Specifications

1261
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S5
The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security
Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple
vendors whose products are potentially affected.
• CSCef63272
Symptoms: A recursive static default route may not have an outgoing MPLS label, causing all
packets to be dropped.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.3(9) but
may also occur in other releases.
Workaround: Add a nonrecursive static route to the BGP next-hop.
• CSCef64744
Symptoms: On a 6-port channelized T3 line card that is enabled for QoS, a low latency queue (LLQ)
may not receive traffic that is mapped to the LLQ.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S1.
Workaround: Reload the line card. If this is not an option, there is no workaround.
• CSCef69631
Symptoms: All line cards may reset and may not enter the "RUN" state after a software OIR or the
primary CSC occurs on a Cisco 12000 series that has 40 GB of fabric.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of an
interim release for Cisco IOS Release 12.0(30)S. However, this caveat is resolved in
Release 12.0(30)S.
Workaround: Power cycle the router.
• CSCef97190
Symptoms: The "giants" counter increments continuously for a serial T1 interface when MR-APS
is configured on a 4-port channelized STM-1 line card. The symptom occurs even when the fiber is
pulled from the OC-3 port.
Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS
Release 12.3(7)XI1 when the serial T1 interface is in the inactive state, irrespective of whether it is
the working interface or the protect interface. The symptom does not occur when the serial T1
interface is in the active state, again irrespective of whether it is the working interface or the protect
interface. The symptom may also occur in other releases.
Workaround: There is no workaround.
• CSCeg03606
Symptoms: Multicast VPN (MVPN) traffic does not resume.
Conditions: This symptom is observed on a Cisco 12000 series that runs a Cisco IOS interim release
for Release 12.0(30)S and that functions as a PE router that is configured for MVPN.
Workaround: Enter the clear ip mroute command.
• CSCeg05681
Symptoms: A CSC OIR may cause all line cards in a router to enter the disabled state and the
standby RP to reload continuously.
Conditions: The symptom is observed on a Cisco 12000 series that has dual PRPs and that runs a
Cisco IOS interim release for Release 12.0(30)S.
Workaround: There is no workaround.