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Patch Release Note

Patch 86261-04

For Rapier and AT-8800 Series Switches

Introduction

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

patch 86261-04 for Software Release 2.6.1 on existing models of Rapier and

AT-8800 Series switches. Patch file details are listed in Table 1.

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

■Release Note: Software Release 2.6.1 for Rapier and AT-8800 Series

Switches (Document Number C613-10383-00 Rev A) available from

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

■Rapier Series Switch or AT-8800 Series Switch Documentation Set for

Software Release 2.6.1 available on the Documentation and Tools CD-ROM

packaged with your switch, or 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.

Table 1: Patch file details for Patch 86261-04.

Base Software Release File 86-261.rez

Patch Release Date 19-Nov-2003

Compressed Patch File Name 86261-04.paz

Compressed Patch File Size 261628 bytes

2Patch Release Note

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

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:

Features in 86261-04

Patch 86261-04 includes all issues resolved and enhancements released in

previous patches for Software Release 2.6.1, and the following enhancements:

When RIP demand mode was enabled, and one interface changed to a

reachable state, the triggered Request packet was not sent from that

interface, and triggered Response packets were not sent from all other RIP

interfaces. This resulted in slow convergence of routing tables across the

network. This issue has been resolved.

Support has been added for the AT-AR021 (S) BRI-S/T PIC (Port Interface

Card) with basic rate ISDN.

RIP did not send the correct next hop address if the route originated from a

different subnet to that of the egress interface. This issue has been resolved.

If an IPv6 filter that blocked traffic on a VLAN interface was removed, the

traffic was still blocked. This issue has been resolved.

Occasionally an error occurred with OSPF’s route table calculation, so all

routes in the network were not discovered. The error only happened with a

network topology that involved connections between routers via both a

Point to Point link and a transit network link. This issue has been resolved.

A new command has been added that forces a route table recalculation by

rerunning the Shortest Path First calculation. The command is:

RESET OSPF SPF [DEBUG]

If DEBUG is specified, debugging information for the route table calculation

is output to the port from which the command was executed. SPF

debugging can be turned on for every route table calculation using the

ENABLE OSPF DEBUG=SPF command, but this will be overridden if

DEBUG is specified with the RESET OSPF SPF command.

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.

PCR: 03910 Module: IPG Level: 3

PCR: 03927 Module: BRI

PCR: 03967 Module: IPG Level: 2

PCR: 03970 Module: IPV6 Level: 3

PCR: 03978 Module: OSPF Level: 3

Patch 86261-04 For Rapier and AT-8800 Series Switches 3

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

The server string was not copied correctly into an HTTP file request when

loading information from the configuration script. This issue has been

resolved.

When 10/100 copper ports were disabled with the DISABLE SWITCH

PORT command, their link state was still UP. This issue has been resolved.

If the DISABLE SWITCH PORT command appeared in the configuration

script, an interface could come up even though ifAdminStatus was set to

‘down’. This issue has been resolved.

A fatal error sometimes occurred because of incorrect responses to

Neighbour Solicitation messages. This issue has been resolved.

If a switch port was disabled on a switch running STP, traffic was sometimes

not passed through that port after it was re-enabled. This issue has been

resolved.

The SHOW FILE command caused an error when the displayed file had a

duplicate entry due to file size mismatch. This issue has been resolved. An

error message is now logged when the SHOW FILE command detects a

duplicate file. The first FFS file will be deleted when a duplicate exists.

Static DHCP address ranges were not reclaimed if the Reclaim operation was

interrupted by the interface going down. This issue has been resolved.

An error occurred in L2TP when call names consisted of numeric characters

only. This issue has been resolved. The ADD L2TP CALL command now

only accepts call names that contain at least one alphabetic character.

The maximum value that the MESSAGES parameter accepted for the

CREATE LOG OUTPUT command was different from the value that could

be set with the SET LOG OUTPUT command. The DESTROY LOG

OUTPUT command did not release the NVS memory that was reserved for

the output. These issues have been resolved.

The DHCP server did not take any action when it received a DHCP decline

packet. This was because the device only checked the ciaddr field in the

packet, and not the RequestedIPAddress option. This issue has been resolved.

