Re: A MIB file dilemma
The file system scenario was the closest example I could think of.
The device I am creating a MIB file for has ALOT of parameters which is
organized in a hierarchy must like a file system. Each node in the path can
have a few scalars(parameters), but most of them are at the end of a path (a
subsystem).
My application running against a test system created a MIB file with almost
5000 scalars and aprox 500 groups.
According to the SMIv2 (RFC 2578) descriptor names must be unique and mnemonic.
Using a hash is not exactly very mnemonic.
/Sverre
- Original Message -
Fra: Heiko Gerstung he...@am-anger-1.de
Til: net-snmp-users@lists.sourceforge.net
Sendt: 24. oktober 2012 16:00:25
Emne: Re: A MIB file dilemma
On 24.10.2012 14:07, Sverre Moe wrote:
I have come up with the following hack for names over 64 characters. I'm not
sure if this hack is a very good solution.
Truncate in the middle with the number of characters over 64 (+2) and replace
it with -.
std::string tmp_string = name;
const int length = tmp_string.length();
if (length 64) {
const int half = length / 2; //We truncate in the middle.
const int numberOff = (length - 64) + 2; //The number of characters to
truncate.
const std::string dash = -;
tmp_string = tmp_string.replace(half, numberOff, dash);
}
Sverre,
the stuff you seem to want to do with a MIB scares the hell out of me ;-) ...
Not sure what you want to achieve with that
(creating an SNMP file system). However, maybe you should take the MD5 hash of
the full path (echo $FILENAME | md5sum) and
use it as the name of the object and (for better readability) add a comment
-- this is file /etc/hosts -- or something
similar that helps you to find out which object is which file ...
Again: for all the possible things that I could come up with as a reason why
you are doing this, I would see a better
(non-MIB abusing :-)) alternative. But: what do I know :-)
Regards,
Heiko
P.S.: ...
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Re: A MIB file dilemma
Hi Sverre,
On 25.10.2012 08:50, Sverre Moe wrote:
The file system scenario was the closest example I could think of.
The device I am creating a MIB file for has ALOT of parameters which is
organized in a hierarchy must like a file system. Each node in the path can
have a few scalars(parameters), but most of them are at the end of a path (a
subsystem).
I see, thanks for the explanation.
My application running against a test system created a MIB file with almost
5000 scalars and aprox 500 groups.
OK.
According to the SMIv2 (RFC 2578) descriptor names must be unique and
mnemonic. Using a hash is not exactly very mnemonic.
I know. But since it seems that you yourself cannot come up with 5000 unique
and mnemonic names (at least not
programmatically/automatically) while being limited to 64 chars, a hash at
least meets the unique requirement.
Regards,
Heiko
/Sverre
- Original Message -
Fra: Heiko Gerstung he...@am-anger-1.de
Til: net-snmp-users@lists.sourceforge.net
Sendt: 24. oktober 2012 16:00:25
Emne: Re: A MIB file dilemma
On 24.10.2012 14:07, Sverre Moe wrote:
I have come up with the following hack for names over 64 characters. I'm not
sure if this hack is a very good solution.
Truncate in the middle with the number of characters over 64 (+2) and
replace it with -.
std::string tmp_string = name;
const int length = tmp_string.length();
if (length 64) {
const int half = length / 2; //We truncate in the middle.
const int numberOff = (length - 64) + 2; //The number of characters to
truncate.
const std::string dash = -;
tmp_string = tmp_string.replace(half, numberOff, dash);
}
Sverre,
the stuff you seem to want to do with a MIB scares the hell out of me ;-) ...
Not sure what you want to achieve with that
(creating an SNMP file system). However, maybe you should take the MD5 hash
of the full path (echo $FILENAME | md5sum) and
use it as the name of the object and (for better readability) add a
comment -- this is file /etc/hosts -- or something
similar that helps you to find out which object is which file ...
