Allied Telesis Series Manuale di istruzioni

Software Maintenance Release Note

Version 89273-02

for AT-8900 and AT-9900 series switches

Introduction

This release note lists the issues addressed and enhancements made in version

89273-02 for Software Release 2.7.3 on existing models of AT-8900 and AT-9900

series switches. File details are listed in Table 1.

This release note should be read in conjunction with the following documents:

■Release Note: Software Release 2.7.3 for AT-9900, AT-8900, SwitchBlade,

AT-9800, AT-8800, Rapier, Rapier i, AT-8700XL, and AT-8600 Series

Switches and AR400 and AR700 Series Routers (Document Number C613-

10431-00 REV A) available from www.alliedtelesyn.com

■AT-8900 series switch Documentation Set for Software Release 2.6.2

available on the Documentation and Tools CD-ROM packaged with your

switch, or from www.alliedtelesyn.co.nz/documentation/documentation.html.

■AT-9900 series switch Documentation Set for Software Release 2.6.6

available on the Documentation and Tools CD-ROM packaged with your

switch, or from www.alliedtelesyn.com.

WARNING: Using a maintenance release for a different model or software

release may cause unpredictable results, including disruption to the network.

Information in this release note is subject to change without notice and does

not represent a commitment on the part of Allied Telesyn International. While

every effort has been made to ensure that the information contained within this

document and the features and changes described are accurate, Allied Telesyn

International can not accept any type of liability for errors in, or omissions

arising from the use of this information.

Table 1: File details for version 89273-02.

Base Software Release File 89-273.rez

Release Date 29 April 2005

Compressed File Name 89273-02.rez

Compressed File Size 4263880 bytes

2Patch Release Note

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

Some of the issues addressed in this Release Note include a level number. This

number reflects the importance of the issue that has been resolved. The levels

are:

Enabling and installing this Release

To use this maintenance release you must have a base release license for

Software Release 2.7.3. Contact your distributor or reseller for more

information.

To enable this release and install it as the preferred release, use the commands:

enable rel=89273-02.rez num=2.7.3

set install=pref rel=89273-02.rez

Features in 89273-02

Patch 89273-02 includes the following enhancements and resolved issues:

Level 1

A heavy processor load could lead to queuing RSTP BPDUs, which in turn

could lead to even more processor load, resulting in more queued BPDUs.

This issue has been resolved by improving the efficiency in the interaction

between RSTP TCN BPDUs and the hardware tables.

This issue has been resolved. (PCR number: 40672)

When failover occurred between a redundant pair of Load Balancing

devices, host ARP caches were not updated with the new Master's MAC

address, thus causing the hosts to lose connectivity until their ARP caches

timed out the stale entry. This issue has been resolved. (No PCR number.)

A reboot could occur while ageing out Firewall sessions when the device

was under heavy load and had many active Firewall sessions.

This issue has been resolved. (No PCR number.)

Level 1 This issue will cause significant interruption to network services, and

there is no work-around.

Level 2 This issue will cause interruption to network service, however there

is a work-around.

Level 3 This issue will seldom appear, and will cause minor inconvenience.

Level 4 This issue represents a cosmetic change and does not affect network

operation.

CR00005227 Module: SWI, RSTP, SWMX,

SWCX, SW56

Level: 1

CR00006609 Module: LB Level: 1

CR00007034 Module: Firewall Level: 1

Version 89273-02 for AT-8900 and AT-9900 series switches 3

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

When either the Firewall was enabled or multiple L2TP tunnels were

configured, and a default route existed over an L2TP tunnel, it was possible

for an infinite internal packet loop to be created when a packet was sent

over the L2TP tunnel after the underlying interface route to the remote IP

had gone down. This caused a reboot to occur.

This issue has been resolved. (No PCR number.)

Level 2

Previously, the forwarding database was flushed instead of being aged out

when an STP topology change notification was received.

This issue has been resolved. (PCR number: 40185)

Previously, when a port or ports was moved from one VLAN to another, the

switch would reset both STP/RSTP instances that control the VLANs. This

behaviour is now changed to only reset the STP process on the STP instance

that the port(s) is joining. The switch will now also retain the port(s) edge-

port setting during the moving process.

