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For the mapping of an application to its class-of-service, see
Table 53
.
The DiffServ parameters are described in
Table 35
.
VLANS and Multiple IPs
Multiple IPs
Media, Control, and Management (OAM) traffic in the gateway can be assigned one of the
following IP addressing schemes:
Single IP address for all traffic (that is, Media, Control, and OAM).
Separate IP address for each traffic type.
For separate IP addresses, the different traffic types are separated into three dedicated
networks. Instead of a single IP address, the gateway is assigned three IP addresses
and subnet masks, each relating to a different traffic type. This architecture enables
users to integrate the gateway into a three-network environment that is focused on
security and segregation. Each entity in the gateway (for example, Web and RTP) is
mapped to a single traffic type (according to
Table 53
) in which it operates.
Two separate IP addresses (Dual IP mode)--one for a specific traffic type and the other
for a combination of two traffic types.
In Dual IP mode, the gateway is assigned two IP addresses for the different traffic types.
One IP address is assigned to a combination of two traffic types (Media and Control,
OAM and Control, or OAM and Media), while the other IP address is assigned to
whichever traffic type that is not included in this combination. For example, a typical
scenario using this mode would include one IP address assigned for Control and OAM,
and another IP address assigned for Media.
•
A default gateway is supported only for the Media traffic type; for the other
two, use the IP Routing table.
•
The IP address and subnet mask used in the Single IP Network mode are
carried over to the OAM traffic type in the Multiple IP Network mode.
For detailed information on integrating the V7122 into a VLAN and multiple IPs network, see
Getting Started with VLANS and Multiple IPs
. For detailed information on configuring the
multiple IP parameters, see
Table 35
.
IEEE 802.1p/Q (VLANs and Priority)
The Virtual Local Area Network (VLAN) mechanism enables the gateway to be integrated
into a VLAN-aware environment that includes switches, routers and endpoints.
When in VLAN-enabled mode, each packet is tagged with values that specify its priority
(class-of-service) (IEEE 802.1p) and the identifier (traffic type) of the VLAN to which it
belongs (media, control or management) (IEEE 802.1Q).
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