Verify the Interconnect Solution for CPU Socket Load Balancing

Basic Troubleshooting

Platform
Intel® PAC
Napatech SmartNIC
Content Type
User Guide
Capture Software Version
Link™ Capture Software 12.9

Test and verify the interconnect cable connection

Perform traffic test and verify the interconnect cable connection between two SmartNICs.

Note: This section applies to the following SmartNICs.
  • A pair of NT200A02 SmartNICs running on the 2 × 40 Gbit/s SLB image or the 8 × 10 Gbit/s SLB image.
  • A pair of NT100A01 SmartNICs running on the 4 × 10/1 Gbit/s test and measurement 1 image.
  • A pair of NT40A01 SmartNICs running on the 4 × 10/1 Gbit/s SLB image.

Interconnect cabling

Two SmartNICs must be connected by an interconnect cable.

Interconnect cabling between two NT100A01 SmartNICs

Example

Configure /opt/napatech3/config/ntservice.ini for CPU socket load balancing of the SmartNICs. For example:
[Adapter0]
BondingType = Master
NumaNode = 0 # Local NUMA node for this PCIe slot
[Adapter1]
BondingType = Slave
NumaNode = 1 # Local NUMA node for this PCIe slot
Start the ntservice daemon.
/opt/napatech3/bin/ntstart.sh
Frames can be transmitted from the host and receive on the same port without a pluggable module or cabling using the host-loopback feature. Configure the host loopback on port 0.
/opt/napatech3/bin/config --cmd set --port 0 --host_loopback on
Start the monitoring tool. The link status of port 0 in the monitoring tool is changed to H-Loopback.
*──────────────────── monitoring (v. 3.26.1.152-b05c76c8) ─────────────────────┐
│  P  A        Type       Link    Down          Rx          Tx  Max  Temp.     │
│  0  0        SFP+ H-Loopback       0       0.00M       0.00M  9018 33.80 C   │
│  1  0        SFP+   10G Full       0       0.00M       0.00M  9018 32.60 C   │
│  2  0        SFP+   10G Full       0       0.00M       0.00M  9018 39.50 C   │
│  3  0        SFP+   10G Full       0       0.00M       0.00M  9018 31.70 C   │
│  4  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
│  5  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
│  6  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
│  7  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
└──────────────────────────────────────────────────────────────────────────────┘
 Port  0 - Adapter 0 Intf 0: NT100A01_4x1G/10G
┌──────────────────────────────────────────────────────────────────────────────┐
│                                RX RMON1 counters                      Totals │
│ Packets         : #000000000000000000  Octets          : #000000000000000000 │
│ Broadcast       : #000000000000000000  Multicast       : #000000000000000000 │
│ 64 octets       : #000000000000000000  65-127 octets   : #000000000000000000 │
│ 128-255 octets  : #000000000000000000  256-511 octets  : #000000000000000000 │
│ 512-1023 octets : #000000000000000000  1024-1518 octets: #000000000000000000 │
│ Undersize       : #000000000000000000  Oversize        : #000000000000000000 │
│ Fragments       : #000000000000000000  Collisions      : #000000000000000000 │
│ Drop events     : #000000000000000000  Crc/Align errors: #000000000000000000 │
│ Jabbers         : #000000000000000000  Ext drops       : #000000000000000000 │
└──────────────────────────────────────────────────────────────────────────────┘
 Reset Tx/Rx 0RMON 1ExtRMON 2Checksum 3Decode 4Drop 5IPF Dec/Hex Tot/Spd
 Quit  Sensors Color stat XTimeSync IEEE 1588 PTP EStream LFlowstat FDump
On another terminal, run pktgen to generate traffic.
/opt/napatech3/bin/pktgen -p 0
Check the monitoring tool to see traffic received on port 0 (on the master SmartNIC) is replicated on port 4 (on the slave SmartNIC).
*──────────────────── monitoring (v. 3.26.1.152-b05c76c8) ─────────────────────┐
│  P  A        Type       Link    Down          Rx          Tx  Max  Temp.     │
│  0  0        SFP+ H-Loopback       0   10000.00M   10000.00M  9018 33.90 C   │
│  1  0        SFP+   10G Full       0       0.00M       0.00M  9018 32.80 C   │
│  2  0        SFP+   10G Full       0       0.00M       0.00M  9018 40.30 C   │
│  3  0        SFP+   10G Full       0       0.00M       0.00M  9018 32.00 C   │
│  4  1       Empty       Down       0   10000.00M       0.00M  9018     N/A   │
│  5  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
│  6  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
│  7  1       Empty       Down       0       0.00M       0.00M  9018     N/A   │
└──────────────────────────────────────────────────────────────────────────────┘
 Port  0 - Adapter 0 Intf 0: NT100A01_4x1G/10G
┌──────────────────────────────────────────────────────────────────────────────┐
│                                RX RMON1 counters                      Totals │
│ Packets         : #000000000050923290  Octets          : #000000052145448960 │
│ Broadcast       : #000000000000000000  Multicast       : #000000000000000000 │
│ 64 octets       : #000000000000000000  65-127 octets   : #000000000000000000 │
│ 128-255 octets  : #000000000000000000  256-511 octets  : #000000000000000000 │
│ 512-1023 octets : #000000000000000000  1024-1518 octets: #000000000050923290 │
│ Undersize       : #000000000000000000  Oversize        : #000000000000000000 │
│ Fragments       : #000000000000000000  Collisions      : #000000000000000000 │
│ Drop events     : #000000000000000000  Crc/Align errors: #000000000000000000 │
│ Jabbers         : #000000000000000000  Ext drops       : #000000000000000000 │
└──────────────────────────────────────────────────────────────────────────────┘
 Reset Tx/Rx 0RMON 1ExtRMON 2Checksum 3Decode 4Drop 5IPF Dec/Hex Tot/Spd
 Quit  Sensors Color stat XTimeSync IEEE 1588 PTP EStream LFlowstat FDump

See also DN-1128 for more information on CPU socket load balancing and DN-0449 for more information on the tools.