Cisco ASR 903 Release Notes

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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
Limitations and Restrictions
The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.6(2)S:
• SAToP and CESoPSN pseudowire traffic has a default MPLS Exp priority setting of 5 (high).
The limitations for this release are otherwise the same as those for IOS XE Release 3.6(2)S. For more
information, see the Limitations and Restrictions in Cisco IOS XE Release 3.6(1)S, page 2.
Limitations and Restrictions in Cisco IOS XE Release 3.6(1)S
The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.6(1)S:
Note For a summary of limitations in Release 3.5S, see the IOS XE 3.5 Release Notes.
ATM IMA Limitation
• You can create a maximum of 16 IMA groups on each T1/E1 interface module.
Bridge Domain Interface Limitation
• The mtu command is not supported on BDI interfaces; however the ip mtu command is supported.
Clocking and Timing Limitation
• 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.
EFP Limitation
• QinQ is not supported on trunk EFP interfaces.
Ethernet IM Limitations
• The Cisco ASR 903 Router does not support the Facilities Data Link (FDL) on Ethernet interfaces.
• The Cisco ASR 903 Router does not support the mac-address command on Gigabit Ethernet
interface modules.
• 10 Gigabit Ethernet interface modules are not supported in slots 4 and 5.
When you install a Gigabit Ethernet IM in the topmost interface module slot (slot 5), the last interface
(interface GigabitEthernet0/5/0) is not operational; the port is reserved for internal communication.
MLPPP Limitations
The following limitations apply when using MLPPP in IOS XE Release 3.6 on the
CiscoASR903Router:
• 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:

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English