Redline Communications Inc. AN80IC 用户手册

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70-00072-01-05-DRAFT 

 

Page 49 of 94 

January 22, 2008 

any 

Group

. Only one pass-through 

Group

 can be defined for each sector controller. If a 

pass-through 

Group

 is not configured, all untagged packets received at the sector 

controller Ethernet ingress port are discarded.  
Packet received at sector controller Ethernet interface: The packet is forwarded 
unmodified over the wireless to all subscribers in this 

Group

. 

Packet received at sector controller wireless interface (from subscriber): The packet is 
forwarded unmodified over the wireless to all subscribers in this 

Group

.  

If the sector controller Ethernet port is enabled, the packet is also forwarded to the 
sector controller Ethernet port. 

Group VLAN ID: Enter the VID associated with this 

Group

 definition. 

This field is used only when 'Tagged' is selected in the 

Group

 Tagging Mode field. 

Default Priority: Enter the default 802.1p priority setting. 
The default priority setting is used only when the 

Group

 

Tagging Mode

 is set to 'pass-

through' mode and the associated 

Connection

 

Tagging Mode

 is set to 'Tagged'. The 

Group

 

Default Priority value is used when adding the 802.1Q tag (

Connection

 VLAN ID) to the 

packet being forwarded. 

SC Ethernet Enable: Controls the sector controller Ethernet port. 
Check this box   to allow ingress and egress data traffic on the sector controller Ethernet 
interface. Uncheck this box ( ) to block all data traffic on the sector controller Ethernet 
interface. The sector controller Ethernet port remains available for management traffic. 

SS To SS Multicast Enable:  
Check this box   to enable group multicast traffic between subscribers. 
Uncheck this box ( ) to block all multicast traffic between subscribers. 

Changes to these settings affect the CIR and PIR for all groups and connections on the 
wireless link. 

Group QoS Level: This setting represents the range of CIR available to 

Group

 members 

for downlink multicast/broadcast traffic.  
It is strongly recommended to calculate the 

Group QoS Level

 using the Redline AN-80i 

PMP Configuration Tool -- the 

Group QoS level

 can be read from the 

QoS

 column in the 

Group ID Configuration

 section. To manually determine this setting, identify the member 

Link

 having the lowest UBR and calculate the 

Group QoS Level

 using the formula: 

Burst 

Rate - 1

. A zero setting disables all DL broadcast and multicast traffic for this group. 

Rate: Enter the maximum downlink burst rate for this 

Group

. 

It is recommended to use the 'auto' setting where the AN-80i selects the most reliable 
rate. To manually determine this value, identify the 

Group

 member having the lowest DL 

burst rate, and then set the 

Rate

 using the formula: 

Max DL Burst Rate - 1

. For applications 

requiring a higher broadcast/multicast rate (e.g., video), a higher setting can be used at 
the risk of less reliable retransmissions.