Allied Telesis Switch 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  
Table 1.  
Table 1: Patch file details for Patch SB251-10.  
Base Software Release File  
Patch Release Date  
sb-251.rez  
30-May-2003  
sb251-10.paz  
104696 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
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  
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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  
Patch Release Date  
sb-251.rez  
26-May-2003  
sb251-09.paz  
100592 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
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.  
PCR: 03597  
Module: IPG  
Level: 1  
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.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
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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  
Patch Release Date  
sb-251.rez  
14-May-2003  
sb251-08.paz  
86524 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
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  
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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.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
22-Apr-2003  
sb251-07.paz  
86524 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
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 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.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
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6
Patch Release Note  
•
•
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.  
PCR: 03401  
Module: SWI  
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.  
Table 5: Patch file details for Patch SB251-06.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
10-Apr-2003  
sb251-07.paz  
79684 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
Patch SB251-06 includes all issues resolved and enhancements released in  
previous patches for Software Release 2.5.1, and the following enhancements:  
PCR: 03340  
Module: SWI, SYSR  
Level: 1  
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.  
Table 6: Patch file details for Patch SB251-05.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
31-Mar-2003  
sb251-05.paz  
71096 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches  
7
Patch SB251-05 includes all issues resolved and enhancements released in  
previous patches for Software Release 2.5.1, and the following enhancements:  
PCR: 03281  
Module: SWI  
Level: 2  
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.  
PCR: 03313  
Module: SWI  
Level: 1  
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.  
Table 7: Patch file details for Patch SB251-04.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
24 -Mar-2003  
sb251-04.paz  
71112 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
Patch SB251-04 includes all issues resolved and enhancements released in  
previous patches for Software Release 2.5.1, and the following enhancements:  
PCR: 03226  
Module: SWI  
Level: 2  
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.  
PCR: 03228  
Module: SWI  
Level: 1  
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.  
PCR: 03230  
Module: SWI  
Level: 2  
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.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
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8
Patch Release Note  
PCR: 03243  
Module: SWI  
Level: 2  
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.  
PCR: 03249  
Module: SWI  
Level: 4  
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.  
Table 8: Patch file details for Patch SB251-03.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
12-Mar-2003  
sb251-03.paz  
68784 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
Patch SB251-03 includes all issues resolved and enhancements released in  
previous patches for Software Release 2.5.1, and the following enhancements:  
PCR: 02361  
Module: SWI  
Level: 4  
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.  
PCR: 02527  
Module: TCP  
Level:3  
TCP6 did not send a TCP Reset message under some circumstances, for  
example when the Telnet server was disabled. This issue has been resolved.  
PCR: 03025  
Module: GUI  
Level:2  
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.  
PCR: 03055  
Module: SWI  
Level: 4  
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.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
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Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches  
9
PCR: 03060  
Module: CORE, SWI  
Level: 3  
Support has been added, to the MIB-2 interface MIB, for the port interface.  
This means that port counters can now be shown.  
PCR: 03066  
Module: SWI  
Level: 2  
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.  
PCR: 03071  
Module: CORE  
Level: 2  
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.  
PCR: 03079  
Module: IPG, SWI  
Level: 1  
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.  
PCR: 03088  
Module: SWI  
Level: 2  
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.  
PCR: 03105  
Module: FIREWALL  
Level: 3  
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.  
PCR: 03112  
Module: IPV6  
Level: 3  
The ADD IPV6 ND command now has a PORT parameter which means that  
it can be associated with the VLAN parameter.  
PCR: 03118  
Module: CORE  
Level: 4  
Changes have been made to the SysDescription.  
PCR: 03119  
Module: CLASSIFIER  
Level: 4  
TCP source and TCP destination ports were swapped when viewed in the  
GUI. This issue has been resolved.  
PCR: 03138  
Module: SWI  
L evel: 2  
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.  
