NetView SNMP query engine trace
This topic discusses the output produced by the SNMP query stack trace.
Figure 1 shows an example of the output produced by the SNMP query stack trace. This trace was produced by starting the SNMP query stack address space with start option -d 4, which is the maximum amount of trace records produced. In the figure, the column labeled "trc lvl" shows the lowest trace level required to see that particular trace entry. For example, lines five through nine have a "trc lvl" of four. This means that only the -d 4 trace option shows this type of trace entry. On the other hand, lines 10 through 17 have a "trc lvl" of two. This means that trace level two or higher produces this trace information.
Guideline: The column headed "line no." numbers the trace records for reference in the discussion
that follows the figure. Neither the "trc lvl" nor the "line
no." column appear in the actual trace output.
The following sequence of events occurred to create the
trace output:
- Started the SNMP query stack address space
Trace output lines in the range 1–3
- Started the SNMPIUCV subtask at the NetView® host (attempted connection to the
query stack when started)
Trace output line 4
- Issued an SNMP TRAPSON request (request 1001)
Trace output lines in the range 5–27
- Incoming SNMP Trap-PDU received from SNMP agent
Trace output lines in the range 28–61
- Issued an SNMP TRAPSOFF request (request 1002)
Trace output lines in the range 62–82
- Incoming SNMP Trap-PDU received from SNMP agent
Trace output lines in the range 83–104
- Issued an SNMP GET request (request 1003)
Trace output lines in the range 105–148
- Received the response to request 1003
Trace output lines in the range 149–191
- Issued an SNMP GETNEXT request (request 1004)
Trace output lines in the range 192–235
- Received the response to request 1004
Trace output lines in the range 236–278
- Issued an SNMP SET request (request 1005)
Trace output lines in the range 279–326
- Received the response to request 1005
Trace output lines in the range 327–369
- Issued an SNMP MIBVNAME request (request 1006)
Trace output lines in the range 370–397
- Issued an SNMP PING request (request 1007)
Trace output lines in the range 398–429
- Issued an SNMP GET request for a variable name not defined in
the hlq.MIBDESC.DATA data set (request 1008)
Trace output lines in the range 430–462
- Stopped the SNMPIUCV subtask of the NetView program
Trace output line 463
Figure 1. SNMP query engine
traces
trc line
lvl no.
3 1 EZA6322I Using 'TCPCS.mibdesc.data' as MIB description file
0 2 EZA6275I SNMP Query Stack running and awaiting queries...
2 3 EZA6276I There are 56 client connections possible
0 4 EZA6290I Accepted new client connection
4 5 EZA6292I Received following NVquery packet:
6 EZA6305I dumping packet of 19 bytes:
7 00 11 01 01 01 02 06 00 00 03 e9 00 00 00 00 00
8 00 00 00
2 9 EZA6359I major version: 1
10 EZA6360I minor version: 1
11 EZA6361I release: 1
12 EZA6363I native set: EBCDIC
13 EZA6364I packet type: TRAP REQUEST
14 EZA6394I filter id: 1001
