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Cisco IP Solution Center L2VPN and Carrier Ethernet User Guide, 6.0
Chapter 3 Creating a FlexUNI/EVC Ethernet Policy
Overview of FlexUNI/EVC Support in ISC
Local (local connects)
• Flexible VLAN handling mechanism that deals with up to two levels of VLAN tags:
VLAN matching for service classification. This provides the ability to match both outer and
inner VLAN tags, or the ability to match a range of inner VLAN tags.
VLAN manipulations, such as pop outer tag, pop inner tag, push outer tag, push inner tag, and
VLAN translations (1:1, 2:1, 1:2, 2:2).
• Flexible forwarding options:
Configure a pseudowire on the MPLS core directly under a service instance (for E-Line only).
Configure a pseudowire on the MPLS core under a switch virtual interface (SVI) by associating
it to a bridge domain.
Note The appropriate VLAN manipulations are applicable to pseudowire in both cases.
Associate traffic from different interfaces and/or VLANs onto a single bridge domain, with
appropriate VLAN manipulations for VPLS.
Associate traffic from different interfaces and/or VLANs onto a single bridge domain with
appropriate VLAN manipulations for local connects.
Platform Support for FlexUNI/EVC in ISC 6.0
FlexUNI/EVC services are supported on both IOS and IOS XR platforms, as detailed in the following
IOS Platform Support
The following IOS platforms are supported for the FlexUNI/EVC service:
• IOS 12.2(33)SRB and SRC
• ES20 line cards (2x10GE and 20x1GE)
• Shared Port Adaptor (SPA) Interface Processor-400 (SIP-400) line cards, version 2.0 (2x1GE and
The interfaces on the ES20 and SIP-400 line cards support the IOS EVC syntax.
Two example platform scenarios are covered in the next sections. Note that the UNI characteristics and
the FlexUNI capabilities of the N-PE are not inter-dependent.
FlexUNI/EVC service requests allow operators to add links with either a EVC-capable interface and/or
the nonEVC-capable interface on the N-PE. For example, an operator can add three links to a
FlexUNI/EVC service request (with VPLS connectivity) with the following configurations:
• Link one has a Cisco 67xx interface and an IOS 12.2 (33)SRB image on a Cisco 7600 N-PE.
• Link two has a Cisco 67xx interface and an IOS 12.2 (33)SRB image on a Cisco 7600 N-PE.
• Link three has an ES20-based interface and an IOS 12.2 (33)SRB image on a Cisco 7600 N-PE.