Avaya BSGX4e User's Guide download pdf (Page 104)

104 BSGX4e Business Gateway User Guide

NN47928-102 Release 01.01

ARL Configuration

Address Resolution Logic (ARL) maps Media Access Control (MAC) addresses to

specific LAN ports. This enables the switching of packets between ports based on the

MAC address in the packet. ARL provides the following features:

 Dynamic Entries

A MAC address learning process automatically builds the ARL table as a

forwarding database. The entries the table creates are dynamic entries: entries

that are flushed regularly from the table.

Note: The default aging interval for dynamic ARL entries is 304 seconds; you

can change the default by using the age parameter.

 Static Entries

You can add entries to the ARL table. The entries you create are static entries;

static entries are not aged out of the table. Static entries remain in the table

until you explicitly delete the entry or you flush the table.

 Prioritizing Traffic by MAC Address

By defining static ARL entries, you can prioritize traffic by the MAC address in the

packet. You can assign each static entry to a priority queue. Packets that match

the entry are assigned to the specified priority queue. Four priority queues are

available: LOWESTQ, LOWQ, HIGHQ, and HIGHESTQ.

IMPORTANT: Received packets that match a static ARL entry use the priority

setting of that entry. This setting overrides all other layer 2 QoS

settings for the port (including ToS and 802.1p). You cannot

disable this feature.

ARL Configuration Command

To configure a static ARL entry or change a dynamic ARL entry, enter the following

command:

> config switch arl

Table 28 describes the ARL parameters.

Table 28. ARL Parameters

Parameter Description

index Index. This is a system-generated entry count.

entrystate Type of ARL entry (Dynamic | Static). No default exists.

mac MAC address. No default exists.

age Aging interval (in seconds) that determines when dynamic

entries are flushed from the table (16 to 4080). The value is

rounded to the next multiple of 16. The default aging interval

is 304 seconds.

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 455 456

No comments

Avaya BSGX4e User's Guide Page 104