Specifications

Features in 291-11 53
Version 291-18
C613-10488-00 REV Q
CR00018141 Switch 2 CPU utilisation could become very high under circumstances in which the
switch needed to learn a large number of entries. For example, this could
occur during a reboot when large numbers of MAC entries require learning.
This issue has been resolved.
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CR00018184 DHCP 2 Previously, the router or switch did not have a minimum length for the
Options field of DHCP messages. This conformed to RFC 2131, which states
that the length of the Options field is variable, but did not conform to RFC
1531, in which the field has a minimum length of 312 bytes.
This issue has been resolved. To maintain interoperability with pre-RFC
2131 DHCP clients, the router or switch now pads the Options field to 312
bytes if it is less than this.
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CR00018270 Switch 2 When aging out FDB MAC entries on x900-48 series switches, it was
possible for the FDB entry to be erased while there were still references to
it. This could result in L3 switched traffic with a destination MAC of 00-00-
00-00-00-00.
This issue has been resolved.
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CR00018700 OSPF 2 When a physical IP interface had multiple logical interfaces running on it
and the physical interface's status changed, OSPF only recorded the status
change of the first logical interface. For example, if the physical interface
was down and came back up, OSPF would only give the first logical
interface a status of up; it would leave the other logical interfaces down.
This issue has been resolved.
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CR00018751 Firewall 2 The firewall sometimes rebooted when using ENAPT, especially if FTP was
being run though the firewall.
This issue has been resolved.
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CR00018752 Switch 2 An AR770S router could reboot when it was processing a very heavy traffic
load in its CPU.
This issue has been resolved.
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CR Module Level Description
AR400 AR7x5 AR7x0S Rapier i Rapier w AT-8800 AT-8600 AT-8700XL x900-48 AT- 9900 AT-9800