SNMP Manager Programmer's Guide

Using Header Files, Data Structures, and Defines
SNMP Manager Programmer’s Guide–134249
4-4
Unencoded-Packet Structure (SNMP_PKT_T)
Unencoded-Packet Structure (SNMP_PKT_T)
This structure holds a request, response, or trap packet. The following fields in this
structure are of interest to Manager Services programmers; most of the field types are
typedefs listed earlier in Typedefs
on page 4-1.
lcl_ident
is a packet identifier.
snmp_version
describes the SNMP version the packet contents reflects. The following Manager
Services defines all equate to 0, the version indicator for SNMP Version 1:
#define VERSION_RFC1067 0
#define VERSION_RFC1098 0
#define VERSION_RFC1157 0
#define SNMP_VERSION_1 0
community
is used for the community string.
typedef struct SNMP_PKT_S
{
...
UINT_16_T lcl_ident
...
INT_32_T snmp_version;
...
EBUFFER_T community;
...
ATVALUE_T pdu_type;
ALENGTH_T pdu_length;
union {
struct {
INT_32_T request_id;
INT_32_T error_status;
INT_32_T error_index;
VBL_T std_vbl;
} std_pdu;
struct {
OBJ_ID_T enterprise_objid;
unsigned char net_address[4];
INT_32_T generic_trap;
INT_32_T specific_trap;
UINT_32_T trap_time_ticks;
VBL_T trap_vbl;
} trap_pdu;
} pdu;
...
} SNMP_PKT_T;