[cisco-voip] 7911s coming with hardcoded tftp server?

Tue Aug 24 15:33:14 EDT 2010

Awesome....never saw this message before :-)

I assume that "Remove support for CiscoCM1" was the only notable change
listed in that super secret bug?

Dear valued Cisco Bug Toolkit customer, the bug ID CSCsb56599 you
searched contains proprietary information that cannot be disclosed at
this time; therefore, we are unable to display the bug details. Please
note it is our policy to make all externally-facing bugs available in
Bug Toolkit to best assist our customers. As a result, the system
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While we are working to resolve this issue, we invite you to reach out
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It sounds like hardcoded TFTP servers on phones is a somewhat common
experience.  Is there a procedure for wiping the phone, or should I
continue to **# and delete the record when I find it on phones?...or is
there a better way that doesn't require menu navigation?

JM

________________________________

From: Wes Sisk [mailto:wsisk at cisco.com] 
Sent: Tuesday, August 24, 2010 2:15 PM
To: Madziarczyk, Jonathan
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 7911s coming with hardcoded tftp server?

Yes, 

Newer devices do not use the same TFTP/CM resolution sequence that older
devices did:
CSCsb56599    Remove support for CiscoCM1 

/Wes

Madziarczyk, Jonathan wrote: 

Thanks Brian,

Unfortunately that option doesn't seem to overwrite what's hardcoded on
the phone.  We already have option 150 set up on the DHCP server to
alleviate the problem that occurs with option 66 and PXE boot on PCs on
the same subnet as the phones (not recommended, I know, but some things
we can't fix as easily as others).

JM

________________________________

From: Brian Schultz [mailto:bms314 at gmail.com] 
Sent: Tuesday, August 24, 2010 11:31 AM
To: Madziarczyk, Jonathan
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 7911s coming with hardcoded tftp server?

I had a similar problem with 7925 phones.  I had to configure option 66
in my DHCP server and then they worked fine.  

Brian

On Tue, Aug 24, 2010 at 11:20 AM, Madziarczyk, Jonathan
<JMad at cityofevanston.org> wrote:

So I just got a batch of 7911G phones in and they wouldn't register to
save their lives.

After some investigation I found that they were all set with a hardcoded
TFTP server

(Option 8) TFTP Server 1: 131.248.46.128

Once I unlocked the phone (**#) I was able to delete the entry and the
phone autoconfiged and everything works fine now.

Has anyone seen this before?  I did an ARIN and it's a SE Asian address.

% APNIC found the following authoritative answer from: whois.apnic.net
% [whois.apnic.net node-2]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
inetnum:      131.248.0.0 - 131.248.255.255
netname:      CTC-NET
country:      JP
descr:        ITOCHU Techno-Solutions Corporation
admin-c:      HK64-AP
<http://wq.apnic.net/apnic-bin/whois.pl?searchtext=HK64-AP&form_type=adv
anced> 
tech-c:       HK64-AP
<http://wq.apnic.net/apnic-bin/whois.pl?searchtext=HK64-AP&form_type=adv
anced> 
status:       ASSIGNED PORTABLE
mnt-by:       MAINT-JPNIC
<http://wq.apnic.net/apnic-bin/whois.pl?searchtext=MAINT-JPNIC&form_type
=advanced> 
mnt-lower:    MAINT-JPNIC
<http://wq.apnic.net/apnic-bin/whois.pl?searchtext=MAINT-JPNIC&form_type
=advanced> 
changed:      hm-changed at apnic.net 20050408
changed:      ip-apnic at nic.ad.jp 20070115
source:       APNIC

Ideas on what's going on here?

JM

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