DHCP Failover, one DHCP Server Partners Supnet is deactivated, Clients losing network connectivity for 3 sec. after renewing they IP Adress

Hello,
currently we are using two W2K12R2 DHCP server configured in "load balance Mode". On DHCP1 the IP-scope with failover partnership to DHCP2 is deactivated. DHCP2 is working fine. Now we register that 50 percent of our clients (W2K8R2 application
server) losing the network connectivity for 3 sec. after rereleasing they IP-Address. On DHCP2 servers eventlog we receive a lot of
BINDING ACK reject events 20291 and 20292 for these IP addresses entries.
These 3 sec. of loosing they Network connectivity is our big Problem because the Client application (W2K8R2 application server) cannot handle these timeout. It looks like a
DISCOVER-OFFER-REQUEST-NAK cycle that are described here:
http://blogs.technet.com/b/teamdhcp/archive/2014/02/26/dhcp-failover-patch-to-address-a-reservation-issue-and-another-issue-related-to-failover-partner-not-accepting-state-transition-from-bad-address-gt-active-has-been-released.aspx#pi47623=2
there is a solution to prevent the 3 sec network failure?
Rgds

Hi Steffen,
Have you applied KB2919355 in the server?
If issue persists, please check the detailed information about the event. It will tell us why does the server send the NAK.
Best Regards.
Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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    ve:0x20460080e5361152:360080e500036115200000b315294458d)
    [2015-02-01 16:38:25 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdd-7:0:0:2 (unde
    f:0x20470080e5361152:360080e500036115200000b36529447cb)
    [2015-02-01 16:38:25 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdj-9:0:0:2 (acti
    ve:0x20460080e5361152:360080e500036115200000b36529447cb)
    [2015-02-01 16:38:25 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdf-7:0:0:4 (unde
    f:0x20470080e5361152:360080e500036115200000b39529448ba)
    [2015-02-01 16:38:25 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdl-9:0:0:4 (acti
    ve:0x20460080e5361152:360080e500036115200000b39529448ba)
    [2015-02-01 16:38:25 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdc-7:0:0:1 (acti
    ve:0x20470080e5361152:360080e500037683a00000b1652944694)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdi-9:0:0:1 (unde
    f:0x20460080e5361152:360080e500037683a00000b1652944694)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sde-7:0:0:3 (acti
    ve:0x20470080e5361152:360080e500037683a00000b18529448bf)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdk-9:0:0:3 (unde
    f:0x20460080e5361152:360080e500037683a00000b18529448bf)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdg-7:0:0:5 (acti
    ve:0x20470080e5361152:360080e500037683a00000b1a529449ac)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_SD] sdm-9:0:0:5 (unde
    f:0x20460080e5361152:360080e500037683a00000b1a529449ac)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-5 (360080e5000
    36115200000b39529448ba)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-1 (360080e5000
    36115200000b36529447cb)
    [2015-02-01 16:38:26 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-0 (360080e5000
    37683a00000b1652944694)
    [2015-02-01 16:38:27 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-2 (360080e5000
    37683a00000b18529448bf)
    [2015-02-01 16:38:27 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-3 (360080e5000
    37683a00000b1a529449ac)
    [2015-02-01 16:38:27 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:25 {STORAGE} [ADD_DM] dm-4 (360080e5000
    36115200000b315294458d)
    [2015-02-01 16:38:29 10444] DEBUG (monitor:36) Cluster state changed from [Unknown] to [DLM_Ready]
    [2015-02-01 16:38:29 10444] INFO (notification:47) Notification sent: {CLUSTER} {MONITOR} Cluster state changed from [Unknown] to [D
    LM_Ready]
    [2015-02-01 16:38:29 10441] INFO (notificationserver:139) Sending notification: {CLUSTER} {MONITOR} Cluster state changed from [Unkn
    own] to [DLM_Ready]
    [2015-02-01 16:38:33 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:33 {NETWORK} net : ADD : eth4 (1)
    [2015-02-01 16:38:36 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:36 {NETWORK} net : ADD : eth5 (1)
    [2015-02-01 16:38:39 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:39 {NETWORK} net : ADD : eth6 (0)
    [2015-02-01 16:38:42 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:42 {NETWORK} net : ADD : eth7 (1)
    [2015-02-01 16:38:45 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:45 {NETWORK} net : ADD : eth0 (1)
    [2015-02-01 16:38:48 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:48 {NETWORK} net : ADD : eth1 (1)
    [2015-02-01 16:38:51 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:51 {NETWORK} net : ADD : eth2 (0)
    [2015-02-01 16:38:54 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:54 {NETWORK} net : ADD : eth3 (1)
    [2015-02-01 16:38:57 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:38:57 {NETWORK} net : ADD : bond0 (1)
    [2015-02-01 16:39:00 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:39:00 {NETWORK} net : ADD : bond1 (1)
    [2015-02-01 16:39:03 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:39:03 {NETWORK} net : ADD : bond1.590 (1)
    [2015-02-01 16:39:06 10441] INFO (notificationserver:139) Sending notification: Feb  1 16:39:06 {NETWORK} net : ADD : bond1.90 (1)
    [2015-02-01 16:40:56 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) None&c=8&s=
    1422808694292&lb=p&t=2&p=%3Ccom.oracle.odof.OdofIdentifier%3E%3Clong%3E943%3C%2Flong%3E%3C%2Fcom.oracle.odof.OdofIdentifier%3E%2Ccom
    pareTo%2Cjava.lang.Object%2CNone%2C5'
    [2015-02-01 16:41:05 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) https://10.
