Cisco ASR 9000 Getting Started Manual page 23

Introduction to the Cisco ASR 9000 Series Aggregation Services Router
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Flexible Ethernet
The router uses Ethernet as its transport mechanism, which offers the following:
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Per-VLAN Spanning Tree Access Gateway (PVSTAG) on Bundle Interfaces—This feature has been
extended on bundle interfaces, along with physical interfaces, to cater to an increasing number of
customers that support PVST access networks. For more information on PVSTAG, see the
Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation
Services Router L2VPN and Ethernet Services Configuration Guide.
AToM iMSG—This feature enables an interworking layer in the access network(s) to terminate all
non-Ethernet functionality and translate these connections to a Ethernet centric service which can
be terminated on the Layer 3 edge routers. For more information on interworking, see the
Implementing Point to Point Layer 2 Services module in the Cisco ASR 9000 Series Aggregation
Services Router L2VPN and Ethernet Services Configuration Guide.
Next-Generation MVPN—This feature offers more scalability for Layer 3 VPN multicast traffic and
allows point-to-multipoint Label Switched Paths (LSP) to be used to transport the multicast traffic
between PEs. For more information on Next-Generation MVPN, see the Cisco ASR 9000 Series
Aggregation Services Router MPLS Layer 3 VPN Configuration Guide.
MVPN GRE—The protocol packets received from LPTS will be accompanied with the receiving
unicast GRE tunnel interface and the VRF id of the VRF in which the GRE tunnel is configured, if,
VRF interface is a GRE tunnel. For more information on MVPN GRE, see the Cisco ASR 9000
Series Aggregation Services Router MPLS Layer 3 VPN Configuration Guide.
Multiple Group Optimization (MGO) for Virtual Router Redundancy Protocol (VRRP)— This
feature provides a solution for reducing control traffic in a deployment consisting of many
subinterfaces. For more information on MGO for VRRP, see the Cisco ASR 9000 Series Aggregation
Services Router IP Addresses and Services Configuration Guide.
Vidmon Metrics—This feature supports RTP, MDI and MPLS metrics. For more information on
Vidmon Metrics, see the Cisco ASR 9000 Series Aggregation Services Router IP Addresses and
Services Configuration Guide.
HSRPv6—This feature provides support for HSRP version 2, which provides an extended group
range of 0-4095. For more information on HSRPv6, see the Cisco ASR 9000 Series Aggregation
Services Router IP Addresses and Services Configuration Guide.
Ethernet virtual connections (EVCs)—Ethernet services are supported using individual EVCs to
carry traffic belonging to a specific service type or end user through the network. You can use
EVC-based services in conjunction with MPLS-based L2VPNs and native IEEE bridging
deployments.
Flexible VLAN classification—VLAN classification into EFPs includes single-tagged VLANs,
double-tagged VLANs (QinQ and IEEE 802.1ad), contiguous VLAN ranges, and noncontiguous
VLAN lists.
IEEE Bridging— The software supports native bridging based on IEEE 802.1Q, IEEE 802.1ad, and
QinQ VLAN encapsulation mechanisms on the router.
IEEE 802.1s Multiple Spanning Tree (MST)—MST extends the MSTP to multiple spanning trees,
providing rapid convergence and load balancing.
MST Access Gateway—This feature provides a resilient, fast-convergence mechanism for
aggregating and connecting to Ethernet-based access rings.
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
Cisco ASR 9000 Series Router Overview
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