H3C Technologies H3C S3100 Series Switches - Manual (Page 357)

Operation Manual – DLDP
H3C S3100-52P Ethernet Switch Chapter 1 DHCP Overview
1-4
z
flags: The first bit is the broadcast response flag bit. It is used to identify that the
DHCP response packet is sent in the unicast or broadcast mode. Other bits are
reserved.
z
ciaddr: IP address of a DHCP client.
z
yiaddr: IP address that the DHCP server assigns to a client.
z
siaddr: IP address of the DHCP server.
z
giaddr: IP address of the first DHCP relay that the DHCP client passes after it sent
the request packet.
z
chaddr: Hardware address of the DHCP client.
z
sname: Name of the DHCP server.
z
file: Path and name of the boot configuration file that the DHCP server specifies for
the DHCP client.
z
option: Optional variable-length fields, including packet type, valid lease time, IP
address of a DNS server, and IP address of the WINS server.
1.4 Protocol Specification
Protocol specifications related to DHCP include:
z
RFC2131: Dynamic Host Configuration Protocol
z
RFC2132: DHCP Options and BOOTP Vendor Extensions
z
RFC1542: Clarifications and Extensions for the Bootstrap Protocol