Wendell odom

show interfaces g0/1 switchport
Name: Gi0/1
Switchport: Disabled
So, with two options—SVI and routed ports—where should you use each? 
For any topologies with a point-to-point link between two devices that do routing, a 
routed interface works well. 
Figure 17-5 shows an example of where to use SVIs and where to use routed ports in a typi-
cal core/distribution/access design. In this design, the core (Core1, Core2) and distribution 
(D11 through D14) switches perform Layer 3 switching. All the ports that are links directly 
between the Layer 3 switches can be routed interfaces. For VLANs for which many interfac-
es (access and trunk) connect to the VLAN, SVIs make sense because the SVIs can send and 
receive traffic out multiple ports on the same switch. In this design, all the ports on Core1 
and Core2 will be routed ports, while the four distribution switches will use some routed 
ports and some SVIs.
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410 CCNA 200-301 Official Cert Guide, Volume 1
A11
A12
A13
A14
A21
A22
A23
A24
Point-to-Point, Layer 3 Distribution & Core
Layer 2 Access: SVIs
D11
D12
D21
Core1
D22
Core2
Layer 2 Access: SVIs
Routed Interfaces
Figure 17-5
Using Routed Interfaces for Core and Distribution Layer 3 Links
Implementing Layer 3 EtherChannels
So far, this section has stated that routed interfaces can be used with a single point-to-point 
link between pairs of Layer 3 switches, or between a Layer 3 switch and a router. However, 
in most designs, the network engineers use at least two links between each pair of distribu-
tion and core switches, as shown in Figure 17-6.
A11
A12
A13
A14
A21
A22
A23
A24
Layer 2 Access: SVIs
D11
D12
D21
Core1
D22
Core2
Layer 2 Access: SVIs
Point-to-Point, Layer 3 Distribution & Core