Again: for all the possible things that I could come up with as a reason why
you are doing this, I would see a better
(non-MIB abusing :-)) alternative. But: what do I know :-)
Regards,
Heiko
P.S.: ...
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in
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Re: A MIB file dilemma
On 25 October 2012 07:50, Sverre Moe sve...@spacetec.no wrote:
The file system scenario was the closest example I could think of.
The device I am creating a MIB file for has ALOT of parameters
which is organized in a hierarchy must like a file system. Each node
in the path can have a few scalars(parameters), but most of them
are at the end of a path (a subsystem).
Typically how deep is this hierarchy?
How meaningful are the individual names?
How _long_ are the individual names?
My application running against a test system created a MIB file with almost
5000 scalars and aprox 500 groups.
According to the SMIv2 (RFC 2578) descriptor names must be unique and
mnemonic. Using a hash is not exactly very mnemonic.
You could always try a combination of both names and hash values.
Given a path such as
/one/two/three/four/five/six/seven/node
possibilities for the final MIB object name might include:
{hash}-node(hash of directory path)
one-{hash}-node (use root in full)
six-seven-{hash}-node (use selected directories in full)
ottffss-{hash}-node (use initials of directories)
ottff-six-seven-{hash}-node (use initials plus selected directories)
one-ttffs-seven-{hash}-node (ditto)
In each case, the hash would be probably be calculated over
/one/two/three/four/five/six/seven in order to keep related scalars together.
You know what the path heirarchy actually looks like,
so are best positioned to decide which elements are best
taken in full, which can be taken using initials, and which
omitted altogether.
But that should give you some ideas to work with.
Dave
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Re: A MIB file dilemma
Not very deep. Each system is different, but I don't think more than 5-8
levels.
Individual names can be from 5 to 20 characters long. Also since some paths can
have either status, config, cmd(command) I prefix with these strings on the
scalar names (which adds to build up length of characters).
I'll look into using hash in the descriptor name, in part or in full.
/Sverre
- Original Message -
Fra: Dave Shield d.t.shi...@liverpool.ac.uk
Til: Sverre Moe sve...@spacetec.no
Kopi: Heiko Gerstung he...@am-anger-1.de,
net-snmp-users@lists.sourceforge.net
Sendt: 25. oktober 2012 09:32:26
Emne: Re: A MIB file dilemma
On 25 October 2012 07:50, Sverre Moe sve...@spacetec.no wrote:
The file system scenario was the closest example I could think of.
The device I am creating a MIB file for has ALOT of parameters
which is organized in a hierarchy must like a file system. Each node
in the path can have a few scalars(parameters), but most of them
are at the end of a path (a subsystem).
Typically how deep is this hierarchy?
How meaningful are the individual names?
How _long_ are the individual names?
My application running against a test system created a MIB file with almost
5000 scalars and aprox 500 groups.
According to the SMIv2 (RFC 2578) descriptor names must be unique and
mnemonic. Using a hash is not exactly very mnemonic.
You could always try a combination of both names and hash values.
Given a path such as
/one/two/three/four/five/six/seven/node
possibilities for the final MIB object name might include:
{hash}-node (hash of directory path)
one-{hash}-node (use root in full)
six-seven-{hash}-node (use selected directories in full)
ottffss-{hash}-node (use initials of directories)
ottff-six-seven-{hash}-node (use initials plus selected directories)
one-ttffs-seven-{hash}-node (ditto)
In each case, the hash would be probably be calculated over
/one/two/three/four/five/six/seven in order to keep related scalars together.
You know what the path heirarchy actually looks like,
so are best positioned to decide which elements are best
taken in full, which can be taken using initials, and which
omitted altogether.
But that should give you some ideas to work with.
Dave
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conformance and compliance.
I am in the process of defining a new module entity (SMI_v2) with 800+ objects beneath. Now, I have finished defining the module identity finished adding objects underneath. But I haven't taken care of the conformance and compliance as I don't know what they are. In regards to this, #1 Are conformance compliance must for all module entity on SMI_v2? #2 What do they actually mean? Thanks,Vincent. -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct___ 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
Attaching a MIB Module into a C++ program
I am trying to attach a MIB Module into my C++ program. Making it an AgentX
subagent. Any help/suggestion is appreciated.
