Got it

option 66

Latest reply: Dec 3, 2019 01:25:21 574 2 0 0


i have ip phone that needs to have a dynamic ip @ and ip of tftp server so i configured a dhcp server on a s67200 huwaei switch.

the configuration is the follow :

 dhcp server gateway-list

 dhcp server excluded-ip-address

 dhcp server lease day 2 hour 0 minute 0

 dhcp server dns-list

 dhcp server domain-name xxxx.lcl

 dhcp server option 64 ip-address

 dhcp server option 66 ip-address

 dhcp server option 67 ascii lanpbxconf

The phone have a valid ip adress but fails to obtain the tftp adress.

I've tried to change  dhcp server option 66 ascii but I have the same result ...

Any idea why I have this and how to correct it ?

thank you.

  • x
  • convention:

Admin Created Dec 3, 2019 01:25:21 Helpful(0) Helpful(0)

@user_3606116 hello,
as far as I know, option 66 is used to identify a TFTP server when the "sname" field in the DHCP header has been used for DHCP options, in other words, it indicates the server name rather than the ip address.
from RFC 5859, option 150 defines the TFTP server address.
View more
  • x
  • convention:

user_3606116 Created Dec 3, 2019 09:33:45
I've configured the option 64 as a suboption of 43 :
option 43 sub-option 64 ip-address  


You need to log in to comment to the post Login | Register

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."

My Followers

Login and enjoy all the member benefits


Huawei Enterprise Support Community
Huawei Enterprise Support Community
Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Please bind your phone number to obtain invitation bonus.