03-22-2012 05:58 PM - edited 07-03-2021 09:51 PM
Hi,
i am having problem on this set-up. i have made it work on other installation but i am having problem with last night's installation. clients are not getting ip address via external dhcp server. i have pointed the particular interface to the dhcp server (in the same subnet block), checked that dhcp proxy is enabled and it's not working. debug is posted and as i have seen it, dhcp server has replied to the dhcp discovery,
*DHCP Socket Task: Mar 22 20:31:11.719: 34:15:9e:84:76:dd DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:11.719: 34:15:9e:84:76:dd DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Mar 22 20:31:11.719: 34:15:9e:84:76:dd DHCP option: 55 (len 6) - skipping
*DHCP Socket Task: Mar 22 20:31:11.719: 34:15:9e:84:76:dd DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option: requested ip = 192.168.0.158
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option: lease time = 7776000 seconds
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option: message type = DHCP NAK
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:31:11.720: 34:15:9e:84:76:dd DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:12.848: 34:15:9e:84:76:dd DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:12.848: 34:15:9e:84:76:dd DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 55 (len 6) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: requested ip = 192.168.249.98
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: lease time = 7776000 seconds
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: message type = DHCP ACK
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 58 (len 4) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 59 (len 4) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: lease time = 86400 seconds
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: netmask = 255.255.255.0
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: gateway = 192.168.249.40
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: DNS server, cnt = 2, first = 208.67.220.220
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP option: 43 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:31:12.849: 34:15:9e:84:76:dd DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:21.437: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:31:25.436: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:25.436: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:25.437: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:34.436: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:31:51.434: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: requested ip = 192.168.249.150
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP NAK
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:32:04.172: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: requested ip = 192.168.249.150
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP NAK
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP option: server id = 192.168.249.1
*DHCP Socket Task: Mar 22 20:32:04.281: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:05.733: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:08.765: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:15.855: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*dtlArpTask: Mar 22 20:32:23.473: 00:21:5d:cc:98:04 In apfMsDhcpStateClear for station ---
*dtlArpTask: Mar 22 20:32:23.837: 00:21:5d:cc:98:04 In apfMsDhcpStateClear for station ---
*dtlArpTask: Mar 22 20:32:24.837: 00:21:5d:cc:98:04 In apfMsDhcpStateClear for station ---
*DHCP Socket Task: Mar 22 20:32:27.905: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:27.906: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: 116 (len 1) - skipping
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: 12 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: vendor class id = MSFT 5.0 (len
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: 55 (len 11) - skipping
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP option: 43 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:30.907: 00:21:5d:cc:98:04 DHCP options end, len 72, actual 64
*DHCP Socket Task: Mar 22 20:32:30.908: 00:21:5d:cc:98:04 DHCP Forwarding DHCP packet (332 octets) -- packet received on direct-connect port requires forwarding to external DHCP server. Next-hop is 192.168.249.40
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP option: vendor class id = dhcpcd 4.0.15 (len 13)
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Mar 22 20:32:31.383: cc:f9:e8:8e:5a:ba DHCP options end, len 72, actual 64
*** IDLE TIMEOUT ***
(Cisco Controller)
User:
03-24-2012 11:21 AM
Is this DHCP scope working? Can you jump onto the lan and see if you can get a DHCP from the server?
03-24-2012 11:26 AM
Just to add, make sure dhcp proxy is enabled on the wlc and the interface the users are placed on has the wlc management interface. These are required when using the wlc as a dhcp server for wireless clients.
Thanks,
Scott Fella
Sent from my iPhone
09-13-2022 03:25 PM
I have the same issue but am using an external dhcp server on an anchor. I get an IP though
*DHCP Socket Task: Sep 13 15:32:47.761: fe:2d:5e:42:a9:77 DHCP options end, len 72, actual 64
*DHCP Socket Task: Sep 13 15:32:47.761: fe:2d:5e:42:a9:77 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Sep 13 15:32:47.761: fe:2d:5e:42:a9:77 DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Sep 13 15:32:47.761: fe:2d:5e:42:a9:77 DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Sep 13 15:32:47.762: fe:2d:5e:42:a9:77 DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Sep 13 15:32:47.762: fe:2d:5e:42:a9:77 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Sep 13 15:32:47.762: fe:2d:5e:42:a9:77 DHCP option: requested ip = 10.146.116.150
*DHCP Socket Task: Sep 13 15:32:47.762: fe:2d:5e:42:a9:77 DHCP option: lease time = 7776000 seconds
03-25-2012 01:32 AM
yes, its working for the LAN users
03-24-2012 03:03 PM
Hi, I assume that the client is not in the same subnet as the management interface.
Per the best practices guide your DHCP server should not be in the same subnet as any dynamic interface. The WLC does not like ti see responses in the wire for a subnet it is configured for.
To get around this:
Config network mgmt-via-dynamic-interface enable.
You may also need ti issue:
Config network mgmt-via-wireless enable
Steve
Sent from Cisco Technical Support iPhone App
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