Operation Manual

Port Commands

5 – 59

Usage

It is recommended that you do not configure the mode of an MX port so that one side of the

link is set to autonegotiation while the other side is set to full-duplex. Although MSS allows this

configuration, it can result in slow throughput on the link. The slow throughput occurs because

the side that is configured for autonegotiation falls back to half-duplex. A stream of large packets

sent to an MX port in such a configuration can cause forwarding on the link to stop.

Do not set the port speed of a gigabit port to auto. Although the CLI allows this setting, it is

invalid. If you set the port speed of a gigabit port to auto, the link will stop working.

Examples

The following command sets the port speed on ports 1, 7 through 11, and 14 to 10 Mbps

and sets the operating mode to full-duplex:

MX# set port speed 1,7-11,14 10

set port trap

Enables or disables Simple Network Management Protocol (SNMP) linkup and linkdown traps on

an individual port.

Syntax

set port trap port-list {enable | disable}

Defaults

SNMP linkup and linkdown traps are disabled by default.

Access

Enabled.

History

Introduced in MSS Version 1.1.

Usage

The set port trap command overrides the global setting of the set snmp trap command.

The set port type command does not affect the global trap information displayed by the show

snmp configuration command. For example, if you globally enable linkup and linkdown traps

but then disable the traps on a single port, the show snmp configuration command still

indicates that the traps are globally enabled.

Examples

The following command enables SNMP linkup and linkdown traps on ports 17 and 18:

MX# set port trap 17-18 enable