20System.
For=20more=20information=20please=20visit=20http://www.messagelabs.com/ema=
il=20
__________________________________________________ ____________________
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<!DOCTYPE=20HTML=20PUBLIC=20"-//W3C//DTD=20HTML=204.0=20Transitional//EN">=

<HTML><HEAD>
<META=20HTTP-EQUIV=3D"Content-Type"=20CONTENT=3D"text/html;=20charset=3Dus=
-ascii">
<TITLE>Message</TITLE>

<META=20content=3D"MSHTML=206.00.2900.3268"=20name =3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>Hi=
=20
All,</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>We=
=20are=20using=20
Net-snmp-5.2.2=20as=20Agentx=20Master=20agent=20and=20subag ent.</FONT></SP=
AN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>Ou=
r=20subagent=20
registers=20OIDs=20with=20SNMPD=20using=20helper=2 0functions=20in=20table.=
c=20and=20
scalar.c.</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>Af=
ter=20subagent=20has=20
established=20Agentx=20session=20with=20SNMPD=20an d=20registered=20OIDs,=20=
w</FONT></SPAN><SPAN=20
class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>hen=20SNM PD=20g=
oes=20down,=20subagent=20
detects=20this=20as=20there=20will=20be=20no=20res ponse=20from=20SNMPD=20f=
or=20Agentx=20ping=20request.=20
Later=20when=20SNMPD=20comes=20up,=20subagent=20de tects=20this=20and=20reg=
isters=20the=20OIDs=20present=20
in=20it's=20data=20structures=20with=20SNMPD.=20We =20can=20know=20that=20t=
hat=20registration=20of=20a=20
certain=20OID=20is=20completed=20by=20doing=20snmp walk=20on=20nsModuleTabl=
e.=20If=20the=20OID=20is=20
present=20in=20snmpwalk=20output,=20then=20the=20O ID=20is=20known=20to=20b=
e=20
registered.</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>In=
=20this=20kind=20of=20
situation=20where=20Net-snmp=20code/function=20sends=20register=20messages=
=20to=20SNMPD=20after=20
SNMPD=20goes=20down=20and=20comes=20up,=20is=20the re=20any=20other&nbsp;me=
chanism&nbsp;to=20find=20out=20
the=20completion=20of=20all=20registrations=20with =20SNMPD.?=20Because=20a=
pplication=20code=20does=20
not=20come=20to=20know=20that=20Net-snmp=20code=20in=20subagent=20has=20se=
nt=20out=20all=20the=20
registration=20messages=20to=20SNMPD.=20For=20exam ple,=20does=20the=20net-=
snmp=20code&nbsp;of=20
subagent=20send=20a=20trap=20to=20indicate=20that= 20it=20has=20sent=20out=20=
all=20the=20registrations=20that=20
were=20present=20in=20it's=20data=20structures=20a fter=20SNMPD=20has=20com=
e=20up.=20If=20this=20trap=20is=20
not=20existing=20currently=20in=20Net-snmp,=20If=20I=20add=20it=20in=20Net=
-snmp=20code=20and=20
submit&nbsp;it=20as=20a=20patch,=20will=20it=20be= 20accepted=20by=20the=20=
group.?=20
</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>We=
=20had=20this=20
requirement=20to=20know=20the=20completion=20of=20 OID=20registrations=20by=
=20subagent=20after=20SNMPD=20
has=20come=20up.=20Our=20test=20application=20will =20start=20doing=20snmp=20=
operations=20after=20the=20
registrations=20are=20completed.=20As=20I=20mentio ned=20above,=20it=20is=20=
known=20by=20doing=20snmpwalk=20
on=20nsModuleTable,=20but=20an=20asynchronous=20ev ent/trap=20from=20subage=
nt=20would=20be=20more=20
useful..</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>So=
=20please=20let=20us=20
know=20your=20thoughts/comments=20on=20this.</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20size=3D2>Th=
anks=20&amp;=20
Regards,</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2>Suresh.</FONT></SPAN></DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN=20class=3D132405913-11042008><FONT=20face=3DArial=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
<BR>
__________________________________________________ ____________________<BR>=

This=20email=20has=20been=20scanned=20by=20the=20M essageLabs=20Email=20Sec=
urity=20System.<BR>
For=20more=20information=20please=20visit=20http://www.messagelabs.com/ema=
il=20<BR>
__________________________________________________ ____________________<BR>=

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