Maintaining the MX2020 Ethernet Switch
Purpose
For optimum router performance, verify the status of the Gigabit Ethernet ports connected to MPC devices.
Action
On a regular basis:
Check the LEDs on MPC faceplates. The meaning of the LED states differs for various MICs. For more information, see the MX Series Interface Module Reference.
Issue the CLI
show chassis ethernet-switchcommand:user@host> show chassis ethernet-switch Displaying summary for switch 0 Link is down on GE port 0 connected to device: FPC0 Link is down on GE port 1 connected to device: FPC1 Link is down on GE port 2 connected to device: FPC3 Link is down on GE port 3 connected to device: FPC2 Link is down on GE port 4 connected to device: FPC5 Link is good on GE port 5 connected to device: FPC4 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on GE port 6 connected to device: FPC6 Link is good on GE port 7 connected to device: FPC7 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is good on GE port 8 connected to device: FPC8 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on GE port 9 connected to device: FPC9 Link is down on GE port 10 connected to device: FPC10 Link is good on GE port 11 connected to device: FPC11 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on GE port 12 connected to device: FPC13 Link is down on GE port 13 connected to device: FPC12 Link is down on GE port 14 connected to device: FPC14 Link is down on GE port 15 connected to device: FPC15 Link is down on GE port 16 connected to device: FPC17 Link is good on GE port 17 connected to device: FPC16 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is good on GE port 18 connected to device: FPC18 Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on GE port 19 connected to device: FPC19 Link is good on GE port 20 connected to device: Other RE-GigE Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is good on GE port 21 connected to device: RE-GigE Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on GE port 22 connected to device: Debug-GigE Link is good on GE port 23 connected to device: SPMB Speed is 1000Mb Duplex is full Autonegotiate is Enabled Flow Control TX is Disabled Flow Control RX is Disabled Link is down on XE port 24 connected to device: SFP+ 0 Link is down on XE port 25 connected to device: SFP+ 1 Link is down on XE port 26 connected to device: RE-10GigE Link is down on XE port 27 connected to device: Other RE-10GigE
For further description of the output from the command, see the Junos OS System Basics and Services Command Reference.