Release Notes for the Cisco ASR 900 Series Routers
New Features in Cisco IOS XE 3.9
Downloads: This chapterpdf (PDF - 193.0 KB) | Feedback

Table of Contents

New Features in CiscoIOSXE3.9S Releases

New Hardware Features in CiscoIOSXERelease 3.9(2)S

New Software Features in CiscoIOSXERelease 3.9(2)S

New Hardware Features in CiscoIOSXERelease 3.9(1a)S

New Software Features in CiscoIOSXERelease 3.9(1a)S

New Hardware Features in CiscoIOSXERelease 3.9(0)S

New Software Features in CiscoIOSXERelease 3.9(0)S

New Hardware Features in Cisco IOS XE Release 3.9(2)S

There are no new hardware features introduced in Cisco IOS XE Release 3.9(2)S.

New Software Features in Cisco IOS XE Release 3.9(2)S

There are no new software features introduced in Cisco IOS XE Release 3.9(2)S.

New Hardware Features in Cisco IOS XE Release 3.9(1a)S

Release 3.9(1) introduces support for the following hardware features:

  • GLC-FE-100EX
  • GLC-FE-100ZX
  • SFP-GE-L
  • SFP-GE-S
  • SFP-GE-Z

New Software Features in Cisco IOS XE Release 3.9(1a)S

There are no new software features introduced in Cisco IOS XE Release 3.9(1)S.

New Hardware Features in Cisco IOS XE Release 3.9(0)S

Release 3.9(0) introduces support for the following hardware features:

  • DWDM-XFP-30.33
  • DWDM-XFP-31.12
  • DWDM-XFP-31.90
  • DWDM-XFP-32.68
  • DWDM-XFP-34.25
  • DWDM-XFP-35.04
  • DWDM-XFP-35.82
  • DWDM-XFP-36.61
  • DWDM-XFP-38.19
  • DWDM-XFP-38.98v
  • DWDM-XFP-39.77
  • DWDM-XFP-40.56
  • DWDM-XFP-42.14
  • DWDM-XFP-42.94
  • DWDM-XFP-43.73
  • DWDM-XFP-44.53
  • DWDM-XFP-46.12
  • DWDM-XFP-46.92
  • DWDM-XFP-47.72
  • DWDM-XFP-48.51
  • DWDM-XFP-50.12
  • DWDM-XFP-50.92
  • DWDM-XFP-51.72v
  • DWDM-XFP-52.52
  • DWDM-XFP-54.13
  • DWDM-XFP-54.94
  • DWDM-XFP-55.75
  • DWDM-XFP-56.55
  • DWDM-XFP-58.17
  • DWDM-XFP-58.98
  • DWDM-XFP-59.79
  • DWDM-XFP-60.61
  • DWDM-XFP-C
  • DWDM-XFP-1560.61

New Software Features in Cisco IOS XE Release 3.9(0)S

Release 3.9(0) introduces support for the following software features:

  • BFD Echo Mode Hardware Offloading—BFD echo mode detects forwarding path failures on the remote system using echo packets; this release introduces support for hardware offloading of BFD echo mode packets for up to 255 sessions. The minimum supported timer value for offloaded BFD echo mode sessions is 3.3 ms. BFD echo offloading directs BFD echo packets to the high priority queue instead of the default queue. For more information about how to configure BFD, see

IP Routing: BFD Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900).

  • BGP Support for 4-byte ASN —This release introduces support for 4-byte autonomous system numbers in both the asplain format and the asdot format as described in RFC 5396. For more information, see

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_bgp/configuration/xe-3s/asr903/irg-4byte-asn.html

  • CFM Support for Trunk EFP—This release introduces support for CFM on trunk EFP interfaces. For more information about configuring EFPs, see

Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)

  • Enhanced Object Tracking—The Enhanced Object Tracking feature separates the tracking mechanism from Hot Standby Router Protocol (HSRP) in order to create a separate standalone tracking process. The tracking process is available to other IOS processes and allows tracking of other objects in addition to the interface line-protocol state. For more information, see

http://www.cisco.com/en/US/docs/ios/ios_xe/ipapp/configuration/guide/ipapp_eot_xe.html.

  • Embedded Event Manager (EEM) 4.0—Embedded Event Manager (EEM) is a distributed and customized approach to event detection and recovery offered directly in a Cisco IOS device. EEM offers the ability to monitor events and take informational, corrective, or any desired EEM action when the monitored events occur or when a threshold is reached. For more information, see

http://www.cisco.com/en/US/docs/ios-xml/ios/eem/configuration/xe-3s/eem-overview.html.

IP Routing: Protocol-Independent Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900).

  • ISO OSI Routing—This release introduces support for ISO OSI routing.
  • Link Layer Discovery Protocol—Link Layer Discovery Protocol (LLDP) is defined in the IEEE 802.1ab standard and allows a non-Cisco device to interact with a Cisco device that uses Cisco Discovery Protocol (CDP) for topology discovery. For more information, see

Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series).

  • L2VPN Protocol Support—This release introduces support for additional L2VPN protocols including L2TP and UDP. For more information, see

MPLS Layer 2 VPNs Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)

  • Microwave Adaptive Bandwidth Modulation Enhancement—This release introduces support for Adaptive Bandwidth Modulation on G.8032 and E-OAM microwave connections, which allow Ethernet switches to optimize traffic forwarding rules based on microwave link capacity. For more information, see

Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series).

  • MPLS on MLPPP Interfaces—This release introduces support for MPLS on MLPPP interfaces. For more information about configuring MPLS, see

MPLS Basic Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series).

http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.9.0S/ASR903-Chassis-SW-39.html.