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server (DNS, Port, and TFTP Service)

 

Syntax

Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced for port helpers in Junos OS Release 17.2R1 for EX4300 switches.

Support for multiple server instances for a given port introduced in Junos OS Release 17.2 for MX Series routers.

Support for multiple server instances for a given port introduced in Junos OS Release 17.3R1 for EX9200 switches.

Description

Specify the DNS or TFTP server for forwarding DNS or TFTP requests, or specify a destination server address for forwarding LAN broadcast packets as unicast traffic for a custom-configured UDP port.

When configuring port helpers, in releases prior to Junos OS Release 17.2, only one server can be specified for a given port. For Junos OS Release 17.2 and later, multiple servers can be specified for a given port at the global or interface-specific level. When multiple servers are specified, the same packet, with the originator IP address and port requests, is forwarded to the different configured servers; the payload of the UDP packet is not modified.

Options

address—IP address of the server.

logical-system logical-system-name—(Optional) Logical system name of the server.

routing-instance [ routing-instance-names ]—(Optional) Set the routing instance name or names that belong to the DNS server or TFTP server.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.