Host Server
|
Select a
host server from the drop-down list of available host servers.
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Primary DNS
IPv4 Address
|
This field
specifies primary DNS IPv4 address.
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Secondary
DNS IPv4 Address
|
This field
specifies secondary DNS IPv4 address.
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Primary TFTP
Server IPv4 Address (Option 150)
|
You can
enable the IP phones to access the TFTP server using DHCP custom option 150.
This is the method that Cisco recommends.
This field
specifies the IPv4 address for primary Trivial File Transfer Protocol (TFTP)
server.
|
Secondary
TFTP Server IPv4 Address (Option 150)
|
This field
specifies the IPv4 address for secondary TFTP server.
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Bootstrap
Server IPv4 Address
|
This field
specifies the address of the server that is used in the next step of the
bootstrap process. You can use as the IPv4 address of the TFTP server or as the
default value to DHCP server address if the server supplies the next bootstrap
service.
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Domain Name
|
The Domain
Name specifies the domain name that you should use when resolving hostname via
the Domain Name System.
|
TFTP Server
Name (Option 66)
|
You can
enable the IP phones to access the TFTP server by using DHCP option 66.
Use this
field to identify a TFTP server. You can configure only one DNS name or a
dotted decimal IP address in this parameter.
|
ARP Cache
Timeout
|
This field
specifies the timeout in seconds for ARP cache entries. Specify the time as a
32-bit unsigned integer. The default for the Cisco Network Registrar (CNR) DHCP
server specifies 60 seconds.
|
IP Address
Lease Time
|
The DHCP
server uses the information in this field to specify the lease time that it is
willing to offer. Specify the time in units of seconds and as a 32-bit unsigned
integer. The default value for the DHCP server specifies 43200 seconds (12
hours).
|
Renewal(T1)
Time (sec)
|
This field
specifies the time interval from address assignment until the client
transitions to the RENEWING state. Typically, set this field to half the value
of the IP address lease time. For example, if the IP address lease time is
typically set to 60,000 seconds, the renewal time gets set to 30,000 seconds.
|
Rebinding
(T2) Time (sec)
|
This field
specifies the time interval from address assignment until the client
transitions to the REBINDING state. Specify the value in units of seconds and
as a 32-bit unsigned integer. Typically, set this field to approximately 75
percent of the value of the IP address lease time. For example, if the IP
address lease time is set to 60,000 seconds, the rebinding time typically gets
set to about 45,000 seconds. In Windows, 85 percent of the value of the IP
address lease time represents the standard.
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