Specifications

1262
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S5
• CSCeg12649
Symptoms: On a Cisco router that functions as an egress PE router in an MPLS VPN network, after
the customer-facing 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 request) 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. You can
recover from the symptom by manually pinging the interface of the CE router from the adjacent PE
router.
Workaround: Confure static ARP entries for the next hop router in the static recursive routes.
• CSCeg19635
Symptoms: The PXF engine on a Cisco 10000 series may crash, causing traffic through the router
to be interrupted temporarily.
Conditions: This symptom is observed on a Cisco 10000 series when a security ACL is changed and
immediately applied to an interface while traffic is traversing the interface. The symptom may occur
on a Cisco 10000 series that is configured with either a PRE1 or a PRE2.
Workaround: Wait several seconds between updating the ACL and applying it to the interface.
• CSCeg20771
Symptoms: During intense interaction between the RP and line cards, the RP may crash because of
a corruption. This symptom occurs when large numbers of VRFs are continuously created and
deleted. However, the trigger for the symptom to occur could be caused by something else.
Conditions: This symptom is observed on a Cisco 12410 that is configured with about 100 VRFs
and that runs Cisco IOS Release 12.0(27)S2, 12.0(28)S1, or an interim release for
Release 12.0(29)S. The symptom is not observed in Release 12.0(30)S.
Workaround: Do not add or delete more than VRFs at one time.
• CSCeg25493
Symptoms: Several VIPs may crash at about the same time because of a bus error.
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(26)S4 and that is configured with an RSP4 when the VIPs are configured for QoS but
have insufficient memory.
Workaround: Increase the amount of memory on the VIPs.
• CSCeg36748
Symptoms: The show redundancy command incorrectly indicates Peer RP is disabled during the
upgrade procedure when it is not.
Conditions: This symptom is observed on a Cisco 12000 series router that runs the gsr-p-mz image
of Cisco IOS Release 12.0(27)S and 12.0(28)S.
Workaround: Continue with the upgrade procedure.
• CSCeg37524
Symptoms: A 4-port OC-12 ATM single mode (4OC12/ATM-IR-SC) line card may generate unicast
send timeout errors, %LC-3-PSAERRS errors, and %LC-3-BMAERRS errors, which cause TDP
neighbor flapping and may cause the line card to crash.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(27)S3.
Workaround: There is no workaround.