ZyXEL Communications OLT2406 User Manual page 184

Table 62 Advanced Application > Policy Rule (continued)
LABEL DESCRIPTION
Action
Specify the action(s) the OLT takes on the associated classified traffic flow.
Note: You can specify only one action (pair) in a policy rule. To have the OLT take multiple actions on
the same traffic flow, you need to define multiple classifiers with the same criteria and apply
different policy rules.
Say you have several classifiers that identify the same traffic flow and you specify a different policy rule for each. If
their policy actions conflict (Discard the packet, Send the packet to the egress port and Metering), the OLT only
applies the policy rules depending on the classifier names. The longer the classifier name, the higher the classifier
priority. If two classifier names are the same length, the bigger the character, the higher the classifier priority. The
lowercase letters (such as a and b) have higher priority than the capitals (such as A and B) in the classifier name.
For example, the classifier with the name of class 2, class a or class B takes priority over the classifier with the name
of class 1 or class A.
Let's say you set two classifiers (Class 1 and Class 2) and both identify all traffic from MAC address 11:22:33:44:55:66
on port 3.
If Policy 1 applies to Class 1 and the action is to drop the packets, Policy 2 applies to Class 2 and the action is to
forward the packets to the egress port, the OLT will forward the packets.
If Policy 1 applies to Class 1 and the action is to drop the packets, Policy 2 applies to Class 2 and the action is to
enable bandwidth limitation, the OLT will follow the bandwidth limitation settings.
If Policy 1 applies to Class 1 and the action is to forward the packets to the egress port, Policy 2 applies to Class 2
and the action is to enable bandwidth limitation, the OLT will follow the bandwidth limitation settings.
Forwarding Select No change to forward the packets.
Select Discard the packet to drop the packets.
Select Do not drop the matching frame previously marked for dropping to retain the frames that
were marked to be dropped before. For example, the traffic that exceeds the maximum
bandwidth allocated in the Advanced Application > Bandwidth Control screen won't be
dropped if Do not drop the matching frame previously marked for dropping is selected.
Priority Select No change to keep the priority setting of the frames.
Select Set the packet's 802.1p priority to replace the packet's 802.1p priority field with the value
you set in the Priority field.
Select Send the packet to priority queue to replace the packet's 802.1p priority field with the
value you set in the Priority field and put the packets in the designated queue.
Select Replace the 802.1p priority field with the IP TOS value to replace the packet's 802.1p
priority field with the value you set in the TOS field and put the packets in the designated queue.
Diffserv Select No change to keep the TOS and/or DSCP fields in the packets.
Select Set the Diffserv Codepoint field in the frame to set the DSCP field with the value you
configure in the DSCP field.
At the time of writing, The OLT doesn't support Set the packet's TOS field and Replace the IP TOS
with the 802.1p priority value.
Outgoing Select Send the packet to the mirror port to send the packet to the mirror port.
Select Send the packet to the egress port to send the packet to the egress port.
Select Set the packet's VLAN ID to set the packet's VLAN ID.
At the time of writing, The OLT doesn't support Send the matching frames(broadcast or DLF,
multicast, marked for dropping or to be sent to the CPU) to the egress port.
Chapter 22 Policy Rule
OLT2406 User's Guide
184