SNMP Agent engineboot
Hi Everyone,
Happy new year 2013!
I am trying to implement an SNMP agent using net-snmp APIs,I use below method
to setup SNMP agent process, called SNMP_agt.
snmp_set_do_debugging(1);
snmp_enable_stderrlog();
init_agent("SNMP_agent");
init_snmp("SNMP_agent");
snmp_dbg_print();
init_master_agent();
This agent works fine for GET and SET operations. But when this process
re-started, and there is another request comes in, SNMP agent will replies
error:usmstatus not in timewindow.
I learnt that SNMP agent should increase the engineboot if agent restarted, how
should I implement this function that SNMP Manager don't need do a handshake
again if SNMP agent restarted?
Thanks,
Barclay
:
-Original Message-
From: dave.shi...@gmail.com [mailto:dave.shi...@gmail.com] On Behalf Of Dave
Shield
Sent: 2013年1月2日 17:11
To: Zheng, Wenjie (Barclay)
Cc: net-snmp-cod...@lists.sourceforge.net; net-snmp-users@lists.sourceforge.net
Subject: Re: SNMP Agent log
On 2 January 2013 08:45, Zheng, Wenjie (Barclay)
wrote:
> I am trying to implement an SNMP agent using net-snmp APIs,
> I used below method to setup a SNMP agent process,called SNMP_agt.
:
> This agent works but I can not find the deamon process using "ps -ef|grep
> snmpd"?
What about "ps -ef | grep SNMP_agt" ?
If the process is called "SNMP_agt", then that's probably what you should
be looking for - not 'snmpd'
> I got another question: where can I set the debug log?
See the routine 'snmp_log_options' in the file 'snmplib/snmp_logging.c'
This is where the standard agent logging configuration is handled.
You can either try calling this directly as part of your command-line
processing or similar, or reproduce the particular aspects of this code
that you want to use.
Dave
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Re: Question regarding Tables in net-snmp
Hi Dave,
I just want to let you know that the method you told me for cache perfectly
worked for me. I adjusted timeout to 1( the smallest possible).Thanks a lot for
your help.
Regards,
Reza
From: Dave Shield
To: Reza Salehi
Cc: SNMP FORUM
Sent: Friday, January 4, 2013 1:41 PM
Subject: Re: Question regarding Tables in net-snmp
On 4 January 2013 18:21, Reza Salehi wrote:
> I put a printf("test"); inside the former one (
> athStatusTable_get_first_data_point() ).It gets called once if I run
> snmpget but still it gets called multiple time ( up to number of column in
> the table) if I run snmpwalk or snmptable.
Yes, that's correct.
This is the way that the iterator helper works.
You haven't shown how 'fill_table' works, but I suspect this
helper is probably not the best choice for your requirements.
> Maybe I need to run mib2c diffrently? or I am missing something here.
>
> The only problem is I need to put my function which fills the
> table somewhere to gets called once in response to snmptable or snmpwalk
What I would suggest is that you run
mib2c -S cache=1 -c mib2c.table_data,conf athStatusTable
This will include code to load the contents of the table into a local
cache, which will then be used to process requests. That 'load_table'
routine is essentially the same as your curent 'fill_table', and will be
called whenever the cache is regarded as "too old" to be used.
If you tweak the cache timeout to a suitable value, this will typically
be re-loaded at the start of a walk, and remain valid for the duration.
You could use the same cache approach with the iterator helper
as well, but the table_data helper is probably more efficient.
Dave--
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MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
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Re: Question regarding Tables in net-snmp
Thanks Dave.
I will try the cache method you mentioned to see how it works for me.
fill_table() function simply reads and parses /proc/net/dev file and fills
table with statistics for the wireless interfaces (wifi0,wifi1..). So one
attempt to this function fills the whole table.
BR,
Reza
From: Dave Shield
To: Reza Salehi
Cc: SNMP FORUM
Sent: Friday, January 4, 2013 1:41 PM
Subject: Re: Question regarding Tables in net-snmp
On 4 January 2013 18:21, Reza Salehi wrote:
> I put a printf("test"); inside the former one (
> athStatusTable_get_first_data_point() ).It gets called once if I run
> snmpget but still it gets called multiple time ( up to number of column in
> the table) if I run snmpwalk or snmptable.
Yes, that's correct.
This is the way that the iterator helper works.
You haven't shown how 'fill_table' works, but I suspect this
helper is probably not the best choice for your requirements.
> Maybe I need to run mib2c diffrently? or I am missing something here.
>
> The only problem is I need to put my function which fills the
> table somewhere to gets called once in response to snmptable or snmpwalk
What I would suggest is that you run
mib2c -S cache=1 -c mib2c.table_data,conf athStatusTable
This will include code to load the contents of the table into a local
cache, which will then be used to process requests. That 'load_table'
routine is essentially the same as your curent 'fill_table', and will be
called whenever the cache is regarded as "too old" to be used.
If you tweak the cache timeout to a suitable value, this will typically
be re-loaded at the start of a walk, and remain valid for the duration.
You could use the same cache approach with the iterator helper
as well, but the table_data helper is probably more efficient.
