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DHCP Option
Parameter
Refer to
boot server
Menu
address
3-7
151
Note: This value
SIP server address
is configurable.
SNTP server
42 then 4
address
SNTP GMT offset
2
DNS server IP
6
address
alternate DNS
6
server IP address
DNS domain
15
Refer to
Menu
VLAN ID
3-7
Note
DHCP
DHCP
•
on page
•
•
•
•
•
•
DHCP
Warning: Cisco Discovery Protocol (CDP) overrides Local FLASH
on page
that overrides DHCP VLAN Discovery.
For more information on DHCP options, go to
http://www.ietf.org/rfc/rfc2131.txt?number=2131
http://www.ietf.org/rfc/rfc2132.txt?number=2132.
The configuration file value for SNTP server address and SNTP GMT offset can
be configured to override the DHCP value. Refer to
tcpIpApp.sntp.address.overrideDHCP in
A-51.
The CDP value can be obtained from a connected Ethernet switch if the switch
supports CDP.
In the case where you do not have control of your DHCP server or do not have
the ability to set the DHCP options, an alternate method of automatically
discovering the provisioning server address is required. Connecting to a
secondary DHCP server that responds to DHCP INFORM queries with a
requested boot server value is one possibility. For more information, refer to
http://www.ietf.org/rfc/rfc3361.txt?number=3361
http://www.ietf.org/rfc/rfc3925.txt?number=3925.
Alternate
Configuration File
DHCP
(application only)
•
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-
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-
•
-
•
-
-
-
-
-
-
Time Synchronization <sntp/>
Setting up Your System
Local
FLASH
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•
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•
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or
on page
and
3 - 3
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