Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Cisco AsyncOS 9.5 for Email User Guide
 
Chapter 37      Advanced Network Configuration
  Virtual Local Area Networks (VLANs)
Figure 37-1
Using VLANs to Facilitate Communication Between Appliances
About Configuring VLANs 
You can configure multiple VLANs on any physical network port on the appliance, including “Data” and 
“Management” ports and the fiber optic data ports available on some appliance models. AsyncOS 
supports up to 30 VLANs. 
A physical port does not need an IP address configured in order to be in a VLAN. The physical port on 
which a VLAN is created can have an IP that will receive non-VLAN traffic, so you can have both VLAN 
and non-VLAN traffic on the same interface.
VLANs can be used with NIC pairing (available on paired NICs) and with Direct Server Return (DSR). 
VLANs appear as dynamic “Data Ports” labeled in the format of: “VLAN DDDD” where the “DDDD” 
is the ID and is an integer up to 4 digits long (VLAN 2, or VLAN 4094 for example). VLAN IDs must 
be unique on your appliance. 
Related Topics
 
Managing VLANs
You can create, edit and delete VLANs via the 
etherconfig
 command. Once created, a VLAN can be 
configured via the Network > Interfaces page or the 
interfaceconfig
 command in the CLI. Remember 
to commit all changes. 
Appliance configured 
VLAN
“Switch” 
Internet
 “Router”
or
Data 2 interface
Sales server
Finance server
VLAN1
VLAN2
VLAN3
for VLAN1, VLAN2, VLAN3