Cisco ASR 900 Series Release Notes

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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter
Caveats in Cisco IOS XE 3.8S Releases
• CSCuc66393
Symptom: The router loses OC-3 interface configurations after an ISSU upgrade.
Conditions: Occurs on OC-3 serial and POS interfaces after an ISSU software upgrade.
Workaround: There is no workaround.
• CSCuc68699
Symptom: The displays a segmentation fault error at cgmu_nq_ccm_convert and crashes.
Conditions: Occurs when you perform the following actions:
– Remove QoS policies from an EFP interface
– Remove policy-maps and class-maps associated with the QoS policy.
Workaround: There is no workaround.
• CSCuc80957
Symptom: The router crashes.
Conditions: Occurs when you rest the 10 gigabit Ethernet interface module (IM) on a
non-redundant system using the hw-module subslot reload command.
Workaround: Administratively shut down the IM before resetting the IM.
• CSCuc81334
Symptom: The router selects a clock source attached to standby RSP.
Conditions: Occurs after a stateful switchover (SSO).
Workaround: Remove and restore the clock source configuration.
• CSCuc83088
Symptom: The router drops traffic during stateful switchover (SSO).
Conditions: Occurs when the router is running HSRP or VRRP; the issue only occurs when the
destination MAC address is a virtual MAC (vMAC) address.
Workaround: Change the traffic priority and detour traffic prior to the SSO.
• CSCuc87791
Symptom: The router selects a network clock source before the wait-to-restore timer has expired.
Conditions: Occurs under the following conditions:
– A clock source fails, triggering the wait-to-restore timer (which specifies how long the before
including a restored clock source in the clock selection process.
– The clock source becomes active and fails a second time before the wait-to-restore time has
passed.
Workaround: There is no workaround; in some cases you can clear the issue by removing and
restoring the clock source configuration.
• CSCuc90006
Symptom: When you shut down a link within an Multiservice Transport Platform (MSTP) instance,
interfaces in other MSTP instances are blocked.
Conditions: Occurs when the interface in the MSTP instance is the root port.
Workaround: There is no workaround.

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English