In this post, you’ll learn everything about the first two Juniper Cloud-Metro devices: ACX7100-32C and ACX7100-48L.
Article co-written by Nicolas Fevrier and Pankaj Kumar.
High-Level Introduction
ACX7100 is the first Juniper product powered by Broadcom Jericho2 [BCM88690] and running Junos EVO modular software architecture.
The products exists in two flavors:
- ACX7100-48L: 48 ports 10/25/50GE and 6 ports 100/200/400GE
- ACX7100-32C: 32 ports 40/100GE and 4 ports 100/200/400GE
ACX7100-48L AND ACX7100-32C Front View
Both devices are 1RU Ethernet-only routers with 4.8 Tbps forwarding capacity and Class-C Timing. MACsec is supported on all the ports of the ACX7100-32C only.
They are primarily targeted at the aggregation market but can be used in multiple roles once features and scales meet the requirements.
Maximum number of ports supported on ACX7100 Routers:
| Port Speed |
ACX7100-32C
Total Supported Ports |
ACX7100-32C
Details |
ACX7100-48L
Total Supported Ports |
ACX7100-48L
Details |
| 400GE |
4 |
4x 1 |
6 |
6x 1 |
| 100GE |
48 |
32x 1 + 4x (4x1) |
24 |
6x (4x1) |
| 50GE |
96 |
32x (2x1) + 4x (8x1) |
95 |
47 + 6x (8x1) |
| 40GE |
36 |
32x 1 + 4x 1 |
6 |
6x 1 |
| 25GE |
80 |
16x (4x1) + 4x (4x1) |
72 |
48 + 6x (4x1) |
| 10GE |
80 |
16x (4x1) + 4x (4x1) |
72 |
48 + 6x (4x1) |
| 1GE |
0* |
0* |
0* |
0* |
* At the moment of this publication, solutions are under investigation to offer 1GE connectivity.
Naming convention
In ACX7100 systems, aside from optics, the only field replaceable parts are the power supply modules, the fan trays and the SATA SSD.
We have a total of 6 SKUs available based on three parameters:
- Port density and port type: 32C for 32x 100GE and 48L for 48x (10/25/50GE)
- Power supply: AC or DC PSM
- Airflow: AFO (Air Flow Out / front-to-back) or AFI (Air Flow In / back-to-front)
Based on these parameters, the naming logic for the product itself and the SKU is the following.
Product Labels in Front View
Products:
SKUs:
The ACX7100-48L exists in both AFO (front to back) and AFI (back to front) versions:
ACX7100-48L Cooling Options: Front to Back and Back to Front
The ACX7100-32C is only available in AFO version:
ACX7100-32C Unique Cooling Option: Front to Back
It gives us a total of 6 SKUs:
| SKU |
Description |
| ACX7100-48L-AC-AO |
48x 50GE + 6x 400GE / AC PSM / Front-to-Back cooling |
| ACX7100-48L-AC-AI |
48x 50GE + 6x 400GE / AC PSM / Back-to-Front cooling |
| ACX7100-48L-DC-AO |
48x 50GE + 6x 400GE / DC PSM / Front-to-Back cooling |
| ACX7100-48L-DC-AI |
48x 50GE + 6x 400GE / DC PSM / Back-to-Front cooling |
| ACX7100-32C-AC-AO |
32x 100GE + 4x 400GE / AC PSM / Front-to-Back cooling |
| ACX7100-32C-AC-AI |
32x 100GE + 4x 400GE / DC PSM / Front-to-Back cooling |
Note: we can not mix Fan Tray types (AFI+AFO) or PSM units (AC+DC).