PCR: 31009 Module: HTTP Level: 3

PCR: 31064 Module: SWI Level: 2

PCR: 31072 Module: SWI Level: 3

PCR: 31084 Module: IPV6 Level: 2

PCR: 31093 Module: SWI Level: 1

PCR: 31096 Module: FFS Level: 3

PCR: 31098 Module: DHCP Level: 3

PCR: 31100 Module: L2TP Level: 3

PCR: 31119 Module: LOG Level: 2

PCR: 31132 Module: DHCP Level: 2

4 ADD IGMPSNOOPING ROUTERADDRESS Patch Release Note

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

This PCR introduces an enhancement that extends an issue that was

resolved in PCR 03890, in which switch port entries are only created for

special router multicast addresses. It is now possible to specify reserved

multicast addresses that will be treated as multicast packets from routers.

Use the following commands to configure this feature.

ADD IGMPSNOOPING ROUTERADDRESS

Syntax ADD IGMPSNOOPING ROUTERADDRESS=ipaddr[,...]

Description where:

•ipaddr is a reserved IP multicast address in dotted decimal notation.

This command adds reserved IP multicast addresses to the list of router

multicast addresses. The IP address specified must be within the range

224.0.0.1 to 224.0.0.255. This command is only valid if the IGMP snooping

router mode is set to IP with the SET IGMPSNOOPING ROUTERMODE

command.

SET IGMPSNOOPING ROUTERMODE

Syntax SET IGMPSNOOPING ROUTERMODE=

{ALL|DEFAULT|IP|MULTICASTROUTER|NONE}

Description This command sets the mode of operation for IGMP Snooping.

If ALL is specified, all reserved multicast addresses (i.e. 2240.0.1 to

224.0.0.255) are treated as router multicast addresses.

If DEFAULT is specified, the following addresses are treated as router

multicast addresses:

• IGMP Query: 224.0.0.1

• All routers on this subnet: 224.0.0.2

• DVMRP Routers: 224.0.0.4

• OSPFIGP all routers: 224.0.0.5

• OSPFIGP designated routers: 224.0.0.6

• RIP2 routers: 224.0.0.9

• All PIM routers: 224.0.0.13

• All CBT routers: 224.0.0.15

If IP is specified, addresses that are treated as router multicast addresses are

specified with the ADD/DELETE IGMPSNOOPING ROUTERADDRESS

command. In this mode, the switch will retain previous addresses that have

already been specified.

If MULTICAST is specified, the following addresses are treated as router

multicast addresses:

• DVMRP Routers: 224.0.0.4

• All PIM routers: 224.0.0.13

If NONE is specified, no router ports are created.

PCR: 31133 Module: IPG

Patch 86261-04 For Rapier and AT-8800 Series Switches SHOW IGMPSNOOPING ROUTERADDRESS 5

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

DELETE IGMPSNOOPING ROUTERADDRESS

Syntax DELETE IGMPSNOOPING ROUTERADDRESS=ipaddr[,...]

where

•ipaddr is a reserved IP multicast address in dotted decimal notation.

Description This command deletes reserved IP multicast addresses from the list of router

multicast addresses. The IP address specified must be within the range

224.0.0.1 to 224.0.0.255. This command is only valid if the IGMP snooping

router mode is set to IP with the SET IGMPSNOOPING ROUTERMODE

command.

SHOW IGMPSNOOPING ROUTERADDRESS

Syntax SHOW IGMPSNOOPING ROUTERADDRESS

Description This command displays information about the list of configured IP multicast

router addresses currently configured on the switch (Figure 1).

Figure 1: Example output for SHOW IGMPSNOOPING ROUTERADDRESS

Bridges transmitted BPDUs at the rate specified by the local helloTime value

when they were not the root bridge. This is the behaviour specified in

802.1w-2001. This behaviour can cause instability in the spanning tree when

bridges are configured with different helloTime values, especially when the

root bridge's helloTime is significantly less than other bridges in the tree. This

issue has been resolved. Non-root bridges now adopt the root bridge's

helloTime value propagated in BPDUs.

The ADD IPV6 HOST command accepted an invalid IPv6 address. This

issue has been resolved.

