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Page 136 / 240 Scroll up to view Page 131 - 135
Chapter 8 Quality of Service (QoS)
Basic Home Station VDSL2 P8701T User’s Guide
136
5
5
3
011110
011100
011010
011000
<250
6
6
4
100110
100100
100010
100000
5
101110
101000
7
7
6
110000
111000
7
Table 45
Internal Layer2 and Layer3 QoS Mapping
PRIORITY
QUEUE
LAYER 2
LAYER 3
IEEE 802.1P USER
PRIORITY
(ETHERNET
PRIORITY)
TOS (IP
PRECEDENCE)
DSCP
IP PACKET
LENGTH (BYTE)
Page 137 / 240
Basic Home Station VDSL2 P8701T User’s Guide
137
C
HAPTER
9
Routing
9.1
Overview
The VDSL Router usually uses the default gateway to route outbound traffic from computers on the
LAN to the Internet. To have the VDSL Router send data to devices not reachable through the
default gateway, use static routes.
For example, the next figure shows a computer (
A
) connected to the VDSL Router’s LAN interface.
The VDSL Router routes most traffic from
A
to the Internet through the VDSL Router’s default
gateway (
R1
). You create one static route to connect to services offered by your ISP behind router
R2
. You create another static route to communicate with a separate network behind a router
R3
connected to the LAN.
Figure 50
Example of Routing Topology
9.1.1
What You Can Do in this Chapter
•
Use the
Default Gateway
screen to select WAN interfaces to serve as system default gateways
(
Section 9.2 on page 138
).
•
Use the
Static Route
screen to view and set up static routes on the VDSL Router (
Section 9.3 on
page 138
).
•
Use the
Policy Forwarding
screen to configure policy routing on the Device (
Section 9.4 on
page 140
).
•
Use the
RIP
screen to configure RIP settings (
Section 9.5 on page 141
).
WAN
R1
R2
A
R3
LAN
Page 138 / 240
Chapter 9 Routing
Basic Home Station VDSL2 P8701T User’s Guide
138
9.2
The Default Gateway Screen
Click
Wireless network > Classic configuration > Advanced Setup > Routing > Default
Gateway
to open the
Default Gateway
screen. Use this screen to select WAN interfaces to serve
as system default gateways.
Figure 51
Default Gateway
Move the WAN interfaces to serve as system default gateways from
Available Routed WAN
Interfaces
to
Selected Default Gateway Interfaces
.
Use the
Selected WAN Interface
field to select the preferred WAN interface to server as the VDSL
Router’s default IPv6 gateway.
Click
Apply/Save
to save your changes.
9.3
The Static Route Screen
Use this screen to view and configure the static route rules on the VDSL Router. Click
Wireless
network > Classic configuration > Advanced Setup > Routing > Static Route
to open the
following
screen.
Page 139 / 240
Chapter 9 Routing
Basic Home Station VDSL2 P8701T User’s Guide
139
Figure 52
Static Route
The following table describes the labels in this screen.
9.3.1
Add Static Route
Use this screen to add a static route. Click
Add
in the
Static Route
screen to display the following
screen.
Figure 53
Static Route: Add
Table 46
Static Route
LABEL
DESCRIPTION
IP Version
This displays whether the entry uses IPv4 or IPv6.
DstIP/
PrefixLength
This specifies the IP network address and prefix length of the final destination. Routing is
always based on network number.
Gateway
This is the IP address of the gateway. The gateway is a router or switch on the same
network segment as the device's LAN or WAN port. The gateway helps forward packets to
their destinations.
Interface
This is the interface this static route uses to forward traffic for the listed destination
address.
Metric
The metric represents the "cost of transmission". A router determines the best route for
transmission by choosing a path with the lowest "cost". The smaller the number, the lower
the "cost".
Remove
Select entries and click the
Remove
button to delete them.
Add
Click this to configure a new static route.
Page 140 / 240
Chapter 9 Routing
Basic Home Station VDSL2 P8701T User’s Guide
140
The following table describes the labels in this screen.
9.4
The Policy Routing Screen
Traditionally, routing is based on the destination address only and the VDSL Router takes the
shortest path to forward a packet. Policy routing allows the VDSL Router to override the default
routing behavior and alter the packet routing based on the policy defined by the network
administrator. Policy-based routing is applied to outgoing packets, prior to the normal routing.
You can use source-based policy routing to direct traffic from different users through different
connections or distribute traffic among multiple paths for load sharing.
Use the
Policy Routing
screen to view and configure routing policies on the VDSL Router. Click
Wireless network > Classic configuration > Advanced Setup > Routing > Policy Routing
to open the
following
screen.
Figure 54
Policy Routing
The following table describes the labels in this screen.
Table 47
Static Route: Add
LABEL
DESCRIPTION
IP Version
Select whether your IP type is
IPv4
or
IPv6
.
Destination IP
address/prefix
length
Enter the IPv4 or IPv6 address and network length of the final destination.
Interface
Select the interface through which this static route sends traffic.
Gateway IP
Address
Enter the IP address of the gateway when you configure a static route that uses an IP-based
interface (such as IPoE, IPoA, or LAN). The gateway is a router or switch on the same
network segment as the device's LAN or WAN port. The gateway helps forward packets to
their destinations.
Apply/Save
Click this button to save your changes.
Table 48
Policy Routing
LABEL
DESCRIPTION
Policy Name
This displays the name of the rule.
Source IP
This displays the source IP address.
LAN Port
This displays the source LAN port number.
WAN
This displays the WAN interface through which the traffic is routed.
Default GW
This displays the default gateway IP address the route uses.
Remove
Select entries and click the
Remove
button to delete them.
Add
Click this to create a new policy routing rule.

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