Chapter 23 BWM (Bandwidth Management)
ZyWALL ATP Series User’s Guide
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23.2.1 The Bandwidth Management Add/Edit Screen
The Configuration > Bandwidth Management Add/Edit screen allows you to create a new condition or
edit an existing one.
802.1P Marking
Use 802.1P to prioritize outgoing traffic from a VLAN interface. The Priority Code is a 3-bit field within a
802.1Q VLAN tag that’s used to prioritize associated outgoing VLAN traffic. "0" is the lowest priority level
and "7" is the highest.
The following table is a guide to types of traffic for the priority code.
To access this screen, go to the Configuration > Bandwidth Management screen (see Section 23.2 on
page 430), and click either the Add icon or an Edit icon.
Figure 298 Configuration > Bandwidth Management > Edit (For the Default Policy)
Table 174 Single Tagged 802.1Q Frame Format
DA SA TPID Priority VID Len/Etype Data FCS IEEE 802.1Q customer
tagged frame
Table 175 802.1Q Frame
DA Destination Address Priority 802.1p Priority
SA Source Address Len/Etype Length and type of Ethernet frame
TPID Tag Protocol IDentifier Data Frame data
VID VLAN ID FCS Frame Check Sequence
Table 176 Priority Code and Types of Traffic
PRIORITY TRAFFIC TYPES
0 (lowest) Background
1Best Effort
2 Excellent Effort
3 Critical Applications
4 Video, less than 100 ms latency and jitter
5 Voice, less than 10 ms latency and jitter
6 Internetwork Control
7 (highest) Network Control
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