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play_arrow Ethernet Interfaces
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play_arrow 400ZR and 400G OpenZR+ Optical Transceivers
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- 100GbE, 40GbE, and 10GbE
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- Junos CLI Reference Overview

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English

Features of 400ZR and 400G OpenZR+

date_range 06-Mar-25

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Application Selection

The 400ZR and 400G OpenZR+ optics advertises supported applications for a particular speed. You can select any of the application based on your requirement. You can also switch between these applications.

Use 400ZR and 400G OpenZR+ to confirm platform and release support.

Table 1: Supported Applications of ZR Optics
Application	Host ID	Host Interface Code Description	Media ID	Media Interface Code Description	Channelization
1	17	400GAUI-8 C2M (Annex 120E)	62	400ZR, DWDM, amplified	1x400G CFEC amplified
2	17	400GAUI-8 C2M (Annex 120E)	63	400ZR, single wavelength unamplified	1x400G CFEC unamplified
3	13	100GAUI-2 C2M (Annex 135G)	62	400ZR, DWDM, amplified	4x100G CFEC amplified

Table 2: Supported Applications of 400G OpenZR+ Optics
Application	Host ID	Host Interface Code Description	Media ID	Media Interface Code Description	Channelization
1	17	400GAUI-8 C2M (Annex 120E)	62	400ZR, DWDM, amplified	1x400G CFEC amplified
2	17	400GAUI-8 C2M (Annex 120E)	63	400ZR, Single Wavelength, unamplified	1x400G CFEC unamplified
3	13	100GAUI-2 C2M (Annex 135G)	62	400ZR, DWDM, amplified	4x100G CFEC amplified
4	17	400GAUI-8 C2M (Annex 120E)	70	ZR-400-OFEC-16QAM	1x400G OFEC
5	13	100GAUI-2 C2M (Annex 135G)	70	ZR-400-OFEC-16QAM	4x100G OFEC
6	13	100GAUI-2 C2M (Annex 135G)	71	ZR-300-OFEC-8QAM	3x100G OFEC
7	13	100GAUI-2 C2M (Annex 135G)	72	ZR-200-OFEC-QPSK	2x100G OFEC
8	13	100GAUI-2 C2M (Annex 135G)	73	ZR-100-OFEC-QPSK	1x100G OFEC

Table 3: Default Application for 400ZR and 400G OpenZR+
Optics	Speed	Default Application
400GbE ZR	1x400G	CFEC amplified
400GbE ZR+	1x400G	OFEC

For example:

To switch from 1x400G OFEC to 4x100G CFEC in ZR+

Change the speed from 1x400 Gbps to 4x100 Gbps using the set interface et-<> number-of-sub-ports <> speed <>:
```
set interface et-<> number-of-sub-ports 4 speed 100g
```
The command changes the speed from 1x400 Gbps to 4x100 Gbps.
Switch the application from OFEC to CFEC using the set interfaces <interface> optics-options application hostid <hostid> mediaid <mediaid> [domainid <domainid>] command:
```
set interface et-<>:0 optics-options application mediaid 62 hostid 13
```
The command switches the application to 4x100 Gbps CFEC.

To display the configurable applications

Use the show interfaces diagnostics optics-applications <interface> command to display the configurable applications. For example, 1x400G supports the applications as highlighted in the following output.

content_copy zoom_out_map
router> show interfaces diagnostics optics-applications et-0/0/10
Physical interface: et-0/0/10
Interface Name : et-0/0/10
Current Speed : 1x400G
Ap Sel Host Intf Code Media Intf Code Host Lanes Media Lanes Host Assign Media Assign
1 400GAUI-8 C2M (Annex 120E)(17) 400ZR, DWDM, amplified(62) 8 1 1 1
2 400GAUI-8 C2M (Annex 120E)(17) 400ZR, Single Wavelength,Unamplified(63) 8 1 1 1
3 100GAUI-2 C2M (Annex 135G)(13) 400ZR, DWDM, amplified(62) 2 1 85 1

Configure Application Selection

Execute the following steps to configure the 400ZR or 400G OpenZR+ optics:

In configuration mode, go to the [edit interfaces interface-name] hierarchy level.
```
[edit]
user@host# edit interfaces interface-name
```
Include the speed statement at the [edit interfaces interface-name] hierarchy level to configure the speed.
```
[edit interfaces interface-name]
user@host# set speed (400g | 100g);
```
Configure speed and channelization.
```
[edit interfaces interface-name]
user@host# set number-of-sub-ports <number-of-sub-ports>
```
To configure a different application for a speed, see Step 5.

