7.8.1.0 - Force10 Networks

Configuring Layer 3 mode
By assigning an IP address to a physical interface, the interface is placed in Layer 3 mode. Routed traffic
now passes through the interface and the user can configure routing protocols on that interface.
To assign an IP address, use both of these commands in the INTERFACE mode:
Command Syntax Command Mode Purpose
no shutdown INTERFACE Enable the interface.
ip address ip-address mask [secondary] INTERFACE Configure a primary IP address and mask
on the interface. The ip-address must be
in dotted-decimal format (A.B.C.D) and
the mask must be in slash format (/xx).
Add the keyword secondary if the IP
address is the interface’s backup IP
address.
The user can only configure one primary IP address per interface. Up to 255 secondary IP addresses can be
saved on a single interface.
To view all interfaces to see which have an IP address assigned, use the show ip interfaces brief command
(Figure 176).
To view IP information on an interface in Layer 3 mode, use the show ip interface command in the EXEC
privilege mode (Figure 159).
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