I was wondering if anyone else was showing the same output when checking interface status. After our most recent upgrade to 15.1R7.8 our interfaces have been showing (Speed: Auto, Duplex: Half-duplex) instead of (Speed: Auto, Duplex: Auto) as in other versions. The Link partner shows connected at Link mode: Full-duplex, Speed: 1000 Mbps. I'm not sure if it's causing problems, but as I look through the statistics I think it is. This port currently has 9591 drops. I just cleared the stats and will monitor. We're showing the same behavior across many other virtual chassis and stand alone chassis. If this is a duplicate forum post my apologies in advance.
> show interfaces ge-0/0/16 media
Physical interface: ge-0/0/16, Enabled, Physical link is Up
Interface index: 340, SNMP ifIndex: 1229
Description:
Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Speed: Auto, Duplex: Half-duplex, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled,
Remote fault: Online, Media type: Copper
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Current address: xx:xx:xx:xx:xx:xx, Hardware address: xx:xx:xx:xx:xx:xx
Last flapped : 2018-07-10 18:01:17 EDT (16:28:43 ago)
Input rate : 512 bps (1 pps)
Output rate : 2096 bps (3 pps)
Active alarms : None
Active defects : None
MAC statistics:
Input bytes: 61117235598, Input packets: 104139384, Output bytes: 44274883406, Output packets: 116256253
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
Interface transmit statistics: Disabled
> show configuration interfaces ge-0/0/16
unit 0 {
family ethernet-switching {
vlan {
members WORKSTATIONS;
}
}
}
Model: ex4200-48t
Junos: 15.1R7.8
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EX-4200 switch port showing Half Duplex
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