Cisco ASR 900 Series Release Notes

21
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter
Caveats in Cisco IOS XE 3.8S Releases
Workaround: There is no workaround.
• CSCub41772
Symptom: Router console is flooded with CPUHOG and EVENTLIB messages.
Conditions: The issue occurs rarely when you issue multiple interface module reset (OIRs), RSP
switchovers (SSO), or reloads while using a configuration with a high number of T1 serial links on
the OC-3 interface module.
Workaround: There is no workaround; however, the messages to not affect router functionality.
• 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.
• CSCud01908
Symptom: The show platform software object-manager fp active statistics command shows
pending objects on the Forwarding Manager (FMAN) on the forwarding processor (FP), indicating
a failure to download configurations from the Route Switch Processor (RSP) to the data plane (DP).
Conditions: Occurs when you apply a QoS shaping configuration at a high scale.
Workaround: There is no workaround.
• CSCud06772
Symptom: IPv6 neighbor discovery does not function properly after stateful switchover (SSO); the
router loses traffic and eventually recovers.
Conditions: Occurs with IPv6 traffic after stateful switchover (SSO).
Workaround: Configure software BFD sessions.
• CSCud07085
Symptom: The serial interface on the OC-3 interface module remains in a down state.
Conditions: Occurs when you migrate from T1 mode to E1 mode using the OC-3 interface module.
Workaround: Issue an interface module reset (OIR) on the OC-3 interface module.
• CSCud23647
Symptom: BDI adjacency fails on the standby RSP.
Conditions: The issue can occur during an interface module (IM) reset or router reload.
Workaround: There is no workaround.
• CSCud27333
Symptom: The router crashes continuously.
Conditions: Occurs when you issue an interface module reset (OIR) while the standby RSP is
booting.
Workaround: Do not issue an interface module reset (OIR) while the standby RSP is booting.
• CSCud29479
Symptom: The router stops applying QoS configurations.
Conditions: Occurs under the following conditions:
– An Ethernet interface is configured with a single service instance

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English