This issue has been resolved.

A switch, lock-up could occur after enabling the use of QoS Counters via the

command SET SWITCH ENHANCEDMODE=QOSCOUNTERS.

This issue has been resolved.

When IP NAT was configured, a restart could occur if a TCP RST packet was

received with flags in addition to ACK.

This issue has been resolved.( PCR number: 40728)

The "SET IPV6 MLD ?" command was not displaying the correct parameters

on the command-line.

This issue has been resolved.

PPP TCP mss clamping was always fixing the mss to 1372. This issue is now

fixed, so that if the MTU or MRU is less than 1472, then mss clamping

clamps the mss to the correct size.

This issue has been resolved.

PPPoE has been modified so that a single host can be attached to multiple

access concentrators without a conflict of session ID's.

CR00007695 Module: PPP Level: 1

CR00002290 Module: STP, SWI Level: 2

CR00002662 Module: STP Level: 2

CR00004964 Module: CORE, PSS, QOS, SWI

SWMX,

Level: 2

CR00005983 Module: IPNAT Level: 2

CR00006521 Module: IPv6 Level: 2

CR00006554 Module: PPP Level: 2

CR00006769 Module: PPP Level: 2

4Patch Release Note

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

A change was made in the 2.6.1 software release to reset the PPP idle timer

for received traffic as well as transmitted traffic to avoid a PPP link idling

out when receiving unidirectional traffic. However, this has undesirable

side effects as it is not possible to control the received traffic. This change

has been removed. Users can avoid a PPP link idling out for received

unidirectional traffic by setting the value of the IDLE parameter to OFF, or

in the case of received multicast traffic, setting the IDLE parameter to a

value greater than the multicast hello timer.

When PPP was configured over L2TP over PPPoE, and the firewall was

enabled, a restart could occur in some circumstances.

This issue has been resolved.

If RIP was configured to explicitly exchange packets with a neighbour in

another subnet, the RIP packets from that neighbour were dropped.

This issue has been resolved.

When routers and switches were using CIDR addressing, with a unicast

address coinciding with a network broadcast address of class A, B, or C,

then they could incorrectly forward traffic as directed broadcasts, even

though the traffic was unicast (only).

This issue has been resolved. (PCR number: 50069)

When the router was acting as an L2TP Access Concentrator (LAC) it would

fail to negotiate a Virtual tunnel to another vendor’s LNS. This was due to

invalid Proxy LCP AVPs being used within the ICCN message.

This issue has been resolved. (No PCR number.)

In some 8924/9924 network configurations deploying QoS and IPMC

traffic, the QoS may have periodically miss-classified the traffic.

This issue has been resolved.

When the firewall was configured and the firewall ident proxy feature was

disabled, or if the firewall was disabled, TCP port 113 was still left open.

This issue has been resolved.

QoS was incorrectly misclassifying packets for small periods of time.

This issue has been resolved

CR00007005 Module: PPP Level: 2

CR00007078 Module: PPP Level: 2

CR00007291 Module: IPG Level: 2

CR00007341 Module: IPG Level: 2

CR00007436 Module: L2TP Level: 2

CR00007477 Module: SWMX Level: 2

CR00007493 Module: FIREWALL Level: 2

CR00007605 Module: SWMX, PSS Level: 2

Version 89273-02 for AT-8900 and AT-9900 series switches 5

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

NSSA areas were not able to form adjacencies with some other vendors’

equipment.

This has been resolved.

Some SSH Clients do not limit the length of the SSH username. Under some

special circumstances, when the AlliedWare ™ SSH server received a

username of 186 characters, the device would restart unexpectedly. This

was fixed to limit a SSH username to be less than 64 characters and

returning a failure message if the username was 64 or more characters.

Restarts could occur when the firewall parsing process was searching for

the character ‘/’ in a string.

This issue has been resolved.

Under some circumstances the SSH listen port would be closed.

This issue has been resolved.

Add firewall policy list would overwrite the low memory 0x0.

This issue has been resolved.

