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10GbE/100GbE Link Fault Signaling(LFS) syslog indication for various card types

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10GbE LAN-PHY/100GbE supports Link Fault Signaling (LFS) for the purpose of detecting and reporting physical layer fault conditions on transmit and receive ports. 10GbE WAN-PHY uses SONET/SDH LOS and RDI alarms for the same purpose. This article describes how LFS works for each router and FPC card type.

10GbE LAN-PHY/100GbE LFS operates between remote Reconciliation Sublayers (RS) and local RS. Link faults detected between remote RSs and local RSs are received by local RSs. Only the RS originates Remote Fault signals. When this Local Fault status reaches an RS, the RS stops sending MAC data, and continuously generates a Remote Fault status on the transmit data path. When Remote Fault status is received by an RS, the RS stops sending MAC data, and continuously generates Idle control characters. When the RS no longer receives fault status messages, it returns to normal operation, sending MAC data. Junos OS 10GbE LAN-PHY/100GbE interfaces support LFS feature, but it seems that there is remarkable difference on syslog indication of the LFS for various FPC card types.

RS: Reconciliation Sublayer
LOS: Loss of Signal
RDI: Remote Defect Indication

  • MX 10GbE LAN-PHY for both DPC and MPC(MQ based Trio) supports LFS; but local-fault and remote-fault are not logged on syslog.
  • MX/T4000 10GbE LAN-PHY for MPC(XM based Trio) supports LFS and logs its activity on syslog.
  • MX/T4000 100GbE for MPC(XM based Trio) supports LFS and log its activity on syslog.
  • T640/1600 10GbE LAN-PHY for both XENPAK/10GBASE-LR PIC supports LFS and logs its activity on syslog.
  • Finally, MX 10GbE WAN-PHY uses SONET/SDH LOS and RDI alarms for the same purpose, which gets logged on syslog.

No workaround is available. MX MQ based Trio 10GbE LAN-PHY does not log local-fault and remote-fault activity on syslog. We have to set the proper syslog level to see the LF/RF event on syslog.

10GbE LAN-PHY

On MX 10GbE LAN-PHY, both DPC and MPC (MQ based Trio) support LFS. However, they do not log

local-fault and remote-fault on syslog.

MX240/480/960

  • FPC:DPCE 4x 10GE R
  • PIC:1x 10GE(LAN/WAN)

MX240/480/960

  • FPC:MPC Type 1 3D Q
  • MIC:3D 2x 10GE XFP

MX80

  • FPC:MPC BUILTIN
  • MIC:4x 10GE XFP

Router xe-1/0/0 Rx cable down:

Jun 27 22:11:59 MX mib2d[1585]: %DAEMON-4-SNMP_TRAP_LINK_DOWN: ifIndex 307, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-1/0/0
Jun 27 22:11:59 MX mib2d[1585]: %DAEMON-4-SNMP_TRAP_LINK_DOWN: ifIndex 309, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-1/1/0

Router xe-1/0/0 Rx cable connected:

Jun 27 22:12:16 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 307, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/0/0
Jun 27 22:12:16 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 308, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/0/0.0
Jun 27 22:12:16 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 309, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/1/0
Jun 27 22:12:16 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 1531, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/1/0.0

On MX 10GbE LAN-PHY, MPC (XM based Trio) supports LFS, and logs local-fault and remote-fault on syslog.

MX2020

  • FPC:MPCE Type 3 3D
  • MIC:10X10GE SFPP

Router xe-0/2/1 Rx cable down:

Dec 22 18:12:03.402 MX2020 fpc0 XMCHIP(0): XXLCE1: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 5 (xe-0/2/1)
Dec 22 18:12:03.407 MX2020 fpc0 XMCHIP(0): XXLCE1: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 6 (xe-0/2/0)
Dec 22 18:12:03.438 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 543, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-0/2/1
Dec 22 18:12:03.438 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 542, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-0/2/0

Router xe-0/2/1 Rx cable connected:

