Dear all,
I've installed net-snmp successfully on my system. I am now trying to
understand snmp communication through the use of the simple demo application
found on the website. I've added the source file and the respective makefile.
When I pass the make command the following is the returned response:
C:\usr\include>make snmpdemoapp
gcc -I. `net-snmp-config --cflags` -c -o snmpdemoapp.o snmpdemoapp.c
/bin/sh: net-snmp-config: command not found
In file included from snmpdemoapp.c:1:0:
./net-snmp/net-snmp-config.h:1555:26: error: expected '=', ',', ';', 'asm' or '_
_attribute__' before 'uint32_t'
typedef unsigned __int32 uint32_t;
^
./net-snmp/net-snmp-config.h:1557:26: error: expected '=', ',', ';', 'asm' or '_
_attribute__' before 'uint64_t'
typedef unsigned __int64 uint64_t;
^
./net-snmp/net-snmp-config.h:1558:1: error: unknown type name '__int64'
typedef __int64 int64_t;
^
./net-snmp/net-snmp-config.h:1559:26: error: expected '=', ',', ';', 'asm' or '_
_attribute__' before 'uintmax_t'
typedef unsigned __int64 uintmax_t;
^
./net-snmp/net-snmp-config.h:1560:1: error: unknown type name '__int64'
typedef __int64 intmax_t;
^
In file included from ./net-snmp/session_api.h:265:0,
from ./net-snmp/library/snmp_client.h:32,
from ./net-snmp/varbind_api.h:79,
from ./net-snmp/library/snmp_api.h:28,
from ./net-snmp/types.h:387,
from ./net-snmp/definitions.h:22,
from ./net-snmp/net-snmp-includes.h:71,
from snmpdemoapp.c:2:
./net-snmp/library/snmpUDPIPv6Domain.h:20:40: warning: 'struct sockaddr_in6' dec
lared inside parameter list [enabled by default]
int local);
^
./net-snmp/library/snmpUDPIPv6Domain.h:20:40: warning: its scope is only this de
finition or declaration, which is probably not what you want [enabled by default
]
./net-snmp/library/snmpUDPIPv6Domain.h:31:38: warning: 'struct sockaddr_in6' dec
lared inside parameter list [enabled by default]
int remote_port);
^
In file included from ./net-snmp/session_api.h:268:0,
from ./net-snmp/library/snmp_client.h:32,
from ./net-snmp/varbind_api.h:79,
from ./net-snmp/library/snmp_api.h:28,
from ./net-snmp/types.h:387,
from ./net-snmp/definitions.h:22,
from ./net-snmp/net-snmp-includes.h:71,
from snmpdemoapp.c:2:
./net-snmp/library/snmpTCPIPv6Domain.h:20:8: warning: 'struct sockaddr_in6' decl
ared inside parameter list [enabled by default]
int local);
^
In file included from ./net-snmp/utilities.h:39:0,
from ./net-snmp/net-snmp-includes.h:74,
from snmpdemoapp.c:2:
./net-snmp/library/system.h:85:59: warning: 'struct timezone' declared inside pa
rameter list [enabled by default]
int gettimeofday(struct timeval *, struct timezone *tz);
^
make: *** [snmpdemoapp.o] Error 1
Does anyone know how I can solve this problem?
Thanks in anticipation.
Regards,
Chris
-----Original Message-----
From: Robert Story [mailto:rst...@freesnmp.com]
Sent: Friday, July 10, 2015 6:55 PM
To: SHAIK, Sofiya Parvin (Sofiya Parvin); Coders List
Subject: Re: Need some Help to understand get_first and get_next methos calls.
On Fri, 10 Jul 2015 05:27:56 +0000 Sofiya Parvin (Sofiya Parvin) wrote:
SSPP> Could you please help me. How snmptable command will internally
SSPP> calling get_first and get_next method. What is the exact code flow.
snmptable doesn't call get_first and get_next. Thos are part of the
handler/helper you are using in the agent. snmptable uses snmp GETNEXT commands
to walk a table.
SSPP> Because in one of our project we are using this snmptable command
SSPP> and we are writing our own sub agent to store the data snmptable.
SSPP> If I see the trace files whenever there is a snmptable command is
SSPP> triggered it is sequentially calling
SSPP>
SSPP> getFirst , getNext.............;
SSPP> getfirst,getNext.............................;
SSPP> getfirst,getNext.............................;
SSPP>
SSPP> we are not understanding what is the purpose of calling this
Is your table using the iterator helper? The iterator help is for unsorted
data, which means the help has to search through all the data, starting at the
beginning, to find the data needed to respond to a request.
SSPP> could u please help us why. Because this getFirst and getNext are
SSPP> making performance issue when the table is Huge ...example some
SSPP> 10,000 entries.
Yes, the iterator helper is a poor choice for a large table. You should look at
some of the other helpers which will sort the data, make it much faster to find
a particular row for processing.
Robert
--
Robert
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