IGMP Snooping Router Address

----------------------------------------------------------------------------

IGMP Snooping Router Mode ...... IP

Router Address List

--------------------------------

224.0.0.4

224.0.0.6

224.0.0.80

224.0.0.43

224.0.0.23

224.0.0.15

224.0.0.60

----------------------------------------------------------------------------

PCR: 31134 Module: RSTP Level: 2

PCR: 31135 Module: IPV6 Level: 3

6 SHOW IGMPSNOOPING ROUTERADDRESS Patch Release Note

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

The firewall sent an erroneous IPSPOOF attack message when processing

large packets. This issue has been resolved.

The port counters were not incremented:

• ifInDiscards

•ifinErrors

•ifOutDiscards

•ifOutErrors

This issue has been resolved.

The following SNMP MIB objects could not be set:

•Dot1dStpPriority

•Dot1dStpBridgeMaxAge

•Dot1dStpBridgeHelloTime

•Dot1dStpBridgeForwardDelay

This issue has been resolved.

DHCP was incorrectly using the directly connected network interface

source IP address as the source IP address of packets it generates. This issue

has been resolved. DHCP now uses the local IP address as the source

address for the packets it generates when a local IP interface address is set.

If a local IP interface address is not set, then it uses the IP address of the

interface where packets are sent from as the source address.

When the device rebooted with PIM or PIM6 enabled, it sometimes did not

send a Hello packet quickly enough. This issue has been resolved.

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.

PCR: 31140 Module: FIREWALL Level: 4

PCR: 31145 Module: SWI Level: 3

PCR: 31146 Module: SWI Level: 3

PCR: 31147 Module: DHCP Level: 3

PCR: 31148 Module: PIM, PIM6 Level: 2

PCR: 31152 Module: DHCP Level: 2

PCR: 31153 Module: IPG Level: 4

Patch 86261-04 For Rapier and AT-8800 Series Switches SHOW IGMPSNOOPING ROUTERADDRESS 7

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

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:

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

of the Port State Transition state machine.

•TheAgreement 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.

•TheProposal 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.

A STP topology change incorrectly deleted static ARP entries. This issue has

been resolved.

IP MVR member ports were not timing out. MVR member ports now

timeout in the same way as IP IGMP ports. The timeout values are

configured by IGMP. Also, IGMP interfaces were incorrectly being enabled

and disabled by MVR. This issue has been resolved.

After an AT-8800 series switch was powered down or rebooted, non-auto

negotiating copper GBICs were not handled correctly. This issue has been

resolved.

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

PCR: 31162 Module: SWI Level: 2

PCR: 31167 Module: IPG Level: 2

PCR: 31170 Module: SWI Level: 2

8 SHOW IGMPSNOOPING ROUTERADDRESS Patch Release Note

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

This PCR enhances the robustness of the 802.1x port authentication

protocol.

If a device had IPSec and firewall enabled, it could not handle long ICMP

packets even when enhanced fragment handling was enabled on the

firewall. If a long packet is passed to the firewall for processing, the firewall

chains the fragmented packets. The firewall can process chained packets,

but IPSec could not process these packets, and dropped them. This was only

an issue for packets between 1723 and 1799 bytes long. This issue has been

resolved. The way IP processes fragmented packets has been changed so

that IPsec no longer drops chained packets.

Addresses learned with static port security were not added to the

configuration when the CREATE CONFIG command was executed. This

issue has been resolved.

The following commands did not require security officer privilege when the

device was in security mode, but this privilege should have been required:

• ADD USER

• SET USER

• DELETE USER

•PURGEUSER

• ENABLE USER

• DISABLE USER

• RESET USER

This issue has been resolved. Security officer privilege is now required for

these commands when security mode is enabled with the ENABLE

SYSTEM SECURITY_MODE command.

Some issues occurred on 48 port Rapier series switches when MAC

addresses were learned and then relearned on a different port. These issues

have been resolved.

Tagged ports did not tag packets received from the bridge before

transmitting them. This issue has been resolved.

When static port security was enabled with the RELEARN parameter in the

SET SWITCH PORT command, and a switch port was reset or unplugged,

the MAC entries were removed (unlearned) from the forwarding database

table. The MAC entries should only be removed when dynamic port

security is in use. This issue has been resolved.