15 EZA6396I network mask: 0.0.0.0
16 EZA6397I desired network: 0.0.0.0
2 17 EZA6359I major version: 1
18 EZA6360I minor version: 1
19 EZA6361I release: 1
20 EZA6363I native set: EBCDIC
21 EZA6364I packet type: RESPONSE
22 EZA6367I sequence id: 1001
23 EZA6388I major error: 0
24 EZA6389I minor error: 0
25 EZA6390I error index: 0
26 EZA6391I error text len: 9
27 EZA6392I error text: no error
4 28 EZA6301I Received following SNMP_trap packet:
29 EZA6305I dumping packet of 43 bytes:
30 30 29 02 01 00 04 04 4d 56 53 4c a4 1e 06 0a 2b
31 06 01 04 01 02 02 01 02 04 40 04 09 43 72 25 02
32 01 04 02 01 00 43 02 25 80 30 00
3 33 EZA6424I Decoded SNMP PDU :
34 {
35 version version-1,
36 community '4d56534c'H,
37 data {
38 trap {
39 enterprise 1.3.6.1.4.1.2.2.1.2.4,
40 agent-addr {
41 internet '09437225'H
42 },
43 generic-trap authenticationFailure,
44 specific-trap 0,
45 time-stamp 9600,
46 variable-bindings {}
47 }
48 }
49 }
4 50 EZA6359I major version: 1
51 EZA6360I minor version: 1
52 EZA6361I release: 1
53 EZA6363I native set: EBCDIC
54 EZA6364I packet type: TRAP
55 EZA6394I filter id: 1001
56 EZA6395I agent address: 9.67.114.37
57 EZA6399I generic trap: 4 ( 0X4 )
58 EZA6400I specific trap: 0 ( 0X0 )
59 EZA6401I time stamp: 9600
60 EZA6402I enterprise len: 22
61 EZA6403I enterprise: 1.3.6.1.4.1.2.2.1.2.4
4 62 EZA6292I Received following NVquery packet:
63 EZA6305I dumping packet of 15 bytes:
64 00 0d 01 01 01 02 07 00 00 03 ea 00 00 03 e9
2 65 EZA6359I major version: 1
66 EZA6360I minor version: 1
67 EZA6361I release: 1
68 EZA6363I native set: EBCDIC
69 EZA6364I packet type: TRAP UN-REQUEST
70 EZA6367I sequence id: 1002
71 EZA6394I filter id: 1001
2 72 EZA6359I major version: 1
73 EZA6360I minor version: 1
74 EZA6361I release: 1
75 EZA6363I native set: EBCDIC
76 EZA6364I packet type: RESPONSE
77 EZA6367I sequence id: 1002
78 EZA6388I major error: 0
79 EZA6389I minor error: 0
80 EZA6390I error index: 0
81 EZA6391I error text len: 9
82 EZA6392I error text: no error
4 83 EZA6301I Received following SNMP_trap packet:
84 EZA6305I dumping packet of 43 bytes:
85 30 29 02 01 00 04 04 4d 56 53 4c a4 1e 06 0a 2b
86 06 01 04 01 02 02 01 02 04 40 04 09 43 72 25 02
87 01 04 02 01 00 43 02 38 40 30 00
3 88 EZA6424I Decoded SNMP PDU :
89 {
90 version version-1,
91 community '4d56534c'H,
92 data {
93 trap {
94 enterprise 1.3.6.1.4.1.2.2.1.2.4,
95 agent-addr {
96 internet '09437225'H
97 },
98 generic-trap authenticationFailure,
99 specific-trap 0,
100 time-stamp 14400,
101 variable-bindings {}
102 }
103 }
104 }
4 105 EZA6292I Received following NVquery packet:
106 EZA6305I dumping packet of 42 bytes:
107 00 28 01 01 01 02 01 00 00 03 eb 00 05 d4 e5 e2
108 d3 00 00 05 e2 d5 d4 d7 00 00 03 01 ff 01 00 0a
109 e2 e8 e2 e4 d7 e3 c9 d4 c5 00
2 110 EZA6359I major version: 1
111 EZA6360I minor version: 1
112 EZA6361I release: 1
113 EZA6363I native set: EBCDIC
114 EZA6364I packet type: GET
115 EZA6367I sequence id: 1003
116 EZA6368I hostname len: 5
117 EZA6370I hostname: MVSL
118 EZA6371I community len: 5
119 EZA6373I community: SNMP
120 EZA6374I optional length: 3