Dec 22 18:12:13.684 MX2020 fpc0 XMCHIP(0): XXLCE1: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 6 (xe-0/2/0)
Dec 22 18:12:13.739 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 542, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/2/0
Dec 22 18:12:13.739 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 1283, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/2/0.0
Dec 22 18:12:14.684 MX2020 fpc0 XMCHIP(0): XXLCE1: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 5 (xe-0/2/1)
Dec 22 18:12:14.749 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 543, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/2/1
Dec 22 18:12:14.749 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 681, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/2/1.0

MX2020

  • FPC: MPC4E 3D 2CGE+8XGE
  • MIC: 4x10GE SFPP

Router xe-9/2/3 Rx cable down:

Dec 22 18:08:18.596 MX2020 fpc9 XMCHIP(1): XXLCE0: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 2 (xe-9/2/2)
Dec 22 18:08:18.596 MX2020 fpc9 XMCHIP(1): XXLCE0: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 3 (xe-9/2/3)
Dec 22 18:08:18.643 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 688, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-9/2/2
Dec 22 18:08:18.643 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 689, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-9/2/3

Router xe-9/2/3 Rx cable connected:

Dec 22 18:08:25.090 MX2020 fpc9 XMCHIP(1): XXLCE0: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 2 (xe-9/2/2)
Dec 22 18:08:25.409 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 688, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-9/2/2
Dec 22 18:08:25.409 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3461, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-9/2/2.0
Dec 22 18:08:26.090 MX2020 fpc9 XMCHIP(1): XXLCE0: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 3 (xe-9/2/3)
Dec 22 18:08:26.419 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 689, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-9/2/3
Dec 22 18:08:26.419 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3462, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-9/2/3.0

Both XENPAK and 10GBASE-LR support LFS; they log local-fault and remote-fault on syslog.

T640/1600

  • FPC: E-FPC Type 3
  • PIC: 1x 10GE(LAN)/XENPAK-LR

Router ge-6/0/0 Rx cable down:

Jun 27 20:11:08 T640 mib2d[1544]: SNMP_TRAP_LINK_DOWN: ifIndex 575, ifAdminStatus up(1), ifOperStatus down(2), ifName ge-6/0/0
Jun 27 20:11:08 T640 mib2d[1544]: SNMP_TRAP_LINK_DOWN: ifIndex 602, ifAdminStatus up(1), ifOperStatus down(2), ifName ge-2/0/0
Jun 27 20:11:08 T640 fpc6 .pm3393.6.0. RXOAM: Local Fault received 
Jun 27 20:11:09 T640 fpc2 .pm3393.2.0. RXOAM: Remote Fault received 
Jun 27 20:11:28 T640 fpc6 XGE(6/0): receive optical power low warning set

Router ge-6/0/0 Rx cable connected

Jun 27 20:11:35 T640 fpc6 .pm3393.6.0. RXOAM: Local Fault cleared 
Jun 27 20:11:36 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 575, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-6/0/0
Jun 27 20:11:36 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 604, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-6/0/0.0
Jun 27 20:11:36 T640 fpc2 .pm3393.2.0. RXOAM: Remote Fault cleared 
Jun 27 20:11:36 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 602, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-2/0/0
Jun 27 20:11:36 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 603, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-2/0/0.0
Jun 27 20:11:58 T640 fpc6 XGE(6/0): receive optical power low warning cleared

T640/1600

  • FPC:E-FPC Type 3
  • PIC:1x 10GE(LAN),10GBASE-LR

Router ge-6/1/0 Rx cable down:

Jun 27 20:14:45 T640 fpc6 .pm3392.6.1. R64B66B: Loss of signal from the optics set 
Jun 27 20:14:45 T640 fpc6 .pm3392.6.1. R64B66B: Out of sync set 
Jun 27 20:14:45 T640 fpc6 .pm3392.6.1. R64B66B: Link failed due to either Loss of Sync or a Local Fault status 
Jun 27 20:14:46 T640 mib2d[1544]: SNMP_TRAP_LINK_DOWN: ifIndex 600, ifAdminStatus up(1), ifOperStatus down(2), ifName ge-6/1/0
Jun 27 20:14:46 T640 fpc6 .pm3392.6.1. T64B66B: Get external LOS event, sending RF msg 
Jun 27 20:14:46 T640 fpc2 .pm3392.2.1. R64B66B: Received at least 3 Remote Fault messages 
Jun 27 20:14:46 T640 mib2d[1544]: SNMP_TRAP_LINK_DOWN: ifIndex 566, ifAdminStatus up(1), ifOperStatus down(2), ifName ge-2/1/0