    90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1767abc
    [2015-02-01 16:41:26 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) https://10.
    90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1767abc
    [2015-02-01 16:41:47 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) https://10.
    90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1767abc
    [2015-02-01 16:42:05 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) https://10.
    90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1767abc
    [2015-02-01 16:42:26 10441] ERROR (notificationserver:124) Error sending stats notification: 'Invalid URL Request (send) https://10.
    90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1767abc
    [2015-02-01 16:42:26 10441] INFO (notificationserver:276) Service stopped.
    [2015-02-01 16:42:26 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:42:29 10441] ERROR (notificationserver:244) Error initializing notification server: 'Invalid URL Request (send) https
    ://10.90.17.43:7002/ovm/core/OVMManagerCoreServlet&c=1&s=-1&lb=p&t=2&p=e02400aa0010ffffffffffffff200008%2Cc58171c45d024e7c9de519aaf1
    767abc'
    [2015-02-01 16:42:45 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:42:59 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:43:05 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:43:25 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:43:32 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:43:45 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:44:02 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:44:05 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:44:25 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:44:32 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:44:46 10448] ERROR (notification:44) Unable to send notification: (111, 'Connection refused')
    [2015-02-01 16:44:53 11242] DEBUG (service:76) call start: discover_server
    [2015-02-01 16:44:54 11242] DEBUG (service:76) call complete: discover_server
    [2015-02-01 16:45:02 10441] DEBUG (notificationserver:237) Trying to connect to manager.
    [2015-02-01 16:45:02 10441] DEBUG (notificationserver:239) Connected to manager.
    [2015-02-01 16:45:03 10441] INFO (notificationserver:267) Service started.
    [2015-02-01 16:47:22 11455] DEBUG (service:76) call start: get_api_version
    [2015-02-01 16:47:22 11455] DEBUG (service:76) call complete: get_api_version
    [2015-02-01 16:47:22 11456] DEBUG (service:76) call start: discover_server
    [2015-02-01 16:47:22 11456] DEBUG (service:76) call complete: discover_server
    [2015-02-01 16:47:22 11470] DEBUG (service:76) call start: discover_hardware
    [2015-02-01 16:47:23 11470] DEBUG (service:76) call complete: discover_hardware
    [2015-02-01 16:47:23 11497] DEBUG (service:76) call start: discover_network
    [2015-02-01 16:47:23 11497] DEBUG (service:76) call complete: discover_network
    [2015-02-01 16:47:24 11498] DEBUG (service:76) call start: discover_storage_plugins
    [2015-02-01 16:47:24 11498] DEBUG (service:76) call complete: discover_storage_plugins
    [2015-02-01 16:47:24 11501] DEBUG (service:74) call start: discover_physical_luns('',)
    [2015-02-01 16:47:25 11501] DEBUG (service:76) call complete: discover_physical_luns
    [2015-02-01 16:47:25 11523] DEBUG (service:74) call start: discover_physical_luns('360080e500036115200000b315294458d 360080e50003611
    5200000b36529447cb 360080e500037683a00000b1652944694 360080e500036115200000b39529448ba 360080e500037683a00000b18529448bf 360080e5000
    36115200000b315294458d 360080e500037683a00000b1a529449ac 360080e500036115200000b36529447cb 360080e500037683a00000b1652944694 360080e
    500036115200000b39529448ba 360080e500037683a00000b18529448bf 360080e500037683a00000b1a529449ac',)
    [2015-02-01 16:47:25 11523] DEBUG (service:76) call complete: discover_physical_luns
    [2015-02-01 16:47:26 11545] DEBUG (service:76) call start: discover_repository_db
    [2015-02-01 16:47:26 11545] DEBUG (service:76) call complete: discover_repository_db
    [2015-02-01 16:47:26 11546] DEBUG (service:74) call start: storage_plugin_listMountPoints('oracle.ocfs2.OCFS2.OCFS2Plugin', {'status
    ': '', 'admin_user': '', 'admin_host': '', 'uuid': '0004fb000009000090ee9ab5a5966c67', 'total_sz': 0, 'admin_passwd': '******', 'fre
    e_sz': 0, 'name': '0004fb000009000090ee9ab5a5966c67', 'access_host': '', 'storage_type': 'FileSys', 'alloc_sz': 0, 'access_grps': []
