Error: DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.

endpoint · ‎09-10-2010

Hi,

I am getting bellow error messages with new wlan i created. On the same WLC i have three other wlans working OK. This wlan suppose to get authenticated with acs, i tried to disable the authentication but got same error message. With acs authentication, i am able to authenticate OK but cannot get ip address from dhcp server. DHCP server is on wlc, used by other three wlans ok. All wlans are on differnt subnets; vlans created where needed.Any ideas would be appreciated.

Thanks

Error from wlc:

*Sep 10 13:23:53.303: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.
*Sep 10 13:15:33.111: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.
*Sep 10 13:07:12.920: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.
*Sep 10 12:58:52.732: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.
*Sep 10 12:50:32.535: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.

Surendra BG · ‎09-13-2010

Whats the WLC model number and the software running?? it will great if you could delete that WLAN and reconfigure the same again and also the internal pool again.

Regards

Surendra.

Regards
Surendra BG

endpoint · ‎09-13-2010

Hi, all other WLANs are working fine and dhcp pool is doing its job OK.

Actually it was config issue: i have two WLCs, one of these two is configured as anchor WLC and it was matter if setting up WLAN to have anchor WLC configured. Once i did it, everything worked perfectly.

Thanks for your response.

Regards,

Aaron Miles · ‎03-31-2015

I know this is an old case but I just wanted to add to it in that I just had Cisco scratching there heads for 2 weeks about an issue where we had an AP (nothing special, same as our other 100 AP's) would not allow clients to connect to it.

As soon as they set a static IP for the service port (was DHCP and not connected) suddenly it started working.

Cisco engineer did not 'really' understand why it started working and why it only affected 1 AP, but i am just happy its fixed. The bug report really only classifies it as a minor annoyance (in reference to the message log filling up) but in our case it actually affected functionality. We are running the latest 7.4.130.0 FWIW

So just FYI...

Scott Fella · ‎03-31-2015

Old case, but at least it is coming up again.... I always look at the service port and make sure that it has a static address. This has been an issue in the past and still is. Always make it a best practice to define an address and you will not have to spend days or weeks chasing your tail:)

-Scott

-Scott
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mwright_js · ‎11-05-2010

%DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Binding service port failed.

This one perplexed me too, there is no answer on Cisco's website that I could find. I think I have the solution though....

Go to Monitor -> Interfaces -> Service-Port and have a look at the configuration.

I'm willing to bet that DHCP is enabled for the service port (the Ethernet interface on the left side of the controller that you may or may not use) and the Ethernet is either not connected or it's connected to a LAN where it can't get a DHCP lease.

What the controller is try trying to say is something like "%DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:374 Failed to get a DHCP address for the service port"

felix.windt · ‎11-11-2010

That was exactly it. Assigned a static IP instead and the error message stopped.

Thank you much!

hpenley · ‎04-19-2018

We replaced our DHCP server and were getting the error. We do not use DHCP on the WLC any more. We entered 0.0.0.0 for both the primary and secondary DHCP server entries on the service port and the issue went away.

sstrijak · ‎04-13-2011

Yes, I agree, disabling DHCP on service_port interface and configuring static IP address on that port stops the DHCP-3-BIND_SRPORT_ERR log messages. just fixed

endpoint · ‎04-14-2011

Hi, thanks all for responce, As i mentioned in previous respond the issue was fixed. Stateic IP address is not solution we are looking for.

Thanks again for prompt responces.

"

Hi, all other WLANs are working fine and dhcp pool is doing its job OK.

Actually it was config issue: i have two WLCs, one of these two is configured as anchor WLC and it was matter if setting up WLAN to have anchor WLC configured. Once i did it, everything worked perfectly.

Thanks for your response.

Regards,"

Yuliya S · ‎12-04-2013

See description of this bug:

https://tools.cisco.com/bugsearch/bug/CSCtl11385

alokbharadwaj · ‎03-27-2019

For Error in WLC: %DHCP-3-BIND_SRPORT_ERR: dhcp_support.c:373 Binding service port failed.

Go to Controller TAB -> Check the DHCP Protocol Box. If it is ticked then mark untick.