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Software Maintenance Release Note
Version 281-01
for AR700, AR415S, AR450S and AR44x series routers, and
AT-8600, AT-8700XL, Rapier i, AT-8800, AT-8900, x900-48, AT-9900, and AT-9800 series switches
This software maintenance release note lists the issues addressed and enhancements made in Maintenance Version 281-01 for Software Version 2.8.1. Version
details are listed in the following table:
Models Series Release File Date Size (bytes) GUI file
AR415S, AR440S, AR441S, AR442S, AR450S AR400 5428
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Enabling and Installing this Release 2 Models Series Release File Date Size (bytes) GUI file AT-8948, x900-48FE, x900-48FE-N x900-48 89281-01.rez 26 July 2006 4786652 - AT-9924T, AT-9924SP, AT-9924T/4SP AT-9900 89281-01.rez 26 July 2006 4786652 9924_281-01_en_d.rsc AT-9812T, AT-9816GB AT-9800 sb281-01.rez 26 July 2006 3865056 9812_281-01_en_d.rsc 9816_281-01_en_d.rsc Caution: Using a maintenance version on the wrong model may cause unpredictable results, including disruption to the network. This
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Levels 3 Levels Some of the issues addressed in this Maintenance Version 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 cosme
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Features in 281-01 4 Features in 281-01 Software Maintenance Version 281-01 includes the resolved issues and enhancements in the following tables. In the tables, for each product series: ■ “Y” indicates that the resolution is available in Version 281-01 for that product series. ■ “-” indicates that the issue did not apply to that product series. Level 1 CR Module Level Description Switch 1 If an AT-9924SP had a large number of SFPs installed and had a very high level of ---- ----Y - CR00012654 t
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Features in 281-01 5 CR Module Level Description Switch 1 When STP is enabled on the switch but is disabled for a trunk (by using the ---- ---Y Y - CR00012933 command disable stp port), the trunk should pass traffic. Previously, some trunk members sometimes stayed in the “discarding” state instead. This issue has been resolved. DVMRP 1 Receiving a DVMRP Graft or Prune message occasionally caused the router or YYYY Y- - YYY CR00013025 switch to reboot. This issue has been resolved. IP Gateway, 1
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Features in 281-01 6 Level 2 CR Module Level Description Bridge 2 The Bridge cannot be configured to bridge PPPoE packets from an Ethernet YYY- ------ CR00009212 interface that has also been configured as a PPPoE interface. Previously, such a Bridge configuration would appear to succeed. However the Bridge would not bridge PPPoE packets and the router would restart when the command reset bridge was entered. This issue has been resolved. Note: if you want to bridge PPPoE packets, do not also
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Features in 281-01 7 CR Module Level Description File 2 The router or switch sometimes rebooted when copying a very large file (several YYYY YYYYYY CR00011434 Mbytes). This issue has been resolved by improving the copy process so that it uses fewer memory buffers. Switch 2 On x900-48 Series switches, when the switch used a DSCP map to remark ---- ---Y -- CR00011670 packets, it did not mark the packets correctly. This issue has been resolved. IPv6 2 For IPv6, if there were multiple equal cost mu
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Features in 281-01 8 CR Module Level Description Firewall 2 When the WAN load balancer was used with IP NAT (instead of firewall NAT), and Y - Y - ------ CR00012613 an FTP session was established to a server on the public network, the router did not correctly establish a return session. This meant data was unable to flow correctly back from the server, and the router rebooted. This issue has been resolved. Note that the WAN load balancer is not designed for use with IP NAT, because IP NATs ar
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Features in 281-01 9 CR Module Level Description IPsec, ENCO 2 Decrypting a large IPsec ESP packet sometimes caused the router or switch to YYYY Y ----- CR00012697 reboot. This issue has been resolved. Core 2 Soft errors can generate exceptions that would cause the router or switch to --Y - ------ CR00012710 reboot. Soft errors are spontaneous changes in the information stored in a digital circuit, caused by physical effects. The router or switch’s handling of such errors has been improved, so
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Features in 281-01 10 CR Module Level Description ASYN, Log 2 The following issues occurred with sending log messages to an asynchronous YYYY YYYYYY CR00012846 port: ■ The log messages output on an asynchronous port were corrupt. ■ When log messages were output to an asynchronous port, that port was (correctly) locked. However, the port remained locked after the asynchronous log output definition was destroyed, and after the log output's destination was changed from asynchronous to something