Display all configurable applications in the configured speed. You can use this information while executing Step 5.

show interfaces diagnostics optics-applications <interface>

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root@user> show interfaces diagnostics optics-applications et-0/0/10
Physical interface: et-0/0/10
Interface Name : et-0/0/10
Current Speed : 1x400G
Ap Sel Host Intf Code Media Intf Code Host Lanes Media Lanes Host Assign Media Assign
1 400GAUI-8 C2M (Annex 120E)(17) 400ZR, DWDM, amplified(62) 8 1 1 1
2 400GAUI-8 C2M (Annex 120E)(17) 400ZR, Single Wavelength,Unamplified(63) 8 1 1 1
3 100GAUI-2 C2M (Annex 135G)(13) 400ZR, DWDM, amplified(62) 2 1 85 1

Change the application.

Change to the [edit interfaces interface-name optics-options] hierarchy.

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[edit edit interfaces interface-name]
user@host# edit interfaces interface-name optics-options

Execute the following command in this hierarchy:

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set interfaces <interface> optics-options application hostid <hostid> mediaid <mediaid> [ domainid <domainid>]

Display the output after you switch to a new application. The following output shows media id and host id as 62 and 17 respectively.

show interfaces et-0/0/10

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Physical interface: et-0/0/10, Enabled, Physical link is Down
Interface index: 1046, SNMP ifIndex: 551
Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Speed: 400Gbps, BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None,
MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Disabled, Media type: Fiber
Wavelength : 1550.12 nm, Frequency: 193.40 THz
Optic-loopback : Disabled Media Code : 400ZR, DWDM, amplified Host Code : 400GAUI-8 C2M (Annex 120E)
Device flags : Present Running Down Transceiver-Rx-Alarm
Interface flags: Hardware-Down SNMP-Traps Internal: 0x80000
CoS queues : 8 supported, 8 maximum usable queues
Current address: 40:de:ad:8c:ca:22, Hardware address: 40:de:ad:8c:ca:22
Last flapped : 2022-12-12 02:53:51 PST (00:01:03 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Active alarms : LINK
Active defects : LINK, LOCAL-FAULT
PCS statistics Seconds
Bit errors 0
Errored blocks 0
Ethernet FEC Mode : FEC119
Ethernet FEC statistics Errors
FEC Corrected Errors 1275
FEC Uncorrected Errors 24
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
Optic FEC Mode : CFEC <----------------------------
Optic FEC statistics:
Corrected Errors 65254593448
Uncorrected Words 0
Corrected Error rate 0
Uncorrected Error rate 0
Corrected Error Ratio ( 56 seconds average) 5.00e-01
PRBS Mode : Disabled
Interface transmit statistics: Disabled
Link Degrade :
Link Monitoring : Disable
Logical interface et-0/0/10.16386 (Index 1041) (SNMP ifIndex 606)
Flags: Up SNMP-Traps Encapsulation: ENET2 DF
Input packets : 0
Output packets: 0
Protocol multiservice, MTU: Unlimited
Flags: None

Target Output Power

You can view the minimum and maximum configurable transmit output power for 400ZR and 400G OpenZR+ optics modules. If you want to configure a transmit output power other than the default power, use the set interfaces et-<> optics-options tx-power <> command.

The minimum and maximum transmit output power varies:

Based on the optical transceivers.
Based on the transceiver vendor.

Use 400ZR and 400G OpenZR+ to confirm platform and release support.

Table 4: Maximum and Minimum Tx Power
Optical Transceiver	JPN	Maximum Tx Power	Minimum Tx Power
QDD-400G-ZR	740-114884	4 dBm	-22 dBm
QDD-400G-ZR-M	740-131169	-10 dBm	-14 dBm
QDD-400G-ZR-M-HP	740-131168	1 dBm	-6 dBm
JCO400-QDD-ZR	740-157132	-10 dBm	-14 dBm
JCO400-QDD-ZR-M	740-157138	-10 dBm	-14 dBm
JCO400-QDD-ZR-M-HP	740-151745	1 dBm	-6 dBm

Changing or adjusting to a different Tx power improves transmission quality. See tx-power.

