Allied Telesis AR441S User Manual

Patch Release Note

Patch 54266-01

For AR440S and AR441S ADSL Routers

Introduction

This patch release note lists the issues addressed and enhancements made in
patch 54266-01 for Software Release 2.6.6 on existing models of AR440S and
AR441S ADSL routers. Patch file details are listed in Ta bl e 1.

Table 1: Patch file details for Patch 86264-03.

Base Software Release File

GUI Resource File Names

Patch Release Date

Compressed Patch File Name

Compressed Patch File Size

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

■ Release Note: Software Release 2.6.6 for AR440S ADSL Routers (Document

Number C613-10412-00) available from www.alliedtelesyn.co.nz/

documentation/documentation.html.

■ AR400 Series router Documentation Set for Software Release 2.6.6 available

on the Documentation and Tools CD-ROM packaged with your switch, or
from www.alliedtelesyn.co.nz/documentation/documentation.html

■ Errata to the Documentation: Software Release 2.6.6 for AR440S ADSL

Routers (Document Number C613-06011-00) available from

www.alliedtelesyn.co.nz/documentation/documentation.html

WARNING: Using a patch 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.

54-266.rez

d440Se14.rsc (AR440S)

d441Se14.rsc (AR441S)

21-Oct-2004

54266-01.paz

161304 bytes

.

.

Simply connecting the world

2 AR441S ADSL Router Hardware Platform Patch Release Note

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:

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.

AR441S ADSL Router Hardware Platform

Patch 54266-01 includes support for the AR441S ADSL (Annex B) router.

Each AR441S router consists of a base CPU card, enclosure, and power supply.
The base CPU card supports:

■ One Asymmetric Digital Subscriber Line (ADSL) Annex B port.

■ Five 10/100 LAN switch ports.

■ One asynchronous RS-232 (ASYN0) port.

The PIC bay can accommodate any of the following PICs:

• AT-AR020 PRI E1/T1 PIC, one Primary Rate E1/T1 port.

• AT-AR021(S) BRI-S/T PIC, one Basic Rate ISDN S/T port.

• AT-AR021(U) BRI-U PIC, one Basic Rate ISDN U port.

• AT-AR022 ETH PIC, one Ethernet LAN AUI/10BASE-T port.

• AT-AR023 SYN PIC, one Synchronous port with universal 50-way
AMPLIMITE connector.

• AT-AR024 ASYN4 PIC, four Asynchronous ports with RJ-45
connectors.

• AT-AR026 4ETH PIC, four 10BASE-T/100 BASE-TX auto-negotiating
ports with RJ-45 connectors.

• AT-AR027 VoIP-FXS PIC, two Foreign Exchange Subscriber (FXS) ports
with RJ-11 connectors.

Patch 54266-01

C613-10417-00 Rev A

Patch 54266-01 3

Main system

Main features of the AR440S routers are:

■ 300 MHz RISC processor.

■ 64 MBytes of SDRAM.

■ 16 MBytes of flash memory (1 MByte reserved for boot block code).

■ 5 x 10/100 Mbps full duplex, Layer 2 switched Ethernet LAN ports. All

LAN ports have Auto-MDI, however if Auto-MDI is turned off, then all
ports are hardwired as MDI-X. Software can also force a port to either MDI
or MDI-X. 802.1Q tagged VLANs are supported.

■ 1 x ADSL Annex B port

■ 1 x asynchronous DTE port.

■ Universal AC power supply.

■ On-board hardware encryption processor for DES, 3DES and AES.

Some encryption options may require feature licenses.

The RS-232 asynchronous serial port (ASYN 0) has a DB9 male connector, is
wired as a DTE port and can be used as a general purpose port for terminals,
printers or modems. The default communications settings are:

• 9600 bps

• 8 data bits

•1 stop bit

•no parity

• hardware flow control

ADSL Interfaces

The ADSL port has an RJ11 connector, and supports Dying Gasp.

Power supply

The routers have a universal AC input connector and a power switch on their
rear panel. The routers require a power input of 100-240 VAC and 50–60Hz.

Some interfaces that may be installed in the router are not transformer isolated.
This means they will be referenced to the frame ground of the equipment and
may be damaged if connected to an interface on another piece of equipment
which is at a different ground potential.

Patch 54266-01
C613-10417-00 Rev A

For more information about the hardware, see the AR400 Series Hardware
Reference on the Documentation and Tools CD-ROM.

