Cisco Active Network Abstraction Technology Support and Information Model Reference Manual, 3.6.5
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Table Of Contents

Introduction

Supported Technologies

Networking Related IMOs

Termination Points

Forwarding Components

Conventions Used in this Guide

Scheme Values

Polling Interval Values


Introduction

This Guide outlines the level of functionality that the system provides for each supported technology.

Note This Guide describes system capabilities. The level of support provided for the VNEs for each technology may vary. See the Cisco Active Network Abstraction 3.6.5 VNE Reference Guide for details.

Supported Technologies

Table 1-1 lists the technologies supported in this version of the product.

Cisco ANA provides different level s of support for each technology. The fact that a specific technology is listed in the table below does not imply that every aspect of a relevant standard is represented and supported. For example: Cisco ANA supports PWE3 (Pseudo Wire Edge to Edge) by modeling the Cisco AToM implementation; this support does not include TDM encapsulation in Pseudo Wire over MPLS. For details on the level of support provided for each technology, please refer to the description in the specific technology chapter listed in the "Chapter Reference" column.

Table 1-1 Supported Technologies 

Family
Technology
Chapter Reference

Virtual Private Networks (VPN)

BGP-MPLS VPN Routing and Forwarding (VRF)

Chapter 14, "Virtual Private Networks (VPNs)"

Pseudo Wire Emulation Edge to Edge (PWE3)

Chapter 15, "Pseudo Wire Emulation Edge to Edge (PWE3)"

Network Layer

Internet Protocol (IP)

Chapter 2, "Internet Protocol (IP)"

Generic Routing Encapsulation (GRE)

Chapter 2, "Generic Routing Encapsulation (GRE) Tunnel Interface"

Border Gateway Protocol and its Extensions for Multi-Protocol (BGP/MP-BGP)

Chapter 3, "Routing Protocols (BGP/OSPF)"

Chapter 14, "Virtual Private Networks (VPNs)"

Open Shortest Path First (OSPF)

Chapter 3, "Routing Protocols (BGP/OSPF)"

Hot Standby Router Protocol (HSRP)

Chapter 2, "Hot Standby Router Protocol (HSRP) Group Entry"

Hybrid Network/Link Layer

Multi-Protocol Label Switching (MPLS) and its Reservation Protocol (RSVP) based Traffic Engineering (MPLS-TE)

Chapter 12, "Multiprotocol Label Switching (MPLS)" and Chapter 13, "Multi Protocol Label Switching Traffic Engineering (MPLS-TE)"

Link/MAC Layer

Ethernet, Virtual Local Area Network (VLAN), VLAN Encapsulation (Dot1Q, ISL, QinQ) and Ethernet Channel/Link Aggregation (LAG)

Chapter 4, "Ethernet (IEEE 802.3)"

Spanning Tree Protocol (STP) and its derivatives

Chapter 4, "Ethernet (IEEE 802.3)"

Asynchronous Transfer Mode (ATM) and Inverse Multiplexing for ATM (IMA)

Chapter 5, "Asynchronous Transfer Mode (ATM)"

Frame Relay (FR)

Chapter 6, "Frame Relay (FR)"

Point To Point Protocol (PPP)

Chapter 7, "Point-to-Point Protocol (PPP) and High Level Data Link Control (HDLC)"

High Level Data Link Control (HDLC)

Chapter 7, "Point-to-Point Protocol (PPP) and High Level Data Link Control (HDLC)"

Layer 2 Tunnel Protocol (L2TP)

Chapter 8, "Layer 2 Tunnel Protocol (L2TP)"

Packet Over SONET/SDH (POS)

Note This is not treated as a single technology; it is supported by a combination of IP, PPP/HDLC and Sonet.

Chapter 11, "Physical Technologies"

Access Control Lists (ACLs)

Chapter 16, "Access Control Lists (ACLs)"

Physical Layer

Digital Subscriber Line (xDSL)

Chapter 9, "Digital Subscriber Line (DSL)"

Integrated Services Digital Network (ISDN)

Chapter 10, "Integrated Services Digital Network (ISDN)"


Networking Related IMOs

Networking-related IMOs represent the networking aspects of a Network Element (NE). The two major categories of IMOs are Termination Points and Forwarding Components.