I followed the MIB Module Tutorial on Net-SNMP, created myself a MIB module
with 3 scalars.
Then running the command net-snmp-config --compile-subagent mysnmp mysnmp.c
Executing the following snmpget localhost -v2c -c public
1.3.6.1.4.1.40463.1.1.0
And it output a test string I hard coded into mysnmp MIB module. Worked fine.
snmpget localhost -v2c -c public 1.3.6.1.4.1.40463.1.1.0
SNMPv2-SMI::enterprises.40463.1.1.0 = STRING: mysnmp
I have baked Net-SNMP into my C++ program (trying to make my C++ program an
AgentX subagent). To check if it worked like an AgentX, I just used the same
MIB module from my mysnmp I made following the tutorial. Move the code from
mysnmp.c into myclient.cpp. Compiled fine, ran fine, but did not get any result
back.
snmpget localhost -v2c -c public 1.3.6.1.4.1.40463.1.1.0
SNMPv2-SMI::enterprises.40463.1.1.0 = No Such Object available on this agent at
this OID
I have put the following Net-SNMP initialization code in my main:
main.cpp
int background = 0; // change this if you want to run in the background.
int syslog = 0; // change this if you want to use syslog.
// print log errors to syslog or stderr.
if (syslog)
snmp_enable_calllog();
else
snmp_enable_stderrlog();
// make us a agentx client.
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
// run in background, if requested.
if (background netsnmp_daemonize(1, !syslog)) { exit(1); }
// initialize tcpip, if necessary.
SOCK_STARTUP;
// initialize the agent library.
init_agent(my-snmp-deamon);
myclient client;
client.run();
myclient.cpp
extern C {
#include net-snmp/net-snmp-config.h
#include net-snmp/net-snmp-includes.h
#include net-snmp/agent/net-snmp-agent-includes.h
void init_vacm_vars();
void init_usmUser();
Netsnmp_Node_Handler handle_snmp;
}
const oid mysnmp_oid[] = { 1,3,6,1,4,1,40463,1 };
const oid mysnmpInfo_oid[] = { 1,3,6,1,4,1,40463,1,1 };
const oid mysnmpPlacementCountry_oid[] = { 1,3,6,1,4,1,40463,1,2 };
con st oid mysnmpCounter_oid[] = { 1,3,6,1,4,1,40463,1,3 };
myclient::myclient() :
_mainloop(Glib::MainLoop::create())
{
netsnmp_register_scalar_group(
netsnmp_create_handler_registration(mysnmp,
handle_snmp,
group_oid,
OID_LENGTH(group_oid),
HANDLER_CAN_RONLY
), 1, 3);
//Runs the Main Event Loop
Glib::signal_idle().connect(
sigc::bind_return(sigc::mem_fun(*this, myclient::mainloop), true)
);
}
void myclient::run() {
_mainloop-run(); //Running Main Event Loop
}
myclient::mainloop() {
if (_snmp_ready) {
agent_check_and_process(1); /* 0 == don't block */
}
}
int
handle_snmp(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests) {
void* datapointer;
char buffer[200];
int dataint;
int length = 0;
u_char type;
const oid* request_oid = (*reginfo).rootoid;
if (netsnmp_oid_equals(request_oid, 9, mysnmpInfo_oid, 9) == 0) { //OID_LENGTH(
mysnmpInfo_oid )
strcpy(buffer, mysnmp);
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
} else if (netsnmp_oid_equals(request_oid, 9, mysnmpPlacementCountry_oid, 9) ==
0) {
strcpy(buffer, mysnmp2);
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
} else if (netsnmp_oid_equals(request_oid, 9, mysnmpCounter_oid, 9) == 0) {
dataint = 1234;
datapointer = dataint;
length = sizeof(dataint);
type = ASN_INTEGER;
} else {
strcpy(buffer, UNKNOWN_OID);
datapointer = buffer;
length = strlen(buffer);
type = ASN_OCTET_STR;
}
switch(reqinfo-mode) {
case MODE_GET:
snmp_set_var_typed_value(requests-requestvb,
type,
datapointer,
length);
break;
default:
/* we should never get here, so this is a really bad error */
snmp_log(LOG_ERR, unknown mode (%d) in handle_snmp\n, reqinfo-mode );
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
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Re: website is down?