121 EZA6375I max. retries: 1
122 EZA6376I initial timeout: 255
123 EZA6377I backoff exponent: 1
124 EZA6380I name length: 16
125 EZA6381I name: 1.3.6.1.2.1.1.3
3 126 EZA6424I Decoded SNMP PDU :
127 {
128 version version-1,
129 community '534e4d50'H,
130 data {
131 get-request {
132 request-id 1,
133 error-status noError,
134 error-index 0,
135 variable-bindings {
136 {
137 name 1.3.6.1.2.1.1.3,
138 value {
139 simple {
140 empty {}
141 }
142 }
143 }
144 }
145 }
146 }
147 }
148 EZA6308I sending SNMP request to 9.67.114.37
4 149 EZA6295I Received following SNMP_response packet:
150 EZA6305I dumping packet of 39 bytes:
151 30 25 02 01 00 04 04 53 4e 4d 50 a2 1a 02 01 01
152 02 01 00 02 01 00 30 0f 30 0d 06 07 2b 06 01 02
153 01 01 03 43 02 48 a8
3 154 EZA6424I Decoded SNMP PDU :
155 {
156 version version-1,
157 community '534e4d50'H,
158 data {
159 get-response {
160 request-id 1,
161 error-status noError,
162 error-index 0,
163 variable-bindings {
164 {
165 name 1.3.6.1.2.1.1.3,
166 value {
167 application-wide {
168 ticks 18600
169 }
170 }
171 }
172 }
173 }
174 }
175 }
2 176 EZA6359I major version: 1
177 EZA6360I minor version: 1
178 EZA6361I release: 1
179 EZA6363I native set: EBCDIC
180 EZA6364I packet type: RESPONSE
181 EZA6367I sequence id: 1003
182 EZA6388I major error: 0
183 EZA6389I minor error: 0
184 EZA6390I error index: 0
185 EZA6391I error text len: 9
186 EZA6392I error text: no error
187 EZA6380I name length: 16
188 EZA6381I name: 1.3.6.1.2.1.1.3
189 EZA6382I value type: time ticks
190 EZA6384I value length: 4
191 EZA6387I value: 18600
4 192 EZA6292I Received following NVquery packet:
193 EZA6305I dumping packet of 42 bytes:
194 00 28 01 01 01 02 02 00 00 03 ec 00 05 d4 e5 e2
195 d3 00 00 05 e2 d5 d4 d7 00 00 03 01 ff 01 00 0a
196 c9 c6 c4 c5 e2 c3 d9 4b f0 00
2 197 EZA6359I major version: 1
198 EZA6360I minor version: 1
199 EZA6361I release: 1
200 EZA6363I native set: EBCDIC
201 EZA6364I packet type: GET-NEXT
202 EZA6367I sequence id: 1004
203 EZA6368I hostname len: 5
204 EZA6370I hostname: MVSL
205 EZA6371I community len: 5
206 EZA6373I community: SNMP
207 EZA6374I optional length: 3
208 EZA6375I max. retries: 1
209 EZA6376I initial timeout: 255
210 EZA6377I backoff exponent: 1
211 EZA6380I name length: 22
212 EZA6381I name: 1.3.6.1.2.1.2.2.1.2.0
3 213 EZA6424I Decoded SNMP PDU :
214 {
215 version version-1,
216 community '534e4d50'H,
217 data {
218 get-next-request {
219 request-id 2,
220 error-status noError,
221 error-index 0,
222 variable-bindings {
223 {
224 name 1.3.6.1.2.1.2.2.1.2.0,
225 value {
226 simple {
227 empty {}
228 }
229 }
230 }
231 }
232 }
233 }
234 }
235 EZA6308I sending SNMP request to 9.67.114.37
4 236 EZA6295I Received following SNMP_response packet:
237 EZA6305I dumping packet of 47 bytes:
238 30 2d 02 01 00 04 04 53 4e 4d 50 a2 22 02 01 02
239 02 01 00 02 01 00 30 17 30 15 06 0a 2b 06 01 02
240 01 02 02 01 02 01 04 07 49 42 4d 20 4c 43 53
3 241 EZA6424I Decoded SNMP PDU :
242 {
243 version version-1,
244 community '534e4d50'H,
245 data {
246 get-response {
247 request-id 2,
