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Known Issues

MAC address-based port security and the limited security mode. The limited security mode in

MAC address-based port security is nonfunctional. (5327)

Enhanced stacking. The AT-9400 Switch must have an IP address to be a slave switch in an

enhanced stack. A routing interface that specifies the switch's IP address has to be assigned

to the common VLAN of the stack and the interface has to be designated as the switch's local

interface. This rule applies even when the Default_VLAN is acting as the common VLAN of

the switches. (5369)

802.1x Control Direction parameter. The Control Direction parameter for 802.1x authenticator

ports has an Ingress option for forwarding egress broadcast and multicast traffic when the

ports are in the unauthorized state. This option is nonfunctional and instead blocks these

packets. (5487)

Routing Information Protocol (RIP) and new, inactive routing interfaces. When transmitting a

switch's routing table, RIP erroneously includes inactive routing interfaces. This problem is

limited to new routing interfaces and disappears after a routing interface has changed to the

active status for the first time. Afterwards, RIP transmits the interface only when it is active.

(5753)

Enhanced stacking and the web browser management interface. The enhanced stacking

feature in the web browser interface is nonfunctional. As an alternative, use the menus or

command line interface to access switches with enhanced stacking. (5871)

802.1x authentication ports and ARP packets. 802.1x authentication ports in the

unauthorized state forward ARP packets instead of blocking them. (5880)

LACP aggregators. Allied Telesis does not recommend using the LACP feature in this release

of the management software unless the aggregators will be part of the Default_VLAN. A

problem occurs if you create LACP aggregators consisting of ports from VLANs other than

the Default_VLAN. During the next reset the switch will not recreate the VLANs and will

instead add the aggregators to the Default_VLAN. (5894)

Unknown unicast rate limiting. Unknown unicast rate limiting has been changed at the driver

level to accommodate stacking and can no longer be disabled. At the default setting, the rate

limit for unknown unicast packets for each port is 25 packets per second. This should not be

changed when a switch is part of a stack. If you are operating the switch as a stand-alone

device and want to increase rate limiting for unknown unicast packets on all the ports, issue

this command:

set switch port=all unkucastratelimiting=yes unkucastrate=

The value parameter has a range of 0 to 262,143 packets per second.

Since this change was made at the driver level, the SHOW SWITCH PORT command will not

display the correct status of unknown unicast rate limiting on the ports of a switch at the

default setting. It will show the feature as disabled, when in fact it is enabled.

Routing Information Protocol (RIP) on the AT-9448Ts/XP Switch. The performance of RIP on

the AT-9448Ts/XP Switch might not be predictable. The switch might not update its routing

table in response to routes received from other units and may lose routes. (5422)

PN 613-000915 Rev A

AT-S63 Version 3.1.0 Patch 1 Software Release Notes

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Allied Telesis, Inc.