Dave--
Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
MVPs and experts. SALE $99.99 this month only -- learn more at:
http://p.sf.net/sfu/learnmore_122912___
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RE: getting errorno 99 for snmptrapd
Thank you. It turns out that it was a firewall problem with settings in iptable. (Your answer helped point me in the right direction.) Once we reworked these to be "looser", snmptrapd was able to receive traps from the designated system. Amy Vanzant-Hodge -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: how do I configure net-snmp on AIX
On 3 January 2013 22:18, Wipro-Manish Sharma wrote: > I have AIX server 5300-07-10-0943 and looking for configuration net –snmp > on the same. > > > > We have installed net-snmp-5.5-1.rpm package on the server but we are > getting time response output. and in /var/log/snmpd.log we are getting error > as > > "nlist err: neither proc nor _proc found.Warning: > no access control information configured. > It's unlikely this agent can serve any useful purpose in this state. > Run "snmpconf -g basic_setup" to help you configure the snmpd.conf file for > this agent" I'll leave someone else to comment on the nlist error, but the access control issue can be fixed by creating a text file 'snmpd.conf' containing the following: rocommunity public That should be enough to allow you to query the agent. There's more information to guide you in the FAQ, man pages, etc Dave -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: getting errorno 99 for snmptrapd
On 4 January 2013 19:59, Vanzant-Hodge, Amy wrote: > errno 99 “Can assign requested address” > What does this mean and is there a way to fix this. It's a bit difficult to comment, given the limited information you have provided. Some details as to the environment you are working with, how you are running the command and/or what triggers this error might be useful. But a quick Google search for this error seems to indicate that it's probably related to being unable to open the specified address/port - either because it's being asked to use an address that isn't possible, or because there are too many ports open already. You should be able to check the second by running 'netstat' to look at what connections are open (or waiting to close). As for the first - look at the command that is used to start the trap receiver, and the config files used to configure it - and see if there's anything that specifies an explicit interface and/or port to listen on. Failing that, you're going to have to give us a bit more to work with! Dave -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: mib2c best configuration mode to access global functions
On 4 January 2013 19:34, Nuno Magalhães wrote: > What's the configuration I should use, with the mib2c tool, to access > global functions. > For example for invoking unix shell commands with popen or system and > retrieving a value. There's no special configuration required for mib2c - just take the code template that it generates, and add the necessary #includes yourself. mib2c is designed to look after generating the SNMP-related aspects of the required code - writing the code that relates to the underlying system being monitored (i.e. how you retrieve the actual data) is your responsibility. Dave -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: Question regarding Tables in net-snmp
On 4 January 2013 18:21, Reza Salehi wrote:
> I put a printf("test"); inside the former one (
> athStatusTable_get_first_data_point() ).It gets called once if I run
> snmpget but still it gets called multiple time ( up to number of column in
> the table) if I run snmpwalk or snmptable.
Yes, that's correct.
This is the way that the iterator helper works.
You haven't shown how 'fill_table' works, but I suspect this
helper is probably not the best choice for your requirements.
> Maybe I need to run mib2c diffrently? or I am missing something here.
>
> The only problem is I need to put my function which fills the
> table somewhere to gets called once in response to snmptable or snmpwalk
What I would suggest is that you run
mib2c -S cache=1 -c mib2c.table_data,conf athStatusTable
This will include code to load the contents of the table into a local
cache, which will then be used to process requests. That 'load_table'
routine is essentially the same as your curent 'fill_table', and will be
called whenever the cache is regarded as "too old" to be used.
If you tweak the cache timeout to a suitable value, this will typically
be re-loaded at the start of a walk, and remain valid for the duration.
You could use the same cache approach with the iterator helper
as well, but the table_data helper is probably more efficient.
Dave
--
Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and
much more. Get web development skills now with LearnDevNow -
350+ hours of step-by-step video tutorials by Microsoft MVPs and experts.
SALE $99.99 this month only -- learn more at:
http://p.sf.net/sfu/learnmore_122812
___
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getting errorno 99 for snmptrapd
errno 99 "Can assign requested address" What does this mean and is there a way to fix this. Thank you. Amy Vanzant-Hodge -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
mib2c best configuration mode to access global functions
Hi, What's the configuration I should use, with the mib2c tool, to access global functions. For example for invoking unix shell commands with popen or system and retrieving a value. Can someone point me sample code. Thanks, Nuno Magalhães. -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: SNMP in netkit
[ First - *please* don't mail me privately, without copying any responses to the mailing list. I don't have the time or inclination to offer private, unpaid, SNMP consultancy. Keep discussions to the list, where others can both learn and offer advice. Thanks. ] On 4 January 2013 09:57, Alberto Andrés Rodríguez wrote: > > Dave, in case I type the command snmpgetnext -v 2c -c public localhost > .1.3.6.1.2.1.4.21 I get the following response: > RFC1213-MIB::ipRouteTable = No more variables left in this MIB view (It is > past the end of the MIB tree) Yes - that's what I thought you might get. > Searching in other forums I realized that this problem would be caused by a > bad configuration of snmp.conf. > If you think that would be other problem, please let me know No - I think you've found the most likely cause of the problem, The agent is typically configured to only report the system group by default, so you wouldn't be able to see anything from the ip group. Tweak the snmpd.conf file to allow wider access, and you should be fine. (See the FAQ entry I can see the system group, but nothing else. Why? for more details) Dave -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
Re: How to i configure default port from 162 to some other port
On 4 January 2013 03:05, Ashish Sharma wrote: > How do i configure snmptrap command to send trap to someother port like > (3211) instead of default port 162. > > I am trying with this command but it is not taking. > > snmptrap -v 1 -c -h 10.1.100.22:1622 "" "" 1 0 "" That's basically the right idea. Though did you really mean to specify the community string "-h" ? And this command is sending a trap to port 1622, rather than 3211 A more typical command would be something like snmptrap -v 1 -c public 10.1.100.22:3211 '' '' 1 - '' Dave -- Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 ___ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