PCR: 03141  
Module: IPG  
Level: 3  
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.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
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10  
Patch Release Note  
PCR: 03142  
Module: SWI  
Level: 1  
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.  
PCR: 03148  
Module: IPG  
Level: 3  
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.  
PCR: 03191  
Module: SWI  
Level: 1  
If two line cards were inserted in quick succession, then a software restart  
could occasionally occur. This issue has been resolved.  
PCR: 03192  
Module: SWI  
Level: 2  
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:  
Table 9: Patch file details for Patch SB251-02.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
25-Jan-2003  
sb251-02.paz  
48608 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
Patch SB251-02 includes all issues resolved and enhancements released in  
previous patches for Software Release 2.5.1, and the following enhancements:  
PCR: 02553  
Module: SWITCH  
Network affecting: No  
64 bit MIB counters were not incremented or cleared for port interfaces. This  
issue has been resolved.  
PCR: 02574  
Module: DVMRP  
Network affecting: No  
Some change actions, and the resending of prune messages were not  
operating correctly. This issue has been resolved.  
PCR: 02582  
Module: SWI  
Network affecting: No  
Pause flow control is now disabled by default on all ports. This improves  
performance of the switch when it is congested.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches  
11  
The DPORT parameter in the ADD SWITCH HWFILTER command was  
omitted when the configuration was generated. This issue has been  
resolved.  
PCR: 03023  
Module: SWI  
Network affecting: No  
The SET SWITCH PORT ACCEPTABLE command did not work correctly  
on all specified port numbers. This issue has been resolved.  
PCR: 03028  
Module: SWI  
Network affecting: No  
A warning message was generated when a slave line card was not  
initialised, and the configuration script was not loaded. This issue has been  
resolved.  
PCR: 03030  
Module: SWI  
Network affecting: No  
RIP was not operating correctly because a MAC address search returned the  
wrong port number. This issue has been resolved.  
PCR: 03031  
Module: FIREWALL  
Network affecting: No  
The ADD FIREWALL POLICY RULE command included an erroneous  
check on port ranges for non-NAT rules. This check is now restricted to  
NAT rules.  
PCR: 03034  
Module: SWI  
Network affecting: No  
Executing the SET IP INTERFACE and SET IPX INTERFACE commands on  
a SwitchBlade produced debugging output on the ASYN port. This issue  
has been resolved.  
PCR: 03037  
Module: QOS  
Network affecting: No  
A new value is now shown in the output of the SHOW QOS POLICY  
command. This is the value of the port bandwidth used when the default  
traffic class percentage bandwidth is set on a QoS Policy.  
PCR: 03039  
Module: SWITCH, IPG  
Network affecting: No  
Adding a layer 2 filter on a SwitchBlade did not block traffic to the end host  
as intended. This issue has been resolved.  
PCR: 03043  
Module: SWITCH  
Network affecting: No  
On a SwitchBlade, PCI errors occurred periodically after a line card was  
hotswapped. This issue has been resolved.  
PCR: 03047  
Module: CORE  
Network affecting: No  
The board revision number for the slave control blade was erroneously set  
to the same number as the master control blade. This issue has been  
resolved.  
PCR: 03428  
Module: STP  
Network affecting: No  
If a port belongs to an enabled STP instance, but the port has been disabled  
from STP operation with the DISABLE STP PORT command, the port will  
not respond to ARP requests. This patch implements a workaround that  
allows disabled STP ports to respond to ARP requests.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  
12  
Patch Release Note  
Features in SB251-01  
Patch file details are listed in Table 10:  
Table 10: Patch file details for Patch SB251-01.  
sb-251.rez  
Base Software Release File  
Patch Release Date  
15-Jan-2003  
sb251-01.paz  
71828 bytes  
Compressed Patch File Name  
Compressed Patch File Size  
PCR: 02555  
Module: SWI  
Network affecting: No  
Network affecting: No  
Network affecting: No  
Layer 2 filtering is now working correctly.  
