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Page 146 / 320 Scroll up to view Page 141 - 145
Chapter 10 Quality of Service (QoS)
AMG1302/AMG1202-TSeries User’s Guide
146
Mac Netmask
Type the mask for the specified MAC address to determine which bits a packet’s MAC
address should match.
Enter “f” for each bit of the specified source MAC address that the traffic’s MAC address
should match. Enter “0” for the bit(s) of the matched traffic’s MAC address, which can be
of any hexadecimal character(s). For example, if you set the MAC address to
00:13:49:00:00:00 and the mask to ff:ff:ff:00:00:00, a packet with a MAC address of
00:13:49:12:34:56 matches this criteria.
Exclude
Select this option to exclude the packets that match the specified criteria from this
classifier.
Others
IP Protocol
This field is available only when you select
IPv4 or IPv6
in the
Ether Type
field.
If you select
IPv4
, select this option and select the protocol (service type) from
TCP/
UDP
,
TCP
,
UDP
or
ICMP
.If you select
IPv6
, select this option and select the protocol
(service type) from
TCP/UDP
,
TCP
,
UDP
or
ICMPv6
.
TCP ACK
This field is available only when you select
TCP
in the
IP protocol
field.
If you select this option, the matched TCP packets must contain the ACK (Acknowledge)
flag.
Packet Length
This field is available only when you select
IPv4 or IPv6
in the
Ether Type
field.
Select this option and enter the minimum and maximum packet length (from 46 to 1500)
in the fields provided.
IPP/DS Field
Select
IPP/TOS
to specify an IP precedence range and type of services.
Select
DSCP
to specify a DiffServ Code Point (DSCP) range.
IP Precedence
Range
Enter a range from 0 to 7 for IP precedence. 0 is the lowest priority and 7 is the highest.
Type of
Service
Select a type of service from the drop-down list box.
Available options are:
Normal service
,
Minimize delay
,
Maximize throughput
,
Maximize reliability
and
Minimize monetary cost
.
DSCP Range
Select this option and specify a DSCP (DiffServ Code Point) number between 0 and 63 in
the field provided.
802.1P
Select this option and select a priority level (between 0 and 7) from the drop-down list
box.
"0" is the lowest priority level and "7" is the highest.
VLAN ID
Select this option and enter the source VLAN ID in this field.
Exclude
Select this option to exclude the packets that match the specified criteria from this
classifier.
Action
Forward To
Select the interface through which traffic that matches the rule is forwarded out.
If you
select
Unchange
, the AMG1302/AMG1202-TSeries forwards traffic of this class according
to the default routing table.
If traffic of this class comes from a WAN interface and is in a queue that forwards traffic
through the LAN/WLAN interface, the AMG1302/AMG1202-TSeries ignores the setting
here.
IPP/DS Field
Select
IPP/TOS
to specify an IP precedence range and type of services.
Select
DSCP
to specify a DiffServ Code Point (DSCP) range.
Table 44
QoS > Class Setup Add/Edit (continued)
LABEL
DESCRIPTION
Page 147 / 320
Chapter 10 Quality of Service (QoS)
AMG1302/AMG1202-TSeries User’s Guide
147
10.5
The QoS Game List Screen
Use this screen to give priority to traffic for specific games. Click
Network Setting > QoS > Game
List
to open the screen as shown next.
Figure 65
Network Setting > QoS > Game List
IP Precedence
Mark
Enter a range from 0 to 7 to re-assign IP precedence to matched traffic. 0 is the lowest
priority and 7 is the highest.
Type Of
Service Mark
Select a type of service to re-assign the priority level to matched traffic.
Available options are:
Normal service
,
Minimize delay
,
Maximize throughput
,
Maximize reliability
and
Minimize monetary cost
.
DSCP
Mark(0~63)
This field is available only when you select
IP
in the
Ether Type
field.
If you select
Mark
, enter a DSCP value with which the AMG1302/AMG1202-TSeries
replaces the DSCP field in the packets.
If you select
Unchange
, the AMG1302/AMG1202-TSeries keep the DSCP field in the
packets.