Table 5: Default Output Power
Transceiver	Default Transmit Power
QDD-400G-ZR	-10 dBm
JCO400-QDD-ZR	-10 dBm
QDD-400G-ZR-M	-10 dBm
JCO400-QDD-ZR-M	-10 dBm
QDD-400G-ZR-M-HP	0 dBm

Configure Target Output Power

Execute the following steps to configure the 400ZR or 400G OpenZR+ optics:

In configuration mode, go to the [edit interfaces interface-name] hierarchy level.
```
[edit ]
user@host# edit interfaces interface-name
```

Configure output power.

content_copy zoom_out_map
user@host# set interface et-<interface> optics-option tx-power <tx power>

Verify the target output power using the following command.

show interfaces diagnostics optics <interface>

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root@user# run show interfaces diagnostics optics et-0/0/10
Physical interface: et-0/0/10
Module temperature : 41 degrees C / 105 degrees F
Module voltage : 3.18 V
Wavelength channel number : 28
Wavelength setpoint : 1550.12 nm
Tx dither : Disabled
Frequency error : 0.00 GHz
Wavelength error : 0.0 nm
TEC fault alarm : False
Wavelength unlocked alarm : False
Tx tune alarm : False
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Module temperature high alarm threshold : 76 degrees C / 168 degrees F
Module temperature low alarm threshold : -6 degrees C / 21 degrees F
Module temperature high warning threshold : 73 degrees C / 163 degrees F
Module temperature low warning threshold : -3 degrees C / 26 degrees F
Module voltage high alarm threshold : 3.63 V
Module voltage low alarm threshold : 3.0 V
Module voltage high warning threshold : 3.599 V
Module voltage low warning threshold : 3.049 V
Laser bias current high alarm threshold : 524.28 mA
Laser bias current low alarm threshold : 0.0 mA
Laser bias current high warning threshold : 524.28 mA
Laser bias current low warning threshold : 0.0 mA
Laser output power high alarm threshold : 0.199 mW / -7.00 dBm
Laser output power low alarm threshold : 0.015 mW / -18.01 dBm
Laser output power high warning threshold : 0.158 mW / -7.99 dBm
Laser output power low warning threshold : 0.019 mW / -16.98 dBm
Laser rx power high alarm threshold : 2.511 mW / 4.00 dBm
Laser rx power low alarm threshold : 0.004 mW / -23.01 dBm
Laser rx power high warning threshold : 1.995 mW / 3.00 dBm
Laser rx power low warning threshold : 0.009 mW / -20.00 dBm
Laser temperature high alarm threshold : 76 degrees C / 168 degrees F
Laser temperature low alarm threshold : -6 degrees C / 21 degrees F
Laser temperature high warning threshold : 73 degrees C / 163 degrees F
Laser temperature low warning threshold : -3 degrees C / 26 degrees F
Lane 0
Laser bias current : 234.8 mA
Laser output power : 0.063 mW / -10.00 dBm ------------------>tx-power

Enhanced Loopback Options

Only the Media Side Output loopback type was available before Junos OS Evolved 23.1 R1.

From Junos OS Evolved 23.1 R1 onwards, the following types of loopbacks are available in addition to Media Side Output:

Media Side Input—Loopback of the transceiver optical input signal back to its input
Host Side Input—Loopback of the data packet signal output at the host side back to its input
Host Side Output—Loopback of the data packet signal input at the host side back to its input

For example:

content_copy zoom_out_map
user@host# set interfaces et-0/0/0 optics-options loopback loopbacktype ?
Possible completions:
  host-side-in         Loop host side input back to output
  host-side-out        Loop host side output back to input
  media-side-in        Loop media side input back to output
  media-side-out       Loop media side output back to input
[edit]

The enhanced command to configure lo0 is set interface et-<> optics-options loopback loopbacktype <loopbacktype>.

