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iConnect625W ADSL/ADSL2+ Router User Guide
111
Field
Description
Local Routing Mark
This field is enabled only when
Locally generated
is selected
in the
Ingress Interface
field. The mark for DNS traffic
generated by different applications are described below:
²
Dynamic DNS: 0xE1
²
Dynamic Proxy: 0xE2
²
Web Server: 0xE3
²
MSNTP: 0xE4
²
DHCP Server: 0xE5
²
IP tables Utility: 0xE6
²
PPP Daemon: 0xE7
²
IP Route: 0xE8
²
ATM Library: 0xE9
²
Net Tools: 0xEA
²
RIP: 0xEB
²
RIP v2: 0xEC
²
UPnP: 0xEE
²
Busybox Utility: 0xEF
²
Configuration Manager: 0xF0
²
DropBear Utility: 0xF1
²
Voice: 0
Destination Information
Destination Interface
The outgoing traffic interfaces for a Policy Database rule. The
options include
LAN Interfaces
and
WAN Interfaces
.
Class of Service
The selections for CoS in order of descending priority are:
CoS1, CoS2,
CoS3, CoS4, CoS5, CoS6
and
N/A,
where
CoS6 has the lowest priority
.
Destination IP
The IP address of the traffic destination.
Mask
The netmask for the destination. This field is required if the
destination IP field has been populated.
Destination Port
This is the destination protocol or port range. Similar to the
source port, you cannot configure this field without entering
the protocol first.
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8.15
Ingress
Ingress enables you to configure QoS for packets as soon as they come into the router.
The domain mappings are converted to CoS (Class of Service) so that priority marking is
carried over.
There are four Ingress modes:
±
Untrusted mode
±
Layer 2
±
Layer 3
±
Static
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113
8.15.1
Untrusted Mode
Untrusted mode is the default Ingress page setting for all interfaces. In this mode, all
packets are treated as CoS6 (best effort).
To access and configure Untrusted Mode, follow the steps below.
Step 1
:
From the
Advanced
tab, click the
Ingress
link provided. The following page
appears:
Step 2:
Select the connection from the
Interface
drop-down list. The options will differ
depending on the connections you have created.
Step 3:
The
Ingress
Untrusted Mode
is the default setting for all the interfaces.
All interfaces that are not configured has the default Untrusted Mode.
Step 4:
If you wish to change from Layer 2 or Layer 3 modes to Untrusted Mode, select
the appropriate radio button and refer to the
Save / Restart Menu
section to
save the changes made.
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8.15.2
Ingress Layer 2
Layer 2 enables you to map an incoming packet with VLAN priority to CoS.
This feature
is only configurable on the WAN interfaces as VLAN is only supported on the WAN side.
To configure
Layer 2
, follow the steps below.
Step 1
:
From the
Ingress
screen, select the
WAN Interface
to configure the CoS
incoming traffic from the
Interface
drop-down list as shown below.
A maximum of 8 rules can be configured for each interface.
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Step 2:
Highlight the
Layer 2
radio option. The following page appears:
Step 3:
Select the
CoS
options from the
Class of Service
drop-down list as shown.
The selections are in order of
descending
priority, i.e. CoS6 has the lowest
priority.
For example, if you select
CoS1
for
Class of Service
field and
5
for
Priority Bits
field, this means that any packets that have a
User Priority
bit of
5
is mapped to
CoS1
- the highest priority. This is given to the high priority packets such as
video.
Alternatively, if you select
CoS2
in the
Class of Service
field and
1
in the
Priority
Bits
field, this meant that any packets that have a
User Priority
of 1 is mapped
to
CoS2
, the second highest priority. This is normally given to voice packets.
Step 4:
Select the priority from the
User Priority
drop-down list. The
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