Avaya Configuring Traffic Filters and Protocol Prioritization Manuel d'utilisateur télécharger pdf (Page 65)

Inbound Traffic Filter Criteria and Actions

3-7

IP Criteria and Actions

You ﬁlter inbound IP trafﬁc based on speciﬁed bit patterns contained within the IP

header or the header of the upper-level protocol (TCP or UDP, for example)

conveyed within the IP datagram.

Predeﬁned IP Criteria

Table 3-2 lists the predeﬁned ﬁltering ﬁelds for IP ﬁlters and the reference ﬁeld,

offset, and length value for each criterion.

User-Deﬁned IP Criteria

In addition to the predeﬁned ﬁlter criteria, you can create IP trafﬁc ﬁlters with

user-deﬁned criteria by specifying an offset and length to these reference ﬁelds in

the IP header:

Note: The circuit names you enter in the Forward to Circuit list are

case-sensitive. For example, if the circuit name is E21, but you enter it as

e21,

the ﬁlter will not be saved.

Table 3-4. Predeﬁned Criteria for IP Inbound Trafﬁc Filters

Criterion Name Reference Field Offset Length

Type of Service HEADER_START 8 8

Protocol HEADER_START 72 8

IP Source Address HEADER_START 96 32

IP Destination Address HEADER_START 128 32

UDP/TCP Source Port HEADER_END 0 16

UDP/TCP Destination Port HEADER_END 16 16

Reference Field Description

HEADER_START Points to the ﬁrst byte of the Type of Service

HEADER_END Points to the last byte of the IP Destination Address

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 161 162

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Avaya Configuring Traffic Filters and Protocol Prioritization Manuel d'utilisateur Page 65