We invite you to take a look at the TechLibrary hardware guide for more details: https://www.juniper.net/documentation/us/en/hardware/acx7100-48L/topics/topic-map/acx7100-48L-system-overview.html and https://www.juniper.net/documentation/us/en/hardware/acx7100-32C/topics/topic-map/acx7100-32C-system-overview.html
ACX7100-48L
regress@rtme-acx-48L> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis YW02210xxxxx JNP7100-48L [ACX7100-48L]
PSM 0 REV 04 740-085431 1ED7A1xxxxx PSU 1600W AC, Front to Back Airflow
PSM 1 REV 04 740-085431 1ED7A1xxxxx PSU 1600W AC, Front to Back Airflow
Routing Engine 0 REV 08 611-112446 YY02210xxxxx RE-JNP-7100
CB 0 REV 10 650-113149 YW02210xxxxx Control Board
FPC 0 BUILTIN BUILTIN ACX7100-48L
PIC 0 BUILTIN BUILTIN MRATE- 48xSFP56 + 6xQSFP56-DD
Xcvr 0 REV 01 740-021308 97D625Axxxxx SFP+-10G-SR
Xcvr 1 REV 01 740-021308 AJQxxxx SFP+-10G-SR
Xcvr 3 0 NON-JNPR ONT154xxxxx SFP+-10G-LR
Xcvr 4 REV 01 740-031981 AP4xxxx SFP+-10G-LR
Xcvr 6 REV 01 740-031981 45T0124xxxxx SFP+-10G-LR
Xcvr 7 REV 01 740-031981 38T0124xxxxx SFP+-10G-LR
Xcvr 42 REV 01 740-031981 45T0124xxxxx SFP+-10G-LR
Xcvr 43 0 NON-JNPR ONT154xxxxx SFP+-10G-LR
Xcvr 45 REV 01 740-021308 ALDxxxx SFP+-10G-SR
Xcvr 48 REV 01 740-058734 1F1CQ1Axxxxxx QSFP-100GBASE-SR4
Xcvr 50 XXXX NON-JNPR L2128xxxxx QSFP56-DD-400G-ZR
Xcvr 51 XXXX NON-JNPR L2131xxxxx QSFP56-DD-400G-ZR
Fan Tray 0 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 1 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 2 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 3 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 4 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 5 JNP7100 Fan Tray, Front to Back Airflow - AFO
regress@rtme-acx-48L>
ACX7100-32C
regress@rtme-acx7100-32C> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis YX02211xxxxx JNP7100-32C [ACX7100-32C]
PSM 0 REV 04 740-085431 1ED7A1xxxxx PSU 1600W AC, Front to Back Airflow
PSM 1 REV 04 740-085431 1ED7A1xxxxx PSU 1600W AC, Front to Back Airflow
Routing Engine 0 REV 09 611-112446 YY02211xxxxx RE-JNP-7100
CB 0 REV 13 650-113148 YX02211xxxxx Control Board
FPC 0 BUILTIN BUILTIN ACX7100-32C
PIC 0 BUILTIN BUILTIN MRATE- 32xQSFP-DD + 4xQSFP56-DD
Xcvr 0 REV 01 740-058734 1A3CQ1A5xxxxx QSFP-100GBASE-SR4
Xcvr 1 REV 01 740-058734 1F1CQ1A6xxxxx QSFP-100GBASE-SR4
Xcvr 2 REV 01 740-058734 1F1CQ1A6xxxxx QSFP-100GBASE-SR4
Xcvr 3 REV 01 740-058734 1F1CQ1A6xxxxx QSFP-100GBASE-SR4
Xcvr 4 REV 01 740-058734 1F1CQ1A6xxxxx QSFP-100GBASE-SR4
Xcvr 5 REV 01 740-058734 1F1CQ1A6xxxxx QSFP-100GBASE-SR4
Fan Tray 0 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 1 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 2 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 3 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 4 JNP7100 Fan Tray, Front to Back Airflow - AFO
Fan Tray 5 JNP7100 Fan Tray, Front to Back Airflow - AFO
regress@rtme-acx7100-32C>
Software
The minimum Junos release required to operate ACX7100 is 21.1R1.
The image is named: junos-evo-install-acx-f-x86-64-<release-ver>-EVO
regress@rtme-acx7100-32> show version
Hostname: rtme-acx7100-32C
Model: ACX7100-32C
Junos: 22.2R1.12-EVO
Yocto: 3.0.2
Linux Kernel: 5.2.60-yocto-standard-g34a7a87
JUNOS-EVO OS 64-bit [junos-evo-install-acx-f-x86-64-22.2R1.12-EVO]
regress@rtme-acx7100-32C>
regress@rtme-acx-48L> show version
Hostname: rtme-acx-48L
Model: ACX7100-48L
Junos: 22.2R1.12-EVO
Yocto: 3.0.2
Linux Kernel: 5.2.60-yocto-standard-g34a7a87
JUNOS-EVO OS 64-bit junos-evo-install-acx-f-x86-64-22.2R1.12-EVO]
regress@rtme-acx-48L>
Both ACX7100-32C and ACX7100-48L are using the same “acx-f” images (f for fixed). “acx-m” is used for modular systems.
