Cisco ASR 903, Release Notes, Page: 75 / 280

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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
Caveats in Cisco IOS XE 3.6S Releases
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CSCty44345
Symptoms: The router experiences packet drops when passing 64 byte packets.
Conditions: Occurs when the router is passing 64 byte packets at the line rate on the OC-3 interface
module.
Workaround: Configure a larger packet size on the interface.
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CSCty45058
Symptoms: Some CEM groups do not function correctly.
Conditions : Occurs when you configure more than 196 CEM groups on the T1/E1 or OC-3 interface
module.
Workaround : There is no workaround; avoid configuring more than 196 CEM groups.
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CSCty45463
Symptoms: The router stops passing VPLS unicast traffic.
Conditions: Occurs after you reload the router while it is passing VPLS unicast traffic.
Workaround: Perform one of the following actions:
–
Clear the mac-address table on the affected virtual circuit (VC)
– Stop VPLS traffic until the MAC address table is cleared, then resume VPLS traffic.
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CSCty46058
Symptoms: Shutting down a static multisegment VFI causes traffic to flow in one direction.
Conditions: This issue is observed when you configure a point-to-point VFI with two static
neighbors and then shut down the VFI by using the
shutdown command.
Workaround: There is no workaround.
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CSCty48710
Symptoms: The router drops multicast packets on layer 3 interfaces.
Conditions: Occurs when you configure 63 bridge domains per port and the router sends IGMP
joins from all of the bridge domains to the same IGMP group.
Workaround: You can apply the following workarounds:
–
Applying a policy-map on each EVC can reduce the packet drops to some extent.
– Increase the default port queue size.
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CSCty49041
Symptoms: The router drops VPLS traffic on one or more virtual circuits (VCs).
Conditions: Occurs when you reload a CPE or UPE device when there approximately 100 VCs
configured between the UPE and NPE devices.
Workaround: Issue the clear xconnect command on the affected VC.
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CSCty49157
Symptoms: Some members in an IMA group do not become active even though the interface
controllers are up.
Conditions : Occurs when you perform an OIR on a remote line card or when the standby RSP
becomes the active RSP.
Workaround : There is no workaround.
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CSCty50377