Cisco Cisco IOS Software Release 12.2
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Caveats for Cisco IOS Release 12.2
OL-3513-16 Rev. G0
Resolved Caveats—Cisco IOS Release 12.2(3g)
Resolved Caveats—Cisco IOS Release 12.2(3g)
Cisco IOS Release 12.2(3g) is a rebuild of Cisco IOS Release 12.2(3). All caveats listed in this section
are resolved in Cisco IOS Release 12.2(3g) but may be open in previous Cisco IOS releases.
are resolved in Cisco IOS Release 12.2(3g) but may be open in previous Cisco IOS releases.
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CSCea02355
Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol
version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of
crafted IPv4 packets sent directly to the device may cause the input interface to stop processing
traffic once the input queue is full. No authentication is required to process the inbound packet.
Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not
affected. A workaround is available.
version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of
crafted IPv4 packets sent directly to the device may cause the input interface to stop processing
traffic once the input queue is full. No authentication is required to process the inbound packet.
Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not
affected. A workaround is available.
Cisco has made software available, free of charge, to correct the problem.
This advisory is available at
Resolved Caveats—Cisco IOS Release 12.2(3d)
Cisco IOS Release 12.2(3d) is a rebuild of Cisco IOS Release 12.2(3). All caveats listed in this section
are resolved in Cisco IOS Release 12.2(3d) but may be open in previous Cisco IOS releases.
are resolved in Cisco IOS Release 12.2(3d) but may be open in previous Cisco IOS releases.
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CSCdw65903
An error can occur with management protocol processing. Please use the following URL for further
information:
information:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Resolved Caveats—Cisco IOS Release 12.2(3b)
Cisco IOS Release 12.2(3b) is a rebuild release for Cisco IOS Release 12.2(3). The caveats in this section
are resolved in Cisco IOS Release 12.2(3b) but may be open in previous Cisco IOS releases.
are resolved in Cisco IOS Release 12.2(3b) but may be open in previous Cisco IOS releases.
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CSCdu38878
When an interface is cleared, the service profile identifier (SPID) is reported on the BRI network
module or WAN interface card as invalid. The SPID that is reported after the interface is cleared is
still invalid. There is no workaround.
module or WAN interface card as invalid. The SPID that is reported after the interface is cleared is
still invalid. There is no workaround.
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CSCdu59975
A glare condition may occur randomly on all voice platforms in Cisco IOS Release 12.2(1a),
12.2(2)T, and 12.2 XA when a busy port is assigned to a new incoming call. A glare condition occurs
when two calls are assigned to the same port. For example, if there are only two ports, and they are
both busy on a call when a new call comes in without a check for glare, one of the busy ports is
allocated to the new call. This condition causes the preexisting call to be disconnected and the new
call to receive a busy signal. There is no workaround.
12.2(2)T, and 12.2 XA when a busy port is assigned to a new incoming call. A glare condition occurs
when two calls are assigned to the same port. For example, if there are only two ports, and they are
both busy on a call when a new call comes in without a check for glare, one of the busy ports is
allocated to the new call. This condition causes the preexisting call to be disconnected and the new
call to receive a busy signal. There is no workaround.
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CSCdu65008
Outgoing ISDN calls fail if the connected switch responds to an outgoing setup with a setup
acknowledgement followed by a “Call Proceeding” message. This situation applies to all ISDN PRI
voice platforms and has been observed in Cisco IOS Release 12.2(1) and any later release.
acknowledgement followed by a “Call Proceeding” message. This situation applies to all ISDN PRI
voice platforms and has been observed in Cisco IOS Release 12.2(1) and any later release.