Datasheet

202
Release Notes for Cisco IOS Release 12.1E on the Catalyst 6500 and Cisco 7600 Supervisor Engine and MSFC
OL-2310-11
Caveats
This problem is resolved in Release 12.1(20)E. (CSCdu53656)
• A Cisco device running IOS and enabled for the Border Gateway Protocol (BGP) is vulnerable to a
Denial of Service (DOS) attack from a malformed BGP packet. The BGP protocol is not enabled by
default, and must be configured in order to accept traffic from an explicitly defined peer. Unless the
malicious traffic appears to be sourced from a configured, trusted peer, it would be difficult to inject
a malformed packet. BGP MD5 is a valid workaround for this problem.
Cisco has made free software available to address this problem. For more details, please refer to this
advisory, available at http://www.cisco.com/warp/public/707/cisco-sa-20040616-bgp.shtml.
This problem is resolved in Release 12.1(20)E. (CSCea28131)
• When operating in truncated mode following an SFM reset, traffic might not pass through ports on
a WS-X6516-GBIC switching module because there might be no learned MAC entries in the MAC
address table for the traffic. This problem is resolved in Release 12.1(20)E. (CSCea87650)
• With ARP enabled on ATM interfaces, you might see this message:
%ALIGN-3-CORRECT: Alignment correction made
This problem is resolved in Release 12.1(20)E. (CSCea80820)
• It is possible for an invalid override-mac-address command to be accepted at boot time if you use
a configuration file from one system on another. This problem is resolved in Release 12.1(20)E.
(CSCeb83558)
• The squeeze command might cause high CPU utilization for several minutes. This problem is
resolved in Release 12.1(20)E. (CSCdz60750)
• A reload might follow receipt of a corrupt CPD packet. This problem is resolved in
Release 12.1(20)E. (CSCec25430)
• With data-link switching (DLSw) configured, Ethernet Redundancy (ER) might not work on
Inter-Switch Link (ISL) trunks. This problem is resolved in Release 12.1(20)E. (CSCec10234)
• Occasionally a bus error and reload might occur if an MPLS packet triggers the sending of an
Internet Control Message Protocol (ICMP) packet. This problem is resolved in Release 12.1(20)E.
(CSCeb27452)
• The WS-X6548-GE-TX, WS-X6548V-GE-TX, WS-X6148-GE-TX, and WS-X6148V-GE-TX
switching modules do not support ingress SPAN sources when the switch is operating in truncated
mode or in compact mode. This problem is resolved in Release 12.1(20)E. (CSCeb08796)
• The default Operation Administration and Maintenance (OAM) intercept configuration drops OAM
F5 END loopback cells. This problem is resolved in Release 12.1(20)E. (CSCdw41639)
• Service Assurance Agent (SAA) 2.1.1 returns the following message:
Latest Oper Sense: httpError for HTTP status code 200.
This problem is resolved in Release 12.1(20)E. (CSCeb64604)
• The configuration file repeatedly adds the same ACL remark, which makes the configuration file
size very large. This problem is resolved in Release 12.1(20)E. (CSCdy36082)
• Approximately one second of frame loss occurs when a previously disconnected member of a
PAGP-managed GEC is reconnected. This problem is resolved in Release 12.1(20)E. (CSCdz58247)
• If there are any open VTY lines when a RPR+ switchover occurs, these lines are displayed as “idle”
or “never” with no location indicated after the switchover. These lines cannot be cleared using the
clear line command. This problem is resolved in Release 12.1(20)E. (CSCea17268)
• When configuring RIPv2 on a router, spurious memory access may occur and tracebacks may be
generated. This problem is resolved in Release 12.1(20)E. (CSCea22843)