Release Notes for the Cisco ASR 900 Series Routers XE 3S

X21 Circuit Emulation Service

The X21 Circuit Emulation feature enables transporting x21 traffic over MPLS core.

For more information, see X21 CESoPSN Configuration Guide for Cisco ASR 900 Router Series

A900-RSP3 Modules

The A900-RSP3C-200 RSP module is introduced on the ASR 902 and the ASR 903 Series Routers.

Note The 2-port 40 Gigabit Ethernet QSFP Interface Module (2X40 GE) is not supported on ASR 902 Series Router in Cisco IOS XE 3.18 Release.

For information on installation, see:

• Cisco ASR 903 Series Aggregation Services Router Hardware Installation Guide
• Cisco ASR 902 Aggregation Services Router Hardware Installation Guide

DC Power Supply

The A900-PWR1200-D power supply is introduced on the ASR 902 Series Router.

• For information on installation, see Cisco ASR 902 Aggregation Services Router Hardware Installation Guide

AC Power Supply

The A900-PWR1200-A power supply is introduced on the ASR 902 Series Router.

For information on installation, see Cisco ASR 902 Aggregation Services Router Hardware Installation Guide

Blank Deflector (A900-IMA-BLNK-DEF)

The A900-IMA-BLNK-DEF is a special type of blank used for empty interface module slots. Starting with Cisco IOS XE Release, this module is supported on the ASR 903 and ASR 902 routers.

For information on installation, see

• Cisco ASR 903 Series Aggregation Services Router Hardware Installation Guide
• Cisco ASR 902 Aggregation Services Router Hardware Installation Guide

GNSS Module (A900-CM-GNSS)

Starting with Cisco IOS XE Release, this module is supported on the ASR 902 router with the A900-RSP3C-200 RSP module.

For information on installation, see Cisco ASR 902 Aggregation Services Router Hardware Installation Guide

BGP PIC Support for TDM Pseudowires

Starting Cisco IOS XE Release 3.18S, BGP PIC is supported for all pseudowires on the Cisco ASR 900 RSP2 module.

Starting Cisco IOS XE Release 3.18S, BGP PIC is supported with MPLS Traffic-engineering in the core on the Cisco ASR 900 RSP1 and RSP2 modules.

For information, see Configuring Pseudowire.

Egress Marking based on Color of Traffic

Effective with Cisco IOS XE Release 3.18S, egress marking based on color of traffic is introduced on the RSP3 module. With this feature, the packets are marked such that the policer passes or drops the packets accordingly.

For more information, see Quality of Service Configuration Guidelines for Cisco ASR 900 Router Series

EtherChannel Min-Links Feature

Effective with Cisco IOS XE Release 3.18S, the EtherChannel Min-Links feature is supported on LACP EtherChannels. This feature allows you to configure the minimum number of member ports that must be in the link-up state and bundled in the EtherChannel for the port channel interface to transition to the link-up state.

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

LACP 1:1 Fast Switchover Support

Effective with Cisco IOS XE Release 3.18S, the LACP 1:1 redundancy feature provides an EtherChannel configuration with one active link and fast switchover to a hot standby link.

For this feature, the LACP EtherChannel must contain exactly two links, of which only one is active.

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

Phase Profile G8275.1

With upcoming technologies like LTE-TDD, LTE-A CoMP, LTE-MBSFN and Location-based services, eNodeBs (base station devices) are required to be accurately synchronized in time and phase. Having GNSS systems at each node is not only expensive, but also introduces vulnerabilities.

Effective with Cisco IOS XE Release 3.18S, Cisco ASR 903 routers with RSP2 module support the G.8275.1 telecom profile. This profile targets accurate time and phase distribution and requires boundary clocks at every node in the network.

For more information, see the G.8275.1 Telecom Profile document at Cisco ASR 900 Router Series Configuration Guide

L3-ATM

This feature enables the Asynchronous Transfer Mode Adaptation Layer 5 (AAL5) layer 3 termination on the interface module (IM) (T1/E1 and OC-3) cards on the Cisco ASR 903 Router.

