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

Madziarczyk, Jonathan JMad at cityofevanston.org
Tue Aug 24 14:20:55 EDT 2010


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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