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.
Enabling and Installing this Release 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 2 9816_281-01_en_d.
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.
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.
AT-9900 AT-9800 When STP is enabled on the switch but is disabled for a trunk (by using the command disable stp port), the trunk should pass traffic. Previously, some trunk members sometimes stayed in the “discarding” state instead.
Features in 281-01 6 AT-8948 / x900-48 AT-9900 AT-9800 The Bridge cannot be configured to bridge PPPoE packets from an Ethernet 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.
CR Module Level Description AR7x5 AR750S / AR770S Rapier i AT-8800 AT-8600 AT-8700XL AT-8948 / x900-48 AT-9900 AT-9800 7 AR400 Features in 281-01 CR00011434 File 2 The router or switch sometimes rebooted when copying a very large file (several Mbytes). This issue has been resolved by improving the copy process so that it uses fewer memory buffers.
AT-9900 AT-9800 When the WAN load balancer was used with IP NAT (instead of firewall NAT), and 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.
AT-8948 / x900-48 AT-9900 AT-9800 Decrypting a large IPsec ESP packet sometimes caused the router or switch to reboot. AT-8700XL 2 AT-8600 IPsec, ENCO AT-8800 CR00012697 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 9 AR400 Features in 281-01 Y Y Y Y Y - - - - - This issue has been resolved. CR00012710 Core 2 Soft errors can generate exceptions that would cause the router or switch to reboot.
AT-8948 / x900-48 AT-9900 AT-9800 The following issues occurred with sending log messages to an asynchronous port: AT-8700XL 2 AT-8600 ASYN, Log AT-8800 CR00012846 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 10 AR400 Features in 281-01 Y Y Y Y Y Y Y Y Y Y - - - - - - - Y Y - Y Y Y Y Y Y Y Y Y Y ■ The log messages output on an asynchronous port were corrupt.
AT-9900 AT-9800 When an IPv6 accelerator card was installed, IPv6 multicast traffic was flooded to all ports in a downstream VLAN, whether or not they had joined the multicast group. AT-8948 / x900-48 2 AT-8700XL IPv6, Switch AT-8600 CR00012900 AT-8800 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 11 AR400 Features in 281-01 - - - - - - - Y Y - Y - Y - - - - - - - Y Y Y Y Y - - Y Y Y Y Y Y - - - - - - - This issue has been resolved.
AT-9900 AT-9800 When an IPv6 address was deleted on the router or switch, and that IPv6 address 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, the router or switch would reboot.
AT-9900 AT-9800 When the router or switch used PIM for multicast routing, and an IPv6 multicast client joined a group, then left it, then attempted to rejoin it, sometimes the attempt to rejoin was not successful. AT-8948 / x900-48 2 AT-8700XL PIMv6 AT-8600 CR00013529 AT-8800 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 13 AR400 Features in 281-01 Y Y Y Y Y - - Y Y Y This issue has been resolved.
AT-9900 AT-9800 An OSPF router or switch could show large numbers of entries in its 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.
AT-9900 AT-9800 When a link that had RIP configured on it went down, so that the router or switch 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.
AT-9900 AT-9800 The router or switch sometimes rebooted when it processed a large number of multicast routes that were created as the result of receiving a large amount of data from more than 500 multicast groups.
AT-9900 AT-9800 The system LED did not indicate when an internal power supply fault occurred. AT-8948 / x900-48 3 AT-8700XL Core AT-8600 CR00013243 AT-8800 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 17 AR400 Features in 281-01 - - Y - - - - - - - Y Y Y Y Y Y Y Y Y Y - - - - - - - Y Y - Y Y Y Y Y - - Y Y Y Y Y Y Y Y Y Y Y Y Y This issue has been resolved. The system LED now flashes 3 times to indicate a fault.
Features in 281-01 18 AT-9900 AT-9800 When the web-based GUI is used to add or remove ports from a port-based VLAN association on an AT-9812T switch, the icons representing alternate ports faced opposite directions. AT-8948 / x900-48 4 AT-8700XL GUI AT-8600 CR00010159 AT-8800 Description Rapier i Level AR750S / AR770S Module AR7x5 CR AR400 Level 4 - - - - - - - - - Y Y Y Y Y Y - - - - - - - - - - - - Y Y - This issue has been resolved.
AT-8948 / x900-48 AT-9900 AT-9800 The “?” help description for the enable command stated that the parameter rtelnet would “Disable the use of remote telnet to control an asyn port”.
AT-9900 AT-9800 When the router or switch was configured as an LNS and received an incoming L2TP call that was associated with a disabled PPP interface, it produced an incorrect log message. AT-8948 / x900-48 4 AT-8700XL L2TP AT-8600 CR00012916 AT-8800 Description Rapier i Level AR750S / AR770S Module AR7x5 CR 20 AR400 Features in 281-01 Y Y Y Y Y - - Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y - - Y Y Y Y Y Y Y Y Y Y Y Y Y This issue has been resolved.
Features in 281-01 21 AT-9900 AT-9800 By default, when the router receives a tagged packet on an Eth or VLAN interface and bridges it, the bridge strips out the packet’s VLAN tag.
AT-9800 CR00013109 AT-9900 Previously, a user could delete the preferred software release and the current boot configuration file (by using the command delete file), without first setting a new preferred release or boot configuration file. Therefore, it was possible to accidentally delete these files, which caused network disruptions if the router or switch restarted. If the router or switch restarted after the user had deleted the preferred release, it booted from the fallback software.