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Patch Release Note

Patch 86222-22

For Rapier Switches and AR800 Series

Modular Switching Routers

Introduction

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

patch 86222-22 for Software Release 2.2.2 on existing models of Rapier L3

managed switches and AR800 Series L3 modular switching routers. Patch file

details are listed in Table 1.

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

■Release Note: Software Release 2.2.2 for Rapier Switches, AR300 and

AR700 Series Routers, and AR800 Series Modular Switching Routers

(Document Number C613-10313-00 Rev A) available from

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

■Rapier Switch Documentation Set for Software Release 2.2.1 available on

the Documentation and Tools CD-ROM packaged with your switch, or

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

■AR800 Series Modular Switching Router Documentation Set for Software

Release 2.2.1 available on the Documentation and Tools CD-ROM

packaged with your switching router, 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 86222-22.

Base Software Release File 86s-222.rez

Patch Release Date 12-Dec-2002

Compressed Patch File Name 86222-22.paz

Compressed Patch File Size 957598 bytes

2Patch Release Note

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

Features in 86222-22

The firewall was blocking outbound ICMP packets when the associated

private interface had a ‘deny all’ rule. The passing of ICMP packets should

be controlled by the ICMP_FORWARDING and PING parameters. This

issue has been resolved.

This patch supersedes PCRs 02073, 02081, 02086 and 02105. In addition to

enhancements in the preceding PCRs, this PCR now also resolves the

following issues:

• If a compaction was started within 60ms of a file write commencing, the

file being written was placed in the wrong location in the file system.

This led to file corruption during subsequent compactions.

• If a file load occurred during compaction, an incomplete copy of the file

was loaded. The load also put the file into the wrong part of the file

system once the compaction had moved beyond the part of the file that

had been loaded.

• A fatal error occurred during compaction if a file was marked as deleted

when it was being transferred.

• Sometimes during compaction when the file system was erasing blocks

belonging to deleted files, one of the files was transferred rather than

deleted. However, its directory entry was deleted, so the file was not

visible with a SHOW FILE command but was visible with a SHOW

FFILE command.

• During compaction if the amount of free space was less than two erase

blocks (including the "spare" erase block), the file system erroneously

reported that a large amount of space was available for a new file due

to an underflow problem. When a new file was written it would corrupt

existing data.

• If the file system was completely full and the deletion of a single file led

to a compaction, the file system reported that it was continually

compacting. This was because it was repeatedly searching through a

linked list of file headers.

• A byte of data from FLASH was incorrectly returning the value 0xFF.

• When a file was renamed using upper case letters, the renamed file did

not appear in the file directory but did appear in FLASH. Also, if a

SHOW FFILE CHECK command was executed after renaming the file,

the file system would appear to hang. All file names must now be lower

case.

• Multiple TTY sessions could edit the same file. This caused

unpredictable behaviour when the TTY sessions closed the files.

A new command, SHOW FFILE VERIFY, has been added. This command

steps through the file system headers starting with file zero and finishing at

the end of the last reachable file. It then verifies that all FLASH locations

from the end of the last reachable file to the beginning of file zero are in an

erased state. Errors are reported as they are found.

PCR 02136 Module: FIREWALL Network affecting: No

PCR 02184 Module: FFS FILE TTY Network affecting: No

Patch 86222-22 For Rapier Switches and AR800 Series Modular Switching Routers 3

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

The source IP address in DVMRP prune and graft messages was incorrect.

This issue has been resolved.

Firewall subnet NAT rules were not working correctly from the private to

the public side of the firewall. Traffic from the public to private side

(destined for subnet NAT) was discarded. These issues have been resolved.

ICMP traffic no longer causes a RADIUS lookup for access authentication,

but is now checked by ICMP handlers for attacks and eligibility. If the ICMP

traffic matches a NAT rule, NAT will occur on inbound and outbound

traffic. HTTP 1.0 requests sometimes caused the firewall HTTP proxy to

close prematurely. Cached TCP sessions were sometimes not hit correctly.

These issues have been resolved.

