Amer Networks SS2R48G4i V2 - Manual (Page 196)

SS2R24G4i/SS2R48G4i
185
Chapter 23 Layer 3 Configuration
SS2R24/48G4i switch switch only supports layer 2 forwarding function. But, we can configure a
layer3 control port. On the interface of this port we can configure IP addresses used in communication
of various IP-based control protocols.
23.1 Layer3 Interface
23.1.1 Introduction to Layer3 Interface
Layer3 interface can be created on SS2R24/48G4i switch. Layer3 interface is not physical interface but
a virtual interface. Layer3 interface is built on VLAN. Layer3 interface can contain one or more layer2
interface of the same VLAN, or no layer2 interfaces. At least one of Layer2 interfaces contained in
Layer3 interface should be in UP state for Layer3 interface in the UP state, otherwise, Layer3 interface
will be in the DOWN state. All layer3 interface in the switch use the same MAC address, this address is
selected from the reserved MAC address on creating Layer3 interface. Layer3 interface is the base for
layer3 protocols. The switch can use the IP address set in layer3 interface to communicate with the
other devices via IP. The switch can forward IP packets between different Layer3 interfaces.
23.1.2 Layer3 interface configuration
23.1.2.1 Layer3 Interface Configuration Task Sequence
1. Create Layer3 Interface
2. Set the default gateway address of the switch
1.Create Layer3 Interface
2. Set the default gateway address of the switch
Command Explanation
Global Mode
interface vlan <vlan-id>
no interface vlan <vlan-id>
Create a VLAN interface (VLAN interface is
a Layer3 interface); the “no interface vlan
<vlan-id>
” command deletes the VLAN
interface (Layer3 interface) created in the
switch.
Global Mode
ip route 0.0.0.0 0.0.0.0 <gateway>
no ip route 0.0.0.0 0.0.0.0 <gateway>
Set the default gateway address of the
switch; prefixing this command with “no”