    , 'used_sz': 0, 'storage_desc': ''})
    [2015-02-01 16:47:26 11546] INFO (storageplugin:109) storage_plugin_listMountPoints(oracle.ocfs2.OCFS2.OCFS2Plugin)
    [2015-02-01 16:47:27 11546] DEBUG (service:76) call complete: storage_plugin_listMountPoints
    [2015-02-01 16:47:27 11573] DEBUG (service:76) call start: get_yum_config
    [2015-02-01 16:47:27 11573] DEBUG (service:76) call complete: get_yum_config
    [2015-02-01 16:47:27 11574] DEBUG (service:76) call start: discover_cluster
    [2015-02-01 16:47:27 11574] DEBUG (service:76) call complete: discover_cluster
    [2015-02-01 16:48:53 11703] DEBUG (service:76) call start: discover_network
    [2015-02-01 16:48:53 11703] DEBUG (service:76) call complete: discover_network
    [2015-02-01 16:48:53 11704] DEBUG (service:74) async call start: start_vm('0004fb00000300001e5b01d4a4cb6426', '0004fb0000060000eff93
    af0676e8c83')
    [2015-02-01 16:48:53 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-eff9-3af0676e8c83 {START
    [2015-02-01 16:48:54 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-eff9-3af0676e8c83 {VNC}
    5900
    [2015-02-01 16:48:54 11706] DEBUG (base:269) async call complete: func: start_vm pid: 11706 status: 0 output:
    [2015-02-01 16:48:54 11706] INFO (notification:47) Notification sent: {ASYNC_PROC} exit PID 11706
    [2015-02-01 16:48:54 10441] INFO (notificationserver:139) Sending notification: {ASYNC_PROC} exit PID 11706
    [2015-02-01 16:48:55 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb0000060000eff93af0676e8c83 {SSLVNC} 6
    900
    [2015-02-01 16:48:55 11958] DEBUG (service:74) call start: configure_vm_ha('0004fb00000300001e5b01d4a4cb6426', '0004fb0000060000eff9
    3af0676e8c83', True)
    [2015-02-01 16:48:56 11958] DEBUG (service:76) call complete: configure_vm_ha
    [2015-02-01 16:48:56 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb0000060000eff93af0676e8c83 {SSLTTY} 7
    900
    [2015-02-01 16:50:01 12075] DEBUG (service:76) call start: discover_network
    [2015-02-01 16:50:01 12075] DEBUG (service:76) call complete: discover_network
    [2015-02-01 16:50:01 12076] DEBUG (service:74) async call start: start_vm('0004fb0000030000ba5b6d02faa88c44', '0004fb0000060000fd7d7
    ad27e9d7b63')
    [2015-02-01 16:50:02 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-fd7d-7ad27e9d7b63 {START
    [2015-02-01 16:50:02 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-fd7d-7ad27e9d7b63 {VNC}
    5901
    [2015-02-01 16:50:02 12078] DEBUG (base:269) async call complete: func: start_vm pid: 12078 status: 0 output:
    [2015-02-01 16:50:02 12078] INFO (notification:47) Notification sent: {ASYNC_PROC} exit PID 12078
    [2015-02-01 16:50:03 10441] INFO (notificationserver:139) Sending notification: {ASYNC_PROC} exit PID 12078
    [2015-02-01 16:50:03 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb0000060000fd7d7ad27e9d7b63 {SSLVNC} 6
    901
    [2015-02-01 16:50:04 12516] DEBUG (service:74) call start: configure_vm_ha('0004fb0000030000ba5b6d02faa88c44', '0004fb0000060000fd7d
    7ad27e9d7b63', True)
    [2015-02-01 16:50:04 12516] DEBUG (service:76) call complete: configure_vm_ha
    [2015-02-01 16:50:04 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb0000060000fd7d7ad27e9d7b63 {SSLTTY} 7
    902
    [2015-02-01 16:50:54 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-fd7d-7ad27e9d7b63 {VMAPI
    } VMAPIEvent {"VMAPIEvent":{"severity":5,"subsystem":"OVMSvcSS","process":"OVMSvc","type":"system","payload":{"type":"alive","alive"
    :{"hostname":"GIS-DB-SVR1","domainName":"gloscc.gov.uk","osType":"Windows","osVersion":"Windows Server 2008 R2 Service Pack 1","kern
    elVersion":"6.1.7601.18700","arch":"AMD64","guestType":"PVHVM","guestDriverVersion":"3.2.2.0","vmapiVersion":"100"}}}}
    [2015-02-01 16:50:54 10441] INFO (notificationserver:139) Sending notification: {DOMAIN} 0004fb00-0006-0000-fd7d-7ad27e9d7b63 {VMAPI
    } VMAPIEvent {"VMAPIEvent":{"severity":5,"subsystem":"OVMSvcSS","process":"OVMSvc","type":"system","payload":{"type":"IPChange","IPC
    hange":{"intrface":"Oracle VM Virtual Ethernet Adapter","mac":"0021f6000001","ipv4info":{"ipinfo":[{"address":"10.90.0.66","netmask"
    :"255.255.255.0","gateway":"","mtu":1500,"speed":1000000000}]},"ipv6info":{"ipinfo":[{"address":"fe80::993f:d5f4:599d:fa4%14","netma
    sk":"255.255.255.0","gateway":"","mtu":1500,"speed":1000000000}]}}}}}

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