Unlike other network modules, the C3850-NM-8-10G cannot be fully inserted and secured until
the jackscrew is properly tightened.
1.
Push the module into the uplink slot until the jackscrew connects with the rightmost tab.
2.
You will feel some light resistance, because a spring-loaded tab inside the slot will push back
against the C3850-NM-8-10G module
3.
Continue to tighten the jackscrew while gently pushing the front panel of the network module
into the slot.
Note
Network Module Port Configurations
C3850-NM-4-1G Module
All ports in the C3850-NM-4-1G module are natively GigabitEthernet and are configured GigabitEthernet1/1/1
though GigabitEthernet1/1/4. There are only four interfaces that are valid, and the other four should not be
used even though they still show up in the CLI.
Table 20: C3850-NM-4-1G Module
Action
Interface
Configure this interface
GigabitEthernet1/1/1
Configure this interface
GigabitEthernet1/1/2
Configure this interface
GigabitEthernet1/1/3
Configure this interface
GigabitEthernet1/1/4
Disregard
TenGigabitEthernet1/1/1
Disregard
TenGigabitEthernet1/1/2
Disregard
TenGigabitEthernet1/1/3
Disregard
TenGigabitEthernet1/1/4
C3850-NM-4-10G Module
All ports in the C3850-NM-4-10G module default to 10 G and should be configured as TenGigabitEthernet1/1/1
through TenGigabitEthernet1/1/4, even when you are operating them as 1 G using SFPs. Only four interfaces
are valid; the other four should not be used even though they still show up in the CLI.
Table 21: C3850-NM-4-10G Module
Action
Interface
Disregard
GigabitEthernet1/1/1
Disregard
GigabitEthernet1/1/2
Catalyst 3850 Switch Hardware Installation Guide
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Installing a Network Module
Network Module Port Configurations