248 error-status noError,
249 error-index 0,
250 variable-bindings {
251 {
252 name 1.3.6.1.2.1.2.2.1.2.1,
253 value {
254 simple {
255 string '49424d204c4353'H
256 }
257 }
258 }
259 }
260 }
261 }
262 }
2 263 EZA6359I major version: 1
264 EZA6360I minor version: 1
265 EZA6361I release: 1
266 EZA6363I native set: EBCDIC
267 EZA6364I packet type: RESPONSE
268 EZA6367I sequence id: 1004
269 EZA6388I major error: 0
270 EZA6389I minor error: 0
271 EZA6390I error index: 0
272 EZA6391I error text len: 9
273 EZA6392I error text: no error
274 EZA6380I name length: 22
275 EZA6381I name: 1.3.6.1.2.1.2.2.1.2.1
276 EZA6382I value type: display string
277 EZA6384I value length: 7
278 EZA6385I value: IBM LCS
4 279 EZA6292I Received following NVquery packet:
280 EZA6305I dumping packet of 57 bytes:
281 00 37 01 01 01 02 03 00 00 03 ed 00 05 d4 e5 e2
282 d3 00 00 05 e2 d5 d4 d7 00 00 03 01 ff 01 00 10
283 c4 d7 c9 e2 c1 d4 d7 d3 c5 d5 e4 d4 c2 c5 d9 00
284 00 00 06 f1 f2 f3 f4 f5 00
2 285 EZA6359I major version: 1
286 EZA6360I minor version: 1
287 EZA6361I release: 1
288 EZA6363I native set: EBCDIC
289 EZA6364I packet type: SET
290 EZA6367I sequence id: 1005
291 EZA6368I hostname len: 5
292 EZA6370I hostname: MVSL
293 EZA6371I community len: 5
294 EZA6373I community: SNMP
295 EZA6374I optional length: 3
296 EZA6375I max. retries: 1
297 EZA6376I initial timeout: 255
298 EZA6377I backoff exponent: 1
299 EZA6380I name length: 22
300 EZA6381I name: 1.3.6.1.4.1.2.2.1.4.1
301 EZA6382I value type: number
302 EZA6384I value length: 4
303 EZA6386I value: 12345
3 304 EZA6424I Decoded SNMP PDU :
305 {
306 version version-1,
307 community '534e4d50'H,
308 data {
309 set-request {
310 request-id 3,
311 error-status noError,
312 error-index 0,
313 variable-bindings {
314 {
315 name 1.3.6.1.4.1.2.2.1.4.1,
316 value {
317 simple {
318 number 12345
319 }
320 }
321 }
322 }
323 }
324 }
325 }
326 EZA6308I sending SNMP request to 9.67.114.37
4 327 EZA6295I Received following SNMP_response packet:
328 EZA6305I dumping packet of 42 bytes:
329 30 28 02 01 00 04 04 53 4e 4d 50 a2 1d 02 01 03
330 02 01 00 02 01 00 30 12 30 10 06 0a 2b 06 01 04
331 01 02 02 01 04 01 02 02 30 39
3 332 EZA6424I Decoded SNMP PDU :
333 {
334 version version-1,
335 community '534e4d50'H,
336 data {
337 get-response {
338 request-id 3,
339 error-status noError,
340 error-index 0,
341 variable-bindings {
342 {
343 name 1.3.6.1.4.1.2.2.1.4.1,
344 value {
345 simple {
346 number 12345
347 }
348 }
349 }
350 }
351 }
352 }
353 }
2 354 EZA6359I major version: 1
355 EZA6360I minor version: 1
356 EZA6361I release: 1
357 EZA6363I native set: EBCDIC
358 EZA6364I packet type: RESPONSE
359 EZA6367I sequence id: 1005
360 EZA6388I major error: 0
361 EZA6389I minor error: 0
362 EZA6390I error index: 0
363 EZA6391I error text len: 9
364 EZA6392I error text: no error
365 EZA6380I name length: 22
366 EZA6381I name: 1.3.6.1.4.1.2.2.1.4.1
367 EZA6382I value type: number
368 EZA6384I value length: 4
369 EZA6386I value: 12345
4 370 EZA6292I Received following NVquery packet:
371 EZA6305I dumping packet of 29 bytes:
372 00 1b 01 01 01 02 08 00 00 03 ee 00 10 f1 4b f3
373 4b f6 4b f1 4b f2 4b f1 4b f1 4b f1 00
2 374 EZA6359I major version: 1
375 EZA6360I minor version: 1
376 EZA6361I release: 1
377 EZA6363I native set: EBCDIC
378 EZA6364I packet type: VAR_NAME
379 EZA6367I sequence id: 1006
380 EZA6405I object id len: 16
381 EZA6406I object id: 1.3.6.1.2.1.1.1
2 382 EZA6359I major version: 1
383 EZA6360I minor version: 1
384 EZA6361I release: 1
385 EZA6363I native set: EBCDIC
386 EZA6364I packet type: RESPONSE
387 EZA6367I sequence id: 1006
388 EZA6388I major error: 0
389 EZA6389I minor error: 0
390 EZA6390I error index: 0
391 EZA6391I error text len: 9
392 EZA6392I error text: no error
393 EZA6380I name length: 16
394 EZA6381I name: 1.3.6.1.2.1.1.1
395 EZA6382I value type: display string
396 EZA6384I value length: 9
397 EZA6385I value: sysDescr
4 398 EZA6292I Received following NVquery packet:
399 EZA6305I dumping packet of 23 bytes:
400 00 15 01 01 01 02 0a 00 00 03 ef 00 05 d4 e5 e2
401 d3 00 00 03 01 ff 01
2 402 EZA6359I major version: 1
403 EZA6360I minor version: 1
404 EZA6361I release: 1
405 EZA6363I native set: EBCDIC
406 EZA6364I packet type: PING REQUEST
407 EZA6367I sequence id: 1007
408 EZA6368I hostname len: 5
409 EZA6370I hostname: MVSL
410 EZA6374I optional length: 3
411 EZA6375I max. retries: 1
412 EZA6376I initial timeout: 255
413 EZA6377I backoff exponent: 1
2 414 EZA6359I major version: 1
415 EZA6360I minor version: 1
416 EZA6361I release: 1
417 EZA6363I native set: EBCDIC
418 EZA6364I packet type: RESPONSE
419 EZA6367I sequence id: 1007
420 EZA6388I major error: 0
421 EZA6389I minor error: 0
422 EZA6390I error index: 0
423 EZA6391I error text len: 9
424 EZA6392I error text: no error
425 EZA6380I name length: 34
426 EZA6381I name: 1.3.6.1.4.1.2.2.1.3.2.9.67.114.37
427 EZA6382I value type: number
428 EZA6384I value length: 4
429 EZA6386I value: 76
4 430 EZA6292I Received following NVquery packet:
431 EZA6305I dumping packet of 39 bytes:
432 00 25 01 01 01 02 01 00 00 03 f0 00 05 d4 e5 e2
433 d3 00 00 05 e2 d5 d4 d7 00 00 03 01 ff 01 00 07
434 c2 c1 c4 e5 c1 d9 00
1 435 EZA6356E error code 7: unknown MIB variable
2 436 EZA6359I major version: 1
437 EZA6360I minor version: 1
438 EZA6361I release: 1
439 EZA6363I native set: EBCDIC
440 EZA6364I packet type: GET
441 EZA6367I sequence id: 1008
442 EZA6368I hostname len: 5
443 EZA6370I hostname: MVSL
444 EZA6371I community len: 5
445 EZA6373I community: SNMP
446 EZA6374I optional length: 3
447 EZA6375I max. retries: 1
448 EZA6376I initial timeout: 255
449 EZA6377I backoff exponent: 1
450 EZA6380I name length: 2
451 EZA6381I name: ?
2 452 EZA6359I major version: 1
453 EZA6360I minor version: 1
454 EZA6361I release: 1
455 EZA6363I native set: EBCDIC
456 EZA6364I packet type: RESPONSE
457 EZA6367I sequence id: 1008
458 EZA6388I major error: 2
459 EZA6389I minor error: 7
460 EZA6390I error index: 0
461 EZA6391I error text len: 17
462 EZA6392I error text: unknown variable
0 463 EZA6293I Terminated client connectionThe following is an explanation of the traces in Figure 1.
