Limitations And Restrictions In Cisco Ios Xe Release 3.7(3)S; Limitations And Restrictions In Cisco Ios Xe Release 3.7(2)S; Limitations And Restrictions In Cisco Ios Xe Release 3.7(1)As; Limitations And Restrictions In Cisco Ios Xe Release 3.7(0)S - Cisco ASR 903 Release Notes

Limitations and Restrictions

Limitations and Restrictions in Cisco IOS XE Release 3.7(3)S

There are no changes in limitations and restrictions in Cisco IOS XE Release 3.7(3)S; the restrictions
from IOS XE Release 3.7(2)S still apply.

Limitations and Restrictions in Cisco IOS XE Release 3.7(2)S

The following limitations and restrictions apply to Cisco IOS XE Release 3.7(2)S for the
Cisco ASR 903 Router:
•
•

Limitations and Restrictions in Cisco IOS XE Release 3.7(1)aS

There are no changes in limitations and restrictions in Cisco IOS XE Release 3.7(1)aS; the restrictions
from IOS XE Release 3.7(0)S still apply.

Limitations and Restrictions in Cisco IOS XE Release 3.7(0)S

The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.7(0)S:
ATM IMA Limitation
•
Bridge Domain Interface Limitation
•
Clocking and Timing Limitation
•
•
EFP Limitation
•
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
2
LFA FRR Limitations—Release 3.7.2 has the following limitations for Loop Free Alternate
Fast-reroute (LFA FRR):
To enable LFA FRR, you must include the mpls ldp explicit-null command. The implicit-null
–
command is not supported.
LFA FRR is not supported with equal cost multipath (ECMP).
–
The ASR 903 supports up to 4000 LFA FRR routes.
–
Remote LFA tunnels are not HA aware; hence they are SSO co-existent but not SSO compliant.
–
The restrictions from IOS XE Release 3.7(0)S apply to Release 3.7(2). For more information, see
Limitations and Restrictions in Cisco IOS XE Release 3.7(0)S, page
You can create a maximum of 16 IMA groups on each T1/E1 interface module.
The mtu command is not supported on BDI interfaces; however the ip mtu command is supported.
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.
Synchronous Ethernet clock sources are not supported with PTP. Conversely, PTP clock sources are
not supported with synchronous Ethernet. However, you can use hybrid clocking to allow the router
to obtain frequency using Synchronous Ethernet and phase using PTP.
QinQ is not supported on trunk EFP interfaces.
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