Specifications

1377
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Conditions: This symptom is observed on a Cisco 7200 series and a Cisco 7500 series when there is
a large routing table and the ip router isis interface configuration command is configured on the
router.
Workaround: Remove the ip router isis interface configuration command from the router, and then
enter the no router isis global configuration command.
Miscellaneous
• CSCdu77394
Symptoms: When a router initiates the FTP control and data connections, the source address for each
connection is different.
Conditions: This symptom does not exist if per-destination load balancing is used. Per-destination
load balancing, however, causes some destinations to receive more traffic than others, which in turn
causes some T1s to drop packets while others are hardly used. The ip ftp source- interface interface
global configuration command affects only the control connection but not the data connection.
Workaround: Enter the no ip ftp passive global configuration command or avoid having FTP servers
initiate connections to the routers.
• CSCdz15807
Symptoms: A file that is copied from a remote server to the running configuration file using secure
file transfer (SCP) may fail with an error 26 (internal error).
Conditions: This symptom is observed if the remote server is running the Linux operating system.
Workaround: Use another file transfer method (for example, FTP).
• CSCdz18467
Symptoms: Pings that have designated forwarder (DF) bits set and packet sizes greater than 1496
bytes are dropped.
Conditions: This symptom is observed only on single-hop Multiprotocol Label Switching (MPLS)
traffic-engineered (TE) tunnels.
Workaround: There is no workaround.
• CSCdz30140
Symptoms: When creating IP version 6 (IPv6) Access Control Lists (ACLs), the following message
is displayed several times:
%Access list already exists with these parameters
In some cases, looking at the ACL indicates unwanted commands that are added, such as the
following:
permit ipv6 any any sequence 20
deny 0 any any sequence 30
These statements cannot be removed from the ACL. In other cases, lines of the ACL are modified.
If a remark is added to the ACL once, then it will be repeated in ACL several times.
Conditions: These symptoms are observed in Cisco IOS releases from Cisco IOS Release 12.0(23)S
to Cisco IOS Release 12.0(26)S. The symptoms are seen only when the router has dual gigabit route
processors (GRPs) installed and with different redundancy modes configured.
Workaround: There is no workaround.