Cisco Cisco IOS Software Release 12.4(23) Notas de publicación
718
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(5a)
Protocol Translation
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CSCei15942
Symptoms: You may not be able to download a complete file from an FTP during a V.120 session.
Conditions: This symptom is observed on a Cisco AS5400 and Cisco AS5850 that runs Cisco IOS
Release 12.2(15)ZK6 or Release 12.3(11)T5. The symptom could also occur in other releases such
as Release 12.3 or Release 12.4.
Release 12.2(15)ZK6 or Release 12.3(11)T5. The symptom could also occur in other releases such
as Release 12.3 or Release 12.4.
Workaround: This problem can be circumvented by disabling the negotiation of multilink on the
client adapter or the router. Alternatively, configuring ppp multilink queue depth fifo 10 on the
Virtual-Template interface should allow for a successful FTP download.
client adapter or the router. Alternatively, configuring ppp multilink queue depth fifo 10 on the
Virtual-Template interface should allow for a successful FTP download.
TCP/IP Host-Mode Services
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CSCsb51019
Symptoms: A TCP session does not time out but is stuck in the FINWAIT1 state and the following
error message is generated:
error message is generated:
%TCP-6-BADAUTH: No MD5 digest from x.x.x.x to y.y.y.y(179) (RST)
Conditions: This symptom is observed on a Cisco 12000 series that is configured for BGP and that
is connected to a third-party vendor router after the BGP authentication password is changed on the
Cisco 12000 series.
is connected to a third-party vendor router after the BGP authentication password is changed on the
Cisco 12000 series.
Workaround: There is no workaround.
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CSCsc39357
Symptoms: A Cisco router may drop a TCP connection to a remote router.
Conditions: This symptom is observed when an active TCP connection is established and when data
is sent by the Cisco router to the remote router at a much faster rate than what the remote router can
handle, causing the remote router to advertise a zero window. Subsequently, when the remote router
reads the data, the window is re-opened and the new window is advertised. When this situation
occurs, and when the Cisco router has saved data to TCP in order to be send to the remote router,
the Cisco router may drop the TCP connection.
is sent by the Cisco router to the remote router at a much faster rate than what the remote router can
handle, causing the remote router to advertise a zero window. Subsequently, when the remote router
reads the data, the window is re-opened and the new window is advertised. When this situation
occurs, and when the Cisco router has saved data to TCP in order to be send to the remote router,
the Cisco router may drop the TCP connection.
Workaround: Increase the window size on both ends to alleviate the symptom to a certain extent. On
the Cisco router, enter the ip tcp window-size bytes command. When you use a Telnet connection,
reduce the screen-length argument in the terminal length screen-length command to 20 or 30 lines.
the Cisco router, enter the ip tcp window-size bytes command. When you use a Telnet connection,
reduce the screen-length argument in the terminal length screen-length command to 20 or 30 lines.
Further Problem Description: BGP in Cisco IOS Release 12.0S and Release 12.4 is not affected
because the retransmit timeout is disabled for BGP in these releases.
because the retransmit timeout is disabled for BGP in these releases.
Wide-Area Networking
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CSCej73049
Symptoms: AAA method may fail on calls in the Cisco IOS 12.3(11)T releases.
Conditions: This symptom was observed on a Cisco AS5850 that was running Cisco IOS
Release 12.3(11)T8 but is not platform dependent.
Release 12.3(11)T8 but is not platform dependent.
Workaround: There is no workaround.