Allied Telesis SB251-10 Instruction Manual

Simply connecting the world
Patch Release Note
Patch SB251-10
For SwitchBlade 4000 Series Switches and
AT-9800 Series Switches
Introduction
This patch release note lists the issues addressed and enhancements made in
patch SB251-10 for Software Release 2.5.1 on existing models of SwitchBlade
4000 Series Switches and AT-9800 Series Switches. Patch file details are listed in
Table 1.
This release note should be read in conjunction with the following documents:
■SwitchBlade Documentation Set for Software Release 2.5.1 (Document
Number C613-03057-00 Rev A).
■AT9800 Series Switches Documentation Set for Software Release 2.5.1
(Document Number C613-03056-00 Rev A)
■Release Note for Software Release 2.5.1 for SwitchBlade 4000 Switches and
AT-9800 Series Switches (Document Number C613-10354-00 Rev D)
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 SB251-10.
Base Software Release File sb-251.rez
Patch Release Date 30-May-2003
Compressed Patch File Name sb251-10.paz
Compressed Patch File Size 104696 bytes

2Patch Release Note
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
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 SB251-10
Patch SB251-10 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
Broadcast Storm rate limiting was not limiting broadcast packets when
these were set per-VLAN. This issue has been resolved.
Enabling STP debug on a SwitchBlade led to invalid port numbers being
displayed in the debug output. This issue has been resolved so that ports are
correctly displayed in the board.portnumber format.
Sometimes while in Rapid STP mode, a port changing its role from
Alternate to Designated or Root did not make a rapid transition to the
Forwarding state. This issue has been resolved.
The DISABLE SWITCH PORT and ENABLE SWITCH PORT commands
were not interacting correctly with trunk groups. This issue has been
resolved so that if a port in a trunk group is disabled with the DISABLE
SWITCH PORT command, the port will now be removed from its trunk
group in the hardware tables. Also, enabling a disabled trunk group port
now returns the port to its trunk group in the hardware tables.
Rapid STP was not interacting correctly with trunk groups. This issue has
been resolved.
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: 03335 Module: SWI Level: 2
PCR: 03399 Module: STP Level: 4
PCR: 03428 Module: STP Level: 2
PCR: 03608 Module: SWI, STP Level: 3
PCR: 03612 Module: SWI, STP Level: 2

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 3
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
Features in SB251-09
Patch file details are listed in Table 2:
Patch SB251-09 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
The ability to log MAC addresses whenever the ARP cache changes has
been added. To enable this, use the command:
ENABLE IP ARP LOG
To disable it, use the command:
DISABLE IP ARP LOG
The logging of MAC addresses is disabled by default. Use the SHOW LOG
command to view the MAC addresses that have been logged when the ARP
cache changes.
IP ARP entries were not being written to the hardware route table. This
issue has been resolved.
An open issue previously recorded under this PCR number has been
resolved. The first entry in the VLAN Tag table was being corrupted when
a valid L2MC table entry was incorrectly written to CAM entry 0. The
source of this VLAN Tag table corruption has been removed.
IPX routes that were added statically, or learned dynamically via RIP, were
only added to the switch instance that the route was learned for. IPX routes
are now added to all switch instances if the route is local or was added
statically. Dynamically learned routes are now added to any switch instance
with the same amount of CAM (or more) than the instance that the route
was learned on.
The ARP table was sometimes not updated when an ARP Reply was
received on a SwitchBlade port in response to an ARP Request. This issue has
been resolved.
Table 2: Patch file details for Patch SB251-09.
Base Software Release File sb-251.rez
Patch Release Date 26-May-2003
Compressed Patch File Name sb251-09.paz
Compressed Patch File Size 100592 bytes
PCR: 02577 Module: IPG, LOG Level: 4
PCR: 03295 Module: IP Level: 1
PCR: 02518 Module: SWI Level: 1
PCR: 03596 Module: SWI Level: 1
PCR: 03597 Module: IPG Level: 1

