This shows up when a DHCP
scope has a blue exclamation mark next to it in the MMC, and when the “MMC
snap-in failed to initialize” when you click on address leases.
·
Try to backup
database, and recover it
·
If that fails,
recreate the DHCP scope using the settings in Restore file (editing the values
first)
C:\Windows\system32>cd\
C:\>netsh dhcp server
export C:\dhcp.txt all
Command completed
successfully.
C:\>netsh dhcp server dump
>dhcpdump.txt
C:\>start .
C:\>cd Windows
C:\Windows>cd System32
C:\Windows\System32>cd dhcp
C:\Windows\System32\dhcp>net
stop dhcpserver
The DHCP Server service is
stopping.
The DHCP Server service was
stopped successfully.
C:\Windows\System32\dhcp>jetpack.exe
dhcp.mdb temp.mdb
C:\Windows\System32\dhcp>net
start dhcpserver
The DHCP Server service is
starting...
The DHCP Server service was
started successfully.
C:\Windows\System32\dhcp>net
stop dhcpserver
The DHCP Server service is
stopping.
The DHCP Server service was
stopped successfully.
C:\Windows\System32\dhcp>esentutl
/p C:\windows\system32\dhcp\dhcp.mdb /t C:\win
dows\system32\dhcp\tmp.mdb
Extensible Storage Engine
Utilities for Microsoft(R) Windows(R)
Version 6.1
Copyright (C) Microsoft
Corporation. All Rights Reserved.
Initiating REPAIR mode...
Database:
C:\windows\system32\dhcp\dhcp.mdb
Temp. Database:
C:\windows\system32\dhcp\tmp.mdb
Checking database integrity.
Scanning Status (%
complete)
0
10 20 30
40 50 60
70 80 90
100
|----|----|----|----|----|----|----|----|----|----|
...................................................
Integrity check successful.
Note:
It is recommended that you immediately
perform a full backup
of this database. If you restore a backup
made before the
repair, the database will be rolled back to
the state
it was in at the time of that backup.
Operation completed
successfully in 5.975 seconds.
C:\Windows\System32\dhcp>net
start dhcpserver
The DHCP Server service is
starting...
The DHCP Server service was
started successfully.
C:\Windows\System32\dhcp>cd\
C:\>cd temp
C:\temp>netsh dhcp server
v4 export 10.1.110.0
To export service V4
configuration of the local server to a file.
Syntax:
export <Filename>
<ScopeList|filter|all>
Parameters:
FileName - File where the configuration will be
stored.
ScopeList - List of subnet IP addresses (separated
by spaces)
of all the scopes that
need to be exported.
If only filter records
need to be exported, the
string
"filter" can be specified. If all the
scopes and filter
records need to be exported,
the string
"all" can be specified.
Notes: This command works only on the local
server.
The command takes a long time to
execute if the
service has a large number of
scopes or large number of
clients, etc. The DHCP server
service is stopped, when this
command is running.
Example: export c:\temp\dhcpdb all
This command exports the full
service configuration to
the file c:\temp\dhcpdb.
export c:\temp\dhcpdb 10.0.0.0
20.0.0.0
This command exports the
configuration pertaining to
scopes 10.0.0.0 and 20.0.0.0 to
the file c:\temp\dhcpdb.
export c:\temp\dhcpdb filter
This command exports the configuration
pertaining to
filters to file c:\temp\dhcpdb.
Error 87 in FormatMessageW()
Parameter(s) passed are either
incomplete or invalid.
C:\temp>netsh dhcp server
v4 export C:\temp 10.1.110.0
Access is denied.
C:\temp>netsh exec
restorefile.txt
Command completed
successfully.
Changed the current scope
context to 10.1.110.0 scope.
Command completed
successfully.
Command completed
successfully.
Command completed
successfully.
Command completed successfully.
Command completed
successfully.
Command completed
successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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successfully.
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Command completed successfully.
Command completed
successfully.
C:\temp>
Restorefile.txt - Example
dhcp server \\AD01.contoso.com add scope 10.1.110.0 255.255.255.0 "VLAN110" "Data VLAN"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set state 1
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set delayoffer 0
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add iprange 10.1.110.21 10.1.110.249
dhcp server \\AD01.contoso.com scope 10.1.110.0 set napstate Off
dhcp server \\AD01.contoso.com Scope 10.1.110.0 add excluderange 10.1.110.248 10.1.110.248
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 51 DWORD "86400"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 3 IPADDRESS "10.1.110.1"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 15 STRING "contoso.com"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 6 IPADDRESS "10.1.140.11" "10.2.71.50"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 67 STRING "smsboot\x64\wdsnbp.com"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 242 STRING "MCIPADD=10.1.80.9,10.1.120.2,L2Q=1,L2QVLAN=120"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 176 STRING "MCIPADD=10.1.80.9,10.1.120.2,L2Q=1,L2QVLAN=120"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 set optionvalue 66 STRING "10.1.140.48"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.23 68b59941da86 "NPI41DA86.contoso.com" "HP LaserJet P3015" "DHCP"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.52 008087b447cd "OKI-C9600SS-B447CD.contoso.com" "OKI C9600" "DHCP"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.240 00204ac658ee "tempgaurd.travelleader.com" "tempgaurd.contoso.com" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.205 001eec2e477e "cso-dc5kbase." "Tom DeMeulenaere's laptop" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.239 002319001e6c "SecurityPanel" "SecurityPanel" "DHCP"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.238 00066722b6c9 "UPS1" "UPS1" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.42 00163560c132 "WHQTG0232.contoso.com" "Mark Preuss workstation" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.9 b4b52ff46f1e "NPIF46F1E.contoso.com" "HP LaserJet 600 M601" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.17 2c9efc1baa3d "Canon1BAA3D.contoso.com" "RICOH Aficio MP 9000 PCL 5e" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.19 001e8fd31d1e "CanonD31D1E.contoso.com" "RICOH Aficio MP 4000 PCL 5e" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.5 2c59e575e21c "NPI75E21C.contoso.com" "HP LaserJet 4250 PCL 5e" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.6 2c44fd06fddc "NPI06FDDC.contoso.com" "HP LaserJet M401N" "BOTH"
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Add reservedip 10.1.110.7 0001e63593d6 "NPI3593D6.contoso.com" "HP LaserJet 4100 Legal Dept" "BOTH"
dhcp server \\AD01.contoso.com v4 Scope 10.1.110.0 Set NameProtection enable= 0
dhcp server \\AD01.contoso.com Scope 10.1.110.0 Set DnsConfig 1 1 1 1
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