When an IP Multihomed interface was used as an OSPF interface,

neighbour relationships were only established if the IP interface for OSPF

was added first in the configuration. Now, OSPF establishes neighbour

relationships regardless of the IP Multihomed interface configuration order.

The SHOW VRRP command now shows the number of trigger activations

for the Upmaster and Downmaster triggers.

DHCP RENEW request messages are now unicast (as defined in the RFC),

not broadcast.

If a problem occurred with NVS, some critical files were lost. As a result, the

equipment was forced to load only boot ROM software at boot time. This

patch combined with the new version of the boot ROM software (pr1-1.2.0

for the AR700 series) resolves this issue.

The EPORT parameter in the SHOW SWITCH L3FILTER ENTRY command

was displaying incorrectly after an issue was resolved in PCR02374. The

command now displays correctly.

DHCP entry reclaim checks are now delayed by 10 seconds if the entry is

unroutable because the interface is not up.

Support for multi-homed interfaces has been added.

Under some circumstances a fatal error occurred if a large amount of data

was pasted onto the command line. This issue has been resolved.

PCR 02192 Module: IP Network affecting: No

PCR: 02241 Module: FIREWALL Network affecting: No

PCR: 02359 Module: IPG Network affecting: No

PCR: 02395 Module: VRRP, TRG Network affecting: No

PCR: 02396 Module: DHCP Network affecting: No

PCR 02400 Module: CORE, FFS, FILE,

INSTALL, SCR

Network affecting: No

PCR 02408 Module: SWI Network affecting: No

PCR: 02427 Module: DHCP Network affecting: No

PCR: 02463 Module: DVMRP, IPG Network affecting: No

PCR 02465 Module: TTY Network affecting: No

4Patch Release Note

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

When the switch was under heavy learning load, some MAC address were

lost. This issue has been resolved.

In the ADD IP ROUTE FILTER command, when the optional parameter

INTERFACE was included, the filter was not applied to the flooding of

OSPF external LSAs. Also, in the command SHOW IP ROUTE FILTER, the

output of the interface name was truncated when the name was more than

six characters long. These issues have been resolved.

The source net mask has been removed from DVMRP prune, graft and

graft-ack messages.

Under some circumstances, multiple default routes were created for

DVMRP. This issue has been resolved.

The source mask is now always 0xffffffff in the DVMRP forwarding table.

The temporary route in the DVMRP route table was not displaying

correctly. This issue has been resolved.

An IGMP entry was erroneously added for the reserved IP address. This

issue has been resolved.

Features in 86222-21

Patch file details are listed in Table 2:

Patch 86222-21 includes all issues resolved and enhancements released in

previous patches for Software Release 2.2.2, and the following enhancements:

Locally generated ICMP messages, that were passed out through a firewall

interface because they were associated with another packet flow, had their

source address changed to that of the associated packet flow and were also

forwarded with incorrect IP checksums. This only occurred when there was

no NAT associated with the packet flow. This issue has been resolved.

PCR: 02489 Module: SWI Network affecting: No

PCR 02506 Module: OSPF, IPG Network affecting: No

PCR: 02509 Module: DVMRP Network affecting: No

PCR 02526 Module: DVMRP Network affecting: No

PCR 02538 Module: DVMRP Network affecting: No

Table 2: Patch file details for Patch 86222-21.

Base Software Release File 86s-222.rez

Patch Release Date 03-Oct-2002

Compressed Patch File Name 86222-21.paz

Compressed Patch File Size 408864 bytes

PCR: 02167 Module: FIREWALL Network affecting: No

Patch 86222-22 For Rapier Switches and AR800 Series Modular Switching Routers 5

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

Sometimes the retransmission of an FTP packet was not permitted through

the Firewall. This issue has been resolved.

VRRP returned an incorrect MAC address for an ARP request. This issue

has been resolved.

In some situations, multihomed interfaces caused the Firewall to apply

NAT and rules incorrectly when packets were received from a subnet that

was not attached to the receiving interface. This issue has been resolved.

An ARP entry for a host has been removed whenever a DHCP DISCOVER

or DHCP REQUEST message is received from the host. This allows for

clients changing ports on a switch.

