[cisco-voip] ITL File regeneration question

Tue Nov 21 16:36:07 EST 2017

I just made a side to side compare of the old itl vs. the new itl and the only difference in the signature field:

Old ITL:
12SIGNATURE256
42  78  1c  54  ff  6e  d3  aa
11  a2  1e  7a  92  73  fd  cd
7d  18  4e  10  c7  ee  c6  44
21  d2  99  29  79  56  3e  6
4b  74  d1  7a  ad  dd  7c  49
38  ed  33  9d  f6  a5  c1  9d
7a  b4  aa  77  e1  5f  2d  c5
32  f6  40  82  a5  6c  14  2b
ba  c8  38  4e  ba  f8  92  fe
3  d2  57  11  79  33  37  35
9c  4e  24  db  b8  17  3d  b7
84  ef  21  18  e5  2c  32  d0
e  90  fa  d7  98  6a  a6  f2
a6  3c  1a  64  85  49  30  c0
82  0  c5  4e  73  80  cf  c8
76  d4  65  b9  9d  6d  82  bc
c  b4  f9  27  8b  ad  37  3a
ec  3d  af  d2  3d  37  80  21
81  80  b9  89  f6  d  10  51
65  9d  52  1  f4  13  95  15
1  9f  b5  8f  96  19  56  27
af  b0  ba  49  95  44  b5  da
f8  85  a5  4  ed  53  d7  53
49  8a  1a  f0  19  e3  69  37
42  2a  40  94  5  cb  70  b4
77  31  60  6d  1b  94  45  b5
df  7  bb  3a  cb  c2  53  9c
d1  5  e2  33  b6  af  ce  f7
81  d2  43  84  68  19  aa  32
33  c  7f  4a  45  42  b6  a6
ed  c9  90  1a  5e  83  92  4d
1d  41  5d  10  c5  dd  3b  34

Versus

New ITL:
12SIGNATURE256
92  a0  c4  85  4f  1f  5f  11
f  41  1a  2f  b9  2b  2d  fd
a7  e0  6a  f8  32  8  bc  31
6e  40  9a  7a  c4  74  23  af
49  26  34  5  2c  8b  81  e0
82  57  8b  f7  9c  57  63  d8
2d  77  e2  eb  f6  b8  bb  84
d6  2  92  bf  fa  5c  5  71
8  e4  b2  d2  cf  32  2a  ac
f4  fa  ac  fd  74  7  67  ff
76  1b  13  9b  82  a7  39  b7
c6  76  a3  6d  54  a8  ed  3f
18  ae  e9  8e  8d  f5  5b  c4
d2  2f  e1  29  ac  24  89  40
c8  ae  db  a3  3b  83  a8  33
44  21  fb  b9  54  fe  f2  29
b1  dc  9b  aa  7e  59  98  b4
54  6b  f9  38  dd  e7  fc  a7
93  fc  86  6d  ea  c1  c6  33
8b  91  63  9a  d  1d  18  a6
f0  51  9e  96  3  f  68  13
7e  ef  ba  ba  e2  9  59  d1
31  2a  1e  71  65  a8  ea  d2
8  eb  16  5  76  8c  b1  73
d7  f7  ba  21  c6  cd  38  46
2e  9d  eb  50  18  8f  b5  dc
af  a8  57  e9  6f  13  3a  c3
96  bd  c4  58  56  6  5b  f7
f9  85  41  b1  f4  c3  34  59
d1  86  ed  82  bc  e0  fd  61
7  4b  ca  bd  47  81  2c  22
d2  a1  4a  29  c9  aa  3a  0

The rest is identical.

De: bmeade90 at gmail.com [mailto:bmeade90 at gmail.com] En nombre de Brian Meade
Enviado el: martes, 21 de noviembre de 2017 05:32 p.m.
Para: ROZA, Ariel <Ariel.ROZA at LA.LOGICALIS.COM>
CC: cisco-voip at puck.nether.net
Asunto: Re: [cisco-voip] ITL File regeneration question

TFTP Restart will regenerate the ITL but it shouldn't actually change the contents if there wasn't any certificate/hostname changes.

On Tue, Nov 21, 2017 at 3:28 PM, ROZA, Ariel <Ariel.ROZA at la.logicalis.com<mailto:Ariel.ROZA at la.logicalis.com>> wrote:
Hi, people!

A quick question for which I can´t find a clear answer (I can infer it, but I need to be certain):

Is the ITL file regenerated only when an action triggers it, or it is also regenerated when restarting the TFTP?

So far, I know that the ITL is regenerated when there´s an IP or hostname change, or a certificate is regenerated/updated/deleted, but… does it change when I restart the TFTP or should it remain static?

i.e.

I am troubleshooting an install I am not familiar with. And I ran a “show ilt” and it showed me this timestamp:

The ITL File was last modified on Mon Oct 30 16:55:23 PET 2017

Then, I restarted the TFTP service and see this timestamp:

The ITL File was last modified on Tue Nov 21 14:07:04 PET 2017

Does that mean that between those dates something related to the certificates has changed or is it just the TFTP restart that does it?
I compared the ITL file before and after and seems similar. Also all the certs are valid and not one looks regenerated or replaced in recent times.

Regards,

Ariel.

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