Using Interface Configuration Mode - Cisco WS-C3560-48PS-S Software Configuration Manual

Using Interface Configuration Mode

Figure 10-2 Connecting VLANs with the Catalyst 3560 Switch
172.20.128.1
When the EMI is running on the switch, the switch supports two methods of forwarding traffic between
interfaces: routing and fallback bridging. If the SMI is on the switch, only basic routing (static routing
and RIP) is supported. Whenever possible, to maintain high performance, forwarding is done by the
switch hardware. However, only IP version 4 packets with Ethernet II encapsulation can be routed in
hardware. Non-IP traffic and traffic with other encapsulation methods can be fallback-bridged
by hardware.
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Using Interface Configuration Mode
The switch supports these interface types:
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You can also configure a range of interfaces (see the
page
Catalyst 3560 Switch Software Configuration Guide
10-6
with routing enabled
SVI 1
Host A
VLAN 20
The routing function can be enabled on all SVIs and routed ports. The switch routes only IP traffic.
When IP routing protocol parameters and address configuration are added to an SVI or routed port,
any IP traffic received from these ports is routed. For more information, see
"Configuring IP Unicast Routing," Chapter 32, "Configuring IP Multicast Routing,"
Chapter 33, "Configuring MSDP."
Fallback bridging forwards traffic that the switch does not route or traffic belonging to a nonroutable
protocol, such as DECnet. Fallback bridging connects multiple VLANs into one bridge domain by
bridging between two or more SVIs or routed ports. When configuring fallback bridging, you assign
SVIs or routed ports to bridge groups with each SVI or routed port assigned to only one bridge
group. All interfaces in the same group belong to the same bridge domain. For more information,
see Chapter 34, "Configuring Fallback Bridging."
Physical ports—including switch ports and routed ports
VLANs—switch virtual interfaces
Port-channels—EtherChannel of interfaces
10-8).
Layer 3 switch
SVI 2
VLAN 30
"Configuring a Range of Interfaces" section on
Chapter 10 Configuring Interface Characteristics
172.20.129.1
Host B
Chapter 30,
and
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