Specifications

1220
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
• CSCed29514
Symptoms: A Cisco 7200 series NPE-G1 built-in GE (SBeth) MAC filter may accept NULL DAs
(00-00-00-00-00-00). This unintentional behavior may pose a denial of service security risk in
customer environments when their networks are flooded with NULL DAs.
Conditions: This symptom is observed when NULL DAs are presented to an NPE-G1 GE interface.
This situation may be either a third-party vendor product flaw or a third-party vendor documentation
error. (The third-party vendor documentation states that NULL DAs may be used for unused MAC
Filter entries, implying that they are not accepted.)
Workaround: There is no workaround.
• CSCed29519
Symptoms: An Engine 4+ GE line card stops forwarding Multiprotocol Label Switching (MPLS)
VPN traffic.
Conditions: This symptom occurs after Cisco Express Forwarding (CEF) on the line card is cleared.
Workaround: Enter the shutdown command followed by the no shutdown command on the line
card.
• CSCed29776
Symptoms: The traffic-shape command may disappear from the running configuration after an HA
switchover and it is not possible to reconfigure it on the newly active route processor.
Conditions: This symptom is observed when the traffic-shape command is configured on an
interface of an Engine 4+ line card on a Cisco 12000 series that has multiple route processors
installed and when an HA switchover occurs.
Workaround: Reload the router and reconfigure the traffic-shape command.
• CSCed31579
Symptoms: A SONET controller may enter the down state upon reception of an LRDI alarm, but the
controllers and interfaces at the lower levels remain up. This situation causes traffic to stop.
Conditions: This symptom is observed when an LRDI alarm is received and when only the SONET
controller goes down. The SONET controller should remain up.
Workaround: Remove the LRDI alarm. Doing so causes the SONET controller to go up, and traffic
will resume.
• CSCed32081
Symptoms: A BGP session may not be established across an Engine 2 1xOc48 SRP link.
Conditions: This symptom is observed on a Cisco 12416 router that runs the gsr-p-mz image of
Cisco IOS Release 12.0(28)S.
Workaround: There is no workaround.
• CSCed32758
Symptoms: A reload or online insertion and removal (OIR) of any line card on a Cisco 12000 series
Internet router chassis with a 1+1 Automatic Protection Switching (APS) configuration between two
CHOC-48 line cards may cause a “deadman timer expired” error. This may result in an incorrect
switch working once the line card comes up.
Conditions: This symptom is observed on a Cisco router with a channelized OC48 line card that is
running the c12kprp-p-mz image of Cisco IOS Release 12.0(24)S4.
Workaround: There is no workaround.