Allied Telesis Patch 86261-04 Uživatelský manuál stáhnout pdf (Strana 23)

Patch 86261-09 For Rapier and AT-8800 Series Switches SHOW IGMPSNOOPING ROUTERADDRESS 23

Patch 86261-09 for Software Release 2.6.1

C613-10388-00 REV J

When a DHCP client was in the renewing state, and it sent a DHCP Request,

the device did not add the ARP entry to the ARP table. Instead, the device

generated an ARP Request in order to transmit the DHCP Ack. This caused

a broadcast storm in the network when the client kept sending DHCP

Requests. This issue occurred because the ciaddr field, not the giaddr field,

was checked in the Request packet when the device determined whether to

add the ARP entry. This issue has been resolved.

In the output of the SHOW IP DNS CACHE command, “TTL” was

displayed as seconds. This has been changed to minutes because the TTL is

updated every minute.

The current implementation of RSTP conforms to the IEEE standard

802.1w-2001. However, several minor deviations from the standard are

possible without having a functional impact on the behaviour of RSTP.

These changes are useful for debugging RSTP, and tidy up aspects of RSTP

that sometimes have no purpose. The following three variations have been

implemented:

•The Learning and Forwarding flags are set in BPDUs to indicate the state

of the Port State Transition state machine.

•The Agreement flag is set in BPDUs only when a Root Port is explicitly

agreeing to a proposal from a designated port. Do not set the Agreement

flag in BPDUs transmitted by Designated Ports.

•The Proposal flag is not set in a BPDU sent by a designated port once the

port has reached the forwarding state.

On AT-8800 series switches, when the fan status changed, the device did not

send a SNMP trap and log. When the temperature was above the allowable

threshold, the device sent the wrong SNMP trap. This issue has been

resolved. Also, the temperature thresholds of the AT-8824 and AT-8848 have

been set to different values of 62º C and 67º C respectively.

Static ARP entries sometimes prevented the firewall from working

correctly. This is because when an VLAN interface is added to the firewall,

the CPU takes over the routing from the switch silicon in order to inspect

the packet. Hence all the Layer 3 route entries must be deleted. However,

static ARP Layer 3 entries were not being deleted from the silicon. This issue

has been resolved. When interface is added to the firewall, all hardware

layer 3 routing is now turned off to allow the firewall to inspect packets.

If the number of messages to be stored in the TEMPORARY log output was

changed with the SET LOG OUTPUT MESSAGE command, the SHOW

LOG command output did not return any matching log messages. This

issue has been resolved. Existing messages are now displayed.

PCR: 31152 Module: DHCP Level: 2

PCR: 31153 Module: IPG Level: 4

PCR: 31154 Module: STP Level: 4

PCR: 31158 Module: CORE Level: 3

PCR: 31159 Module: FW, VLAN Level: 2

PCR: 31161 Module: LOG Level: 3

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