Cisco Cisco IOS Software Release 15.0(1)M
257
OL-20799-01 Rev. L0
Caveats
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CSCtc04016
Symptoms: Cisco IOS VoIP gateway configured for IPIPGW/CUBE may experience issues of high
CPU utilization.
CPU utilization.
Conditions: Under rare conditions the Cisco IOS gateway may get into a state where the processes
associated with SIP (as seen in show process cpu) may get into a state where they are running
extremely high causing further calls through the router to fail.
associated with SIP (as seen in show process cpu) may get into a state where they are running
extremely high causing further calls through the router to fail.
This is due to the gateway and 3rd party device in a SIP “491 Request Pending” and ACK loop. This
has been shown to occur in environments with large number of SIP REFER transfers.
has been shown to occur in environments with large number of SIP REFER transfers.
This can be seen in show sip statistics command and look for the RequestPending value showing
an high and increasing output count.
an high and increasing output count.
Workaround: There is no workaround.
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CSCtc04228
Symptoms: The mgcp behavior g729-variants static-pt command is default and will show up in
the configuration. This causes a problem when you save the configuration and downgrade to a lower
version of IOS where this behavior is not present. There the CLI will now be enabled, when it was
not previously.
the configuration. This causes a problem when you save the configuration and downgrade to a lower
version of IOS where this behavior is not present. There the CLI will now be enabled, when it was
not previously.
Conditions: Downgrade IOS with lower version will enable the CLI.
Workaround: After downgrading to a lower version where mgcp behavior g729-variants static-pt
is not the default, configure no mgcp behavior g729-variants static-pt to remove the CLI.
is not the default, configure no mgcp behavior g729-variants static-pt to remove the CLI.
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CSCtc04788
Symptoms: Hairpin calls via Cisco AS5400 failing intermittently.
Conditions: Issue has been found in c5400-is-mz.124-25.bin image.
Workaround: Reloading GW resolves issue for approximately two weeks.
Resolved Caveats—Cisco IOS Release 15.0(1)M
All the caveats listed in this section are resolved in Cisco IOS Release 15.0(1)M. This section describes
only severity 1, severity 2, and select severity 3 caveats.
only severity 1, severity 2, and select severity 3 caveats.
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CSCef82896
Symptoms: When the user name in the authentication dialog box is left blank, the router
unexpectedly reloads.
unexpectedly reloads.
Conditions: The symptom is observed when authenticating via the HTTP server. It is observed only
when a valid user name was previously configured:
when a valid user name was previously configured:
(config)#ip http authentication local
(config)#username name privilege number password password
Workaround: Do not leave the user name blank in the authentication text box, if username
authentication is enabled.
authentication is enabled.
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CSCej33698
Symptoms: A router that is running Cisco IOS software may mistakenly fail a CRC check on files
in NVRAM.
in NVRAM.
Conditions: This symptom has been observed with large files, such as large startup configurations.
Workaround: There is no workaround.