Cisco ASR 903 Release Notes

26
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Chapter
Caveats in Cisco IOS XE 3.7S Releases
• CSCud40930
Symptom: Some interfaces within a bridge-domain are unable to send outbound L3 multicast
traffic.
Conditions: Occurs when the bridge-domain contains EFP interfaces, some of which are on a
port-channel. The issue can also occur after a router reload.
Workaround: Issue a shutdown/no shutdown on the BDI interface.
• CSCud44768
Symptom: Multilink bundles and member links flap when passing traffic.
Conditions: Occurs under the following conditions:
– You configure more than 210 MLPPP bundles with one member link per bundle or 16 bundles
with 16 member links each.
– The line is operating at a 64 or 128 byte line rate
Workaround: There is no workaround.
• CSCud44942
Symptom: The router does not learn remote Connectivity Fault Management (CFM) Maintenance
Endpoint (MEPs).
Conditions: Occurs when you configure a MEP on an interface.
Workaround: There is no workaround.
• CSCud49980
Symptom: The router does not learn remote Connectivity Fault Management (CFM) Maintenance
Endpoint (MEPs).
Conditions: Occurs when you configure CFM MEPs on carrier edge (CE) routers and VPLS on
provider edge (PE) routers.
Workaround: Create an EVC bridge-domain running CFM on the PE router and enable a virtual
forwarding interface (VFI) on the bridge-domain.
• CSCud50851
Symptom: The router experiences flapping on REP connections.
Conditions: Occurs when you enable MAC limiting at a high scale and the set of MAC addresses
changes continuously.
Workaround: Disable MAC limiting.
• CSCud50944
Symptom: The router drops traffic on an MLPPP bundle.
Conditions: Occurs following a reload while the router is passing traffic close to the line rate. The
issue occurs less frequently with lower traffic rates.
Workaround: Issue a shutdown/no shutdown on multilink interface.
• CSCud55377
Symptom: The router crashes.
Conditions: Occurs when you configure offloaded CFM for xconnect sessions at a high scale.
Workaround: There is no workaround.

Cisco ASR 903 Specifications

General

Form Factor	Modular
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5% to 95% non-condensing
Redundancy	Yes, redundant power supplies and route processors
Operating System	Cisco IOS XE
Power Supply	AC or DC
Switching Capacity	240 Gbps
Operating Temperature	-40°C to 65°C (-40°F to 149°F)
MTBF	200, 000 hours
Supported Protocols	IPv4, IPv6, MPLS, L2VPN, L3VPN
Interfaces	Gigabit Ethernet, 10 Gigabit Ethernet, T1/E1