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XSR CLI Reference Guide 15-107
53 DHCP
Message
Type
- - Conveys the type of DHCP message. The default is 1 (DHCPDISCOVER).
1=DHCPDISCOVER
2=DHCPOFFER
3=DHCPREQUEST
4=DHCPDECLINE
5=DHCPACK
6=DHCPNAK
7=DHCPRELEASE
8=DHCPINFORM
Length: 1 octet
54 Server
Identifier
IP address - Used in DHCPOFFER and DHCPREQUEST messages, and may optionally
be included in the DHCPACK and DHCPNAK messages. DHCP servers
include this option in the DHCPOFFER to allow the client to distinguish
between lease offers. DHCP clients use the contents of the server identifier
field as the destination address for any DHCP messages unicast to the DHCP
server. DHCP clients also indicate which of several lease offers is being
accepted by including this option in a DHCPREQUEST message. The
identifier is the IP address of the selected server.
Length: 4 octets
55 Parameter
Request
List
Hex integer - Used by a DHCP server to request values for specified configuration
parameters. The list of requested values is specified as n octets, where each
octet is a valid DHCP option code. The client can list the options in order of
preference. The DHCP server is not required to return the options in the
requested order, but must try to insert the requested options in the order
requested by the client.
Length: 1-octet minimum
56 Message String - Used by a DHCP server to print an error message to a DHCP client in a
DHCPNAK message in the event of a failure. A client may use this option in a
DHCPDECLINE message to indicate why the client declined the offered
values. The message consists of n octets of NVT ASCII text, which the client
may display on an available output device.
Length: 1-octet minimum
57 Maximum
DHCP
Message
Size
16-bit hex
integer
- Maximum length DHCP message that a client is willing to accept. Length is
specified as an unsigned 16-bit integer. A client may use the maximum DHCP
message size option in DHCPDISCOVER or DHCPREQUEST messages, but
should not use the option in DHCPDECLINE messages.
Length: 2 octets
Value: 576 minimum
58 Renewing
(T1) Time
Value
Lease Data,
MS DHCP
Client/32-bit
hex integer
- Time interval from address assignment until a client transitions to the
RENEWING state.
Length: 4 octets
Value: seconds, as a 32-bit unsigned integer
59 Rebinding
(T2) Time
Value
Lease Data,
MS DHCP
Client/32-bit
hex integer
- Interval from address assignment until a client transitions to the REBINDING
state.
Length: 4 octets
Value: seconds, as a 32-bit unsigned integer
Table 15-1 XSR-Supported DHCP Options (continued)
#
Protocol
Name
Category/
Type
Default Description