Cisco Cisco IOS Software Release 12.4(4)T Notas de publicación
985
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(15)T
On the LNS, the lcp renegotiation always command is enabled:
vpdn-group
vpdn group name
lcp renegotiation always
On the LAC, the snmp-server trap for l2tun session command is enabled:
snmp-server enable traps l2tun session
snmp-server host
ip-address
version 2c
community
Workaround: Do no enable the debug snmp packet command when the lcp renegotiation always
command is enabled on the LSN and when the snmp-server trap for l2tun session command is
enabled on the LAC.
command is enabled on the LSN and when the snmp-server trap for l2tun session command is
enabled on the LAC.
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CSCsi89048
Symptoms: A call may be present on a backup D-channel but the Call Control Block (CCB)
information may be missing.
information may be missing.
Conditions: This symptom is observed on a Cisco platform after you have entered the isdn test l2
disconnect command on the interface for a backup D-channel.
disconnect command on the interface for a backup D-channel.
Workaround: There is no workaround.
•
CSCsj09231
Symptoms: You may not be able to establish an L2TP/IPSec connection to a router.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.4(11)T or
a release that is based on Release 12.4(11)T such as Release 12.4(11)XJ when the l2tp security
crypto-profile profile-name command is enabled.
a release that is based on Release 12.4(11)T such as Release 12.4(11)XJ when the l2tp security
crypto-profile profile-name command is enabled.
Workaround: Disable the l2tp security crypto-profile profile-name command. Then, configure a
dynamic crypto map to encrypt the L2TP traffic.
dynamic crypto map to encrypt the L2TP traffic.
Note that the symptom does not occur in earlier releases such as Release 12.4(9)T3.
Further Problem Description: When you enable the debug ppp negotiation, debug vpdn
l2x-packets, and debug l2tp all commands, the following (or a similar) output is generated when
the PPP negotiation starts after the L2TP connection has been established:
l2x-packets, and debug l2tp all commands, the following (or a similar) output is generated when
the PPP negotiation starts after the L2TP connection has been established:
ppp2 PPP: Phase is ESTABLISHING, Passive Open
ppp2 LCP: State is Listen
L2X:CEF From tunnel: Received 84 byte pak
L2TP:(Tnl47793:Sn3):CEF From tunnel: 84 byte buffer returned
ppp2 LCP: Timeout: State Listen
After this output, the debugs show that the router sends CONFREQ packets until the PPP negotiation
times out and the L2TP tunnel is torn down.
times out and the L2TP tunnel is torn down.
Resolved Caveats—Cisco IOS Release 12.4(15)T
This section describes possibly unexpected behavior by Cisco IOS Release 12.4(15)T. All the caveats
listed in this section are resolved in Cisco IOS Release 12.4(15)T. This section describes severity 1 and 2
caveats and select severity 3 caveats.
listed in this section are resolved in Cisco IOS Release 12.4(15)T. This section describes severity 1 and 2
caveats and select severity 3 caveats.
EXEC and Configuration Parser
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CSCsi53355
Symptoms: A Cisco 7200 router running Cisco IOS interim Release 12.4(13.13)T may crash.