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Ixiasoft
2.1.2. 400G Hard IP and 200G Hard IP
F-tile supports 400G hard IP and 200G hard IP. 400G hard IP interfaces either with up to four FHT PMAs or 16 FGT PMAs (one at a time), and 200G hard IP interfaces with up to eight FGT PMAs.
400G hard IP and 200G hard IP can be divided into fractures. The building block of a fracture is a stream.
- A stream is a logical representation of a datapath connecting one EMIB to one PMA, so one stream maps to one EMIB and has a maximum of 32 Gbps data. One PMA can connect up to four streams.
- The PMA width determines the number of streams used. Each PMA with a width of 32 or less uses one stream. Each PMA with a width of 64 uses two streams. Each PMA with a width of 128 uses four streams. For example:
- 10GbE needs a single stream.
- 40GbE running on four 10 Gbps PMAs needs four streams.
- 53 Gbps PAM4 requires a 64 PMA width, so it needs two streams.
- 100 Gbps PAM4 requires a 128 PMA width, so it needs four streams.
- See the following "Hard IP Fractures and Streams" figures.
- In 400G hard IP, Stream0-Stream15 map to EMIB_23-EMIB_8, respectively.
- In 200G hard IP, Stream0-Stream7 map to EMIB_7-EMIB_0, respectively.
<st as an abbreviation of stream>_x<number of streams in the fracture>_<index number>
For example, the st_x2_2 fracture combines two streams of up to 32 Gbps data for index number two.
Each fracture in 400G hard IP includes MAC, PCS, and FEC. Each fracture in 200G hard IP includes a PCS and FEC. 400G hard IP is a superset of 200G hard IP. If you need MAC or require bandwidth greater than 200 Gbps, use 400G hard IP. See PMA Data Rates for supported data rates.
Fracture Type | 400G Hard IP (MAC, PCS, and FEC) | 200G Hard IP (PCS and FEC) | Example Protocols | ||
---|---|---|---|---|---|
Number of Fractures (n) | Number of Streams and EMIBs per Fracture | Number of Fractures (n) | Number of Streams and EMIBs per Fracture | ||
st_x1 | 16 | 1 | 8 | 1 | 9.8 Gbps PMA Direct 10GbE-1 IEEE Ethernet 25GbE-1 IEEE Ethernet 16G Fibre Channel 32G Fibre Channel |
st_x2 | 8 | 2 | 4 | 2 | 50GbE-1 and 50GbE-2 IEEE Ethernet 50GbE-1 and 50GbE-2 Ethernet Technology Consortium 64G Fibre Channel |
st_x4 | 4 | 4 | 2 | 4 | 40GbE-4 IEEE Ethernet 100GbE-1, 100GbE-2, and 100GbE-4 IEEE Ethernet 100GbE-2 Ethernet Technology Consortium 300G Interlaken with RS-FEC 128G Fibre Channel |
st_x8 | 2 | 8 | 1 | 8 | 200GbE-2, 200GbE-4, and 200GbE-8 IEEE Ethernet 200GbE-4 Ethernet Technology Consortium |
st_x16 | 1 | 16 | N/A | N/A | 400GbE-4 IEEE Ethernet 400GbE-8 Ethernet Technology Consortium 400G FlexO |
Configuration | MAC (400G hard IP only) |
PCS (no 8b/10b) |
FEC | PMA | Example Protocols |
---|---|---|---|---|---|
Supported by 400G Hard IP | |||||
Full hard IP (with MAC) | Yes | Yes | Optional | FHT or FGT | Ethernet |
Supported by 400G Hard IP and 200G Hard IP | |||||
PCS Direct | Not used | Yes | Optional | FHT or FGT for 400G Hard IP FGT for 200G Hard IP |
Common Public Radio Interface (CPRI) 24G |
FlexE | Not used | Yes (64b/66b encoder/decoder bypass) | Optional | FHT or FGT for 400G Hard IP FGT for 200G Hard IP |
FlexE |
Open Transport Network (OTN) | Not used | Yes (64b/66b encoder/decoder and scrambler bypass) | Optional | FHT or FGT for 400G Hard IP FGT for 200G Hard IP |
OTN |
FEC Direct | Not used | Not used | Yes | FHT or FGT for 400G Hard IP FGT for 200G Hard IP |
Interlaken 300G-6, 32G Fibre Channel, 64G Fibre Channel |
PMA Direct | Not used | Not used | Not used | FHT or FGT for 400G Hard IP FGT for 200G Hard IP |
CPRI (low data rate), high-definition multimedia interface (HDMI), serial digital interface (SDI), JESD204B/C |
400G hard IP and 200G hard IP can use various fracture combinations. Using a fracture makes the fractures to its right and left that share the same stream unavailable. For example, for 400G hard IP, the st_x8_0 and st_x16_0 fractures share eight streams (Stream0-Stream7), and the st_x2_0 and st_x8_0 fractures share two streams (Stream0-Stream1).
Therefore, using st_x8_0 in 400G hard IP makes the following fractures unavailable:
- st_x16_0
- st_x4_0
- st_x4_1
- st_x2_0 - st_x2_3
- st_x1_0 - st_x1_7
And, using st_x2_0 in 200G hard IP makes the following fractures unavailable:
- st_x8_0
- st_x4_0
- st_x1_1
- st_x1_0