Termination Points

Termination Points represent the end points of a connection. Termination Points may represent a physical end point (for example, a port connector) or a connection end point (also referred to as a network interface, for example, an ATM layer of a port).

Termination Points are related by containment. These containment relationships are expressed by the following attributes:

•Contained Connection Termination Point—Points to all upper-layer Termination Points bound to this Termination Point.

•Containing Termination Points—Points to all lower-layer Termination Points to which this Termination Point is bound.

The relation between Termination Points may represent one of the following:

•Type of Hardware. For example:

A SONET/SDH port with a Fiber Optic connector will be represented by two IMOs:

–Port Connector IMO—Representing the Fiber Optic connector.

–SonetSdh IMO—Representing the SONET/SDH port.

The Port Connector IMO contains the SonetSdh IMO. This containment relationship will be represented as follows:

–The Port Connector IMO will point to the SonetSdh IMO with the Contained Connection Termination Point attribute.

–The SonetSdh IMO will point to the Port Connector IMO with the Containing Termination Point attribute.

•Configuration. For example:

An Ethernet port configured with an IP Address (and, optionally, other network-layer attributes) will be represented by two IMOs:

–Ethernet Interface IMO—Representing the Ethernet layer of the port.

–IP Interface IMO—Representing the network-layer aspect, including the IP address configured on the port.

The Ethernet Interface IMO contains the IP Interface IMO. This containment relationship will be represented as follows:

–The Ethernet Interface IMO will point to the IP Interface IMO with the Contained Connection Termination Point attribute.

–The IP Interface IMO will point to the Ethernet Interface IMO with the Containing Termination Point attribute.

•State. For example:

An active PPP connection running on top of ATM VC will be represented by two IMOs:

–Atm Vc IMO—Representing the ATM VC.

–Vc Based Encapsulation IMO—Representing the PPPoA encapsulation.

The Atm Vc IMO contains the Vc Based Encapsulation IMO. This containment relationship will be represented as follows:

–The Atm Vc IMO will point to the IP Vc Based Encapsulation IMO with the Contained Connection Termination Point attribute.

–The Vc Based Encapsulation IMO will point to the Atm Vc IMO with the Containing Termination Point attribute.

Note The relationship between Termination Points may be restricted to specific Termination Point types, based on how the technology is implemented. For example, a physical layer IMO may not contain an IP interface IMO, which represents the network layer interface.

Forwarding Components

Forwarding Components represent components that perform some kind of forwarding process between the Termination Points. Among other things, Forwarding Components are used to represent routing, bridging and switching components in the NE.

Each Forwarding Component has a logical association with the Termination Points for which it does the forwarding. This relationship is expressed by the logical associations attribute of the Forwarding Component IMO. An example of such a relationship would be the logical association between an IVcSwitchingEntity IMO representing the ATM/FR switching fabric and the IAtm/IFrameRelay IMOs representing the relevant ATM/FR ports.

Note The support level of each network technology can be varied. The support level is reflected in its related IMOs with their attributes, network topology, faults and alarms correlation, as described in each of this Guide's technology chapters and in the Common Components chapter.

The Polling Interval (PI) of the relationship between the versions' Termination Points, as well as between them and the various Forwarding Components, are of a more complex nature than can be uniformly expressed, hence they are marked as Not Applicable (N/A) in their corresponding columns. This includes the Containing Termination Points, Contained Connection Termination Points, and Logical Sons attributes of an IMO.

Conventions Used in this Guide

This document uses the following conventions:

Table 1-2 Document Conventions

Convention
Description

Italic text

Indicates references to enumeration values

Blue text

Indicates references to defined objects/tables


Note Each object that the interface uses in the IMO is written in parenthesis.

Scheme Values

The Scheme column of each IMO table can have the following values:

•IP Core

•Product

•Any

•N/A—This is not a value that is populated by polling the device, but rather as part of the creation of the model object.

Polling Interval Values

The Polling Interval column of each IMO table can have the following values:

•Status

•Configuration

•System

•Topology Layer 1 (Topology L1)

•Topology Layer 2 (Topology L2)

•N/A—Not every property has a polling interval. Some properties are created from the results of multiple queries, and therefore there is no specific polling for them.

For more information about polling intervals, see the Cisco Active Network Abstraction 3.6.5 Administrator User Guide.