User's Manual

Configuring Networking
Configuring the Local Area Network (LAN)
Cisco RV 120W Administration Guide 39
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the ISP, excluding the DNS Proxy IP address when it is disabled. The feature is
useful for an “auto rollover” configuration. For example, if the DNS servers for each
connection are different, then a link failure can render the DNS servers
inaccessible. However, when the DNS proxy is enabled, then clients can make
requests to the router and the router, in turn, sends those requests to the DNS
servers of the active connection.
STEP 3 Click S
Save
.
Configuring Virtual LANs (VLANs)
A VLAN is a group of endpoints in a network that are associated by function or
other shared characteristics. Unlike LANs, which are usually geographically based,
VLANs can group endpoints without regard to the physical location of the
equipment or users.
Enabling VLANs
STEP 1 Choose N
Networking
> L
LAN
> V
VLAN Configuration
.
STEP 2 Check the E
Enable
box.
STEP 3 Click S
Save
.
Underneath the Enable VLAN field, a list of available VLANs is shown, including the
name, ID, and whether inter-VLAN routing is enabled or not for each configured
VLAN.
Creating a VLAN
STEP 1 Choose N
Networking
> L
LAN
> V
VLAN Configuration
.
STEP 2 Click A
Add
.
STEP 3 Enter a name to identify the VLAN.
STEP 4 Enter a numerical VLAN ID that will be assigned to endpoints in the VLAN
membership. The VLAN ID can range from 2 to 4094. VLAN ID 1 is reserved for the
default VLAN, which is used for untagged frames received on the interface, and
VLAN ID 4092 is reserved and cannot be used.