ACX7100 Ethernet Ports
To verify the latest support of optics, always use the Hardware Compatibility Tool: https://apps.juniper.net/hct/product/?prd=ACX7100-48L and https://apps.juniper.net/hct/product/?prd=ACX7100-32C
In ACX7k Series, all physical interfaces are named "et-*" regardless of the optics/speed. It simplifies significantly the port migration tasks. In this example below, you can verify that port 10GE, 100GE or 400GE are all "et-x/y/z":
regress@rtme-acx-48L> show interfaces et-0/0/0
Physical interface: et-0/0/0, Enabled, Physical link is Up
Interface index: 1008, SNMP ifIndex: 505
Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Speed: 10Gbps, 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
Device flags : Present Running
Interface flags: SNMP-Traps
CoS queues : 8 supported, 8 maximum usable queues
Current address: ac:78:d1:23:a3:a8, Hardware address: ac:78:d1:23:a3:a8
Last flapped : 2022-08-12 20:27:57 PDT (4d 14:14 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Active alarms : None
Active defects : None
PCS statistics Seconds
Bit errors 0
Errored blocks 0
Ethernet FEC Mode : NONE
Ethernet FEC statistics Errors
FEC Corrected Errors 0
FEC Uncorrected Errors 0
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
Interface transmit statistics: Disabled
Link Degrade :
Link Monitoring : Disable
Logical interface et-0/0/0.16386 (Index 1008) (SNMP ifIndex 613)
Flags: Up SNMP-Traps Encapsulation: ENET2
Input packets : 0
Output packets: 0
Protocol multiservice, MTU: Unlimited
Flags: None
regress@rtme-acx-48L> show interfaces et-0/0/48
Physical interface: et-0/0/48, Enabled, Physical link is Down
Interface index: 1056, SNMP ifIndex: 601
Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Speed: 100Gbps, 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
Device flags : Present Running Down
Interface flags: Hardware-Down SNMP-Traps
CoS queues : 8 supported, 8 maximum usable queues
Current address: ac:78:d1:23:a5:28, Hardware address: ac:78:d1:23:a5:28
Last flapped : Never
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 : FEC91
Ethernet FEC statistics Errors
FEC Corrected Errors 0
FEC Uncorrected Errors 0
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
Interface transmit statistics: Disabled
Link Degrade :
Link Monitoring : Disable
Logical interface et-0/0/48.0 (Index 1015) (SNMP ifIndex 512)
Flags: Up SNMP-Traps Encapsulation: ENET2
Input packets : 0
Output packets: 0
Protocol inet
Max nh cache: 100000, New hold nh limit: 100000, Curr nh cnt: 0, Curr new hold cnt: 0, NH drop cnt: 0
MTU: 1500
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Is-Preferred Is-Primary
Destination: 23.23.23.0/30.0, Local: 23.23.23.1, Broadcast: 23.23.23.3
Protocol multiservice, MTU: Unlimited
Flags: None
regress@rtme-acx-48L> show interfaces et-0/0/49
Physical interface: et-0/0/49, Enabled, Physical link is Down
Interface index: 1057, SNMP ifIndex: 603
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
Device flags : Present Running Down
Interface flags: Hardware-Down SNMP-Traps
CoS queues : 8 supported, 8 maximum usable queues
Current address: ac:78:d1:23:a5:30, Hardware address: ac:78:d1:23:a5:30
Last flapped : Never
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 0
FEC Uncorrected Errors 0
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
Interface transmit statistics: Disabled
Link Degrade :
Link Monitoring : Disable
Logical interface et-0/0/49.16386 (Index 1055) (SNMP ifIndex 657)
Flags: Up SNMP-Traps Encapsulation: ENET2
Input packets : 0
Output packets: 0
Protocol multiservice, MTU: Unlimited
Flags: None
regress@rtme-acx-48L>
ACX7100-48L Front Panel view and Port Numbering
ACX7100-48L Interfaces
| Port Number(s) |
Optic Type |
Supported Ports |
Default Port Type |
| 0 - 46 |
SFP+, SFP28, SFP56 |
10GE, 25GE, 50GE |
1x10GE |
| 47 |
SFP+ or SFP28 |
10GE, 25GE |
1x10GE |
| 48 - 53 |
QSFP56-DD |
100GE, 200GE, 400GE |
1x400GE |
We have various breakout options available like 4x10GE, 4x25GE, 2x50GE, 8x50GE along with native 10GE, 25GE, 50GE, 100GE and 400GE support.
Check the port capabilities with the CLI command “show chassis pic fpc-slot 0 pic-slot 0”.
regress@rtme-acx-L> show chassis pic fpc-slot 0 pic-slot 0
FPC slot 0, PIC slot 0 information:
Type MRATE- 48xSFP56 + 6xQSFP56-DD
<SNIP>
Port speed information:
Port PFE Capable Port Speeds
0 0 1x10G 1x25G 1x50G
1 0 1x10G 1x25G 1x50G
2 0 1x10G 1x25G 1x50G
3 0 1x10G 1x25G 1x50G
4 0 1x10G 1x25G 1x50G
5 0 1x10G 1x25G 1x50G
6 0 1x10G 1x25G 1x50G
7 0 1x10G 1x25G 1x50G
8 0 1x10G 1x25G 1x50G
9 0 1x10G 1x25G 1x50G
10 0 1x10G 1x25G 1x50G
11 0 1x10G 1x25G 1x50G
12 0 1x10G 1x25G 1x50G
13 0 1x10G 1x25G 1x50G
14 0 1x10G 1x25G 1x50G
15 0 1x10G 1x25G 1x50G
16 0 1x10G 1x25G 1x50G
17 0 1x10G 1x25G 1x50G
18 0 1x10G 1x25G 1x50G
19 0 1x10G 1x25G 1x50G
20 0 1x10G 1x25G 1x50G
21 0 1x10G 1x25G 1x50G
22 0 1x10G 1x25G 1x50G
23 0 1x10G 1x25G 1x50G
24 0 1x10G 1x25G 1x50G
25 0 1x10G 1x25G 1x50G
26 0 1x10G 1x25G 1x50G
27 0 1x10G 1x25G 1x50G
28 0 1x10G 1x25G 1x50G
29 0 1x10G 1x25G 1x50G
30 0 1x10G 1x25G 1x50G
31 0 1x10G 1x25G 1x50G
32 0 1x10G 1x25G 1x50G
33 0 1x10G 1x25G 1x50G
34 0 1x10G 1x25G 1x50G
35 0 1x10G 1x25G 1x50G
36 0 1x10G 1x25G 1x50G
37 0 1x10G 1x25G 1x50G
38 0 1x10G 1x25G 1x50G
39 0 1x10G 1x25G 1x50G
40 0 1x10G 1x25G 1x50G
41 0 1x10G 1x25G 1x50G
42 0 1x10G 1x25G 1x50G
43 0 1x10G 1x25G 1x50G
44 0 1x10G 1x25G 1x50G
45 0 1x10G 1x25G 1x50G
46 0 1x10G 1x25G 1x50G
47 0 1x10G 1x25G
48 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
49 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
50 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
51 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
52 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
53 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
54 NA 1x10G
regress@rtme-acx-48L>
Port 54 is internal-only and used to connect to the PTP (Precision Time Protocol) FPGA via a mux. You’ll also note that ACX7100-48L doesn’t support 1GE ports at FRS (launch date). A solution to provide 1GE capability is under consideration, but it’s not a mode natively supported by Jericho2.
