Cisco ASR 900 Series Release Notes page 248

Caveats in Cisco IOS XE 3.9S Releases
Symptoms: classification not works properly with non-matching traffic when IP acl is used.
Conditions: This occurs only if we have classes based on acl match. only acl class will classify
properly and other classes based on dscp or class-default wont work
Workaround: No known workaround
CSCue00332
•
Symptom: BFD connections flap, bringing down IGP.
Conditions: Occurs when you enable BFD on an interface that is flapping.
Workaround: There is no workaround.
CSCue01419
•
Symptoms: EIGRP neighborship is lost on OC3IM / OC12 IM interfaces configured on port 0.
Conditions: Seen only for interfaces which are configured on port 0 of OC3IM or OC12 IM. Not
seen on ports 1,2 or 3.
Workaround: Perform a shut/no shut on interfaces configured on port 0. Alternatively remove
EIGRP and configure again.
CSCue01919
•
Symptoms: Enhancement to L2 protocol tunnelling feature to forward/drop more protocols and
reserved mac addresses that are under IEEE wellknown mac address range (0180C2000002-0F) as
a part of CE2.0 certification.
Conditions: This the L2 protocol tunnelling enhancement for CE2.0 certification.
Workaround: There is no workaround.
CSCue03418
•
Symptoms: The router displays OSPF protocol flaps causing a 20–30 second traffic loss.
Conditions: The issue occurs very intermittently on a HA system with a 6 second dead-interval
value when you issue the redundancy force-switchover command;
Workaround: Increase the dead-interval value.
CSCue05962
•
Symptoms: Cos/Vlan Classification doesn't work on port channel member links
Conditions: Apply a Cos based Qos policy on port-channel member links. All the packets will start
flowing through class default instead of getting classified on the interface. Look at the attached
console logs for configs details.
Workaround: None
CSCue07849
•
Symptoms: Link failure in L3VPN core takes a long time (in 10s of seconds) to converge even with
BGP PIC enabled.
Conditions: BGP PIC core and PIC edge is configured and there are more than one ECMP core
paths to reach backup BGP peer.
Workaround: Configure only one core path to reach both primary and repair BGP Peers in a BGP
PIC Core + Edge configuration. If these are more than one equal cost physical paths to reach BGP
peers, then adjust the configuration by increasing the distance for all paths except one.
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
52
OL-26630-12