relay information policy (BNG)
To configure how the Dynamic Host Configuration Protocol (DHCP) IPv4 relay processes BOOTREQUEST
packets that already contain a relay information option, use the relay information policy command in DHCP
IPv4 relay profile configuration submode. To restore the default relay information policy, use the no form of
this command.
relay information policy {drop| keep| encapsulate}
no relay information policy {drop| keep| encapsulate}
Syntax Description
Directs the DHCP IPv4 Relay to discard BOOTREQUEST packets with the existing
relay information option.
drop
Directs the DHCP IPv4 Relay not to discard a BOOTREQUEST packet that is received
with an existing relay information option and to keep the existing relay information
option value.
keep
Encapsulates the DHCP relay agent information option received from a prior relay
agent in forwarded BOOTREQUEST messages.
encapsulate
Command Default
The DHCP IPv4 Relay does not discard a BOOTREQUEST packet that has an existing relay information
option. The option and the existing relay information option value is replaced.
Command Modes
DHCP IPv4 relay profile configuration
Command History
ModificationRelease
This command was introduced.Release 3.7.2
This command was supported for BNG.Release 4.2.0
The encapsulate keyword was added.Release 4.3.1
Usage Guidelines
The encapsulate keyword allows the second relay agent to encapsulate option 82 information in a message
received from the first relay agent, if it is also configured to add its own option 82 information. This
configuration allows the DHCP server to use option 82 information from both relay agents.
Task ID
OperationsTask ID
read, writeip-services
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Command Reference, Release
5.2.x
191
BNG DHCP Commands
relay information policy (BNG)
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