- Line 1 is an information message listing the actual name of the data set being used as the hlq.MIBDESC.DATA data set.
- Line 2 is an informational message indicating that the SNMP query stack has been successfully started.
- Line 3 is an informational message indicating the number of client connections the query stack allows. (A client connection is a connection from a program using the query stack protocol to communicate with the SNMP query stack to initiate SNMP requests. For example, the SNMPIUCV subtask of the NetView program is a client connection).
- Line 4 is an information message indicating that the SNMPIUCV subtask of the NetView program has successfully contacted the query stack.
- Lines 5–8 are the encoded packet received from the client (the SNMPIUCV subtask) by the query stack. This particular packet is the TRAPSON request.
- Lines 9–16 are the decoded SNMPIUCV request. The decoded packet indicates that this request is number 1001 (line 14), and was a TRAPSON request (line 13) for network mask 0.0.0.0 (line 15) with the desired network 0.0.0.0 (line 16).
- Lines 17–27 are the response sent back to SNMPIUCV from the query stack. The response (line 21) is to request number 1001 (line 22) and indicates that the TRAPSON request was successful (lines 23–27).
- Line 28 indicates that an SNMP Trap-PDU was received. Lines 29–32 are the actual BER encoded SNMP packet as it was received by the query stack.
- Lines 33–49 are the decoded version of the trap packet reported by lines 28–32.
- Lines 50–61 are the trap information being passed from the query stack up to the SNMPIUCV subtask to be displayed to the NetView operator. This trap is being forwarded to the NetView program because the IP address of the agent sending the trap (line 56), when ANDed with the network mask (line 15) matches the desired network (line 16) of filter number 1001 (line 55) that was set by the TRAPSON request 1001 (line 14) received previously (lines 9–16).
- Lines 62–64 show an incoming query stack packet sent from SNMPIUCV to the query stack.
- Lines 65–71 are the decoded packet received in lines 62–64. This packet is the TRAPSOFF request (line 69). It requests that trap filter 1001 (line 71) be turned off.
- Lines 72–82 are the response from the query stack to the SNMPIUCV subtask. The response indicates that the TRAPSOFF request was completed successfully (lines 78–82).
- Lines 83–87 indicate that another SNMP Trap-PDU was received from an agent.
- Lines 88–104 are the decoded Trap-PDU. Note that following this decoded PDU, there is no indication of the trap being forwarded to SNMPIUCV. This is because the trap filter has been turned off, so the query stack receives the trap but does not forward the information to SNMPIUCV.
- Lines 105–109 indicate another request from SNMPIUCV being received by the query stack.
- Lines 110–125 are the decoded query stack request. The request from SNMPIUCV was to issue a GetRequest-PDU (line 114) to host MVSL (line 117), using community name SNMP (line 119) and requesting variable 1.3.6.1.2.1.1.3 (line 125). Lines 121–123 are the retry information that SNMPIUCV has gotten from the SNMPARMS member of the DSIPARMS data set.
- Lines 126–147 are the decoded SNMP GetRequest-PDU that the query stack has built as a result of the SNMPIUCV request received in lines 110–125. This PDU has been assigned request number 1 (line 132). This number is used to correlate the response when it is received.
- Line 148 indicates that the encoded SNMP GetRequest-PDU has been sent to the SNMP agent at the specified IP address. This should be the IP address of the host specified in line 117.
- Line 149 indicates that an SNMP GetResponse-PDU was received. Lines 150–153 are the encoded GetResponse-PDU.
- Lines 154–175 are the decoded GetResponse-PDU. This was a GetResponse (line 159) in response to request number 1 (line 160, matches up to the request number in the request, line 132). The request was completed with no errors (lines 161–162). The requested variable 1.3.6.1.2.1.1.3 (line 165) has a value of 18600 timeticks (line 168).
- Lines 176–191 are the query stack response to SNMPIUCV request number 1003 (lines 115 and 181). The response contains the information received from the agent in the GetResponse-PDU in lines 154–175.