The sequence number extracted from the AH and ESP header was in the

wrong endian mode, which caused an FTP error with IPSEC anti-replay.

This issue has been resolved.

When acting as a PPPoE Access Concentrator (AC), if a PPPoE client sent

discovery packets without the "host-unique" tag, the discovery packets sent

by the AC were corrupted. This issue has been resolved.

IGMP failed to create an automatic IGMP membership with no joining port

when it received multicast data that no ports were interested in, when IP

TimeToLive was set to 1 second. Also, IGMP erroneously sent a query on an

IGMP enabled IP interface even when IGMP was disabled. These issues

have been resolved.

In the ADD SWITCH L3FILTER command, the EPORT parameter

incorrectly accepted the value 62-63 as multicast and broadcast ports 63-64.

This issue has been resolved.

After a prune lifetime had expired, the interface was not joined back to the

DVMRP multicast delivery tree. This issue has been resolved.

DVMRP multicast forwarding failed to send tagged packets to a tagged

port. Packets were erroneously sent untagged to tagged ports. This issue

has been resolved.

PCR: 02236 Module: FIREWALL Network affecting: No

PCR: 02245 Module: VRRP Network affecting: No

PCR: 02327 Module: IPG/FIREWALL Network affecting: No

PCR: 02329 Module: DHCP Network affecting: No

PCR: 02332 Module: IPSEC Network affecting: No

PCR: 02343 Module: PPP Network affecting: No

PCR: 02368 Module: IPG/IGMP Network affecting: No

PCR: 02374 Module: SWI Network affecting: No

PCR: 02397 Module: DVMRP Network affecting: No

PCR: 02404 Module: IPG Network affecting: No

6Patch Release Note

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

Features in 86222-20

Patch file details for Patch 86222-20 are listed in Table 3:

Patch 86222-20 includes all issues resolved and enhancements released in

previous patches for Software Release 2.2.2, and the following enhancements:

The IGMP specific query sent by the router/switch now contains the correct

default response time of 1 second. Also, ifOutOctets in the VLAN interface

MIB now increments correctly.

If a port did not belong to an ethernet interface, or was not directly

connected to the seed port it could not receive advertised router numbers.

This issue has been resolved.

When an interface went down (or was disabled) on an AS border router, the

external routes were not removed from the routing domain. Such routes are

now removed by premature aging.

Proxy Arp can now be used on VLAN interfaces.

A fatal error sometimes occurred if a TCP session originating on the public

side of the firewall sent packets before the session was established with the

host on the private side of the firewall. This issue has been resolved.

Some FTP packets handled by the firewall were forwarded with incorrect

sequence numbers, causing FTP sessions to fail. This issue has been

resolved.

When passing 64-bit counters in an SNMP packet, only the lower 32 bits

were passed. Now the full 64 bits of the counter will be returned if all are

required.

When a TCP RST/ACK was received by a firewall interface, the packet that

was passed to the other side of the firewall lost the ACK flag, and had an

incorrect ACK number. This issue has been resolved.

Table 3: Patch file details for Patch 86222-20.

Base Software Release File 86s-222.rez

Patch Release Date 23-Aug-2002

Compressed Patch File Name 86222-20.paz

Compressed Patch File Size 397708 bytes

PCR: 01226 Module: IGMP Network affecting: Yes

PCR: 01270 Module: APPLE Network affecting: No

PCR: 01285 Module: OSPF Network affecting: No

PCR: 02024 Module: IPG Network affecting: No

PCR: 02122 Module: FIREWALL Network affecting: No

PCR: 02128 Module: FIREWALL Network affecting: No

PCR: 02150 Module: CORE, SNMP Network affecting: No

PCR: 02158 Module: FIREWALL Network affecting: No

Patch 86222-22 For Rapier Switches and AR800 Series Modular Switching Routers 7

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

The IP Filter SIZE parameter was not being applied correctly. This issue has

been resolved.

The SET IP FILTER command would not update the SIZE parameter

correctly. This issue has been resolved.

The TOS field in IP packets was not being processed by IP POLICY filters

with an identifier greater than 7. This issue has been resolved.