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Features in 281-01 11 CR Module Level Description IPv6, Switch 2 When an IPv6 accelerator card was installed, IPv6 multicast traffic was flooded to ---- ---Y Y - CR00012900 all ports in a downstream VLAN, whether or not they had joined the multicast group. This issue has been resolved. Switch, VLAN, 2 Under very rare circumstances, memory corruption could occur when packets Y - Y - ------ CR00012911 User were transmitted by the CPU out a switch port. This issue has been resolved. IPv6 2 RIPng (
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Features in 281-01 12 CR Module Level Description IPv6 2 When an IPv6 address was deleted on the router or switch, and that IPv6 address YYYY Y- - YYY CR00013077 had previously been learnt by a remote IPv6 node, then the router or switch would reboot if it received an ICMPv6 Neighbour Solicitation message from the remote node. This meant, for example, that if you successfully pinged an address on the router or switch, then deleted that address, then attempted to ping the old address again, t
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Features in 281-01 13 CR Module Level Description PIMv6 2 When the router or switch used PIM for multicast routing, and an IPv6 multicast YYYY Y- - YYY CR00013529 client joined a group, then left it, then attempted to rejoin it, sometimes the attempt to rejoin was not successful. This issue has been resolved. Level 3 CR Module Level Description TTY 3 Editing a text file that consisted of a very large number of lines (approaching or Y- Y- - - - YY- CR00008766 exceeding 30,000 lines) caused the r
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Features in 281-01 14 CR Module Level Description OSPF 3 An OSPF router or switch could show large numbers of entries in its YYYY YYYYYY CR00012468 retransmission lists to certain neighbours under certain conditions (for example, in a congested Frame Relay network). In some cases, the number of items in the list was larger than the number of LSAs in the database. This issue has been resolved. Also, a new NRL debugging option has been added to OSPF, to show additions to and deletions from the
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Features in 281-01 15 CR Module Level Description IP Gateway 3 When a link that had RIP configured on it went down, so that the router or switch YYYY YYYYYY CR00012786 used an alternative route, output from the command show ip route sometimes displayed incorrect information when the link came back up. When the link first comes back up, the route's RIP metric is still 16, so the alternative route is still the “best” route to the target. However, show ip route sometimes displayed a disabled ro
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Features in 281-01 16 CR Module Level Description IPv6 3 The router or switch sometimes rebooted when it processed a large number of YYYY Y- - YYY CR00013049 multicast routes that were created as the result of receiving a large amount of data from more than 500 multicast groups. This issue has been resolved. OSPF 3 A user can configure a range on an OSPF ABR, so that the ABR aggregates the YYYY YYYYYY CR00013085 network advertisements from one area into another area in the form of summary LSAs
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Features in 281-01 17 CR Module Level Description Core 3 The system LED did not indicate when an internal power supply fault occurred. --Y - ------ CR00013243 This issue has been resolved. The system LED now flashes 3 times to indicate a fault. Also, output of the show system command now reports voltages more accurately. OSPF 3 When a user changed the OSPF priority of an interface, the router or switch did YYYY YYYYYY CR00013279 not immediately perform the process to elect a Designated Router
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Features in 281-01 18 Level 4 CR Module Level Description GUI 4 When the web-based GUI is used to add or remove ports from a port-based ---- -----Y CR00010159 VLAN association on an AT-9812T switch, the icons representing alternate ports faced opposite directions. This issue has been resolved. The port icons now all have the same orientation. IPsec 4 In output of the commands show ipsec policy and show ipsec policy YYYY Y ----- CR00011311 sabundle, the value for the number of bytes currently us
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Features in 281-01 19 CR Module Level Description Remote Telnet 4 The “?” help description for the enable command stated that the parameter YYYY ------ CR00012270 rtelnet would “Disable the use of remote telnet to control an asyn port”. This issue has been resolved. The query now states that the command enable rtelnet enables remote telnet. PPP 4 Output of the command show ppp idletimer did not display the PPP interface YYYY Y- - YYY CR00012581 name. This issue has been resolved. GUI 4 The web-
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Features in 281-01 20 CR Module Level Description L2TP 4 When the router or switch was configured as an LNS and received an incoming YYYY Y- - YYY CR00012916 L2TP call that was associated with a disabled PPP interface, it produced an incorrect log message. This issue has been resolved. Log 4 When a user entered the command show log receive=ipadd, information YYYY YYYYYY CR00012946 about all IP addresses was displayed unless the user also entered the mask parameter. This issue has been resolved
