6
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter
Caveats in Cisco IOS XE 3.12S Releases
• CSCum69866
Symptom: ONS-SC-155-EL optic is not recognized by the router when inserted in the OC-3 IM.
Conditions: This issue occurs when the ONS-SC-155-EL optic is inserted in the OC-3 IM on the
router. An error message is displayed on the console indicating that the transceiver is not supported.
The optic is not detected when the show inventory command is executed.
Workaround: There is no workaround.
• CSCum92427
Symptom: Ping fails when the ARP type is in UNKNOWN state
Conditions: This issue occurs when the Cisco ASR 903 router acts as a helper and resides between
the DHCP sever and a Cisco ASR 901 router.
Workaround: Execute the shutdown command followed by the no shutdown command on the
interface. Execute clear arp-cache command, to clear the cache.
• CSCun08534
Symptom: IGMP snooping is not supported with the IP services license, thereby breaking multicast
routing.
Conditions: This issue occurs with IP service licenses.
Workaround: Disable IGMP snooping and cause flooding of multicast packets.
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