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FAQ-What Options Are Supported on the NE40E&80E that Functions as the DHCP Server

Publication Date:  2012-07-27 Views:  3 Downloads:  0

Issue Description

What options are supported on the NE40E&80E that functions as the DHCP server?
NE40E&80E V300R003 is adopted. 


Alarm Information



Handling Process

The Option field in a DHCP packet is used to carry control information and parameters that are not defined in certain protocols. If the DHCP server is configured with options, when a DHCP client applies for an IP address, the client can obtain the configuration information in the Option field of the DHCP response packet responded by the server. The value of the DHCP option ranges from 0 to 255. In V300R003, 14 options of the DHCP server are realized. They are Option 1, 51, 50, 52, 53, 54, 57, 58, 59, 6, 15, 3, 44, and 46. In addition, Option 82 of the DHCP relay is realized as specified in RFC 2132.
Option Code--Name1 Subnet Mask
3 Router Option
6 DNS Option
15 Domain Option
44 NetBIOS over TCP/IP Name Server Option
46 NetBIOS over TCP/IP Node Type Option
50 Requested IP Address
51 IP Address Lease Time
52 Option Overload
53 DHCP Message Type
54 Server Identifier
57 Maximum DHCP Message Size
58 Renewal (T1) Time Value
59 Rebinding (T2) Time Value 


Root Cause