Datasheet

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Release Notes for Cisco IOS Release 12.1E on the Catalyst 6500 and Cisco 7600 Supervisor Engine and MSFC
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Caveats
• After you remove a Cisco IOS ACL from an interface, the packets continue to be passed or dropped
as they would with the Cisco IOS ACL still attached. This problem is resolved in
Release 12.1(20)E2. (CSCec43666)
• Incorrect processing of received PIM packets causes IGMP snooping to fail. When this occurs, the
system is unable to learn the correct outbound interface for the multicast traffic. This problem is
resolved in Release 12.1(20)E2. (CSCec46892)
• With a 13-slot chassis, a bus error and reload might occur if you configure EtherChannels that
include any slot 13 ports. This problem is resolved in Release 12.1(20)E2. (CSCec49438)
Resolved General Caveats in Release 12.1(20)E
• Incorrect traffic loss occurs if you enter a shutdown command and then a no shutdown command
on a Layer 3 VLAN interface that has HSRP configured. This problem is resolved in
Release 12.1(20)E. (CSCec26522)
• With port security enabled, a memory leak might occur. This problem is resolved in
Release 12.1(20)E. (CSCec14266)
• A redundant supervisor engine might incorrectly run out of memory while in the standby state and
be unable to support a switchover. This problem is resolved in Release 12.1(20)E. (CSCec08966)
• After an RPR+ switchover, if you have configured the mls ip directed broadcast command, all
broadcast traffic is sent to the MSFC to be processed in software. This problem is resolved in
Release 12.1(20)E. (CSCec07319)
• Following a reload, a Supervisor Engine 2 with the no mls qos channel-consistency command
configured might display an erroneous “qos-card type” mismatch message for an EtherChannel and
incorrectly refuse to include some of the ports in the EtherChannel. This problem is resolved in
Release 12.1(20)E. (CSCec00966)
• With CBAC and RPR+ redundancy configured, all TCP and UPD sessions fail after a switchover to
the redundant supervisor engine. This problem is resolved in Release 12.1(20)E. (CSCeb87003)
• Some traffic that ingresses through one DFC-equipped module and egresses through another
DFC-equipped module might be dropped. This problem is resolved in Release 12.1(20)E.
(CSCeb83650)
• Multicast traffic that should be Layer 3 switched in hardware might be dropped or routed in software
on the MSFC. This problem is resolved in Release 12.1(20)E. (CSCeb80373)
• With PBR configured on an interface, if the link goes down or if you enter a clear arp command,
traffic that should be Layer 3 switched in hardware might be routed in software on the MSFC. This
problem is resolved in Release 12.1(20)E. (CSCeb78050)
• The scheduler allocate command process-time default value is too small (200 microseconds,
changed to 800 microseconds with this fix). The no scheduler allocate command does not return
the configuration to default values. These problems are resolved in Release 12.1(20)E.
(CSCeb75803)
• If you configure the mac-address-table aging-time command with a nonzero value, a static MAC
address for traffic that egresses through a DFC-equipped card might change to a dynamic MAC
address. This problem is resolved in Release 12.1(20)E. (CSCeb72014)
• With an IP multicast router directly connected to both a source and a receiver, and when the shortest
path tree (SPT) threshold is configured as infinite, (S,G) entries are deleted every minute, which may
cause packet loss about once per minute. This problem is resolved in Release 12.1(20)E.
(CSCeb30338)