A feature has been added that makes pings pass from the source IP address

of the public interface to the IP address on the private interface in the

firewall.

If a port on a Rapier 48 or Rapier 48 i went down, some associated entries

were not promptly removed from the forwarding, Layer 3 and default IP

tables. This issue has been resolved.

This PCR includes the following enhancements:

• A new command, SET DHCP EXTENDID allows for multiple DHCP

clients, and handling of arbitrary client IDs on the server.

• Static DHCP entries now return to the correct state when timing out.

• DHCP entry hashes now have memory protection to prevent fatal

errors.

• DHCP client now retransmits XID correctly.

• Lost OFFER messages on the server are now handled correctly.

• The DHCP server now correctly handles DHCP clients being moved to

a different interface on the DHCP server after they’ve been allocated an

IP address.

Responses to DNS requests received by a DNS relay agent, and forwarded

to the DNS server, were returned to the requester with a source IP address

of the DNS server rather than the DNS relay agent. This issue has been

resolved.

Log messages are no longer stored in NVS.

A buffer leak occurred when a large number of flows (over 4000) were in use

and needed to be recycled. This issue has been resolved.

PCR 02161 Module: IPG Network affecting: No

PCR 02162 Module: IPG Network affecting: No

PCR 02172 Module: IPG Network affecting: No

PCR: 02174 Module: FIREWALL Network affecting: No

PCR: 02195 Module: SWI Network affecting: No

PCR: 02198 Module: DHCP Network affecting: Yes

PCR: 02203 Module: IPG Network affecting: No

PCR: 02208 Module: LOG Network affecting: No

PCR: 02214 Module: IPG Network affecting: No

8Patch Release Note

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

When the only feature licence in the feature licence file was disabled, the

licence file stored on FLASH memory did not change. This was due to a

previous enhancement in PCR 02184 which prevented existing files being

deleted before a new version was stored. This issue has been resolved.

The EPORT parameter in the ADD SWITCH L3FILTER ENTRY and SET

SWITCH L3FILTER ENTRY commands was matching multicast and

broadcast packets with software filtering. This issue has been resolved.

Some switch chip register values have been changed to improve QoS

support on Rapier G6 and Rapier G6f switches.

The PURGE IP command now resets the IP route cache counters to zero.

On a Rapier 24, adding an IP interface over a FR interface caused an

ASSERT debug fatal error. This issue has been resolved.

The ARL entry for the virtual router MAC was incorrectly showing a

numerical value. The entry now shows the CPU’s port value.

Sometimes the Firewall erroneously used NAT. This issue has been

resolved.

A dual Ethernet router was incorrectly accepting an IP address from a

DHCP server when the offered address was on the same network as the

other Ethernet interface. An error is now recorded when DHCP offers an

address that is in the same subnet as another interface.

When a ‘\n’(LF) character was received, the router/switch did not

recognise this as the termination of a command over Telnet. This issue has

been resolved.

Responses to MX record requests were not handled correctly if the preferred

name in the MX record differed from the one that was requested. This issue

has been resolved.

PCR: 02215 Module: FILE Network affecting: No

PCR: 02220 Module: SWI Network affecting: No

PCR: 02224 Module: SWI Network affecting: No

PCR: 02229 Module: IPG Network affecting: No

PCR: 02242 Module: IPG Network affecting: No

PCR: 02246 Module: VRRP Network affecting: No

PCR: 02250 Module: FIREWALL Network affecting: No

PCR: 02259 Module: DHCP, IPG Network affecting: No

PCR: 02260 Module: TTY Network affecting: No

PCR: 02262 Module: DNS Network affecting: No

Patch 86222-22 For Rapier Switches and AR800 Series Modular Switching Routers 9

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

The virtual MAC address was used as the source MAC for all packets

forwarded on an interface associated with a Virtual Router (VR). This was

confusing when multiple VRs were defined over the same interface because

only one virtual MAC address was ever used. The other virtual MAC

addresses (for the other VR's) were only used if the source IP address

matched the VR’s IP address. To avoid this confusion, the system MAC

address is now always used unless the source IP address of the packet is the

same as the VR’s IP address.