PCR: 02561  
Module: SWI  
32 bit counters now only show 8 bit contents.  
PCR: 02563  
Module: SWI  
The IPM (Layer 3 Multicasting table) now updates correctly to add or delete  
the ingress linecard to control blade ports, and the control blade to egress  
linecard ports when updating forwarding.  
PCR: 02568  
Module: CORE  
Network affecting: No  
The ENABLE SYSTEM SECURITY_MODE command was enabling the  
system security mode, but after the switch was restarted the system security  
mode was disabled again. Also, when NVS was re-initialised because, for  
example a battery had been exhausted, the system could not make an SNMP  
trap. These issues have been resolved.  
PCR: 02576  
Module: SWI  
Network affecting: No  
When the DISABLE SWITCH PORT FLOW=PAUSE command was  
executed on a port or ports, they would still appear to be enabled at a higher  
level. This issue has been resolved.  
PCR: 02396  
Module: DHCP  
Network affecting: No  
DHCP RENEW request messages are now unicast (as defined in the RFC),  
not broadcast.  
PCR: 02575  
Module: SWI  
Network affecting: No  
VLAN tagged multicast packets were incorrectly being sent over untagged  
VLAN interfaces. This issue has been resolved.  
PCR: 02574  
Module: DVMRP  
Network affecting: No  
Some change actions, and the resending of prune messages were not  
operating correctly. This issue has been resolved.  
PCR: 02582  
Module: SWI  
Network affecting: No  
Pause flow control is now disabled by default on all ports. This improves  
performance of the switch when it is congested.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Patch SB251-10 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches  
13  
PCR: 02587  
Module: OSPF  
Network affecting: No  
When OSPF was enabled on startup, an OSPF interface would sometimes  
stay in the DOWN state. This issue has been resolved.  
PCR: 03001  
Module: SWI CLASSIFIER  
Network affecting: No  
The following parameters have been changed CREATE CLASSIFIER, SET  
CLASSIFIER and SHOW CLASSIFIER commands:  
•
The MACTYPE parameter has been changed to  
MACTYPE={L2UCAST|L2MCAST|L2BCAST|ANY}. This resolves  
an error with internal hardware tables.  
•
•
The number of user-specified protocols in the PROTOCOL parameter  
has been increased from three to seven.  
The minimum value of the IPXDADDRESS parameter has been  
decreased from 10000000 to 00000001.  
PCR: 03006  
Module: SWI  
Network affecting: No  
An issue which sometimes resulted in a broadcast storm within the internal  
ports on the SwitchBlade, a reduction in bandwidth, and a loss of pinging  
has been resolved.  
PCR: 3008  
Module: SWI  
Network affecting: No  
An issue which caused pings to fail when a control card was inserted in the  
left hand slot to act as a slave, has been resolved.  
PCR: 03014  
Module: IPG, SWI  
Network affecting: No  
Support has been added to allow for multicasting to any number of  
overlapping VLANs up to the maximum number of multicast forwarding  
entries.  
PCR: 03018  
Module: SWI  
Network affecting: No  
An issue with pings failing after network host routes disappeared from the  
switch due to an IP hashing error has been resolved.  
PCR: 03020  
Module: SWI  
Network affecting: No  
An issue with an interrupt occurring when waiting on the MDIO which  
caused the MDIO to read or write incorrect information has been resolved.  
PCR: 03021  
Module: SWI  
Network affecting: No  
Ping would sometimes not work correctly after a 48 line card was extracted,  
and after a restart reboot. This issue has been resolved.  
Availability  
Patches can be downloaded from the Software Updates area of the Allied  
Telesyn web site at www.alliedtelesyn.co.nz/support/updates/patches.html. A  
licence or password is not required to use a patch.  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  
14  
Patch Release Note  
Patch SB251-10 for Software Release 2.5.1  
C613-10361-00 REV J  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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