server-id-override
Syntax
server-id-override;
Hierarchy Level
[edit forwarding-options dhcp-relay relay-option-82], [edit forwarding-options dhcp-relay group group-name relay-option-82], [edit logical-systems logical-system-name forwarding-options dhcp-relay relay-option-82], [edit logical-systems logical-system-name forwarding-options dhcp-relay group group-name relay-option-82], [edit logical-systems logical-system-name routing-instances routing-instance-name forwarding-options dhcp-relay relay-option-82], [edit logical-systems logical-system-name routing-instances routing-instance-name forwarding-options dhcp-relay group group-name relay-option-82], [edit routing-instances routing-instance-name forwarding-options dhcp-relay relay-option-82], [edit routing-instances routing-instance-name forwarding-options dhcp-relay group group-name relay-option-82]
Description
Add the suboptions link-selection and server-id override to option-82 information for DHCP packets
relayed to the server.
In network configurations where a firewall on the broadband
network gateway (BNG) is between the DHCPv4 relay agent and the DHCP
server, only the BNG loopback address passes through the BNG firewall.
In that case, DHCP unicast packets do not pass through the firewall
and and discarded. To enable DHCP unicast packets to pass through
the BNG firewall, use the relay-source configuration statement
to configure the DHCP relay agent to use the loopback address as the
source address in IP headers and DHCP messages. In this case, this
configuration statement adds the link-selection suboption
to provide the DHCP server information to locate the correct address
pool for the DHCP client and adds the server-id override suboption to set the server ID option.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Release 16.1.