On 2012-10-23, Allen Chan allen.c...@five9.com wrote: I am unable to reach http://www.net-snmp.org/ in the browser. Ping and nmap= shows 80 is open. This isn't uncommon for sourceforge vhosts from time to time. -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct ___ 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
troubleshooting pass-persist feature of SNMP
Hi all, We are trying to figure out how to troubleshoot the pass-persist feature of SNMP. Our NMS is monitoring a bunch of OIDs that goes through pass-persist and perl scripts. On the NMS side we continually see network errors, and we see that it is all related to OIDs offered by pass-persist. Is there a way to see throughput, errors, or other troubleshooting information on the pass-persist feature? Thanks, Allen Chan CONFIDENTIALITY NOTICE: This e-mail and any files attached may contain confidential information of Five9 and/or its affiliated entities. Access by the intended recipient only is authorized. Any liability arising from any party acting, or refraining from acting, on any information contained in this e-mail is hereby excluded. If you are not the intended recipient, please notify the sender immediately, destroy the original transmission and its attachments and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Copyright in this e-mail and any attachments belongs to Five9 and/or its affiliated entities. -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct___ 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
PASS OID and C++ SCRIPT
Hello Guys!
I have a problem, Its a new issue that I cannot figure it out and I
couldnt find any documentation about this.
The situation is this,
In my snmpd.conf file i have this line: pass .1.3.6.1.4.1.6147.2.1
/usr/share/cacti/scripts/TDP/binarios/ClearCodeGroup2
Note: ClearCodeGroup2 is a simple C++ script that have been compiled and
its code is this:
#include cstdio
#include cstdlib
#include iostream
#include sstream
#include string
#include vector
#include set
#include map
#include fstream
using namespace std;
int main(int argc, char *argv[])
{;
cout.1.3.6.1.4.1.6147.2.1\n;
coutInteger32\n;
cout321224;
return 0;
}
This little program works EXCELLENT! As you can see:
root@cacti:/usr/share/cacti/scripts/TDP/binarios# snmpget -m TDP-MIB -v
2c -c TM_Com_Pub localhost .1.3.6.1.4.1.6147.2.1
TDP-MIB::ClearCodeGroup1 = INTEGER: 321224
...but when i try to read the value for the OID from a
/anyfile.txt,
int main(int argc, char *argv[])
{
string comando;
char valor;
comando=cat
/anyfile.txt | grep \ALL GTP PDP context\ | awk
'{pr$
cout.1.3.6.1.4.1.6147.2.1\n;
coutInteger32\n;
coutcomando;
return 0;
}
the snmpgetnext doesnt work anymore and gives me this error.
root@cacti:/usr/share/cacti/scripts/TDP/binarios# snmpget -m TDP-MIB -v
2c -c TM_Com_Pub localhost .1.3.6.1.4.1.6147.2.1
TDP-MIB::PDPContextsNumber = No Such Instance currently exists at this
OID
I have test my C++ Script, and it works like i want and return me this:
root@cacti:/usr/share/cacti/scripts/TDP/binarios# ./ClearCodeGroup2
.1.3.6.1.4.1.6147.2.1
Integer32
321224
It's seems that Im forgetting something!! but i dont know what. I hope you
can help me out with this.
Hernán Romano Curo
Network Operation Center (NOC)
Phone: +51 1 6001818 (Opción 4)
Descripción: Descripción: global
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