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3Com
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VCX V7111 VoIP Gateway User Guide
Traffic type tagging can be used to implement Layer 2 VLAN security. By discriminating
traffic into separate and independent domains, the information is preserved within the VLAN.
Incoming packets received from an incorrect VLAN are discarded.
For the mapping of an application to its class-of-service and traffic type, see
Table 83
.
Media traffic type is assigned Premium media class of service, Management traffic type is
assigned Bronze class of service, and Control traffic type is assigned Premium control class
of service.
For example, RTP/RTCP traffic is assigned the Media VLAN ID and Premium media class of
service, whereas Web traffic is assigned the Management VLAN ID and Bronze class of
service. Each of these parameters can be configured with a 802.1p/q value: traffic type to
VLAN ID, and class of service to 802.1p priority.
•
As a safety measure, the VLAN mechanism is activated only when the gateway
is loaded from the flash memory. Therefore, when using BootP:
Load an ini file with VlanMode = 1 and SaveConfiguration = 1. Then (after the
gateway is active) reset the gateway with TFTP disabled, or by using any method
except for BootP.
•
The gateway must be connected to a VLAN-aware switch, and the switch's PVID
must be equal to the gateways native VLAN ID.
For information on how to configure VLAN parameters, see
Configuring the VLAN Settings
.
Table 83
Traffic / Network Types and Priority
Application
Traffic / Network Types
Class-of-Service (Priority)
Debugging interface
Management
Bronze
Telnet Management
Bronze
DHCP Management
Network
Web server (HTTP)
Management
Bronze
SNMP GET/SET
Management
Bronze
Web server (HTTPS)
Management
Bronze
IPSec IKE
Determined by the service
Determined by the service
RTP traffic
Media
Premium media
RTCP traffic
Media
Premium media
T.38 traffic
Media
Premium media
SIP Control
Premium
control
SIP over TLS (SIPS)
Control
Premium control
Summary of Contents for VCX V7111
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