Can't find anything related to negotiation in the output though
show interfaces et-0/0/31 media
Physical interface: et-0/0/31, Enabled, Physical link is Up
Interface index: 679, SNMP ifIndex: 555
Link-level type: Ethernet, MTU: 9216, LAN-PHY mode, Speed: 25Gbps,
BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None,
MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
Flow control: Disabled, Media type: Fiber
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x4000
Link flags : None
CoS queues : 10 supported, 10 maximum usable queues
Current address: 84:03:28:2e:8d:23, Hardware address: 84:03:28:2e:8d:23
Last flapped : 2021-07-31 16:20:30 SGT (22:55:02 ago)
Input rate : 4783072 bps (708 pps)
Output rate : 14447064 bps (827 pps)
Active alarms : None
Active defects : None
PCS statistics Seconds
Bit errors 0
Errored blocks 0
Ethernet FEC Mode : FEC74
Ethernet FEC statistics Errors
FEC Corrected Errors 0
FEC Uncorrected Errors 0
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
MAC statistics:
Input bytes: 36310827560, Input packets: 17887797,
Output bytes: 54802385162, Output packets: 19675913
PRBS Statistics : Disabled
Interface transmit statistics: Disabled
Original Message:
Sent: 07-29-2021 09:29
From: Unknown User
Subject: QFX5120-48Y 25G transceivers auto-negotiation
to see what auto-neg the switch knows about try .. I have no QFX with 10/25/50/100 so ymmv.
show interfaces et-0/0/x media
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: None, Flow control tx: None, Flow control rx: None, Remote fault: Link OK
Original Message:
Sent: 07-29-2021 08:46
From: Unknown User
Subject: QFX5120-48Y 25G transceivers auto-negotiation
Hi all
Been searching through documentations but can't find the right answer
https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switches-interface-gigabit.html#d565e910
Does anyone has idea if
- Is speed / duplex setting supported on 25G transceiver in QFX5120-48Y ?
- Without any auto-negotiation configuration - is auto-negotiate enabled / disabled on 25G interface ?
- How do we verify that ? show interface et-0/0/x extensive does not show any auto-negotiate settings
Thank you