For more information, see Asynchronous Transfer Mode Configuration Guide, Cisco IOS XE Release 3S (ASR 900 Series Routers)

Simultaneous Support of QOS Policy at Port and EFP Level

Effective with Cisco IOS XE Release 3.18S, this feature provides the flexibility to apply EFP based classification on port and PHB based classification on EFP simultaneously.

For more information, see Quality of Service Configuration Guidelines for Cisco ASR 900 Router Series

mLDP IPv6

Effective with Cisco IOS XE Release 3.18S, the MLDPv6 based MVPN configuration enables IPv6 multicast packet delivery using MPLS. This feature enables the configuration of MLDPv6 based MVPN.

For more information, see IP Multicast: Multicast Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)

STM-4 TSoP

Effective with Cisco IOS XE Release 3.18S, STM-4 TSoP is supported on ASR 900 RSP2 Module.

STM-4 TSoP is compatible with the below SFPs supported on the OC-12 interface module:

• ONS-SI-622-L2—For 40km cable length, use 2 dB attenuator; short distance use 10 dB attenuator to avoid receiver overload.
• ONS-SI-622-L1—For 40km cable length, no attenuator; short distance use 10 dB attenuator to avoid receiver overload.
• ONS-SI-622-I1—For 15km cable length, use 2 dB attenuator; short distance use 8 dB attenuator to avoid receiver overload.

For more information, see Time Division Multiplexing Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)

CEMoUDP for 32T1E1

Effective with Cisco IOS XE Release 3.18S, CEMoUDP is supported on 32 T1/E1 interface module.

For more information, see MPLS Basic Configuration Guide, Cisco IOS XE Release 3S (ASR 900 Series)

Clear Channel ATM (on OC3/STM1)

Effective with Cisco IOS XE Release 3.18S, Clear Channel ATM is supported on Cisco ASR 900 RSP2 Module.

For more information, see Asynchronous Transfer Mode Configuration Guide, Cisco IOS XE Release 3S (ASR 900 Series Routers)

Larger String for EVC VLAN Encapsulation

Effective with Cisco IOS XE Release 3.18S, you can add or remove one or more VLAN tag values for matching criteria. You can use the encapsulation dot1q add command with show run command when the encapsulation configuration command is more than the terminal width and ethernet service multi-line command is configured or if the encapsulation command is more than 255 characters.

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

Point-to-Point Protocol over Ethernet Intermediate Agent

Effective Cisco IOS-XE Release 3.18S, Point-to-Point protocol over Ethernet Intermediate Agent (PPPoE IA) is supported.

PPPoE IA helps the service provider Broadband Remote Access Server (BRAS) to distinguish between end hosts connected over Ethernet to an access switch.

For more information, see IP Routing: Protocol-Independent Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)

Ethernet Local Connect

Effective Cisco IOS XE Release 3.18S, you can connect two end points (service instances) using the Local connect (Layer 2 point to point service), which is a point to point connection.

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

Ethernet Loopback with Other Types of Encapsulation

Effective with Cisco IOS XE Release 3.18S, Ethernet loopback for default and untagged EFPS is available.

For more information, see L ayer 2 Configuration Guide, Cisco IOS XE Release (ASR 900 Series)

Asymmetric Rewrite Rules

Effective with Cisco IOS XE Release 3.18S, this feature introduces new rewrite rules for the egress direction in the EFP. You can configure asymmetric rewrite rules in both ingress and egress directions of the EFP.

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

EVPN VPWS Single Homed

Effective with Cisco IOS XE Release 3.18S, this feature is a BGP control plane solution for point-to-point services. It has the ability to forward traffic from or to one network to another using the Ethernet Segment without MAC lookup.

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

Synthetic Frame Loss Measurement (ETH-SLM)

Effective with Cisco IOS XE Release 3.18S, SLM is not supported with TEFP in access mode.

For more information, see IP SLAs Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900)

Delay and Jitter Support for SADT

Effective with Cisco IOS XE Release 3.18S, the delay and jitter are supported in service performance test.

For more information, see IP SLAs Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900)