Router ge-6/1/0 Rx cable connected:

Jun 27 20:15:14 T640 fpc2 .pm3392.2.1. R64B66B: Received at least 3 Remote Fault messages cleared 
Jun 27 20:15:14 T640 fpc6 .pm3392.6.1. R64B66B: Loss of signal from the optics cleared 
Jun 27 20:15:14 T640 fpc6 .pm3392.6.1. R64B66B: Out of sync cleared 
Jun 27 20:15:15 T640 fpc6 .pm3392.6.1. R64B66B: Link failed due to either Loss of Sync or a Local Fault status cleared 
Jun 27 20:15:15 T640 fpc6 .pm3392.6.1. T64B66B: No external LOS event, stop RF msg 
Jun 27 20:15:15 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 566, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-2/1/0
Jun 27 20:15:15 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 601, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-2/1/0.0
Jun 27 20:15:16 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 600, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-6/1/0
Jun 27 20:15:16 T640 mib2d[1544]: SNMP_TRAP_LINK_UP: ifIndex 607, ifAdminStatus up(1), ifOperStatus up(1), ifName ge-6/1/0.0

T4000

  • FPC: Type 5-3D
  • PIC: 12x10GE (LAN/WAN) SFPP/24x10GE (LAN/WAN) SFPP

On T4000 10GbE LAN-PHY, MPC (XM based Trio) supports LFS, and logs local-fault and remote-fault on syslog.

Router xe-0/1/1 Rx cable down:

Dec 16 11:05:08.029 T4000 fpc0 XMCHIP(1): XXLCE0: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 10 (xe-0/1/0)
Dec 16 11:05:08.029 T4000 fpc0 T5E(0/1) link 00 down,local_fault:no, remote_fault:yes,asic_fault: 0
Dec 16 11:05:08.029 T4000 fpc0 XMCHIP(1): XXLCE0: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 11 (xe-0/1/1)
Dec 16 11:05:08.077 T4000 mib2d[1814]: SNMP_TRAP_LINK_DOWN: ifIndex 549, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-0/1/0
Dec 16 11:05:08.077 T4000 mib2d[1814]: SNMP_TRAP_LINK_DOWN: ifIndex 550, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-0/1/1
Dec 16 11:05:08.148 T4000 fpc0 T5E(0/1) link 01 down,local_fault:yes, remote_fault:no,asic_fault: 0
Dec 16 11:05:08.591 T4000 fpc0 los_occured T5E(0/1) for link (1)

Router xe-0/1/1 Rx cable connected:

Dec 16 11:05:18.592 T4000 fpc0 T5E(0/1) link 01 up,local_fault:no, remote_fault:no
Dec 16 11:05:18.592 T4000 fpc0 XMCHIP(1): XXLCE0: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 11 (xe-0/1/1)
Dec 16 11:05:18.983 T4000 mib2d[1814]: SNMP_TRAP_LINK_UP: ifIndex 550, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/1/1
Dec 16 11:05:18.983 T4000 mib2d[1814]: SNMP_TRAP_LINK_UP: ifIndex 609, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/1/1.0
Dec 16 11:05:19.592 T4000 fpc0 T5E(0/1) link 00 up,local_fault:no, remote_fault:no
Dec 16 11:05:19.592 T4000 fpc0 XMCHIP(1): XXLCE0: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 10 (xe-0/1/0)
Dec 16 11:05:19.893 T4000 mib2d[1814]: SNMP_TRAP_LINK_UP: ifIndex 549, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/1/0
Dec 16 11:05:19.893 T4000 mib2d[1814]: SNMP_TRAP_LINK_UP: ifIndex 608, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/1/0.0

10GbE WAN-PHY

Both DPC and MPC use SONET/SDH LOS/RDI alarms; they log messages on syslog.

