Allied Telesyn International Corp TurboStack AT-S6 User's Guide download pdf (Page 43)

AT-S10 Management Software User’s Guide

Learning Mode The TurboStack hub has two modes of learning:

❑ Learning is on; security is off (the default)

❑ Security is on; learning is off

Regardless of the mode you select, SNMP statistics gathering continues.

NOTE

If you have a redundant links (RL) connection to a device with two network

adapter cards (and therefore two MAC addresses), and your hub is in

secure mode (and therefore learning is off), you must either allow the

secondary port to learn the MAC addresses first; or enter the MAC

addresses in the source address table.

Learning On. This is the default setting. In this mode, the SAT is in an

“unlocked” state and is updated each time a port receives a packet from a

new source address. The maximum number of addresses to store in the

table is 300.

When the system is in a learning mode, the software:

❑ Monitors the MAC source address continuously on each port of the

TurboStack hub module

❑ Compares incoming source addresses to entries on the table

❑ Updates the table by storing new addresses

Most users typically keep the learning mode on to continuously update the

MAC address table. Information in the table is useful for inventory

management purposes, based on MAC addresses of the devices connected

to the module. As an option, you can manually turn learning off and

automatically go to a secure mode if you want to restrict the module only

to speciﬁc MAC addresses.

Security On. In the secure mode, the learning feature is disabled and the

MAC address table is in a “locked” state. MAC addresses are written to

non-volatile memory and survive power failures.

To enable security and prevent intrusions:

1. Enter E to turn the module into secure mode.

The lower portion of the screen displays the following intruder

protection options:

Source Address Learning Mode:

>E: Secure - source address table locked;intruder protection enabled

F: Learning - source address learning mode;intruder protection disabled

G: Limit address per port to 1

>H: Do not limit addresses

Intruder Protection:

I: send an SNMP Trap if an intruder is detected

>J: do not send an SNMP Trap if an intruder is detected

K: disable the port if an intruder is detected

>L: do not disable the port if an intruder is detected

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Allied Telesyn International Corp TurboStack AT-S6 User's Guide Page 43

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