FortiGate–3700D normal latency fast path architecture
You can use the following command to turn off low latency mode for np6_0 and np6_1:
config system np6 edit np6_0
set low-latency-mode disable next
edit np6_1
set low-latency-mode disable end
You do not have to turn off low latency to both np6_0 and np6_1. If you turn off low latency to just one NP6, the other NP6 will still be mapped according to the normal con- figuration.
In addition to turning off low latency, entering these commands also changes how ports are mapped to NP6s. Port1 is now mapped to np6_0 and port 3 is not mapped to np6_1. The FortiGate-3700D has the following fastpath architecture:
l One 40Gb QSFP interface, port1, and four SFP+ 10Gb interfaces, port25 to port28 share connections to the first
NP6 processor (np6_0).
l One 40Gb QSFP interface, port3, and four SFP+ 10Gb interfaces, port29 to port32 share connections to the second
NP6 processor (np6_1).
l One 40Gb QSFP interface, port2 and ten SFP+ 10Gb interfaces, port5 to port14 share connections to the third NP6 processor (np6_2).
l One 40Gb QSFP interface, port4, and ten SFP+ 10Gb interfaces, port15 to port24 share connections to the fourth
NP6 processor (np6_3).
Integrated Switch Fabric
FortiASIC | FortiASIC | FortiASIC | FortiASIC |
NP6 | NP6 | NP6 | NP6 |
np6_2 | np6_3 | np6_0 | np6_1 |
|
System Bus
CP8 CP8
CP8 CP8
CP8 CP8
CPU
CP8 CP8
You can use the following get command to display the FortiGate-3700D NP6 configuration with low latency turned off for np6_0 and np6_1. The command output shows four NP6s named NP6_0, NP6_1, NP6_2, and NP6_3 and the interfaces (ports) connected to each NP6. 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
—— —- ——- —– ———- np6_0 0 port26 10G Yes
1 port25 10G Yes
2 port28 10G Yes
3 port27 10G Yes
0-3 port1 40G Yes
—— —- ——- —– ———- np6_1 0 port30 10G Yes
1 port29 10G Yes
2 port32 10G Yes
3 port31 10G Yes
0-3 port3 40G Yes
—— —- ——- —– ———- np6_2 0 port5 10G Yes
0 port9 10G Yes
0 port13 10G Yes
1 port6 10G Yes
1 port10 10G Yes
1 port14 10G Yes
2 port7 10G Yes
2 port11 10G Yes
3 port8 10G Yes
3 port12 10G Yes
0-3 port2 40G Yes
—— —- ——- —– ———- np6_3 0 port15 10G Yes
0 port19 10G Yes
0 port23 10G Yes
1 port16 10G Yes
1 port20 10G Yes
1 port24 10G Yes
2 port17 10G Yes
2 port21 10G Yes
3 port18 10G Yes
3 port22 10G Yes
0-3 port4 40G Yes
—— —- ——- —– ———-
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