Chapter 26 IP Source Guard
ES3500 Series User’s Guide
222
Write delay timer
This field displays how long (in seconds) the Switch tries to complete a specific
update in the DHCP snooping database before it gives up.
Abort timer
This field displays how long (in seconds) the Switch waits to update the DHCP
snooping database after the current bindings change.
This section displays information about the current update and the next update of the
DHCP snooping database.
Agent running
This field displays the status of the current update or access of the DHCP snooping
database.
none: The Switch is not accessing the DHCP snooping database.
read: The Switch is loading dynamic bindings from the DHCP snooping database.
write: The Switch is updating the DHCP snooping database.
Delay timer expiry
This field displays how much longer (in seconds) the Switch tries to complete the
current update before it gives up. It displays Not Running if the Switch is not
updating the DHCP snooping database right now.
Abort timer expiry
This field displays when (in seconds) the Switch is going to update the DHCP
snooping database again. It displays Not Running if the current bindings have not
changed since the last update.
This section displays information about the last time the Switch updated the DHCP
snooping database.
Last succeeded time
This field displays the last time the Switch updated the DHCP snooping database
successfully.
Last failed time
This field displays the last time the Switch updated the DHCP snooping database
unsuccessfully.
Last failed reason
This field displays the reason the Switch updated the DHCP snooping database
unsuccessfully.
This section displays historical information about the number of times the Switch
successfully or unsuccessfully read or updated the DHCP snooping database.
Total attempts
This field displays the number of times the Switch has tried to access the DHCP
snooping database for any reason.
Startup failures
This field displays the number of times the Switch could not create or read the DHCP
snooping database when the Switch started up or a new URL is configured for the
DHCP snooping database.
Successful transfers
This field displays the number of times the Switch read bindings from or updated the
bindings in the DHCP snooping database successfully.
Failed transfers
This field displays the number of times the Switch was unable to read bindings from
or update the bindings in the DHCP snooping database.
Successful reads
This field displays the number of times the Switch read bindings from the DHCP
snooping database successfully.
Failed reads
This field displays the number of times the Switch was unable to read bindings from
the DHCP snooping database.
Successful writes
This field displays the number of times the Switch updated the bindings in the DHCP
snooping database successfully.
Failed writes
This field displays the number of times the Switch was unable to update the bindings
in the DHCP snooping database.
Database detail
First successful access This field displays the first time the Switch accessed the DHCP snooping database for
any reason.
Table 83
DHCP Snooping (continued)
LABEL
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
