Dhcp Relay Specifications; Dhcp Relay Defaults - Alcatel OmniSwitch 6624 Network Configuration Manual

DHCP Relay Specifications

DHCP Relay Specifications
The following table lists specifications for the DHCP Relay.
RFCs Supported
DHCP Relay Implementation
DHCP Relay Service
UDP Port Numbers
IP address allocation
mechanisms
IP addresses supported for each
Relay Service.
IP addresses supported for the
Per-VLAN service

DHCP Relay Defaults

The following table describes the default values of the DHCP Relay parameters.
Parameter Description
Forward delay time value for DHCP Relay
Maximum number of hops
Packet forwarding option
Automatic switch IP configuration for
default VLAN 1.
Automatic switch IP configuration packet
type (BootP or DHCP)
page 15-2
0951–Bootstrap Protocol
1534–Interoperation Between DHCP and BOOTP
1541–Dynamic Host Configuration Protocol
1542–Clarifications and Extensions for the Bootstrap Protocol
2132–DHCP Options and BOOTP Vendor Extensions
Global DHCP
Per-VLAN DHCP
AVLAN DHCP
BOOTP/DHCP (Bootstrap Protocol/Dynamic Host Configuration
Protocol)
67 for Request
68 for Response
Automatic–DHCP assigns a permanent IP address to a host.
Dynamic–DHCP assigns an IP address to a host for a limited period of
time (or until the host explicitly relinquishes the address).
Manual–The network administrator assigns a host's IP address and the
DHCP conveys the address assigned by the host.
Maximum of 256 IP addresses for each Relay Service.
Maximum of 8 IP addresses for each VLAN relay service.
Maximum of 256 VLAN relay services.
Command
ip helper forward delay
ip helper maximum hops
ip helper standard
ip helper avlan only
ip helper per-vlan only
ip helper boot-up
ip helper boot-up enable
OmniSwitch 6624/6648 Network Configuration Guide
Configuring DHCP Relay
Default Value/Comments
3 seconds
4 hops
Standard
Disabled
BootP
April 2004