ACX7100-48L Port Groups
ACX7100-48L Port Groups and Their Interfaces
To understand the configuration capabilities, we need to introduce the concept of “Port Group” (PG). As the name implies, a PG gathers several adjacent ports.
Internally, the ports of a given PG are mapped to the same Port Macro (PM). A PM is block of SerDes (Serializer/Deserializer) connecting the PFE to other elements inside the router, including Network Interfaces and Fabric Ports. For more details on this concept, we invite you to read the “Port Macros” section of this article: https://community.juniper.net/blogs/nicolas-fevrier/2022/06/25/building-the-acx7000-series-the-pfe
We can abstract it to this diagram:
Mapping of ports to Port Macro and J2 Cores
For the SFP ports, from 0 to 47, 8 ports constitute a group.
| PG 0 |
Ports 0 - 7 |
| PG 1 |
Ports 8 - 15 |
| PG 2 |
Ports 16 - 23 |
| PG 3 |
Ports 24 - 31 |
| PG 4 |
Ports 32 - 37 |
| PG 5 |
Ports 40 - 47 |
Depending on their electrical specifications, optic modules require appropriate clock sources. A given Port Group can only be configured with two clock speeds. It impacts the combination of port types we support within this PG. For example, it will accept 10 Gbps + 25 Gbps, or 10 Gbps + 50 Gbps, or 25 Gbps + 50 Gbps, but it won’t be possible to add a third clock speed in the mix.
The QSFP ports from 48 to 53 are individually considered as a Port Group, there are no specific limitations for them.
ACX7100-48L: Port Configuration and Port Checker Tool
Always use the port checker tool to verify the support and understand the potential restrictions: https://apps.juniper.net/home/port-checker/index.html
These limitations in port usage and port combination are the following:
Once PTP is enabled, Port 47 is not usable
This port 47 can be used with 10GE or 25GE, but not 50GE optics, that’s why you’ll find in the public documentation that router forwarding capability is 4.775 Tbps (and not 4.8T).
Once the PTP FPGA is enabled, the port is disabled. Indeed, we use an internal mux to connect to the PTP chipset.
To activate the PTP FPGA, use the following CLI configuration:
set chassis fpc 0 pic 0 ptp-mode
Illustration of Port Checker when Using PTP FPGA
From a configuration perspective, it's important to understand that channelized / breakout ports will not appear if you don't explicitly set up the N+1 port as "unused".
Let's illustrate this behaviour with a quick demo on the router CLI. We have a QSFP+ optics 40GE inserted in port 0/0/6. Port 0/0/7 is empty.
If we configure and commit only the number of sub-ports for 0/0/6, the channelized ports won't show up. Only after explicitly configuring port 0/0/7 as "unused", we will see the four sub-ports under 0/0/6:[0-3].
