Allied Telesis AR44xS Instruction Manual

Software Maintenance Release Note

Version 276-05

for AR450S and AR44xS series routers, and

Rapier i and AT-8800 series switches

This software maintenance release note lists the issues addressed and enhancements made in Maintenance Version 276-05 for Software Release 2.7.6. Release

details are listed in the following table:

Caution: Using a maintenance version on the wrong model may cause unpredictable results, including disruption to the network.

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

■Release Note for Software Version 2.7.6 for AT-8800, Rapier i, AT-8700XL, AT-8600, AT-9900, AT-8900 and AT-9800 Series Switches and AR400 and AR700

Series Routers (document number C613-10462-00 Rev A)

■your router or switch’s Document Set for Software Release 2.7.5. This document set is available on the CD-ROM that shipped with your router or switch,

or from www.alliedtelesis.co.nz/documentation/documentation.html

Caution: Information in this release note is subject to change without notice and does not represent a commitment on the part of Allied Telesis Inc. While every

effort has been made to ensure that the information contained within this document and the features and changes described are accurate, Allied Telesis Inc. can

not accept any type of liability for errors in, or omissions arising from the use of this information.

Models Series Release File Date Size (bytes) GUI file

AR440S, AR441S, AR450S AR400 54276-05.rez 8 September 2006 4512716 d440se27.rsc, d441se27.rsc, d450se27.rsc

Rapier 24i, Rapier 48i, Rapier 16fi Rapier i 86276-05.rez 8 September 2006 4312896 dr24ie27.rsc, dr48ie27.rsc, dr16ie27.rsc

AT-8824, AT-8848 AT-8800 86276-05.rez 8 September 2006 4312896 d8824e27.rsc, d8848e27.rsc

Enabling and Installing this Release 2

Version 276-05

C613-10474-00 REV D

Enabling and Installing this Release

To use this maintenance release you must have a base release license for Software Release 2.7.6. Contact your distributor or reseller for more information. To

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

enable rel=xx276-05.rez num=2.7.6

set install=pref rel=xx276-05.rez

where xx is the prefix to the filename, as shown in the table on page 1. For example, to install the release on an AR440S router, use the commands:

enable rel=54276-05.rez num=2.7.6

set install=pref rel=54276-05.rez

Levels

The issues addressed in this Maintenance Version include a level number. This number reflects the importance of the issue that has been resolved. The levels

are:

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.

Features in 276-05 3

Version 276-05

C613-10474-00 REV D

Features in 276-05

Software Maintenance Version 276-05 includes all resolved issues and enhancements in earlier versions, and the resolved issues and enhancements in the

following tables. In the tables, for each product series:

■“Y” in a white column indicates that the resolution is available in Version 276-05 for that product series.

■“-” in a white column indicates that the issue did not apply to that product series.

■a grey-shaded column indicates that Version 276-05 was not released on that product series.

Level 1

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00013147 ATM 1 Excessive CPU usage was occurring when an SHDSL link was up. This resulted in

low throughput and dropped packets.

This issue has been resolved.

Y - --------

CR00013288 ADSL 1 For AR440S and AR441S ADSL routers, the Annex A and Annex B firmware has

been upgraded. On AR440S routers, this resolves an issue which meant that the

ADSL link could be unreliable at 3km when connected to a specific type of

DSLAM.

Y---------

Features in 276-05 4

Version 276-05

C613-10474-00 REV D

Level 2

Level 3

Level 4

No level 4 issues

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00012606 STP 2 Processing of an invalid STP packet could result in an STP timeout value being

incorrectly set to 0.

This issue has been resolved, so the timeout can never be set to 0.

---YY-----

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00013672 ATM 3 An SNMP Walk of the ATM MIB would fail to complete properly, as it would not

advance through the channel list.

This issue has been resolved.

Y - --------

Features in 276-05 5

Version 276-05

C613-10474-00 REV D

Enhancements

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00012881 IP Gateway - The IP implementation has been enhanced to accept IP interfaces with a /31

netmask. This results in a slightly non-standard subnet that has no network

address or broadcast address. This has become a popular extension to IP, because

it reduces wastage of IP addresses on point-to-point links.