PIM or DVMRP failed to see any data if IGMP snooping was on and

DVMRP or PIM was enabled after the data stream had reached the router/

switch. This issue has been resolved.

MAC address lists were not working with Firewall rules. This issue has

been resolved.

HTTP requests from a fixed IP address were erroneously reported as a host

scan attack in the Firewall deny queue. This issue has been resolved.

Under certain circumstances, the Asyn Loopback Test failed. This issue has

been resolved.

ARL message interrupts have been re-enabled after a software table rebuild

to fix synchronisation of the software forwarding database with the

hardware table.

Some routes were not added into the OSPF route list, and therefore were not

added into the IP route table. This issue has been resolved.

The CREATE CONFIG command did not save the SOURCEPORT

parameter to the configuration file when the low value of the source port

range was set to zero. This issue has been resolved.

Existing IGMP groups were not deleted when IGMP was disabled globally

or on the associated interface. This gave the groups very high timeout

values. This issue has been resolved.

If a packet with a destination IP address equal to a VRRP IP address was

received when the router didn’t own the IP address, (because it didn’t have

an interface with that IP address) the router incorrectly tried to forward the

packet and send an ICMP “redirect” message to the source. Now, if such a

packet is received, it will be discarded and an ICMP “host unreachable”

message will be sent to the source.

PCR: 02263 Module: VRRP Network affecting: No

PCR: 02264 Module: PIM, DVMRP, SWI Network affecting: No

PCR: 02265 Module: FIREWALL Network affecting: No

PCR: 02268 Module: FIREWALL Network affecting: No

PCR: 02269 Module: DUART, TM Network affecting: No

PCR: 02274 Module: TPAD Network affecting: No

PCR: 02275 Module: OSPF Network affecting: No

PCR: 02276 Module: FIREWALL Network affecting: No

PCR: 02287 Module: IPG Network affecting: No

PCR: 02299 Module: VRRP Network affecting: No

10 Patch Release Note

Patch 86222-22 for Software Release 2.2.2

C613-10319-00 REV U

VRRP used the wrong source IP address in ICMP redirects. RFC 2338 states

that the source IP address of ICMP redirects should be the IP address that

the end host used when making its next hop routing decision. In the case of

a packet sent to a VRRP virtual MAC address, this is the primary VRRP IP

address associated with the MAC address, provided such a VR exists and is

in the master state. This issue has been resolved.

The SIZE functionality on the IP filter was not working for IP fragmented

packets. This issue has been resolved.

Features in 86222-19

Patch file details for Patch 86222-19 are listed in Table 4:

Patch 86222-19 includes all issues resolved and enhancements released in

previous patches for Software Release 2.2.2, and the following enhancements:

When OSPF was calculating routes from an AS external LSA and the AS

external router had two next hops with different metrics, the router

erroneously added two routes instead of one route with the best metric. This

issue has been resolved. Also, when the two equal cost routes were on the

same IP interface, but to different next hops, the router sent the packets to

the wrong MAC address. This issue has been resolved.

STP always transmits untagged packets. If a port does not belong to a

VLAN as an untagged port, then the port must belong to one VLAN as a

tagged port. In this case, STP should transmit VLAN tagged packets out of

the port.

The IP, MASK, and ACTION parameters could not be set with the SET IP

ROUTE FILTER command. This issue is resolved when the filter number is

specified at the start of the command, for example:

SET IP ROUTE FILTER=filter-id IP=ipadd MASK=ipadd

ACTION={INCLUDE|EXCLUDE}

where: filter-id is the filter number. Filter numbers are displayed in the

output of the SHOW IP ROUTE FILTER command.

PCR: 02304 Module: VRRP Network affecting: No

PCR: 02317 Module: IPG Network affecting: No

Table 4: Patch file details for Patch 86222-19.

Base Software Release File 86s-222.rez

Patch Release Date 11-Jun-2002

Compressed Patch File Name 86222-19.paz

Compressed Patch File Size 364584 bytes

PCR: 02018 Module: OSPF Network affecting: No

PCR: 02098 Module: STP Network affecting: No

PCR: 02123 Module: IPG Network affecting: No

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