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/6*
Interface Admin Link Proto Local Remote
et-0/0/6 up down
et-0/0/6.16386 up down multiservice
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/7*
Interface Admin Link Proto Local Remote
et-0/0/7 up down
et-0/0/7.16386 up down multiservice
[edit]
root@rtme-acx7100# show interfaces et-0/0/6
[edit]
root@rtme-acx7100# show interfaces et-0/0/7
[edit]
root@rtme-acx7100# set interfaces et-0/0/6 number-of-sub-ports 4 speed 10g
[edit]
root@rtme-acx7100# show interfaces et-0/0/6
number-of-sub-ports 4;
speed 10g;
[edit]
root@rtme-acx7100# commit
commit complete
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/6*
Interface Admin Link Proto Local Remote
et-0/0/6 up down
et-0/0/6.16386 up down multiservice
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/7*
Interface Admin Link Proto Local Remote
et-0/0/7 up down
et-0/0/7.16386 up down multiservice
[edit]
root@rtme-acx7100# set interfaces et-0/0/7 unused
[edit]
root@rtme-acx7100# commit
commit complete
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/6*
Interface Admin Link Proto Local Remote
et-0/0/6:0 up down
et-0/0/6:1 up down
et-0/0/6:2 up down
et-0/0/6:3 up down
[edit]
root@rtme-acx7100# run show interfaces terse et-0/0/7*
error: device et-0/0/7* not found
[edit]
root@rtme-acx7100#
Only two SerDes speeds can be configured in a given Port Group
Keep in mind that port speed and SerDes rates are different, the second category is Broadcom internal rates: 10.3125Gbps, 20.725Gbps, 25.7825Gbps, 53.125Gbps…
SFP56
Ports 0 to 47 |
J2 SerDes
(Gbps) |
| 50GE (not supported in port 47) |
53.125 |
| 25GE |
25.7825 |
| 10GE |
10.3125 |
QSFP56-DD
Ports 32 to 35 |
J2 SerDes
(Gbps) |
| 400GE |
8x 53.125 |
| 4x 100GE BreakOut |
8x 53.125 |
| 2x 100GE BreakOut |
8x 25.7825 |
| 100GE (SR4/LR4/ER4/...) |
4x 25.7825 |
Illustration of Port Checker when Using More Than 2 SerDes Rates
ACX7100-32C Front Panel View and Port Numbering
ACX7100-32C Interfaces
| Port Number(s) |
Optic Type |
Default Port Speed |
| 0 - 31 |
QSFP-DD |
1x100GE |
| 32 - 35 |
QSFP56-DD |
1x400GE |
The first 32 ports are QSFP-DD cages mounted in a belly-to-belly fashion. With this design, they support high-power QSFP28 modules. A follow-up article will be published soon, demonstrating the use of ZR ports on all ports.
We also have various breakout options available like 4x10GE, 4x25GE, 2x50GE, 8x50GE along with native 10GE, 25GE, 50GE, 100GE and 400GE support.
Check the various port capabilities with the CLI command “show chassis pic fpc-slot 0 pic-slot 0”.
regress@rtme-acx7100-32C> show chassis pic fpc-slot 0 pic-slot 0
FPC slot 0, PIC slot 0 information:
Type MRATE- 32xQSFP-DD + 4xQSFP56-DD
State Online
PIC version 01.13
Uptime 20 days, 18 hours, 49 minutes, 7 seconds
<SNIP>
Port speed information:
Port PFE Capable Port Speeds
0 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
1 0 1x100G 1x40G 2x50G 1x25G 1x10G
2 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
3 0 1x100G 1x40G 2x50G 1x25G 1x10G
4 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
5 0 1x100G 1x40G 2x50G 1x25G 1x10G
6 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
7 0 1x100G 1x40G 2x50G 1x25G 1x10G
8 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
9 0 1x100G 1x40G 2x50G 1x25G 1x10G
10 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
11 0 1x100G 1x40G 2x50G 1x25G 1x10G
12 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
13 0 1x100G 1x40G 2x50G 1x25G 1x10G
14 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
15 0 1x100G 1x40G 2x50G 1x25G 1x10G
16 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
17 0 1x100G 1x40G 2x50G 1x25G 1x10G
18 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
19 0 1x100G 1x40G 2x50G 1x25G 1x10G
20 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
21 0 1x100G 1x40G 2x50G 1x25G 1x10G
22 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
23 0 1x100G 1x40G 2x50G 1x25G 1x10G
24 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
25 0 1x100G 1x40G 2x50G 1x25G 1x10G
26 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
27 0 1x100G 1x40G 2x50G 1x25G 1x10G
28 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
29 0 1x100G 1x40G 2x50G 1x25G 1x10G
30 0 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G
31 0 1x100G 1x40G 2x50G 1x25G 1x10G
32 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
33 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
34 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
35 0 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G
36 NA 1x10G
regress@rtme-acx7100-32C>
Note: port 36 is internal-only and used to connect to the PTP FPGA.
You can get similar info from the CLI-PFE by using the “show picd config” command (note that cli-pfe commands are not official supported and can change in their form or output without any notification).