For example:

set interface et-<> optics-options loopback loopbacktype host-side-in

set interface et-<> optics-options loopback loopbacktype host-side-out

set interface et-<> optics-options loopback loopbacktype media-side-in

set interface et-<> optics-options loopback loopbacktype media-side-out

Use 400ZR and 400G OpenZR+ to confirm platform and release support. See optics-options.

Tunable Wavelength

The 400ZR and 400G OpenZR+ are DWDM tunable transceivers. You can configure the transceivers with Optical Internetworking Forum (OIF) channels.

Both 400ZR and 400G OpenZR+ optic modules support flex grid channel spacing in increments of 6.25 GHz. The 400ZR and 400G OpenZR+ support 75 GHz/100 GHz frequency spacing. A 75 GHz channel spacing is more suitable for point-to-point links, while a 100 GHz channel spacing is more applicable to ROADM networks.

The show optics diagnostics command displays the tunable parameters like Thermoelectric Cooler (TEC) fault, wavelength unlocked fault status, wavelength/frequency, channel number, and so on.

Use the set interface et-<> optics-options wavelength command to configure wavelength. By default, the wavelength is 1550.12 nm, which corresponds to 193.40 THz. See wavelength.

Signal Power Performance

From 23.4R1 Junos OS Evolved onwards, the show interface diagnostics optics et-<x/x/x> command shows the Rx signal power in the mW/dBm format. This enhancement is applicable to all devices on Junos OS Evolved platforms.

Example:

content_copy zoom_out_map
root@ardbeg-q> show interfaces diagnostics optics et-0/0/0
Physical interface: et-0/0/0
    Module temperature                        :  55 degrees C / 131 degrees F
    Module voltage                            :  3.252 V
    Wavelength channel number                 :  28
    Wavelength setpoint                       :  1550.12 nm
    Tx dither                                 :  Disabled
    Frequency error                           :  0.00 GHz
    Wavelength error                          :  0 nm
    TEC fault alarm                           :  False
    Wavelength unlocked alarm                 :  False
    Tx tune alarm                             :  False
    Module temperature high alarm             :  Off
    Module temperature low alarm              :  Off
    Module temperature high warning           :  Off
    Module temperature low warning            :  Off
    Module voltage high alarm                 :  Off
    Module voltage low alarm                  :  Off
    Module voltage high warning               :  Off
    Module voltage low warning                :  Off
    Module temperature high alarm threshold   :  76 degrees C / 168 degrees F
    Module temperature low alarm threshold    :  -6 degrees C / 21 degrees F
    Module temperature high warning threshold :  73 degrees C / 163 degrees F
    Module temperature low warning threshold  :  -3 degrees C / 26 degrees F
    Module voltage high alarm threshold       :  3.7 V
    Module voltage low alarm threshold        :  3 V
    Module voltage high warning threshold     :  3.599 V
    Module voltage low warning threshold      :  3.049 V
    Laser bias current high alarm threshold   :  120 mA
    Laser bias current low alarm threshold    :  80 mA
    Laser bias current high warning threshold :  110 mA
    Laser bias current low warning threshold  :  90 mA
    Laser output power high alarm threshold   :  2.511 mW / 4.00 dBm
    Laser output power low alarm threshold    :  0.125 mW / -8.99 dBm
    Laser output power high warning threshold :  1.995 mW / 3.00 dBm
    Laser output power low warning threshold  :  0.158 mW / -7.99 dBm
    Laser rx power high alarm threshold       :  2.511 mW / 4.00 dBm
    Laser rx power low alarm threshold        :  0.006 mW / -22.00 dBm
    Laser rx power high warning threshold     :  1.995 mW / 3.00 dBm
    Laser rx power low warning threshold      :  0.012 mW / -18.99 dBm
    Laser temperature high alarm threshold    :  65 degrees C / 149 degrees F
    Laser temperature low alarm threshold     :  25 degrees C / 77 degrees F
    Laser temperature high warning threshold  :  55 degrees C / 131 degrees F
    Laser temperature low warning threshold   :  35 degrees C / 95 degrees F
  Lane 0
    Laser bias current                        :  100 mA
    Laser output power                        :  1.004 mW / 0.01 dBm
    Laser temperature                         :  48 degrees C / 118 degrees F
    Laser receiver power                      :  0.887 mW / -0.51 dBm
    Rx power (signal)                         :  0.00 mW / -44.00 dBm <-------
    Lane chromatic dispersion                 :  0.0 ps/nm
    Lane differential group delay             :  0.0 ps
    Lane carrier frequency offset             :  0.0 MHz
    Lane polarization dependent loss          :  0.0 dB
    Lane snr                                  :  0.0 dB
    Lane Optical signal-to-noise ratio        :  0.0 dB
    Lane sopmd                                :  0.0
    Laser bias current high alarm             :  Off
    Laser bias current low alarm              :  Off
    Laser bias current high warning           :  Off
    Laser bias current low warning            :  Off
    Laser temperature high alarm              :  Off
    Laser temperature low alarm               :  Off
    Laser temperature high warning            :  Off
    Laser temperature low warning             :  Off
    Laser receiver power high alarm           :  Off
    Laser receiver power low alarm            :  Off
    Laser receiver power high warning         :  Off
    Laser receiver power low warning          :  Off
    Laser output power high alarm             :  Off
    Laser output power low alarm              :  Off
    Laser output power high warning           :  Off
    Laser output power low warning            :  Off
    Tx loss of signal functionality alarm     :  Off
    Rx loss of signal alarm                   :  Off
    Tx laser disabled alarm                   :  Off

