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Chapter 67 Configuring IP Filter Rules 631

BCM 4.0 Networking Configuration Guide

Rule Name Assign a name to the rule. The maximum length is 15

characters.

This field is optional and can be left empty.

The same rule name can be repeated under the same

interface.

Enable <check box> Determine if a rule is active in the list of rules.

Default: selected.

Stateful <check box> Specify if the states of connections that match this rule

will be monitored. This permits the creation of one-way

rules. For example, you can permit inside traffic to return

but block traffic originating from the outside.

Note: Be aware of the limitation of stateful sessions with

VoIP DSCP marking rules. For VoIP DSCP marking to

work, the user can either configure an outbound filter rule

(stateful or not) with disposition to “mark” or create an

inbound stateful filter rule with disposition to “mark”. A

disposition of “mark” allows the inbound packet to pass

but does not mark it.

Default: selected.

Use first match <check box> Specify if the first rule match is used.

If cleared, the last rule match is used.

If multiple rules match, either the first rule with this check

box selected is used, or the last rule that matches in the

list of available matching rules is used if all check boxes

are cleared, there is no concept of more specific matches

or less specific matches other than being determined by

the order of the rule in the list of rules. The lowest

sequence number is looked up first.

Default: Selected.

Filter Action

Disposition Block

Pass

Mark

Specify if a packet that matches this rule is blocked or

passes through.

Default: Block.

New QoS value EF, CS7, CS6, CS5, CS4,

CS3, CS2, CS1, AF41, AF42,

AF43, AF31, AF32, AF33,

AF21, AF22, AF23, AF11,

AF12, AF13, DF(CS0), or

CUSTOM.

If the Disposition attribute is set to Mark, select the new

DiffServ Code Point (DSCP) value that will put on the IP

datagram.

If the Disposition attribute is set to either Block or Pass,

this attribute value is ignored.

Note: The DSCP value is the 6-bit field of the ToS byte.

Default: DF. This value is referred to as DeFault DSCP

PHB (value 0).

New ToS byte <0-255> Specify a custom ToS byte value not available in the

DSCP values. This value applies to the 8-bit field of the

ToS by t e.

This attribute can only be set if New QoS Value is set to

CUSTOM.

Note: This value applies to the 8-bit field of the ToS byte.

Default: 0.

Table 154 Add Inbound Filter Rule (Sheet 2 of 5)

Attribute Value Description

1 2 ... 626 627 628 629 630 631 632 633 634 635 636 ... 757 758

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Avaya BCM 4.0 Networking Guida di Configurazione Pagina 631

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