[vrf:none] regress@rtme-acx7100-32C:~# cli-pfe
regress@rtme-acx7100-32C:pfe> show picd config
pic_info_table :
default
config config config computed
pic_or_port speed
pic_mode port_speed valid speed supported_speeds
hidden_speeds
----------- ------- -------- ---------- ------ -------- ------------------------------------------------------------- -------------
pic-0/0 - - - - -
port-0/0/0 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/1 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/2 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/3 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/4 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/5 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/6 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/7 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/8 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/9 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/10 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/11 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/12 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/13 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/14 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/15 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/16 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/17 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/18 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/19 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/20 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/21 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/22 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/23 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/24 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/25 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/26 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/27 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/28 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/29 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/30 1x100G - - - 1x100G [ 1x100G 4x25G 1x40G 4x10G 2x50G 1x25G 1x10G ] [ ]
port-0/0/31 1x100G - - - 1x100G [ 1x100G 1x40G 2x50G 1x25G 1x10G ] [ ]
port-0/0/32 1x400G - - - 1x400G [ 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G ] [ ]
port-0/0/33 1x400G - - - 1x400G [ 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G ] [ ]
port-0/0/34 1x400G - - - 1x400G [ 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G ] [ ]
port-0/0/35 1x400G - - - 1x400G [ 1x400G 1x100G 1x40G 4x100G 2x100G 8x50G 2x50G 4x25G 4x10G ] [ ]
port-0/0/36 0x0 - - - 0x0 [ 1x10G ] [ ]
usr_config :
regress@rtme-acx7100-32C:pfe>
ACX7100-32C Port Groups
ACX7100-32C Port Groups and Their Interfaces
The same concept of Port Group described for ACX7100-48L exists in the ACX7100-32C. It influences the port configuration capabilities.
ACX7100-32C Port Mapping to PM and Cores
For the QSFP ports from 0 to 31, 4 subsequent ports constitute a group.
| PG 0 |
Ports 0 - 3 |
| PG 1 |
Ports 4 - 7 |
| PG 2 |
Ports 8 - 11 |
| PG 3 |
Ports 12 - 15 |
| PG 4 |
Ports 16 - 19 |
| PG 5 |
Ports 20 - 23 |
| PG 6 |
Ports 24 - 27 |
| PG 7 |
Ports 28 - 31 |
The QSFP56-DD ports from 32 to 35 are individually considered as a port group, so there are no specific limitations for them.
ACX7100-32C Port Configuration and Port Checker Tool
We invite you to use the port checker tool to verify the support and understand the potential restrictions: https://apps.juniper.net/home/port-checker/index.html
These limitations in port usage and port combination are the following:
Once PTP is enabled, Port 31 is not available (the same reason as port 47 on ACX7100-48L described in the previous section).
Illustration of Port Checker when Using PTP FPGA
Only even ports can be channelized (configured with breakout). For odd ports, we don’t allow the configuration of 4x10GE and 4x25GE as shown below.
Once an even port (N) is configured as channelized, the N+1 port must be configured as unused. This restriction is coming from the maximum number of internal MAC addresses we can use (logically, a break-out port consumes 4 MAC addresses).
Note: The ACX7100-48L supports 2x50GE on both odd and even ports, the limitation only applies to 4x10GE and 4x25GE.
Illustration of Port Checker when Using BreakOut Cables
Only two SerDes speeds can be configured in a given Port Group
Keep in mind that port speed and SerDes rates are different, these rates are Broadcom internal rates: 10.3125Gbps, 20.725Gbps, 25.7825Gbps, 53.125Gbps…
|
QSFP-DD Ports 0 to 31
|
J2 SerDes (Gbps)
|
Converted by GearBox
into Line SerDes (Gbps)
|
|
100GE
|
2x 53.125
|
4x 25.7825
|
|
4x 25GE BreakOut
|
4x 25.7825
|
4x 25.7825
|
|
40GE
|
2x 20.725
|
4x 10.3125
|
|
4x 10GE BreakOut
|
4x 10.3125
|
4x 10.3125
|
QSFP56-DD
Ports 32 to 35 |
J2 SerDes (Gbps) |
| 400GE |
8x 53.125 |
| 4x 100GE BreakOut |
8x 53.125 |
| 2x 100GE BreakOut |
8x 25.7825 |
| 100GE (SR4/LR4/ER4/...) |
4x 25.7825 |
Illustration of Port Checker when Using More Than 2 SerDes Rates
Note it’s possible to use QSFP-to-SFP-Adaptors (QSA) in the 100GE slots. This use case could make sense if you need a small quantity of 10GE (particularly in long distances cases requiring ER reach, something not available with breakout options).
Internal Description: Block Diagrams
The ACX7100-32C is internally composed of multiple parts. We can summarize them as:
- A Broadcom Jericho2 PFE (BCM88690) with 8GB of HBM
- Multiple Gearboxes (GBs) to adapt 50 Gbps PAM4 into 25Gbps NRZ
- Multiple 400 Gbps PHY modules
- Intel x86 CPU (6 cores) with DDR4 memory and SSD storage
- Internal controllers for I2C (inter-integrated circuit), fan control, …
- PTP FPGA
- TPM 2.0 module (Trusted Platform Module)
ACX7100-32C Block Diagram
In this diagram, we are presenting the SerDes at 50 Gbps (instead of 53.125 Gbps) and 25 Gbps (instead of 25.7875 Gbps) for sake of simplicity.
It is worth mentioning also that “NRZ” and “PAM4” mentioned below “GearBoxes” and “Retimers” in this diagram are dependent on the type of the optic modules inserted. Also, you could legitimately ask why we are using GB for the ports 32 to 35 since they could be directly connected to the Port Macros / PFE. This part is actually required for MACsec encryption, a technology not natively available in Jericho2 ASIC.
