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DES-7200 Configuration Guide Chapter 1 Interface Configuration
1-5
1.1.2.2 Routed Port
A routed port is a physical port, for example, a port on the layer 3 device. It can
be configured by using a layer 3 routing protocol. On the layer 3 device, a single
physical port can be set as a routed port that serves as the gateway interface
for layer 3 switching. A routed port serves as an access port that is not related to
a specific VLAN. A routed port provides no L2 switching function. You may
change an L2 switch port into a routed port by using the no switchport
command and then assign an IP address to it for routing purposes. Note that
using the no switchport command in the interface configuration mode will
close and restart this port and delete all the layer 2 features of this port.
Caution
However, when a port is a member port of an L2 aggregate port
or an unauthenticated DOT1x authentication port, the
switchport /no switchport command will not work.
1.1.2.3 L3 Aggregate Port
Just like a L2 aggregate port, a L3 aggregate port is a logically aggregated port
group that consists of multiple physical ports. The aggregated ports must be
layer 3 ports of the same type. For layer 3 switching, an AP that serves as the
gateway interface for layer 3 switching considers multiple physical links in the
same aggregate group as one logical link. This is an important method for
expanding link bandwidth. In addition, the frames that pass through the L3
aggregate port will undergo traffic balancing on the member ports of the L3
aggregate port. If one member link of AP fails, the L3 aggregate port
automatically assigns the traffic on this link to other working member links,
making the connection more reliable.
An L3 aggregate port offers no L2 switching functions. You may establish routes
by first changing an L2 aggregate port without members into an L3 aggregate
port using the no switchport command and then adding multiple routed ports
and assigning an IP address to it.
1.2 Configuring Interfaces
This section provides the default setting, guidelines, steps, and examples of
configuration.
1.2.1 Interface
Numbering
Rule
The number of a switch port consists of a slot number and the port number on
the slot. For example, the port number is 3 and the slot number is 2, the number
of the corresponding interface is 2/3. The slot number ranges from 0 to the total