MX240/480/960

  • FPC: DPCE 4x 10GE R
  • PIC: 1x 10GE(LAN/WAN)

MX240/480/960

  • FPC: MPC Type 1 3D Q
  • MIC: 3D 2x 10GE XFP

MX80

  • FPC:MPC BUILTIN
  • MIC:4x 10GE XFP

Router xe-1/2/0 Rx cable down:

Jun 27 22:17:36.931 MX mib2d[1585]: %DAEMON-4-SNMP_TRAP_LINK_DOWN: ifIndex 1532, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-1/2/0
Jun 27 22:17:36.933 MX mib2d[1585]: %DAEMON-4-SNMP_TRAP_LINK_DOWN: ifIndex 1533, ifAdminStatus up(1), ifOperStatus down(2), ifName xe-1/3/0
Jun 27 22:17:40.389 MX /kernel: %KERN-4: xe-1/2/0 link 0: Asserting SONET alarm(s) LOS 
Jun 27 22:17:40.389 MX /kernel: %KERN-4: xe-1/3/0 link 0: Asserting SONET alarm(s) RDI-L

Router xe-1/2/0 Rx cable connected:

Jun 27 22:17:54.334 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 1532, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/2/0
Jun 27 22:17:54.334 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 1534, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/2/0.0
Jun 27 22:17:54.335 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 1533, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/3/0
Jun 27 22:17:54.335 MX mib2d[1585]: %DAEMON-6-SNMP_TRAP_LINK_UP: ifIndex 1535, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-1/3/0.0
Jun 27 22:18:02.385 MX /kernel: %KERN-4: xe-1/2/0 link 0: Clearing SONET alarm(s) LOS 
Jun 27 22:18:03.384 MX /kernel: %KERN-4: xe-1/3/0 link 0: Clearing SONET alarm(s) RDI-L

100GbE

On MX 100GbE, MPC (XM based Trio) supports LFS, and logs local-fault and remote-fault on syslog.

MX2020

  • FPC: MPCE Type 3 3D
  • MIC: 1X100GE CFP

Router et-1/0/0 Rx cable down:

Dec 22 18:26:18.959 MX2020 fpc1 XMCHIP(0): XXLCE0: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 0 (et-1/0/0)
Dec 22 18:26:18.960 MX2020 fpc1 XMCHIP(0): XXLCE1: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 0 (et-1/2/0)
Dec 22 18:26:18.994 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 3470, ifAdminStatus up(1), ifOperStatus down(2), ifName et-1/0/0
Dec 22 18:26:18.994 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 3473, ifAdminStatus up(1), ifOperStatus down(2), ifName et-1/2/0

Router et-1/0/0 Rx cable connected:

Dec 22 18:26:28.000 MX2020 fpc1 XMCHIP(0): XXLCE0: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 0 (et-1/0/0)
Dec 22 18:26:28.152 MX2020 fpc1 XMCHIP(0): XXLCE1: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 0 (et-1/2/0)
Dec 22 18:26:28.285 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3470, ifAdminStatus up(1), ifOperStatus up(1), ifName et-1/0/0
Dec 22 18:26:28.285 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3474, ifAdminStatus up(1), ifOperStatus up(1), ifName et-1/0/0.0
Dec 22 18:26:28.285 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3473, ifAdminStatus up(1), ifOperStatus up(1), ifName et-1/2/0
Dec 22 18:26:28.285 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3475, ifAdminStatus up(1), ifOperStatus up(1), ifName et-1/2/0.0

MX2020

  • FPC: MPC4E 3D 2CGE+8XGE
  • MIC: 1X100GE CFP

Router et-9/1/0 Rx cable down:

Dec 22 18:38:56.898 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 684, ifAdminStatus up(1), ifOperStatus down(2), ifName et-9/1/0
Dec 22 18:38:56.898 MX2020 mib2d[1869]: SNMP_TRAP_LINK_DOWN: ifIndex 693, ifAdminStatus up(1), ifOperStatus down(2), ifName et-9/3/0
Dec 22 18:38:56.924 MX2020 fpc9 XMCHIP(0): XXLCE1: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 0 (et-9/1/0)
Dec 22 18:38:56.925 MX2020 fpc9 XMCHIP(1): XXLCE1: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 0 (et-9/3/0)