When a URL contains an IP address instead of a Domain name and the

inverse DNS lookup for resolving the domain name failed, the proxy server

could block the cookies incorrectly. Also the Proxy server could parse an

HTTP message incorrectly if the URL field of the HTTP message contained

non-ASCII characters.

These issues have been resolved

Triggers based on memory resource were not activated when the specified

memory level was reached.

This issue has been resolved.

The COPY command returned an error message saying the input filename

was invalid, even if a valid filename was given.

This issue has been resolved

ARP requests received that matched a static ARP entry would overwrite the

hardware switching tables for that entry. The static ARP in software (SHOW

IP ARP) would remain as defined by the user, however. Now, if an ARP

CR00007888 Module: OSPF Level: 2

CR00007948 Module: SSH Level: 2

CR00007991 Module: FIREWALL Level: 2

CR00007992 Module: SSH Level: 2

CR00008008 Module: Firewall Level: 2

CR00008068 Module: HTTP Level: 2

CR00008080 Module: TRG Level: 2

CR00008101 Module: FILE Level: 2

CR00008117 Module: IPG, VRRP Level: 2

6Patch Release Note

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

entry has been added statically, the hardware switching tables are not

updated by the dynamic ARP information.

The flash file system could sometimes have duplicate copies of a file.

This issue has been resolved.

If an IP interface was assigned its IP address dynamically, and the IP that it

was assigned matched the Network address of another interface on the

device, then the device would drop packets destined for the remotely

assigned IP interface.

This issue has been resolved. PCR40549

A reboot could occur if a device had an extremely large boot script.

This issue has been resolved

Level 3

The DNS relay has been changed to allow the relay of resource record types

between 0x1d and 0xff. Previously packets with these types of resource

records were dropped.

This issue has been resolved (No PCR number.)

DVMRP packets were being dropped due to packet length inconsistencies

from other vendor devices.

This issue has been resolved. (No PCR number.)

Previously, when changing the password on a log output/receive definition

to a shorter string, the log message exchange could fail.

This issue has been resolved. (PCR number: 50070)

A slight change has been made to the Mirror ports tagged mode. If all

mirroring ports are untagged then the Mirror port will transmit only

untagged packets. If at least one mirroring port is tagged then the Mirror

port will always transmit tagged packets.

Previously, the Mirror port would always transmit tagged packets

regardless of the mirroring port(s) tagging mode.

The 9924/8948 could reboot when attempting to display the ASIC LED

control register.

This issue has been resolved

CR00008176 Module: FFS, FILE Level: 2

CR00008184 Module: IPG Level: 2

CR00008266 Module: CORE Level: 2

CR00007476 Module: IPG Level: 3

CR00007521 Module: IPG Level: 3

CR00007716 Module: LOG Level: 3

CR00008098 Module: CORE, SWMX Level: 3

CR00008123 Module: SWI Level: 3

Version 89273-02 for AT-8900 and AT-9900 series switches 7

Software Maintenance Release note for Software Release 2.7.3

C613-10443-00 REV A

Level 4

There was not enough information displayed to the user when the

ACTIVATE FLASH COMPACTION command was entered at the same time

as Flash was compacting.

This issue has been resolved. (No PCR number.)

Enhancements

Previously ISAKMP NAT-T was enabled by default on every ISAKMP

policy created. NAT-T is now disabled by default on every ISAKMP policy.

(No PCR number.)

The ability to configure Van Jacobson Header Compression over dynamic

PPP interfaces has been added. To this end, the command parameter

'VJC={ON|OFF}' has been added to the CREATE and SET PPP TEMPLATE

commands. (No PCR number.)

Add support for the MG8T (Agilent QBCU-5730R) to support 10/100/1000

modes of operation.

Support has been added for VoIP services using SIP (port 5060) where the

VOIP phone's session setup is 5 packets or less and the keepalive is greater

than 5 min.

Note: If the keepalive is greater than the default udpTimeout of 20 minutes, then this

will need to be configured for the firewall policy.

Features in 89273-01

No release.

CR00006093 Module: FFS Level: 4

CR00006652 Module: IKMP, IPSEC

CR00006953 Module: PPP

CR00008045 Module: SWMX

CR00008367 Module: FIREWALL

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