4Patch Release Note
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
Features in SB251-08
Patch file details are listed in Table 3:
Patch SB251-08 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
A fatal error occurred when the ADD SWITCH TRUNK command specified
an invalid port. This issue has been resolved.
A fatal error occurred when removing a line card from a SwitchBlade if STP
was enabled. This issue has been resolved.
System performance was low when adding large numbers of entries to
CAM. This issue has been resolved. CAM is now initialised to allow better
performance, especially for the addition of ARP and IP entries.
The DELETE SWITCH TRUNK PORT command could cause an unrelated
port to stop forwarding packets, or learn new MAC addresses. This issue
has been resolved so that unrelated ports are not affected by the trunk group
port deletion.
All IP routes were being added to all switch instances. This caused issues on
SwitchBlade line cards that did not have enough CAM to store the routes,
and the line card did not always need every route. IP routes are now only
added:
• to a switch instance if the route was learned on that instance
• if the route is for an interface
• if the route was added statically, or
• if the switch instance has a CAM which is the same size or larger than
the CAM of the switch instance that the route was learned on.
An issue exists where the CAM entry 0 in the VLAN Tag table is either not
updated or is being overwritten with invalid data. This PCR adds
debugging to trace the fault.
Table 3: Patch file details for Patch SB251-08.
Base Software Release File sb-251.rez
Patch Release Date 14-May-2003
Compressed Patch File Name sb251-08.paz
Compressed Patch File Size 86524 bytes
PCR: 03251 Module: SWI Level: 2
PCR: 03414 Module: SWI Level: 2
PCR: 03466 Module: SWI Level: 2
PCR: 03470 Module: SWI Level: 2
PCR: 03509 Module: SWI Level: 2
PCR: 03518 Module: SWI Level: 3

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 5
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
Features in SB251-07
Patch file details are listed in Table 4:
Patch SB251-07 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
With this enhancement:
• STP and Port Trunking now work together correctly.
• BDPU Forwarding is implemented. The BPDU Forwarding feature
configures the switch to forward all received STP BPDUs. Under
normal circumstances, the switch will not forward any received STP
BPDUs, even if STP is enabled.
This implementation is for standard STP, it does not guarantee that RSTP
and port trunking will work correctly together in all situations.
STP does not update the pathcost for trunked ports, which means that a
trunk group has the same pathcost as a single port. This may cause STP
Blocking where it is not expected. To overcome this, the user should
explicitly set the pathcost for the trunk group ports to be less than the
default value for a single port.
STP reconfigures if the Master port in a trunk group goes link down. If the
Master port in a trunk group goes link down, and a Non-Master port is still
link-up, then STP will go through the Listening>Learning>Forwarding
reconfiguration on the new Master port. This means that there will be a
switching outage on the trunk group whilst the new Master port transitions
to the Forwarding state.
Command handler changes:
• The PORT parameter of the CREATE SWITCH TRUNK PORT and ADD
SWITCH TRUNK PORT commands must specify ports that have
identical STP port configurations.
• The ENABLE STP and ENABLE STP PORT commands cannot be used
to enable STP operation on a port that has been disabled from STP
operation because of Port Trunking. Only the Master port in a trunk
group actively participates in the STP algorithm. Non-Master ports in
the trunk group are in the STP Disabled State.
• The output for the SHOW STP PORT command has been modifed so
that Non-Master Ports in a trunk group do not take part in the STP
algorithm.
• The output for the SHOW STP PORT command has been modified so
that it displays whether a user has set the PATHCOST value, or if it was
auto-configured.
Table 4: Patch file details for Patch SB251-07.
Base Software Release File sb-251.rez
Patch Release Date 22-Apr-2003
Compressed Patch File Name sb251-07.paz
Compressed Patch File Size 86524 bytes
PCR: 03399 Module: STP, SWI Level: 1

