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Does STP affect downstrea...

Does STP affect downstream terminals to obtain IP addresses through DHCP?

Created: Dec 31, 2021 11:21:59Latest reply: Dec 31, 2021 11:22:27 123 1 0 0 0
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Hello everyone,

I have a problem today:

Router-switch-PC

The PC cannot obtain the IP address assigned by DHCP. After STP is disabled on the switch, the PC can obtain the IP address. Does anybody explain why?

As I understand it, STP should not affect DHCP.

The basic topology is as follows:

 

Does STP affect downstream terminals to obtain IP

The router is H3C 310 and the switch is Huawei 1730S.


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DDSN
Admin Created Dec 31, 2021 11:22:27

Hi Rengar,

Enabling STP to obtain an IP address takes a long time because STP role election takes a long time. The maximum value is 50 seconds (20 + 15 + 15). Some network adapters fail to be obtained and the network adapters do not retry.

It is recommended that the port connected to the host be an STP edge port.

# Configure GE0/0/1 as an edge port.

<HUAWEI> system-view

[HUAWEI] interface gigabitethernet 0/0/1

[HUAWEI-GigabitEthernet0/0/1] stp edged-port enable

I hope it helps!


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DDSN
DDSN Admin Created Dec 31, 2021 11:22:27

Hi Rengar,

Enabling STP to obtain an IP address takes a long time because STP role election takes a long time. The maximum value is 50 seconds (20 + 15 + 15). Some network adapters fail to be obtained and the network adapters do not retry.

It is recommended that the port connected to the host be an STP edge port.

# Configure GE0/0/1 as an edge port.

<HUAWEI> system-view

[HUAWEI] interface gigabitethernet 0/0/1

[HUAWEI-GigabitEthernet0/0/1] stp edged-port enable

I hope it helps!


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  • convention：
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