The different components can be monitored via CLI.
regress@rtme-acx7100-32C:pfe> show gearbox list fpc 0 pic 0
INDEX NAME MDIO INIT
----------------------------------------
0 88X7121M_B0 0x0000 SUCCESS
1 88X7121M_B0 0x0008 SUCCESS
2 88X7121M_B0 0x0020 SUCCESS
3 88X7121M_B0 0x0028 SUCCESS
4 88X7121M_B0 0x0040 SUCCESS
5 88X7121M_B0 0x0048 SUCCESS
6 88X7121M_B0 0x0060 SUCCESS
7 88X7121M_B0 0x0068 SUCCESS
8 88X7121M_B0 0x0100 SUCCESS
9 88X7121M_B0 0x0108 SUCCESS
----------------------------------------
API Version: 2.3.0
Serdes FW Rev: 0.10.11.89
Chip FW Rev: 0.2.16.1
regress@rtme-acx7100-32C:pfe> show gearbox port-status fpc 0 pic 0
PORT LINK(L:H) SPEED MODE(L:H) LANE_MAP(L:H) SD(L:H) LOCK(L:H) MDIO AN(L)
------------------------------------------------------------------------------------------
0:0 --:UP 100G 62:69 0x000f:0x0003 0:1 0:1 0x0000(0) OFF
1:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0001(0) OFF
2:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x0002(0) OFF
3:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x0003(0) OFF
4:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0008(1) OFF
5:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0009(1) OFF
6:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x000a(1) OFF
7:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x000b(1) OFF
8:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0020(2) OFF
9:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0021(2) OFF
10:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x0022(2) OFF
11:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x0023(2) OFF
12:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0028(3) OFF
13:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0029(3) OFF
14:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x002a(3) OFF
15:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x002b(3) OFF
16:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0040(4) OFF
17:0 --:UP 100G 62:69 0x00f0:0x0030 0:1 0:1 0x0041(4) OFF
18:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x0042(4) OFF
19:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x0043(4) OFF
20:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0048(5) OFF
21:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0049(5) OFF
22:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x004a(5) OFF
23:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x004b(5) OFF
24:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0060(6) OFF
25:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0061(6) OFF
26:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x0062(6) OFF
27:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x0063(6) OFF
28:0 --:UP 100G 63:69 0x000f:0x0003 0:1 0:1 0x0068(7) OFF
29:0 --:UP 100G 63:69 0x00f0:0x0030 0:1 0:1 0x0069(7) OFF
30:0 --:UP 100G 63:69 0x0f00:0x0300 0:1 0:1 0x006a(7) OFF
31:0 --:UP 100G 63:69 0xf000:0x3000 0:1 0:1 0x006b(7) OFF
32:0 --:UP 400G 79:79 0x00ff:0x00ff 0:1 0:1 0x0100(8) OFF
33:0 --:UP 400G 79:79 0xff00:0xff00 0:1 0:1 0x0102(8) OFF
34:0 --:UP 400G 79:79 0x00ff:0x00ff 0:1 0:1 0x0108(9) OFF
35:0 --:UP 400G 79:79 0xff00:0xff00 0:1 0:1 0x010a(9) OFF
------------------------------------------------------------------------------------------
L:Line H:Host SD:Signal detect LOCK:Dsp lock !e: disable
regress@rtme-acx7100-32C:pfe> show system info
System Date : Mon Jul 11 07:56:30 PDT 2022
System Uptime : Up for 38-15:21:05
Pfe Uptime : Up for 38-15:19:39
CPU INFO:
========
Model name : Intel(R) Xeon(R) CPU D-1637 @ 2.90GHz
Configured CPU Speed : 1956.403 2730.638 1738.774 2876.145 2279.032 1903.599 2392.586 2759.427 2710.492 2428.014 1909.381 2113.616 MHz
Physical cores : 6
Hyperthreaded cores : 12
L1 Cache size : 0 kB
L2 Cache size : 0 kB
L23Cache size : 0 kB
CPU PAIRS:
=========
Core 0 : 0 6
Core 1 : 1 7
Core 2 : 2 8
Core 3 : 3 9
Core 4 : 4 10
Core 5 : 5 11
SYSTEM MEMORY USAGE (MB):
========================
MemTotal: 65281228 kB
MemFree: 46410328 kB
MemAvailable: 59100436 kB
Buffers: 647040 kB
Cached: 12470188 kB
SwapCached: 0 kB
SwapTotal: 4194300 kB
SwapFree: 4194300 kB
<SNIP>
The ACX7100-48L differs by the absence of gearboxes, the ports being directly connected to the PFE Port Macros (hence the lack of MACsec support on this platform).
ACX7100-48L Block Diagram
Fan Tray and Power Module Redundancy
Both ACX7100-48L and ACX7100-32C have a single routing engine. That means we don’t support any kind of High-Availability (HA) option at the RE level. Also, In-Service System Upgrade (ISSU) is not supported, nor planned.
