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HG8245H doesn't forward D...

HG8245H doesn't forward DHCP packets over LAN

Created: Aug 15, 2018 17:31:05Latest reply: Nov 2, 2018 02:16:38 6949 7 1 0 0
  Rewarded HiCoins： 0 (problem resolved)
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Hello there, Community!


This post is about the issue that HG8245H doesn't forward DHCP packets over LAN. Please check below information.


Huawei HG8245H


ISSUE DESCRIPTION


HG8245H drops DHCP packets that are sent to LAN and prevent my devices from loading by PXE. I can not install a new OS, cannot update the firmware for my devices over the network.


There is an option:


Enable DHCP Relay:

in LAN --> DHCP Server Configuration, but it doesn't have any effect. If I download the configuration settings, it is always 0. Looks like a bug in the router. There are other question on the internet that confirm that this Huawei router doesn't cooperate with other DHCP servers in the LAN.


POSSIBLE SOLUTION


Maybe there is some setting that can be turned on/off. Maybe new firmware is needed. Please advise.


  • HWVer: 6B4.E;


  • SWVer: V3R016C10S150.

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Best answer

(1) (0)
xiaoh
Created Aug 16, 2018 03:07:56

Hi there!

Enable DHCP L2 Relay. Tthe function depends on the model of the WAN:

• If the mode of the WAN port is Route, the IP address of the ONT is obtained from upper-layer DHCP servers in different subnets and the user-side IP addresses are obtained from the DHCP address pool of the ONT.

• If the mode of the WAN port is Bridge, the ONT functions as a bridge. In this way, the ONT does not have an IP address. The user-side IP addresses are obtained from upper-layer DHCP servers in different subnets.

Because the message is probably not enough, if this can not solve your problem, please send an email to your TAC. They will guide you to do the troubleshooting.
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user_4237671
user_4237671 Created Jan 15, 2022 07:44:24 (0) (0)
 
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2#
roddick
roddick Created Aug 15, 2018 17:42:33

you can send email to TAC for troubleshooting, they can give you a quick support.

Link: Eusupport@huawei.com
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3#
xiaoh
xiaoh Created Aug 16, 2018 03:07:56

Hi there!

Enable DHCP L2 Relay. Tthe function depends on the model of the WAN:

• If the mode of the WAN port is Route, the IP address of the ONT is obtained from upper-layer DHCP servers in different subnets and the user-side IP addresses are obtained from the DHCP address pool of the ONT.

• If the mode of the WAN port is Bridge, the ONT functions as a bridge. In this way, the ONT does not have an IP address. The user-side IP addresses are obtained from upper-layer DHCP servers in different subnets.

Because the message is probably not enough, if this can not solve your problem, please send an email to your TAC. They will guide you to do the troubleshooting.
View more
  • x
  • convention：

user_4237671
user_4237671 Created Jan 15, 2022 07:44:24 (0) (0)
 
(0) (0)
4#
abitrolly
abitrolly Created Aug 19, 2018 09:36:12

"WAN Mode" is Route WAN. Take a note that the problem is with LAN to LAN DHCP packets that are needed for network boot.
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5#
abitrolly
abitrolly Created Aug 19, 2018 16:53:53

TAC support asks me for the contract number signed with Huawei. I didn't buy this modem from Huawei, and I don't have this number. Does that mean the modem is some kind of vendor-locked device with custom firmware that produces this bug?
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6#
GongXiaochuan
GongXiaochuan Created Oct 23, 2018 07:16:04

This post was last edited by GongXiaochuan at 2018-10-24 06:19. if you can put the configuration snapshot for your ONT, maybe we can easily understand what was the issue.
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7#
chenhui
chenhui Admin Created Nov 2, 2018 02:16:38

@abitrolly if you can put the configuration snapshot for your ONT, maybe we can easily understand what was the issue.
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