Hi,
I could be wrong, but I believe the closest match is "Last flapped" using "show interfaces xx-x/x/x media". I hope this helps.
root@USECL1EX4200-1> show interfaces ge-0/0/0 media
Physical interface: ge-0/0/0, Enabled, Physical link is Up
Interface index: 130, SNMP ifIndex: 504
Description: Link to USECL1SRX1400-1 ge-0/0/1
Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto,
BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled,
Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled,
Remote fault: Online
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Current address: 00:26:88:6d:14:80, Hardware address: 00:26:88:6d:14:80
Last flapped : 2011-06-17 01:02:21 EDT (1d 02:03 ago)
Input rate : 0 bps (0 pps)
Output rate : 504 bps (0 pps)
Active alarms : None
Active defects : None
MAC statistics:
Input bytes: 404856, Input packets: 4809, Output bytes: 7691209,
Output packets: 109912
Autonegotiation information:
Negotiation status: Complete
Link partner:
Link mode: Full-duplex, Flow control: Symmetric/Asymmetric,
Remote fault: OK, Link partner Speed: 1000 Mbps
Local resolution:
Flow control: Symmetric, Remote fault: Link OK
{master:0}
root@USECL1EX4200-1>