4 Features in 54266-01 Patch Release Note

Features in 54266-01

Patch 54266-01 includes the following enhancements and resolved issues:

PCR: 40563 Module: ADSL

This patch, together with the base software release, supports the AR441S
ADSL (Annex B) router. With this patch, the AR440S ADSL port operates in
Annex A mode for ADSL over POTS, and the AR441S ADSL port operates
in Annex B mode for ADSL over ISDN. (“AR441S ADSL Router Hardware

Platform” on page 2)

PCR: 40568 Module: SWK Level: 3

If the Jabber counter in the output of the show switch port counter
command had more than four digits, it displayed an incorrect value. This
issue has been resolved.

PCR: 40572 Module: M8272 Level: 3

An AR023 synchronous port interface card (PIC) installed in an AR440S
failed the Test facility interface test, even when there was nothing wrong
with the PIC. This issue has been resolved.

PCR: 40576 Module: Firewall Level: 2

When the firewall was creating new NAT entries under extremely heavy
loads, it occasionally caused a fatal error. This issue has been resolved.

PCR: 40581 Module: BRG Level: 2

The router could not bridge between an ATM channel and a VLAN
interface. This issue has been resolved.

PCR: 40582 Module: BRG Level: 2

Occasionally a reboot occurred when the router attempted to bridge traffic
to an ATM channel before the channel had come up for the first time. This
issue has been resolved.

PCR: 40585 Module: IPG Level: 2

Attaching an IP interface to a VCMux encapsulated ATM interface with
Inverse ARP disabled by using the command:

add ip interface=atm0.1 ipaddress=192.168.1.1

inversearp=off

failed, giving one of the messages:

Error (3005271): Internal Error: Failed to start interface

Error (3005271): Internal Error: Failed to set interface

This issue has been resolved. It is now possible to add an IP address to a
VCMux encapsulated ATM interface with inversearp set to off. This is
known as RFC 1483 routing. RFC 1577, classical IP and ARP over ATM, still
requires the ATM interface to be LLCSNAP encapsulated.

Patch 54266-01

C613-10417-00 Rev A

Patch 54266-01 5

PCR: 40613 Module: SYN Level: 3

When the Test facility was used to test an AR023 synchronous PIC interface,
it sent some debugging messages, "SYNCheckInterface", to the console port.
This issue has been resolved: the Test facility no longer sends these
messages.

PCR: 40618 Module: Firewall Level: 3

When NAT was enabled and the router was configured to pass FTP requests
to a server inside the network, the Firewall translated the ftp-data source
port (tcp/20) of an FTP server located on a private interface to another port.
Such packets no longer conformed strictly to RFC 959, and some other
firewalls on the Internet may then have denied them. This issue has been
resolved: the Firewall now sends all ftp-data packets from port 20 on the
firewall, whether or not NAT is enabled.

PCR: 40619 Module: IPG Level: 2

The output of the show config dynamic command incorrectly displayed
the following parameters for the set ipv6 prefix command, even when they
were not specified with the command:

•The valid parameter displayed an incorrect value; the router did not
use this incorrect value.

•The preferred parameter displayed an incorrect value; the router did
not use this incorrect value.

•The onlink parameter displayed the default value yes.

•The autonomous parameter displayed the default value on.

This issue has been resolved: the unused parameters are no longer
displayed.

PCR: 40625 Module: SWK Level: 2

The GUI on the AR441S did not display a port map on the System Status
page. This issue has been resolved. GUI resource file d441Se14.rsc or later
is also required to display the port map on the AR441S.

PCR: 40629 Module: Firewall Level: 2

A fatal exception in the firewall occurred occasionally when a large number
of proxied connections were rapidly established, for example, during a SYN
attack. This issue has been resolved.

PCR: 40633 Module: ENCO Level: 2

The encryption engine on the AR441S was not initialised. 3DES outer, 3DES
inner and AES encryption algorithms were not available. This issue has
been resolved.

Patch 54266-01
C613-10417-00 Rev A

PCR: 40638 Module: Firewall Level: 2

When a global interface was dynamically assigned an IP address via DHCP
or PPP, NAT configurations with dynamic private interfaces
(interface=dyn-<dyn-int-name>) were not updated. This resulted in the
failure of sessions received on dynamic private interfaces because the global
IP address was invalid. This issue has been resolved.

6 Features in 54266-01 Patch Release Note

PCR: 40647 Module: ETH Level: 2

When a virtual Eth interface was created over ATM, for example, using the
command:

create eth=0 over=atm=0.1

and a VPN configuration was applied directly to that Eth interface, the
router ran out off buffers and caused a fatal exception under heavy
reception load.

This issue has been resolved: a limit has now been set so that the virtual
Ethernet interfaces, like physical Eth interfaces, stop reception by dropping
excess packets when the ethernet receive queue is too long or when the
router is running out of buffers. The ifInDiscards counter, displayed in the
output of the show eth counter command, is incremented when this
happens on a virtual Eth interface.

Patch 54266-01

C613-10417-00 Rev A