Y--YY-----

CR00013444 IP Gateway - RIPv2 can now use authentication passwords that contain almost any printable

character, including characters such as $, % and &. The ? character is interpreted

as asking for parameter help, so this is not usable anywhere inside a password.

Also, a password cannot contain double quotes (") as the first character of the

string.

The RIP password length is now strictly enforced at 16 characters. The command

handler no longer accepts a password with more characters than this.

Y--YY-----

Features in 276-04 6

Version 276-05

C613-10474-00 REV D

Features in 276-04

Software Maintenance Version 276-04 includes all resolved issues and enhancements in earlier versions, and the resolved issues and enhancements in the

following tables. In the tables, for each product series:

■“Y” in a white column indicates that the resolution is available in Version 276-04 for that product series.

■“-” in a white column indicates that the issue did not apply to that product series.

■a grey-shaded column indicates that Version 276-04 was not released on that product series.

“-” in a grey column indicates that the issue did not apply to that product series.

“Y” in a grey column indicates that the issue applied to that product series. These issues are resolved in the next Version (276-05).

Level 1

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00007273 Switch 1 If a user created a configuration file that contained port trunk settings before

VLAN port settings, then a loop occurred when the switch rebooted with this

configuration.

This issue has been resolved.

-- - YYYY- - -

CR00011711 PIM v6 1 For IPv6, the router or switch could restart when PIM-SM detected that the

primary RPF interface to an (S,G) routing entry had changed because the RPF

interface had gone down. When the interface went down, PIM-SM recalculated

the RPF to the source for the (S,G) entry, and if PIM-SM only found a non-PIM

neighbour as the RPF to the source for the (S,G), the router or switch could

restart.

This issue has been resolved.

Y- YYY- - - - -

Features in 276-04 7

Version 276-05

C613-10474-00 REV D

CR00011994 IPsec 1 When both Software QoS and IPSec were configured on the router or switch, it

sometimes rebooted. This happened if the IPSec SA bundle was suddenly deleted

while packets were still queued in Software QoS. For example, this issue was

more likely to occur if the expirykbytes parameter of the create ipsec

bundlespecification command was configured, and the hard expiry kilobyte

limit for an IPSec SA bundle was reached quickly.

This issue has been resolved.

Y-YY---- - -

CR00012196 IPv6 1 When RIPng deleted a route from the IPv6 route table, routing for associated IPv6

flows was not updated correctly. This caused data forwarding on those flows to

use invalid routes.

This issue has been resolved.

Y- YYY- - - - -

CR00012461 IPv6 1 Sometimes the router or switch rebooted when it received Neighbour

Advertisements that did not properly conform to RFC 2461.

This issue has been resolved. The router or switch no longer reboots if it receives

non-conformant ND packets. If debugging is enabled, the router or switch now

also displays useful information about the non-conformant packets.

Y- YYY- - - - -

CR00012571

CR00013183

IPv6 1 The router or switch sometimes rebooted when running a configuration script

that included RIPng (RIPv6).

This issue has been resolved.

Y- YYY- - - - -

CR00012614 Switch 1 When PIM6 was configured on the switch, and it received an IPv6 multicast

stream for which it had no downstream interface to forward the stream to, a

reboot could occur.

This issue was resolved in a previous software version (as CR00012097) but this

version includes an improved resolution.

Y- YYY- - - - -

CR00013025 DVMRP 1 Receiving a DVMRP Graft or Prune message occasionally caused the router or

switch to reboot.

This issue has been resolved.

Y- YYY- - - - -

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

Features in 276-04 8

Version 276-05

C613-10474-00 REV D

CR00013413 IP Gateway,

Load Balancer

1If the router or switch was configured with a local interface IP address and the

interface to which this address belonged did not have a logical interface with

index 0, a number of connectivity issues from this router or switch occurred, in

which the router or switch was not able to communicate with UDP, TCP or PING.

