Avaya Configuring Traffic Filters and Protocol Prioritization Uživatelský manuál stáhnout pdf (Strana 139)

Applying Outbound Traffic Filters

7-21

Changing Filter Precedence

You can assign as many as 31 outbound trafﬁc ﬁlters per protocol to each router

interface. As you add ﬁlters to an interface, the Conﬁguration Manager numbers

them chronologically (rule #1, rule #2, rule #3, and so on). The rule number

determines the ﬁlter precedence; lower rule numbers have higher precedence.

Figure 7-14 shows a sample listing of ﬁlters on an interface.

Figure 7-14. Sample List of Outbound Filters

The ﬁrst ﬁlter has the highest precedence and a rule number of 1. Subsequent

ﬁlters created on the interface have decreasing precedence. If a packet matches

two ﬁlters, the ﬁlter with the highest precedence (lowest number) applies. For

example, if the ﬁrst ﬁlter on the interface (rule #1) drops a packet and the second

ﬁlter (rule #2) accepts the same packet, rule #1 has precedence and the packet will

be dropped.

Try to create ﬁlters on the interface in order of precedence. However, if you can’t,

or if your ﬁltering strategy changes, you can use the Priority/Outbound Filters

window to rearrange the precedence of existing ﬁlters.

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Avaya Configuring Traffic Filters and Protocol Prioritization Uživatelský manuál Strana 139