The only field replaceable parts on these routers are:
- the Power Supply Modules (2x AC or 2x DC)
- the Fan Trays (6 blocks)
- the SATA SDD
The SSD maintenance is well documented in the TechLibrary articles:
Regarding the cooling system and power supply, they are all accessible from the back of the router:
AC and DC Systems Rear View
You notice two PSMs, one on each side of the router. They can be AC or DC but we can’t mix the two categories. With a 1+1 PSM configuration, we have power redundancy: if one fails, the system raises an alarm but stays fully operational.
regress@rtme-acx7100-32C> show chassis power detail
Chassis Power Voltage(V) Power(W)
Total Input Power 468
PSM 0
State: Online
Input 202 223
Output 11.97 201.25
Capacity 1600 W (maximum 1600 W)
PSM 1
State: Online
Input 202 245
Output 11.95 221.57
Capacity 1600 W (maximum 1600 W)
System:
Zone 0:
Capacity: 3200 W (maximum 3200 W)
Actual usage: 468 W
Total system capacity: 3200 W (maximum 3200 W)
regress@rtme-acx7100-32C>
ACX7100 relies on six Fan Trays for cooling purposes:
- ACX7100-48L is designed for both front-to-back airflow and back-to-front airflow
- ACX7100-32C is designed only for front-to-back airflow
Each Fan Tray is a pluggable module hosting two 40x40 mm counter-rotating rotors (Fan 1 and Fan 2 below). The system supports single rotor failure (N+1 redundancy).
regress@rtme-acx7100-32C> show chassis fan
Item Status % RPM Measurement
Fan Tray 0 Fan 1 OK 43% 12800 RPM
Fan Tray 0 Fan 2 OK 43% 10800 RPM
Fan Tray 1 Fan 1 OK 43% 13000 RPM
Fan Tray 1 Fan 2 OK 44% 11000 RPM
Fan Tray 2 Fan 1 OK 43% 12800 RPM
Fan Tray 2 Fan 2 OK 43% 10800 RPM
Fan Tray 3 Fan 1 OK 43% 12800 RPM
Fan Tray 3 Fan 2 OK 43% 10800 RPM
Fan Tray 4 Fan 1 OK 43% 13000 RPM
Fan Tray 4 Fan 2 OK 43% 10800 RPM
Fan Tray 5 Fan 1 OK 43% 12800 RPM
Fan Tray 5 Fan 2 OK 44% 11000 RPM
regress@rtme-acx7100-32C>
Note: it is possible to deactivate half of the ports and shut down the associated PFE core. This power-saving mode can reduce the consumption for low port density deployments: https://www.juniper.net/documentation/us/en/software/junos/chassis/topics/task/configuring-power-saving-mode.html
PFE Description
We invite you to check the articles to learn more about the ASIC selection process and many more details on the packet forwarding ASIC.
The ACX7100-48L and ACX7100-32C are “Systems on the Chip” (SoC). That means they are based on a single PFE where all parts involved in the forwarding tasks are directly connected. This Jericho2 (BCM88690) PFE is a deep-buffer ASIC with hybrid packet memory (internal and external). The external buffer is actually present in the package itself: 8GB of HBM2 memory.
Follow-up articles in the near future will describe some internal key aspects of the PFE like the MDB profiles and the resource allocation/monitoring.
MACsec and Timing
MACsec is only supported on the ACX7100-32C ports (all of them) and not on the ACX7100-48L. The feature is fully handled by the gearbox.
Follow-up articles will be dedicated to security functions (including MACsec) and timing.
In Conclusion
The ACX7100-48L and ACX7100-32C routers are 1-RU, 4.8Tbps platforms, ideally positioned for multiple roles including 10G/25/50GE and 100GE to 400GE aggregation. In the next articles, we will continue the description of the ACX7000 portfolio and dig deeper into the specific features of these products.
Useful links
Glossary
- AFI: AirFlow In
- AFO: AirFlow Out
- FRS: First Revenue Ship
- GB: GearBox
- HBM: High Bandwidth Memory
- I2C: Inter-Integrated Circuit
- NRZ: Non-Return to Zero
- PAM4: Pulse Amplification Modulation 4
- PFE: Packet Forwarding Engine
- PG: Port Group
- PM: Port Macro
- PSM : Power Supply Module
- PTP: Precision Time Protocol
- QSA : QSFP to SFP Adaptor
- SerDes: Serializer Deserializer
- SKU: Stock Keeping Unit
- SSD / SATA: Solid State Drive / Serial Advanced Technology Attachment
- TPM : Trusted Platform Module
Acknowledgments
Thanks a lot to Kapil Jain, Frank Reade and Vasily Mukhin for the hardware details and document review.
Comments
If you want to reach out for comments, feedback or questions, drop us a mail at:
Revision History
| Version |
Author(s) |
Date |
Comments |
| 1 |
Pankaj Kumar &
Nicolas Fevrier |
August 2022 |
Initial Publication |
#ACXSeries