This issue has been resolved.

Y- YYYYY- - -

CR00013457 VLAN 1 When ports were added to a currently-disabled RSTP domain, the ports could

start to discard packets (because their STP state was set to Discarding).

This issue has been resolved. When ports are added to a disabled RSTP domain,

they remain in a Forwarding state.

-- - YYYY- - -

CR00013743 Switch 1 If a user created a configuration file that contained LACP settings and VLAN port

settings, then a loop occurred when the switch rebooted with this configuration.

This issue has been resolved.

-- - YYYY- - -

CR00013758 IPv6 1 If a user manually deleted a Neighbour Discovery cache entry (by using the

command delete ipv6 nd), the router or switch sometimes rebooted some time

later.

This issue has been resolved.

Y- YYY- - - - -

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

Features in 276-04 9

Version 276-05

C613-10474-00 REV D

Level 2

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00009079 MLD

Snooping,

IPv6, Switch

2When MLD snooping creates an All Router group, it also (correctly) adds router

ports to other groups. However, when MLD Snooping detected that there were

no more router ports in the network, it deleted the All Router group but did not

delete the router ports from the other groups.

This issue has been resolved.

---YY-----

CR00009212 Bridge 2 The Bridge cannot be configured to bridge PPPoE packets from an Ethernet

interface that has also been configured as a PPPoE interface. Previously, such a

Bridge configuration would appear to succeed. However the Bridge would not

bridge PPPoE packets and the router would restart when the command reset

bridge was entered.

This issue has been resolved. Note: if you want to bridge PPPoE packets, do not

also configure the router as a PPPoE endpoint (by using the command create

ppp=number over=ethx-any).

Y-Y-------

CR00009213 MSTP 2 Because of an MSTP issue, the switch did not always send a BPDU with an

agreement flag to its designated bridge, even if the switch was synchronised with

the latest spanning tree information from the designated bridge. This prevented

the designated port on the designated bridge from making a fast transition to

the forwarding state. The result was that the network could take up to two times

the “forward delay” time to fully converge.

This issue has been resolved.

---YYYY---

CR00009826 IP Gateway 2 When a static ARP is deleted, the router or switch sends out an ARP request to

attempt to create a dynamic ARP for that IP address. Previously, the router or

switch did not process the ARP response correctly and therefore did not add the

ARP to its ARP table.

This issue has been resolved. When a static ARP is deleted, the router or switch

attempts to create a dynamic ARP for that IP address, and will successfully add it

to the ARP table if a device responds.

Y- YYYYY---

Features in 276-04 10

Version 276-05

C613-10474-00 REV D

CR00010177 Firewall 2 When a session had been initiated from the LAN side of the firewall and the SIP

ALG received a re-invite packet for that session from the WAN side, the SIP ALG

did not replace the Call ID string in the re-invite packet.

This issue has been resolved.

Y-YYY-----

CR00010513 BGP,

IP Gateway

2BGP did not update its route table when a blackhole route changed in IP.

This issue has been resolved.

Y-YYY-----

CR00010593 IPv6 2 The router sometimes forwarded packets to directly connected hosts whose

corresponding IPv6 ND cache entry was still in INCOMPLETE state. This caused it

to send the packets to incorrect MAC addresses and egress ports.

This issue has been resolved.

Y-YYY-----

CR00011120 VRRP 2 Packets transmitted from VRRP sometimes contained random VLAN tags or VLAN

Priority information.

This issue has been resolved.

Y-Y-------

CR00011175 IPv6 2 After a route’s metric and/or preference changed, the route’s position in the

Equal Cost Multi Path chain was not always updated properly. This sometimes

caused the forwarding process to select a sub-optimal route.

This issue has been resolved.

Y-YYY-----

CR00011434 File 2 The router or switch sometimes rebooted when copying a very large file (several

Mbytes). This issue has been resolved by improving the copy process so that it

uses fewer memory buffers.

Y- YYYYY---

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

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