6Patch Release Note
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
• The PORT parameter of the SET STP PORT command specifies either all
the ports in a trunk group, or none of the ports in a trunk group.
• The STPFORWARD parameter has been added to the ENABLE
SWITCH and DISABLE SWITCH commands. If STPFORWARD is
enabled, and there is no enabled STP instance, then the switch will
forward all received BPDUs. If STPFORWARD is enabled, and an STP
instance is enabled, then STPFORWARD will be disabled by default and
a message will be generated.
• The SHOW SWITCH command now shows the status of the BPDU
Forwarding feature.
An enhancement has been made to the Test module to optimise the
reception of the loopbacked packets that are used to confirm operation of
the switch ports.
Features in SB251-06
Patch file details are listed in Table 5.
Patch SB251-06 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
After a power cycle, or a reboot command, the SwitchBlade would
occasionally repeatedly restart if it had two active controller cards. Also, the
Slave controller card would sometimes not take over if the Master controller
card failed.
Features in SB251-05
Patch file details are listed in Table 6.
PCR: 03401 Module: SWI
Table 5: Patch file details for Patch SB251-06.
Base Software Release File sb-251.rez
Patch Release Date 10-Apr-2003
Compressed Patch File Name sb251-07.paz
Compressed Patch File Size 79684 bytes
PCR: 03340 Module: SWI, SYSR Level: 1
Table 6: Patch file details for Patch SB251-05.
Base Software Release File sb-251.rez
Patch Release Date 31-Mar-2003
Compressed Patch File Name sb251-05.paz
Compressed Patch File Size 71096 bytes

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 7
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
Patch SB251-05 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
Specifying the PORT and SPEED parameters with the CREATE SWITCH
TRUNK command did not set ports in a trunk group to advertise the correct
trunk group speed and duplex mode. This issue has been resolved.
A power cycle on the switch could cause the console port to become frozen
if a port was in a link up state. If a port went into a link down state, then the
console port became unfrozen. If RESTART REBOOT or RESTART
SWITCH commands were used, then the console port functioned correctly.
This issue has been resolved.
Features in SB251-04
Patch file details are listed in Table 7.
Patch SB251-04 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
An internal misconfiguration of memory occurred when an M3 control card
and an M5 control card were installed, and the M3 control card was acting
as the Master. This could cause unexpected restarts. This issue has been
resolved.
On a 48 port line card, or a 32F card, if Port 1 went down, or was
disconnected, then traffic on Port 13 was also stopped, and vice versa. The
same issue affected other pairs of ports. This issue has been resolved.
Port speeds on trunk ports sometimes had to be set using the SET SWITCH
PORT command instead of automatically adopting the trunk group speed.
If a port was added to a trunk group and the port status was ‘up’, (that is, it
was correctly connected to another port) then the trunk group speed should
have applied to all the ports in the trunk, but it did not. Similarly, if a port
was added to a trunk group, and the port status was ‘down’, but it was later
linked correctly, then the trunk group speed should have applied to the
ports in the trunk. This issue has been resolved.
PCR: 03281 Module: SWI Level: 2
PCR: 03313 Module: SWI Level: 1
Table 7: Patch file details for Patch SB251-04.
Base Software Release File sb-251.rez
Patch Release Date 24 -Mar-2003
Compressed Patch File Name sb251-04.paz
Compressed Patch File Size 71112 bytes
PCR: 03226 Module: SWI Level: 2
PCR: 03228 Module: SWI Level: 1
PCR: 03230 Module: SWI Level: 2

8Patch Release Note
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
After autonegotiation had finished between two ports, the port on the
SwitchBlade would not show link up status when the SHOW SWITCH
PORT command was executed. The autonegotiation process is now
restarted if autonegotiation is completed and the link is shown as down.
The LEDs on line cards now continue to flash when activity exists.
Previously if a cable was connected and disconnected to Line 48 and G8
ports, with traffic being transmitted from the other end, then the LED
would stop flashing, even when there was activity on the link.
Features in SB251-03
Patch file details are listed in Table 8.
Patch SB251-03 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
The SwitchBlade mirror port field on the second instance of a switch chip
was displaying as though it was the first instance. For example, if 2.26 was
configured as the mirror port, the GUI mirror object would return 2.2. The
first chip instance was not affected. This issue has been resolved.
TCP6 did not send a TCP Reset message under some circumstances, for
example when the Telnet server was disabled. This issue has been resolved.
A buffer address was incrementing and not returning buffers for reuse
when the command line interface was accessed via the GUI interface. This
issue has been resolved.
If the SET SWITCH BLADE command was executed with the default
settings, then the default settings were added to the configuration file. The
SET SWITCH BLADE settings are now only added to the configuration file
if they differ from the default settings.
PCR: 03243 Module: SWI Level: 2
PCR: 03249 Module: SWI Level: 4
Table 8: Patch file details for Patch SB251-03.
Base Software Release File sb-251.rez
Patch Release Date 12-Mar-2003
Compressed Patch File Name sb251-03.paz
Compressed Patch File Size 68784 bytes
PCR: 02361 Module: SWI Level: 4
PCR: 02527 Module: TCP Level:3
PCR: 03025 Module: GUI Level:2
PCR: 03055 Module: SWI Level: 4

