Cisco ASR 9000 Series Command Reference

helper-address (BNG)
To configure the Dynamic Host Configuration Protocol (DHCP) IPv4 or IPv6 relay agent to relay DHCP
packets to a specific DHCP server, use the helper-address command in an appropriate configuration mode.
Use the no form of this command to clear the address.
helper-address [vrf vrf-name ] [address] [giaddr gateway-address]
no helper-address [vrf vrf-name ] [address] [giaddr gateway-address]
Syntax Description
(Optional) Specifies the name of a particular VRF.
vrf-name
IPv4 and Pv6 address in four part, dotted decimal format.
address
(Optional) Specifies the gateway address to use in packets relayed to server.
This keyword is applicable for IPv4 helper address.
giaddr gateway-address
Command Default
Helper address is not configured.
Command Modes
DHCP IPv6 proxy profile class configuration
DHCP IPv6 profile relay configuration
Command History
ModificationRelease
This command was introduced.Release 3.7.2
This command was supported for BNG.Release 4.2.0
The support for IPv6 was added in BNG.Release 4.3.0
This command is supported in DHCPv6 profile relay configuration
submode.
Release 5.2.2
Usage Guidelines
A maximum of upto eight helper addresses can be configured.
Task ID
OperationsTask ID
read, writeip-services
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Command Reference, Release
5.2.x
159
BNG DHCP Commands
helper-address (BNG)

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model