Alcatel-Lucent 6850-48 参考指南

DHCP Relay Commands

OmniSwitch CLI Reference Guide

page 36-49

Specifies a VLAN on which traffic destined for a UDP port is forwarded. 

ip udp relay {BOOTP | NBDD | NBNSNBDD | DNS | TACACS | TFTP | NTP | port} vlan vlan_id

no ip udp relay {BOOTP | NBDD | NBNSNBDD | DNS | TACACS | TFTP | NTP | port} vlan vlan_id

BOOTP/DHCP well-known ports 67/68.

NBDD well-known port 138.

NBNS/NBDD well-known ports 137/138.

DNS well-known port 53.

TACACS well-known port 65.

TFTP well-known port 69.

NTP well-known port 123.

A user-specified port that is not a well-known port.

A numeric value (1–4094) that uniquely identifies an individual VLAN. 
Use a hyphen to specify a range of VLANs (e.g., 1-5).

N/A

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Use the no form of this command to remove the VLAN association with the UDP service port.

• The maximum number of VLANs that can receive forwarded UDP service port traffic is 256.

• Only specify service port numbers that are not well known when using the port parameter with this 

command. For example, do not specify port 53 as it is the well-known port number for the DNS UDP 
service. Instead, use the DNS parameter to enable relay for port 53.

• Specifying a VLAN for the BOOTP/DHCP service is not supported.

-> ip udp relay DNS vlan 10

-> ip udp 3047 vlan 500

-> no ip udp relay DNS vlan 10