Chapter 21 Policy Rule
Table 51 Advanced Application > Policy Rule (continued)
LABEL | DESCRIPTION |
Egress | Type the number of an outgoing port. |
Port |
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Priority | Specify a priority level. |
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Rate Limit | You can configure the desired bandwidth available to a traffic flow. Traffic |
| that exceeds the maximum bandwidth allocated (in cases where the |
| network is congested) is dropped. |
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Bandwidth | Specify the bandwidth in kilobit per second (Kbps). Enter a number |
| between 64 and 1000000. |
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Action |
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Specify the action(s) the Switch takes on the associated classified traffic flow.
Note: You can specify only one action (pair) in a policy rule. To have the Switch 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 Rate Limit), the Switch only applies the policy rules with the Discard the packet and Send the packet to the egress port actions 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 foward the packets to the egress port, the Switch 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 Switch will discard the packets immediately.
If Policy 1 applies to Class 1 and the action is to foward the packets to the egress port, Policy 2 applies to Class 2 and the action is to enable bandwidth limitation, the Switch will forward the packets.
Forwarding | Select No change to forward the packets. |
| Select Discard the packet to drop the packets. |
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Priority | Select No change to keep the priority setting of the frames. |
| Select Set the packet’s 802.1 priority to replace the packet’s 802.1 |
| priority field with the value you set in the Priority field. |
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Outgoing | Select Send the packet to the egress port to send the packet to the |
| egress port. |
| Select Set the packet's VLAN ID to replace the VLAN ID of the packets |
| with the value you configure in the VLAN ID field. |
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| 183 |
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