Chapter 46 Neighbor Table
GS1920 Series User’s Guide
347
Status
This field displays whether the neighbor IPv6 interface is reachable. In IPv6, “reachable”
means an IPv6 packet can be correctly forwarded to a neighbor node (host or router) and the
neighbor can successfully receive and handle the packet. The available options in this field
are:
•
reachable (R): The interface of the neighboring device is reachable. (The Switch has
received a response to the initial request.)
•
stale (S): The last reachable time has expired and the Switch is waiting for a response to
another initial request. The field displays this also when the Switch receives an
unrequested response from the neighbor’s interface.
•
delay (D): The neighboring interface is no longer known to be reachable, and traffic has
been sent to the neighbor recently. The Switch delays sending request packets for a short
to give upper-layer protocols a chance to determine reachability.
•
probe (P): The Switch is sending request packets and waiting for the neighbor’s response.
•
invalid (IV): The neighbor address is with an invalid IPv6 address.
•
unknown (?): The status of the neighboring interface can not be determined for some
reason.
•
incomplete (I): Address resolution is in progress and the link-layer address of the neighbor
has not yet been determined. The interface of the neighboring device did not give a
complete response.
Type
This field displays the type of an address mapping to a neighbor interface. The available
options in this field are:
•
other (O): none of the following type.
•
local (L): A Switch interface is using the address.
•
dynamic (D): The IP address to MAC address can be successfully resolved using IPv6
Neighbor Discovery protocol. Is it similar as IPv4 ARP (Address Resolution protocol).
•
static (S): The interface address is statically configured.
Table 174
Management > Neighbor Table (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
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