Router et-9/1/0 Rx cable connected:

Dec 22 18:39:07.111 MX2020 fpc9 XMCHIP(0): XXLCE1: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 0 (et-9/1/0)
Dec 22 18:39:07.263 MX2020 fpc9 XMCHIP(1): XXLCE1: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 0 (et-9/3/0)
Dec 22 18:39:07.602 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 684, ifAdminStatus up(1), ifOperStatus up(1), ifName et-9/1/0
Dec 22 18:39:07.602 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3467, ifAdminStatus up(1), ifOperStatus up(1), ifName et-9/1/0.0
Dec 22 18:39:07.602 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 693, ifAdminStatus up(1), ifOperStatus up(1), ifName et-9/3/0
Dec 22 18:39:07.602 MX2020 mib2d[1869]: SNMP_TRAP_LINK_UP: ifIndex 3468, ifAdminStatus up(1), ifOperStatus up(1), ifName et-9/3/0.0

On T4000 100GbE, MPC (XM based Trio) supports LFS, and logs local-fault and remote-fault on syslog.

T4000

  • FPC: Type 5-3D
  • PIC: 1x100GE

Router et-2/0/0 Rx cable down:

Oct 2 14:32:11.833 T4000 fpc2 XMCHIP(0): XXLCE0: Port Alarms: Detected Ethernet MAC Local Fault Delta Event for Port 0 (et-2/0/0)
Oct 2 14:32:11.833 T4000 fpc2 T5E(2/0) link 00 down,local_fault:yes, remote_fault:no
Oct 2 14:32:11.833 T4000 fpc2 XMCHIP(1): XXLCE0: Port Alarms: Detected Ethernet MAC Remote Fault Delta Event for Port 0 (et-2/1/0)
Oct 2 14:32:11.936 T4000 fpc2 T5E(2/1) link 00 down,local_fault:no, remote_fault:yes
Oct 2 14:32:12.464 T4000 mib2d[1590]: SNMP_TRAP_LINK_DOWN: ifIndex 526, ifAdminStatus up(1), ifOperStatus down(2), ifName et-2/0/0
Oct 2 14:32:12.464 T4000 mib2d[1590]: SNMP_TRAP_LINK_DOWN: ifIndex 507, ifAdminStatus up(1), ifOperStatus down(2), ifName et-2/1/0

Router et-2/0/0 Rx cable connected:

Oct 2 14:32:24.082 T4000 fpc2 T5E(2/0) link 00 up,local_fault:no, remote_fault:no
Oct 2 14:32:24.127 T4000 fpc2 XMCHIP(0): XXLCE0: Port Alarms: Cleared Ethernet MAC Local Fault Delta Event for Port 0 (et-2/0/0)
Oct 2 14:32:24.212 T4000 mib2d[1590]: SNMP_TRAP_LINK_UP: ifIndex 526, ifAdminStatus up(1), ifOperStatus up(1), ifName et-2/0/0
Oct 2 14:32:24.212 T4000 mib2d[1590]: SNMP_TRAP_LINK_UP: ifIndex 794, ifAdminStatus up(1), ifOperStatus up(1), ifName et-2/0/0.0 
Oct 2 14:32:24.254 T4000 fpc2 T5E(2/1) link 00 up,local_fault:no, remote_fault:no
Oct 2 14:32:24.342 T4000 fpc2 XMCHIP(1): XXLCE0: Port Alarms: Cleared Ethernet MAC Remote Fault Delta Event for Port 0 (et-2/1/0)
Oct 2 14:32:24.427 T4000 mib2d[1590]: SNMP_TRAP_LINK_UP: ifIndex 507, ifAdminStatus up(1), ifOperStatus up(1), ifName et-2/1/0
Oct 2 14:32:24.427 T4000 mib2d[1590]: SNMP_TRAP_LINK_UP: ifIndex 525, ifAdminStatus up(1), ifOperStatus up(1), ifName et-2/1/0.0