Re: IP Phone 7911 tftp partial firmware load

d_sergienko · ‎08-28-2022

Hi all,

I have old 7911 phone which randomly stops loading firmware via TFTP.

The process begins as expected, phone loads term11.default.loads, then jar11sip.8-2-0-55.sbn, cnu11.8-2-0-55.sbn, apps11.8-2-0-55.sbn and no more.

It may stop loading file partially. It may be any of sbn files listed above, but it never goes beyond apps11 file.

TFTP server is retransmitting packets but phone does not respond.

Video of this process: https://youtu.be/TxYmJ41rmtc

Screen contents:

phone screen when it stuck

Phone is connected to Catalyst 3750X with the following port DHCP settings:

ip dhcp pool internal_net
 network 192.168.255.0 255.255.255.0
 dns-server 8.8.8.8 8.8.4.4 
 default-router 192.168.255.254 
 option 43 ascii "10.100.0.240"
 option 150 ip 192.168.255.10          ! <--- TFTP server address, and the phone gets IP 192.168.255.13
!

interface GigabitEthernet0/8
 description phone-test
 switchport mode access
 switchport voice vlan untagged
 switchport voice detect cisco-phone full-duplex
 load-interval 30
 no vtp
 spanning-tree portfast edge
!

Is there any idea what causing this problem and how to fix it?

Thanks

-

Dmitry

acampbell · ‎08-29-2022

Hi,

Can you give a try to removing the voice vlan config from the port on the 3750x
Just try as an access port till the phone is loaded, as its an older phone the port config
may be hindering the flow.

!
interface GigabitEthernet0/8
shutdown
description phone-test
switchport mode access
no switchport voice vlan untagged
no switchport voice vlan
no shutdown
!

Regards, Alex. Please rate useful posts.

d_sergienko · ‎08-29-2022

Hi Alex,

Thanks for reply.

In this case phone does not want to connect to TFTP server at all.

Here are port & dhcp config (tried both options 66 and 150) at catalyst:

ip dhcp pool ipphone
 host 192.168.255.13 255.255.255.0
 client-identifier 01e8.ba70.070e.5e
 client-name ipphone
 dns-server 8.8.8.8 8.8.4.4 
 default-router 192.168.255.254 
 option 150 ip 192.168.255.10 
 option 66 ip 192.168.255.10 
!
Current configuration : 91 bytes
!
interface GigabitEthernet0/6
 load-interval 30
 no vtp
 spanning-tree portfast edge
end

And below is DHCP debug:

*Jan 26 02:35:04.041: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Gi0/6 for pak.  Was Vl1
*Jan 26 02:35:04.041: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Vl1 for pak.  Was Gi0/6
*Jan 26 02:35:04.041: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Gi0/6 for pak.  Was Vl1
*Jan 26 02:35:04.041: DHCP_SNOOPING: received new DHCP packet from input interface (GigabitEthernet0/6)
*Jan 26 02:35:04.041: DHCP_SNOOPING: process new DHCP packet, message type: DHCPREQUEST, input interface: Gi0/6, MAC da: ffff.ffff.ffff, MAC sa: e8ba.7007.0e5e, IP da: 255.255.255.255, IP sa: 192.168.255.13, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 0.0.0.0, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: e8ba.7007.0e5e
*Jan 26 02:35:04.041: DHCP_SNOOPING: message type : DHCPREQUEST DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 0.0.0.0, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: e8ba.7007.0e5e
*Jan 26 02:35:04.041: DHCP_SNOOPING_SW: bridge packet get invalid mat entry: FFFF.FFFF.FFFF, packet is flooded to ingress VLAN: (1)
*Jan 26 02:35:04.041: DHCP_SNOOPING_SW: bridge packet send packet to cpu port: Vlan1.
*Jan 26 02:35:04.041: DHCPD: Reload workspace interface Vlan1 tableid 0.
*Jan 26 02:35:04.041: DHCPD: tableid for 192.168.255.253 on Vlan1 is 0
*Jan 26 02:35:04.041: DHCPD: tableid for 192.168.255.254 on Vlan1 is 0
*Jan 26 02:35:04.041: DHCPD: client's VPN is .
*Jan 26 02:35:04.041: DHCPD: DHCPREQUEST received from client 01e8.ba70.070e.5e.
*Jan 26 02:35:04.041: DHCPD: Sending notification of ASSIGNMENT:
*Jan 26 02:35:04.041:  DHCPD: address 192.168.255.13 mask 255.255.255.0
*Jan 26 02:35:04.041:   DHCPD: htype 1 chaddr e8ba.7007.0e5e
*Jan 26 02:35:04.041:   DHCPD: lease time remaining (secs) = 4294967295
*Jan 26 02:35:04.041:   DHCPD: interface = Vlan1
*Jan 26 02:35:04.041:   DHCPD: out_vlan_id 0
*Jan 26 02:35:04.041: DHCPD: Sending DHCPACK to client 01e8.ba70.070e.5e (192.168.255.13).
*Jan 26 02:35:04.041: DHCPD: no option 125
*Jan 26 02:35:04.041: DHCPD: broadcasting BOOTREPLY to client e8ba.7007.0e5e.
*Jan 26 02:35:04.041: DHCP_SNOOPING: received new DHCP packet from input interface (Vlan1)
*Jan 26 02:35:04.041: DHCP_SNOOPING: process new DHCP packet, message type: DHCPACK, input interface: Vl1, MAC da: ffff.ffff.ffff, MAC sa: 2c54.2d2c.e940, IP da: 255.255.255.255, IP sa: 192.168.255.253, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 192.168.255.13, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: e8ba.7007.0e5e
*Jan 26 02:35:04.049: DHCP_SNOOPING: message type : DHCPACK DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 192.168.255.13, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: e8ba.7007.0e5e
*Jan 26 02:35:04.049: DHCPD: no option 125
*Jan 26 02:35:04.049: DHCP_SNOOPING: direct forward dhcp replyto output port: GigabitEthernet0/6.

And here the contents of phone's screen:

d_sergienko · ‎09-04-2022

I solved this issue.

Disabling on interface CDP and LLDP protocols helped to fully load firmware.

OR I still admit the device is buggy and just started to work normally...

qaisarabbbas1999 · ‎09-04-2022

I am new in this forum. I have some questions about this forum. These questions are shown below:

https://community.cisco.com/t5/ip-telephony-and-phones/ip-phone-7911-tftp-partial-firmware-load/td-p/4677075

If anyone has information about this thread. Please guide me below. I am very confused about that .