PCR: 31171 Module: PORTAUTH, USER,STP Level: 2

PCR: 31174 Module: IPG Level: 2

PCR: 31179 Module: SWI Level: 3

PCR: 31180 Module: USER Level: 2

PCR: 31184 Module: SW56 Level: 2

PCR: 31185 Module: SWI Level: 2

PCR: 31190 Module: SWI, SW56 Level: 2

Patch 86261-04 For Rapier and AT-8800 Series Switches SHOW IGMPSNOOPING ROUTERADDRESS 9

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

A device in a supplicant role failed to authenticate if it used EAP-MD5

encryption with Windows 2000 or 2003 Server as the RADIUS server. Also,

a fatal error occurred if the device received EAPOL packets containing a

very large value in the packet length field. These issues have been resolved.

Syslog entries did not contain the date, time and unique identifier of the

message source. This issue has been resolved. The CREATE LOG OUTPUT

and SET LOG OUTPUT commands have been modified to control whether

or not this information is included.

The following parameter has been added to the CREATE LOG OUTPUT

and SET LOG OUTPUT commands:

[SYSLOGFORMAT=NORMAL|EXTENDED]

If the SYSLOGFORMAT parameter is set to EXTENDED the date, time and

unique identifier of message source are included in the syslog message. If

the parameter is set to NORMAL, this information is not included in the

syslog message. The default is NORMAL.

When IP multicasting was not enabled, all IP multicast packets were passed

to the CPU, causing overloading. This issue has been resolved. Now, if IP

multicasting is not enabled, these packets are not sent to the CPU.

When executing the command:

ADD IP ROUTEMAP ENTRY SET ASPATH

followed by the command:

ADD IP ROUTEMAP ENTRY COMMUNITY ADD=YES

where the values for ROUTEMAP and ENTRY were the same in both

commands, the second command failed and returned a “ROUTEMAP clause

already exists” error message. This issue has been resolved.

Fibre GBICs on Rapier and AT-8800 series switches sometimes did not

establish a link when powered on for the first time. This issue has been

resolved.

Two VRRP log messages were displayed when they should not have been.

The log messages were:

Vrrp 1: Vlan vlan2 10 Port Failed decrementing priority by 20

Vrrp 1: Vlan vlan2 1 Port up incrementing priority by 2

This issue has been resolved. These messages are now displayed at the

correct time.

PCR: 31191 Module: PORTAUTH, USER Level: 2

PCR: 31192 Module: LOG Level: 3

PCR: 31193 Module: IPG Level: 2

PCR: 31194 Module: BGP, IP Level: 3

PCR: 31201 Module: SW56, SWI Level: 2

PCR: 31205 Module: VRRP Level: 3

10 SHOW IGMPSNOOPING ROUTERADDRESS Patch Release Note

Patch 86261-04 for Software Release 2.6.1

C613-10386-00 REV D

The entry for the FanAndPs group in the private MIB did not return valid

information. This issue has been resolved.

On AT-8848 switches, a STP loop occurred if the Gigabit uplink port 49 was

in the blocking state. This issue has been resolved.

Sometimes the initialisation of fan and temperature monitoring was

delayed, and this was reported as a failure. This issue has been resolved.

The delay was temporary and is no longer reported as a failure.

Features in 86261-03

Patch file details are listed in Table 2:

Patch 86261-03 includes all issues resolved and enhancements released in

previous patches for Software Release 2.6.1, and the following enhancements:

On AT-8800 Series switches, fibre GBICs were treated like copper GBICs if

the switch had been powered off for more than one minute. This issue has

been resolved.

Features in 86261-02

Patch file details are listed in Table 3:

Patch 86261-02 includes all issues resolved and enhancements released in

previous patches for Software Release 2.6.1, and the following enhancements:

PCR: 31215 Module: SNMP Level: 4

PCR: 31221 Module: SW56 Level: 1

PCR: 31237 Module: CORE Level: 3

Table 2: Patch file details for Patch 86261-03.

Base Software Release File 86-261.rez

Patch Release Date 7-Nov-2003

Compressed Patch File Name 86261-03.paz

Compressed Patch File Size 176500 bytes

PCR: 31164 Module: SWI Level: 2

Table 3: Patch file details for Patch 86261-02.

Base Software Release File 86-261.rez

Patch Release Date 3-Nov-2003

Compressed Patch File Name 86261-02.paz

Compressed Patch File Size 384839 bytes

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