Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
37-6
Cisco AsyncOS 9.5 for Email User Guide
Chapter 37 Advanced Network Configuration
Virtual Local Area Networks (VLANs)
Virtual Local Area Networks (VLANs)
You can configure multiple virtual local area networks (VLANs) on any physical network port on the
appliance.
appliance.
You can use VLANs to:
•
increase the number of networks the appliance can connect to beyond the number of physical
interfaces on the appliance.
interfaces on the appliance.
•
allow more networks to be defined on separate “ports” on existing listeners.
•
segment networks for security purposes, to ease administration, or increase bandwidth.
Example use case:
Two mail servers that are unable to communicate directly due to VLAN limitations can send mail
through the Email Security appliance. The Data 2 interface on the appliance is configured with VLAN1
and VLAN2. The blue line shows mail coming from the sales network (VLAN1) to the appliance. The
appliance processes the mail as normal and then, upon delivery, tags the packets with the destination
VLAN2 information (red line).
through the Email Security appliance. The Data 2 interface on the appliance is configured with VLAN1
and VLAN2. The blue line shows mail coming from the sales network (VLAN1) to the appliance. The
appliance processes the mail as normal and then, upon delivery, tags the packets with the destination
VLAN2 information (red line).
Choose the operation you want to perform:
- DELETE - Delete a pairing.
- STATUS - Refresh status.
[]>