Cisco OL-4015-08 Manuel d'utilisateur Page 483

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835
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(31)S
CSCef16804
Symptoms: CEF entries for an adjacency that no longer exist are not purged.
Conditions: This symptom is observed when a large number of adjacencies is configured and when
a switchover occurs.
Workaround: Enter the clear cef linecard command to purge the old entries.
CSCef18515
Symptoms: After you have entered the clear cef line command, when you enter the show ip cef
command for the RP and for a line card, the output is inconsistent.
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 is configured for Fast ReRoute.
Workaround: There is no workaround.
CSCef22069
Symptoms: On a Cisco 12000 series that functions as an egress PE router in an MPLS VPN network,
after the customer-facing Gigabit Ethernet line card is reloaded, the ingress line card that receives
an incoming VPN label with a destination with a glean adjacency (which requires an ARP) without
a BGP session may not properly complete the adjacency, causing traffic to be dropped.
Conditions: This symptom is mostly observed with static recursive route configurations. To recover
from the symptom, manually ping the interface of the CE router from the adjacent PE router.
Workaround: Configure the static ARP entries for the nexthop router that is configured in the static
recursive routes.
CSCef25686
Symptoms: A number of PVCs may become locked in an inactive state, and the following type of
error message may appear in the log:
%ATM-3-FAILREMOVEVC: ATM failed to remove VC(VCD=X, VPI=X, VCI=X) on Interface ATM
X/X/X,
(Cause of the failure: PVC removal during recreation failed)
Conditions: This symptom is observed when you change the parameters of a VC class while the PVC
is active and while you view the PVC status in the output of the show atm vc interface
interface-number command.
The symptom occurs when you change the PVC speed in a VC class via one Telnet (or console)
session and you enter the show atm vc interface interface-number command via another Telnet (or
console) session.
Workaround: To remotely resolve the symptoms, remotely initiate an HA failover or remotely reload
the affected router.
CSCef25917
Symptoms: A 4GE-SFP-LC line card may reload unexpectedly when it processes QoS traffic in a
configuration with a VLAN on a VCG that is configured with an ingress CoS.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(26)S or a later release when the resolved ARPs are deleted, for example, when routers
flap, when BGP peers do not respond, or when you enter the clear arp command. Note that the
symptom may also occur on releases earlier than Release 12.0(26)S.
The ingress CoS includes a set command for the matched class: either a police command with a set
command or a simple set command and either a set-mpls command or a set-dscp command.
Possible Workaround: Configure static ARPs.
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