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FIM-7920E interface module
NMI switch
When working with Fortinet Support to troubleshoot problems with the FIM-7920E you can use the front panel non-
maskable interrupt (NMI) switch to assist with troubleshooting. Pressing this switch causes the software to dump
registers/backtraces to the console. After the data is dumped the FIM-7920E reboots. While the FIM-7920E is
rebooting, traffic is temporarily blocked. The FIM-7920E should restart normally and traffic can resume once the it is up
and running.
FIM-7920E hardware architecture
The FIM-7920E includes an integrated switch fabric (ISF) that connects the front panel interfaces to the DP2 session-
aware load balancers and to the chassis backplanes. The ISF also allows the DP2 processors to distribute sessions
among all NP6 processors on the FPM modules in the same chassis.
The FIM-7920E also includes the following backplane communication channels:
One 80Gbps fabric backplane channel to distribute traffic to the FPMs.
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One 1Gbps base backplane channel for base backplane communication with the FPMs.
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One 40Gbps fabric backplane channel for fabric backplane communication with the other FIM.
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One 1Gbps base backplane channel for base backplane communication with the other FIM.
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FIM-7920E hardware architecture
FIM-7920E
CPU
FIM-7920E Processing Module Guide
Management
Heartbeat
(MGMT1-4)
(M1 M2)
DP2
1G
1G
Chassis Base Backplane
Integrated Switch Fabric
DP2
Data
(C1 - C4)
DP2
40G
Chassis Fabric Backplane
Fortinet Technologies Inc.
11
80G
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