Ports in High-Power Mode

The number of ports supporting the 400G-ZR optics is restricted based on the power consumption on the QFX5220-32CD and QFX5130-32CD devices. For better thermal handling, 16 ports out of 32 QSFP56-DD ports (0, 3, 4, 7, 8, 11, 12, 15, 16, 19, 20, 23, 24, 27, 28, 31) support the 400G-ZR optics.

The below table includes the corresponding ports that are configured as “unused”.

Table 6: Ports Supporting 400G-ZR Optics
Ports Supporting 400G-ZR Optics	Corresponding Ports to Be Configured to Unused
0	1
3	2
4	5
7	6
8	9
11	10
12	13
15	14
16	17
19	18
20	21
23	22
24	25
27	26
28	29
31	30

See Configure High Power Mode to configure the ports in the high-power mode.

Configure 400ZR and 400G OpenZR+ Coherent Optics

In configuration mode, go to the [edit interfaces interface-name] hierarchy.
```
[edit]
user@host# edit interfaces interface-name 
```
Include the speed statement at the [edit interfaces interface-name] hierarchy level to configure the speed.
```
[edit interfaces interface-name]
user@host# set speed (400g | 100g);
```
Configure speed and channelization.
```
[edit interfaces interface-name]
user@host# set number-of-sub-ports <number-of-sub-ports>
```
You must use [edit chassis fpc fpc-slot pic pic-number] set number-of-sub-ports number-of-sub-ports hierarchy to configure speed and channelization.

Configure a different application for a speed.

Change to the [edit interfaces interface-name optics-options].

content_copy zoom_out_map
[edit interfaces interface-name]
user@host# edit interfaces interface-name optics-options

Execute the following command in this hierarchy.

content_copy zoom_out_map
user@host# set interfaces <interface> optics-options application hostid <hostid> mediaid <mediaid> [domainid
<domainid>]

[Optional] Configure output power in the [edit interfaces interface-name optics-options] hierarchy level. If in channelized mode, you must use the first sub-port to configure output power.
```
user@host# set interface et-<interface> optics-option tx-power <tx power> 
```
Example:
```
user@host# set interfaces et-0/0/0:0 optics-options tx-power -10
```
Specify the wavelength of optics in nm. If in channelized mode, you must use the first sub-port to configure wavelength.
```
[edit interfaces interface-name optics-options] 
user@host# set wavelength nm
```
Example:
```
user@host# set interfaces et-0/0/0:0 optics-options wavelength 1552.52
```

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Ethernet Interfaces User Guide for Routing Devices

ON THIS PAGE

Features of 400ZR and 400G OpenZR+

Application Selection

Configure Application Selection

Target Output Power

Configure Target Output Power

Enhanced Loopback Options

Tunable Wavelength

Signal Power Performance

Ports in High-Power Mode

Configure 400ZR and 400G OpenZR+ Coherent Optics

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