Limitations And Restrictions In Cisco Ios Xe Release 3.6S - Cisco ASR 903 Release Notes

Limitations and Restrictions
•

Limitations and Restrictions in Cisco IOS XE Release 3.6S

The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.6S:
For a summary of limitations in Release 3.5S, see the
Note
EFP Limitation
•
QoS Limitations
For a description of QoS features and limitations on the Cisco ASR 903 Router in release 3.6S, see
http://www.cisco.com/en/US/docs/wireless/asr_900/software/guide/chassis/Release3.6.0S/ASR903-Ch
assis-SW-36.html.
MLPPP Limitations
The following limitations apply when using MLPPP in IOS XE Release 3.6 on the
Cisco ASR 903 Router:
•
•
•
•
•
•
•
•
ATM IMA Limitation
•
Clocking and Timing Limitation
•
Ethernet IM Restrictions
•
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
4
Bit error rate test (BERT) patterns have limited support—Currently, only the 2^11, 2^15,
2^20-O153, and 2^20-QRSS patterns are supported for BERT.
QinQ is not supported on trunk EFP interfaces.
All links in an MLPPP bundle must be on the same interface module.
All links in an MLPPP bundle must be of the same bandwidth.
The Cisco ASR 903 Router supports a maximum of 8 links per bundle
To change the MLPPP bundle fragmentation mode between enabled and disabled, perform a
shutdown/no shutdown on the bundle.
LFI is not supported
Multiclass MLP is not supported
The Cisco ASR 903 Router supports MLPPP statistics with the following limitations:
Packet counters on the bundle display the number of fragments rather than packets.
–
Control packets are accounted on the bundle.
–
If you increase the maximum transmission unit (MTU) size on an MLPPP interface to a value higher
than the maximum received reconstructed unit (MRRU) value on the peer interface, this can bring
the MLPPP tunnel down. To restore the tunnel, perform a shutdown/no shutdown on the interface.
You can create a maximum of 16 IMA groups on each T1/E1 interface module.
Only a single clocking input source can be configured within each group of eight ports (0-7 and
8-15) on the T1/E1 interface module using the network-clock input-source command.
The Cisco ASR 903 Router does not support the Facilities Data Link (FDL) on Ethernet interfaces.
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
IOS XE 3.5 Release Notes.
OL-26630-08