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 9
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
Support has been added, to the MIB-2 interface MIB, for the port interface.
This means that port counters can now be shown.
If a hardware filter was added to the switch, with a source VLAN and a
destination port of 1, then a host connected to the switch could not PING a
host on a different port. This issue has been resolved.
An unexpected restart that occurred when upgrading a SwitchBlade from
Release 2.4.4 to Release 2.5.1 was caused by NVS generating an SNMP trap.
This issue has been resolved.
Static routes were occasionally not added to all hardware tables across all
instances. This would affect connectivity if an instance had a default route
added to its table that pointed out one of its ports. This issue has been
resolved.
Ports could not be added to the default VLAN after a hotswap, if the default
VLAN was Protocol, Subnet, MAC address, or Limited protocol based. This
issue has been resolved.
Incorrect handling of TCP sessions, and poor load balancing performance
could be caused by TCP virtual balancers not selecting a new resource if
required. This issue has been resolved.
The ADD IPV6 ND command now has a PORT parameter which means that
it can be associated with the VLAN parameter.
Changes have been made to the SysDescription.
TCP source and TCP destination ports were swapped when viewed in the
GUI. This issue has been resolved.
Packets that were sent out a default route could have an incorrect source IP
address, if the interface route to the destination IP address existed but was
down. This issue has been resolved.
Packets could be sent with an incorrect source address if a route was added
to a VLAN and another VLAN had an IP interface configured that was in
the same subnet as the route. This issue has been resolved.
PCR: 03060 Module: CORE, SWI Level: 3
PCR: 03066 Module: SWI Level: 2
PCR: 03071 Module: CORE Level: 2
PCR: 03079 Module: IPG, SWI Level: 1
PCR: 03088 Module: SWI Level: 2
PCR: 03105 Module: FIREWALL Level: 3
PCR: 03112 Module: IPV6 Level: 3
PCR: 03118 Module: CORE Level: 4
PCR: 03119 Module: CLASSIFIER Level: 4
PCR: 03138 Module: SWI L evel: 2
PCR: 03141 Module: IPG Level: 3

10 Patch Release Note
Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J
If a BIST was run at low temperatures, for example 5 or 10 degress celcius,
on a G8 card, then a watchdog timer restart could occur. The switch now
checks for the real course of the external interrupts that occur when running
BIST.
If the Gratuitous ARP feature was enabled on an IP interface, and an ARP
packet arrived, (either ARP request, or reply) that had a Target IP address
that was equal to the SenderIP address, then the ARP cache was not
updated with the ARP packet’s source data. This issue has been resolved.
If two line cards were inserted in quick succession, then a software restart
could occasionally occur. This issue has been resolved.
When the Built-In Self Test was run, a fault would occasionally be reported
which said that a MAC address was not learnt during the loopback test.
The ports in the BIST loopback test now remain in loopback.
Features in SB251-02
Patch file details are listed in Table 9:
Patch SB251-02 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:
64 bit MIB counters were not incremented or cleared for port interfaces. This
issue has been resolved.
Some change actions, and the resending of prune messages were not
operating correctly. This issue has been resolved.
Pause flow control is now disabled by default on all ports. This improves
performance of the switch when it is congested.
PCR: 03142 Module: SWI Level: 1
PCR: 03148 Module: IPG Level: 3
PCR: 03191 Module: SWI Level: 1
PCR: 03192 Module: SWI Level: 2
Table 9: Patch file details for Patch SB251-02.
Base Software Release File sb-251.rez
Patch Release Date 25-Jan-2003
Compressed Patch File Name sb251-02.paz
Compressed Patch File Size 48608 bytes
PCR: 02553 Module: SWITCH Network affecting: No
PCR: 02574 Module: DVMRP Network affecting: No
PCR: 02582 Module: SWI Network affecting: No