802.1Q Tag
If you select
Remark
, select a priority level (in the
Ethernet Priority
field) and enter a
VLAN ID number (in the
VLAN ID
field) with which the AMG1302/AMG1202-TSeries
replaces the IEEE 802.1p priority field and VLAN ID of the frames.
If you select
Remove
, the AMG1302/AMG1202-TSeries deletes the VLAN ID of the
frames before forwarding them out.
If you select
Add
, the AMG1302/AMG1202-TSeries treat all matched traffic untagged and
add a second priority level and VLAN ID that you specify in the
Ethernet Priority
and
VLAN ID
fields.
If you select
Same
, the AMG1302/AMG1202-TSeries keep the Ethernet Priority and VLAN
ID in the packets.
To configure the Ethernet Priority, you can either select a priority number in the first
drop-down list box (7 is the highest and 0 is the lowest priority) or select an application
from the second drop-down list box which automatically maps to the corresponding
priority number. (Key Net Traffic: 7; Voice: 6; Video: 5;IGMP: 4; Key Data: 3)
OK
Click
OK
to save your changes.
Cancel
Click
Cancel
to exit this screen without saving.
Table 44
QoS > Class Setup Add/Edit (continued)
LABEL
DESCRIPTION
Page 148 / 320
Chapter 10 Quality of Service (QoS)
AMG1302/AMG1202-TSeries User’s Guide
148
The following table describes the labels in this screen.
10.6
QoS Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
10.6.1
IEEE 802.1p
IEEE 802.1p specifies the user priority field and defines up to eight separate traffic types. The
following table describes the traffic types defined in the IEEE 802.1d standard (which incorporates
the 802.1p).
10.6.2
IP Precedence
Similar to IEEE 802.1p prioritization at layer-2, you can use IP precedence to prioritize packets in a
layer-3 network. IP precedence uses three bits of the eight-bit ToS (Type of Service) field in the IP
header. There are eight classes of services (ranging from zero to seven) in IP precedence. Zero is
the lowest priority level and seven is the highest.
Table 45
Network Setting > QoS > Game List
LABEL
DESCRIPTION
Enable Game List
Select this to have QoS give the highest priority to traffic for the games you specify. This
priority is higher than the other QoS queues.
Select the games below.
Apply
Click this to save your changes.
Cancel
Click this to restore previously saved settings.
Table 46
IEEE 802.1p Priority Level and Traffic Type
PRIORITY
LEVEL
TRAFFIC TYPE
Level 7
Typically used for network control traffic such as router configuration messages.
Level 6
Typically used for voice traffic that is especially sensitive to jitter (jitter is the variations in
delay).
Level 5
Typically used for video that consumes high bandwidth and is sensitive to jitter.
Level 4
Typically used for controlled load, latency-sensitive traffic such as SNA (Systems Network
Architecture) transactions.
Level 3
Typically used for “excellent effort” or better than best effort and would include important
business traffic that can tolerate some delay.
Level 2
This is for “spare bandwidth”.
Level 1
This is typically used for non-critical “background” traffic such as bulk transfers that are allowed
but that should not affect other applications and users.
Level 0
Typically used for best-effort traffic.
Page 149 / 320
Chapter 10 Quality of Service (QoS)
AMG1302/AMG1202-TSeries User’s Guide
149
10.6.3
Automatic Priority Queue Assignment
If you enable QoS on the AMG1302/AMG1202-TSeries, the AMG1302/AMG1202-TSeries can
automatically base on the IEEE 802.1p priority level, IP precedence and/or packet length to assign
priority to traffic which does not match a class.
The following table shows you the internal layer-2 and layer-3 QoS mapping on the AMG1302/
AMG1202-TSeries. On the AMG1302/AMG1202-TSeries, traffic assigned to higher priority queues
gets through faster while traffic in lower index queues is dropped if the network is congested.
Table 47
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)
0
1
0
000000
1
2
2
0
0
000000
>1100
3
3
1
001110
001100
001010
001000
250~1100
4
4
2
010110
010100
010010
010000
5
5
3
011110
011100
011010
011000
<250
6
6
4
100110
100100
100010
100000
5
101110
101000
7
7
6
110000
111000
7
Page 150 / 320
Chapter 10 Quality of Service (QoS)
AMG1302/AMG1202-TSeries User’s Guide
150

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