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5
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter
New Software Features in Cisco IOS XE Release 3.7(0)S
•
MPLS VPN—The MPLS VPN Inter-AS with ASBRs Exchanging VPN-IPv4 Addresses feature
allows a Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) to span service
providers and autonomous systems. For more information, see
http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_vpn_connect_asbr.html .
• Multicast Static MAC Addresses— Static MAC addresses allow you to enable multicast at the layer
2 level. You can use multicast static MAC addresses to forward multicast packets to specific EFPs
on a network. For more information, see
http://www.cisco.com/en/US/docs/wireless/asr_900/feature/guides/evc.html .
•
Multi-Level Priority Queues (MPQ)—This feature allows you to configure multiple priority queues
for multiple traffic classes by specifying a different priority level for each of the traffic classes in a
single service policy map. You can configure multiple service policy maps per router. Having
multiple priority queues enables the router to place delay-sensitive traffic (for example, voice) on
the outbound link before delay-insensitive traffic. As a result, high-priority traffic receives the
lowest latency possible on the router. For more information, see:
– http://www.cisco.com/en/US/docs/ios-xml/ios/qos_conmgt/configuration/xe-3s/asr903/qos-con
mgt-multilevel-pq.html
–
http://www.cisco.com/en/US/docs/ios-xml/ios/qos_conmgt/configuration/xe-3s/qos-conmgt-mul
tilevel-pq.html
• N:1 PVC mapping to PWE with non-unique VPI—This feature allows you to map one or more ATM
permanent virtual circuits (PVCs) to a single pseudowire. For more information, see
http://www.cisco.com/en/US/docs/ios-xml/ios/atm/configuration/15-2s/atm-n1pvc-mapping.html .
•
Onboard Failure Logging—The Onboard Failure Logging (OBFL) feature collects data such as
operating temperatures, hardware uptime, interrupts, and other important events and messages from
system hardware installed in a Cisco router or switch. The data is stored in nonvolatile memory and
helps technical personnel diagnose hardware problems. For more information, see
http://www.cisco.com/en/US/docs/wireless/asr_900/feature/guides/onboard_failure_logging.html.
• PTP Redundancy—PTP redundancy allows a PTP slave clock to select the best master from multiple
available master clocks based on clock quality and availability. For more information, see
http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.7.0S/ASR903-
Chassis-SW-37.html
.
•
Time of Day Selection—You can use the time of day (ToD) and 1PPS ports on the Cisco ASR 903
Series Router to exchange ToD clocking. In master mode, the router can receive time of day (ToD)
clocking from an external GPS unit; the router requires a ToD, 1PPS, and 10Mhz connection to the
GPS unit. For more information, see
http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.7.0S/ASR903-
Chassis-SW-37.html