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DHCP Relay Specifications
Configuring DHCP Relay
page 15-2
OmniSwitch 6624/6648 Network Configuration Guide
April 2004
DHCP Relay Specifications
The following table lists specifications for the DHCP Relay.
DHCP Relay Defaults
The following table describes the default values of the DHCP Relay parameters.
RFCs Supported
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
DHCP Relay Implementation
Global DHCP
Per-VLAN DHCP
AVLAN DHCP
DHCP Relay Service
BOOTP/DHCP (Bootstrap Protocol/Dynamic Host Configuration
Protocol)
UDP Port Numbers
67 for Request
68 for Response
IP address allocation
mechanisms
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.
IP addresses supported for each
Relay Service.
Maximum of 256 IP addresses for each Relay Service.
IP addresses supported for the
Per-VLAN service
Maximum of 8 IP addresses for each VLAN relay service.
Maximum of 256 VLAN relay services.
Parameter Description
Command
Default Value/Comments
Forward delay time value for DHCP Relay
ip helper forward delay
3 seconds
Maximum number of hops
ip helper maximum hops
4 hops
Packet forwarding option
ip helper standard
ip helper avlan only
ip helper per-vlan only
Standard
Automatic switch IP configuration for
default VLAN 1.
ip helper boot-up
Disabled
Automatic switch IP configuration packet
type (BootP or DHCP)
ip helper boot-up enable
BootP
Содержание OmniSwitch 6624
Страница 1: ...Part No 060179 10 Rev C April 2004 OmniSwitch 6624 6648 Network Configuration Guide www alcatel com...
Страница 22: ...Contents xxii OmniSwitch 6624 6648 Network Configuration Guide April 2004...
Страница 174: ...Verifying 802 1Q Configuration Configuring 802 1Q page 9 12 OmniSwitch 6624 6648 Network Configuration Guide April 2004...
Страница 264: ...Verifying the RIP Configuration Configuring RIP page 13 16 OmniSwitch 6624 6648 Network Configuration Guide April 2004...
Страница 276: ...Verifying the RDP Configuration Configuring RDP page 14 12 OmniSwitch 6624 6648 Network Configuration Guide April 2004...