- Lines 192–196 are the next query stack protocol requests received from SNMPIUCV by the query stack.
- Lines 197–212 are the decoded version of the query stack request. This is a GetNext request (line 201) to host MVSL (line 204) for variable 1.3.6.1.2.1.2.2.1.2.0 (line 212). The request number associated with this request is 1004 (line 202).
- Lines 213–234 are the decoded SNMP GetRequest-PDU built as a result of the query stack request received in lines 197–212. This GetRequest-PDU is request number 2 (line 219).
- Line 235 indicates that the encoded GetRequest-PDU has been sent to the requested host.
- Lines 236–240 indicate that a GetResponse-PDU has been received.
- Lines 241–262 are the decoded GetResponse-PDU. This is the response to request number 2 (line 247) for variable 1.3.6.1.2.1.2.2.1.2.1 (line 252). The value of the variable is a display string with the ASCII value of X'49424D204C4353' (line 255). The GetNext request completed successfully (lines 248–249).
- Lines 263–278 are the query stack response to SNMPIUCV request 1004 (line 268). The response contains the information from the GetResponse-PDU (lines 241–262). Note that the variable value in line 255 has been converted to the proper display format in line 278.
- Lines 279–284 are the next query stack protocol request from SNMPIUCV to the query stack.
- Lines 285–303 are the decoded query stack request. It is a SET request (line 289) to host MVSL to set variable 1.3.6.1.4.1.2.2.1.4.1 (line 300) to 12345 (line 303). This is request number 1005 (line 290).
- Lines 304–325 are the decoded SNMP SetRequest-PDU built as a result of the request received in lines 285–303. This is request number 3 (line 310).
- Line 326 indicates that the SetRequest-PDU has been sent to the specified host.
- Lines 327–331 indicate that a GetResponse-PDU has been received.
- Lines 332–353 are the decoded GetResponse-PDU. This PDU is the response to the SetRequest-PDU number 3 (line 338). It was completed successfully (lines 339–340) and variable 1.3.6.1.4.1.2.2.1.4.1 (line 343) was set to 12345 (line 346).
- Lines 354–369 are the query stack response to request 1005 (line 359) containing the information received in the GetResponse-PDU received in lines 332–353.
- Lines 370–373 are the next query stack request packet from SNMPIUCV.
- Lines 374–381 are the decoded query stack request. This is a MIBVNAME request (line 378) requesting the name of variable 1.3.6.1.2.1.1.1 (line 381). The request number is 1006 (line 379).
- Lines 382–397 are the query stack response (line 386) to request 1006 (line 387). The request completed successfully (lines 388–392) and the name of variable 1.3.6.1.2.1.1.1 (line 394) is sysDescr (line 397).
- Lines 398–401 are the next query stack request packet from SNMPIUCV.
- Lines 402–413 are the decoded query stack request packet. This is a PING request (line 406) to ping host MVSL (line 409). The request number is 1007 (line 407).
- Lines 414–429 are the query stack response (line 418) to request 1007 (line 419). The PING completed successfully (lines 420–424) and the round-trip response time was 76 milliseconds (line 429). Note that no SNMP PDUs were generated as a result of the PING request. The SNMP query stack uses a raw socket to send a PING to the requested host and SNMP protocols are not involved.
- Lines 430–434 are the next query stack request packet received from SNMPIUCV.
- Line 435 indicates that an error occurred while the query stack was decoding the request packet. The MIB variable name in the request was unknown to the query stack.
- Lines 435–451 are the decoded query stack request. This is a GET request (line 440). The variable name is unknown (line 451). This is request 1008 (line 441).
- Lines 452–462 are the query stack response (line 456) to SNMPIUCV request 1008 (line 457). The request was unsuccessful. The query stack returns major error code 2 (line 458), minor error code 7 (line 459), unknown variable (line 462). Note that no SNMP PDUs were generated since the query stack could not resolve the variable name.
- Line 463 indicates that the client connection (SNMPIUCV) has been terminated. This is the result of the STOP TASK=SNMPIUCV command.