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Policy
Avaya X330WAN User’s Guide 49
X330WAN allows for up to 20 concurrent active Policy lists on all of the interfaces.
You can set a Policy list per interface and per direction, meaning each interface can
have an ingress and egress active Policy list. On the FabricFastEthernet port, a
Policy list applies to all of the configured VLANs. A Policy list in X330WAN can
include QoS and Access Control rules.
In addition to the rules, each Policy list includes a DSCP-802.1p mapping table. You
can specify the Layer 2 Priority for forwarding the packet, based on the packet’s IP
header DSCP field. When no Policy rules are configured, or when the outcome of a
Policy rule is “permit”, the DSCP-802.1p mapping table is consulted to verify
whether the packet priority should be changed. In this case, you can configure
whether to use the mapping table and change the priority accordingly, or to leave
the original 802.1p priority (trust CoS).
The third element of the X330WAN Policy list is the Composite Operations Table,
illustrated in Figure 4.7. The Composite Operations Table defines the operations
applied to a packet, when the packet matches a Policy rule or a specific DSCP value.
The Policy rules action and the DSCP mapping table point to an entry in the
Composite Operations Table. The Composite Operations Table includes a default
list of all of the possible priority modification and Access Control actions. You can
create more entries in the Composite Operation Table using the X330WAN CLI
commands presented on page 50, and described in Chapter 6: X330WAN CLI
Commands. Each entry in the Composite Operation Table is composed of a
combination of different available Policy operations, such as Access Control,
Priority, and DSCP.
Figure 4.7 Default Composite Operations Table
Op Name Access Notify Priority DSCP Valid-Data
--- ------------------- ------- --------- --------- ---- ---- ----------
0 fwd0 forward no trap fwd0 no change valid
1 fwd1 forward no trap fwd1 no change valid
2 fwd2 forward no trap fwd2 no change valid
3 fwd3 forward no trap fwd3 no change valid
4 fwd4 forward no trap fwd4 no change valid
5 fwd5 forward no trap fwd5 no change valid
6 fwd6 forward no trap fwd6 no change valid
7 fwd7 forward no trap fwd7 no change valid
9 permit forward no trap no-change no change valid
10 deny deny no trap no-change no change valid
11 deny-and-notify deny send trap no-change no change valid