Allied Telesis SB251-10 User Manual

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
Tabl e 1 .

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

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.

.

Simply connecting the world

2 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.

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:

PCR: 03335 Module: SWI Level: 2

Broadcast Storm rate limiting was not limiting broadcast packets when
these were set per-VLAN. This issue has been resolved.

PCR: 03399 Module: STP Level: 4

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.

PCR: 03428 Module: STP Level: 2

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.

PCR: 03608 Module: SWI, STP Level: 3

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.

PCR: 03612 Module: SWI, STP Level: 2

Rapid STP was not interacting correctly with trunk groups. This issue has
been resolved.

Patch SB251-10 for Software Release 2.5.1

C613-10361-00 REV J

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 3

Features in SB251-09

Patch file details are listed in Table 2:

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

Patch SB251-09 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 02577 Module: IPG, LOG Level: 4

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.

PCR: 03295 Module: IP Level: 1

IP ARP entries were not being written to the hardware route table. This
issue has been resolved.

PCR: 02518 Module: SWI Level: 1

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.

PCR: 03596 Module: SWI Level: 1

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.

Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J

PCR: 03597 Module: IPG Level: 1

The ARP table was sometimes not updated when an ARP Reply was
re ce ived on a S witchB la de port in resp on se to an A RP Request. This issue has
been resolved.

4 Patch Release Note

Features in SB251-08

Patch file details are listed in Table 3:

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

Patch SB251-08 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 03251 Module: SWI Level: 2

A fatal error occurred when the ADD SWITCH TRUNK command specified
an invalid port. This issue has been resolved.

PCR: 03414 Module: SWI Level: 2

A fatal error occurred when removing a line card from a SwitchBlade if STP
was enabled. This issue has been resolved.

PCR: 03466 Module: SWI Level: 2

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.

PCR: 03470 Module: SWI Level: 2

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.

PCR: 03509 Module: SWI Level: 2

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.

PCR: 03518 Module: SWI Level: 3

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.

Patch SB251-10 for Software Release 2.5.1

C613-10361-00 REV J

Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches 5

Features in SB251-07

Patch file details are listed in Table 4:

Table 4: Patch file details for Patch SB251-07.

Base Software Release File

Patch Release Date

Compressed Patch File Name

Compressed Patch File Size

sb-251.rez

22-Apr-2003

sb251-07.paz

86524 bytes

Patch SB251-07 includes all issues resolved and enhancements released in
previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 03399 Module: STP, SWI Level: 1

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 PO RT p ar ameter of the CRE ATE SWITCH TR UNK PORT and A DD
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.

Patch SB251-10 for Software Release 2.5.1
C613-10361-00 REV J