871w - wired clients get no IP using DHCP

[george]

attached to the message is a conf of a 871w router. for some reason wired clients cannot get IPs although wireless clients get them just fine. and if i try to see what is going on with 'debug ip dhcp packets' nothing is showing when connecting wired clients. any thoughts? thanks.

[sundar.palaniappan]

Hi,

It might sound silly, but are the wired client devices configured to get IP from DHCP?

Also, try enabling spanning-tree portfast on the switchports connected to users. STP convergence can cause problems with DHCP as the PCs mayn't wait long enough for the DHCP response and timeout prematurely.

HTH

Sundar

[george]

still no luck - enabling spanning-tree portfast didn't make any difference. one thing that is odd is when making an interface part of the VLAN 10 i get a message:

%Access VLAN 10 does not exist. Please add it to vlan database

is this what i should see? and if so any ideas on the DHCP issue? thanks.

p.s. client devices are configured to get IPs from DHCP server

[sundar.palaniappan]

Hi,

You need to create a vlan before assigning the port to that vlan. Most newer switches, create a vlan if one doesn't exist when you try to assign a port to a non-existent vlan. Create a vlan 10 as follows and assign the switchport to vlan 10 and see if that helps.

config t

vlan 10

HTH

Sundar

[george]

are you sure about 'vlan 10'? because the response is 'Invalid input detected' with the carrot under number 10. the only command that i can see that starts with vlan is 'vlan accounting'. thanks for your response.

[george]

the problem was related to the message:

%Access VLAN 10 does not exist. Please add it to vlan database

solution was:

vlan database

vlan 10

exit

this should be done in exec mode (not conf) - and that's what was giving me a problem - solved now