ZyXEL Communications IES-612-51A - Manual (Page 131)

Chapter 14 xDSL Profiles Setup
IES-612-51A User’s Guide
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Traffic shaping must also be enabled on the subscriber's device in order to use
upstream policing.
Note that since the IES-612-51A uses ATM QoS, if the subscriber device's upstream shaping
rate is larger than the IES-612-51A's upstream policing rate, some ATM cells will be
discarded. In the worst case, none of the Ethernet packets from the CPE will be able to be
reassembled from AAL5, so no packets from the subscriber's device can be received by the
IES-612-51A.
The upstream policing feature can be enabled/disabled per PVC. No matter which ATM traffic
class is used for the PVC's upstream traffic (CBR, VBR, or UBR), the IES-612-51A will drop
any upstream traffic that violates the specified ATM VC profile.
14.5 VC Profile Screen
To open this screen, click Basic Setting, xDSL Profiles Setup, VC Profile.
Figure 58 VC Profile
The following table describes the labels in this screen.
Table 26 VC Profile
LABEL DESCRIPTION
Port Profile Click Port Profile to configure port profiles and assign them to individual ports
(see
Section 14.1 on page 125 ).
Alarm Profile Click Alarm Profile to open the Alarm Profile screen where you can configure
limits that trigger an alarm when exceeded (see
Section 14.6 on page 133 )
IGMP Filter Profile Click IGMP Filter Profile to open the IGMP Filter Profile screen where you can
configure IGMP multicast filter profiles (see
Section 14.8 on page 135 ).
Index This is the number of the VC profile.
Name This name identifies the VC profile.
Encap This field displays the profile’s type of encapsulation (llc or vc).