FortiGate 3400E and 3401E fast path architecture
The FortiGate 3400E and 3401E each include six NP6 processors (NP6_0 to NP6_5). All front panel data interfaces and all of the NP6 processors connect to the integrated switch fabric (ISF). All data traffic passes from the data interfaces through the ISF to the NP6 processors. Because of the ISF, all supported traffic passing between any two data interfaces can be offloaded by the NP6 processors. No special mapping is required for fast path offloading or aggregate interfaces. Data traffic processed by the CPU takes a dedicated data path through the ISF and an NP6 processor to the CPU.
The FortiGate 3400E and 3401E models feature the following front panel interfaces:
- Two 10/100/1000BASE-T Copper (MGMT1 and MGMT2).
- Two 10/25 GigE SFP+/SFP28 (HA1 and HA2, not connected to the NP6 processors).
- Twenty-two 1/10/25 GigE SFP/SFP+/SFP28 (1 to 22), interface groups: HA1 - HA2 - 1 - 2, 3 - 6, 7 - 10, 11 - 14, 15 - 18, and 19 - 22.Every time you change the speed of one of these interfaces from 25Gbps to 10Gbps or 1Gbps or from 10Gbps or 1Gbps to 25Gbps the speeds of the other interfaces in the group also change to that speed. When you enter the
endcommand, the CLI confirms the range of interfaces affected by the change. - Four 100 GigE QSFP28 (23 to 26).
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The FortiGate-3400 and 3401 do not support auto-negotiation when setting interface speeds. Always set a specific interface speed. For example: config system interface edit port23 set speed {40000full | 100Gfull} end |
The MGMT interfaces are not connected to the NP6 processors. Management traffic passes to the CPU over a dedicated management path that is separate from the data path. You can also dedicate separate CPU resources for management traffic to further isolate management processing from data processing (see Dedicated management CPU).
The HA interfaces are also not connected to the NP6 processors. To help provide better HA stability and resiliency, the HA traffic uses a dedicated physical control path that provides HA control traffic separation from data traffic processing.
The separation of management and HA traffic from data traffic keeps management and HA traffic from affecting the stability and performance of data traffic processing.
You can use the following get command to display the FortiGate 3400E or 3401E NP6 configuration. You can also use the diagnose npu np6 port-list command to display this information.
get hardware npu np6 port-list
Chip XAUI Ports Max Cross-chip
Speed offloading
-------------------- ---- ------ ------- ----------
NP#0-5 0-3 port1 25000M Yes
NP#0-5 0-3 port2 25000M Yes
NP#0-5 0-3 port3 25000M Yes
NP#0-5 0-3 port4 25000M Yes
NP#0-5 0-3 port5 25000M Yes
NP#0-5 0-3 port6 25000M Yes
NP#0-5 0-3 port7 25000M Yes
NP#0-5 0-3 port8 25000M Yes
NP#0-5 0-3 port9 25000M Yes
NP#0-5 0-3 port10 25000M Yes
NP#0-5 0-3 port11 25000M Yes
NP#0-5 0-3 port12 25000M Yes
NP#0-5 0-3 port13 25000M Yes
NP#0-5 0-3 port14 25000M Yes
NP#0-5 0-3 port15 25000M Yes
NP#0-5 0-3 port16 25000M Yes
NP#0-5 0-3 port17 25000M Yes
NP#0-5 0-3 port18 25000M Yes
NP#0-5 0-3 port19 25000M Yes
NP#0-5 0-3 port20 25000M Yes
NP#0-5 0-3 port21 25000M Yes
NP#0-5 0-3 port22 25000M Yes
NP#0-5 0-3 port23 100000M Yes
NP#0-5 0-3 port24 100000M Yes
NP#0-5 0-3 port25 100000M Yes
NP#0-5 0-3 port26 100000M Yes
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