User's Manual

Mobile WiMAX Indoor RAS SPI-2210 System Description/Ed.07

2.2.3 IP Processing Functions

IP QoS Function

Since the indoor SPI-2210 supports Differentiated Services (DiffServ), it can provide the

backhaul QoS in the communication with ACR.

It supports 8-class DiffServ and supports the mapping between the DiffServ service class

and the service class of the user traffic received from an MS. In addition, the indoor SPI-

2210 supports between Differentiated Services Code Point (DSCP) and 802.3 Ethernet

MAC service class.

Simultaneous Support of IPv4/IPv6

ACR communicates with the indoor SPI-2210 through the GRE tunnel and the backhaul IP

version between the indoor SPI-2210 and ACR is managed independently from the service

IP version for the MS.

Even if, therefore, IPv4 is used in backhaul between the indoor SPI-2210 and ACR, all of

IPv4, IPv6 and IPv4/IPv6 dual stack services can be supported.

Figure 2.1 IPv4/IPv6 Dual Stack Operation

IP Routing Function

Since the indoor SPI-2210 provides several Ethernet interfaces, it stores the routing table

with the information on the Ethernet interface to route IP packets. The routing table of the

indoor SPI-2210 is configured depending on operator’s setting and the configuration and

the setting of the routing table are similar to the standard setting of the router.

The indoor SPI-2210 supports the static routing configuration only and not the router

function for the traffic received from the outside. When the indoor SPI-2210 connects an

auxiliary device, it supports the IP packet routing function for the auxiliary device by using

Network Address Translation (NAT).

IPv4

IPv6

Dual Stack MS

(IPv4/IPv6)

IPv6 Network

IPv4 Network

Access Network

Dual Stack Processing

Gateway

Core Network

RAS