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FNCNP Exam Preparation

FNCNP Test Objectives

802.1D Spanning Tree Protocol
The Purpose of 802.1 D Spanning Tree Protocol (STP)
STP Device Titles and roles
The Device Title Election Process
Bridge Protocol Data Units
STP port states
STP recovery
Determining Spanning Tree convergence
Root Bridge Election & Path Cost
Foundry Networks Hardware Defaults
Spanning Tree Bridge and Port Parameters
Designs that determine the Root Bridge
Timers
Spanning Tree Applications
Design Model for Enterprise Switching
Foundry Networks Spanning Tree Features and where they are applicable
Rapid Spanning Tree 802.1W
Applying Rapid Spanning Tree
Verify that the convergence (failover)
Describe why failover and failback times are different
Adjust the Forward-Delay
Determine which ports can benefit from 802.1 W
Single Instance Spanning Tree
Reducing the topology to one STP instance
Describe how CPU resources are conserved with one STP instance compared to many STP instances
Convert to Single Instance Spanning Tree and back to Per VLAN without network disruption
Per VLAN Spanning Tree
Load-balance VLAN traffic
Implement Rapid Spanning Tree in the PerVLAN application
Determine which switches will provide 802.1w failover when the VLAN uplink being broken
Per VLAN Group Spanning Tree
Topology Groups
Reduce CPU usage and maintain uplink load balancing
Implement Rapid Spanning Tree in a Per VLAN Group STP application
VRRPe in a Spanning Tree Environment
Implement two different layer 2 designs of VRRPe in a network core
Describe how a Backup Router becomes Master through non-reception of Hello packets
VRIDs and L2 and L3 failover between them
The effect of VRRPe hello packet interruption and delay
Locate STP parameters, commands, and operations guidelines in the Foundry Networks Enterprise Configuration and Maintenance guide

OSPF

OSPF Adjacency
OSPF Packet Types
OSPF Neighbor Adjacency and States
Use the OSPF debug commands to troubleshoot adjacency
Link State costs and effect on the route table
MD5 Authentication
OSPF Database
Link State Advertisements LSA's and their uses
Internal and external LSA's
Describe the effect that Normal OSPF area boundaries have on LSA migration
OSPF Route Summarization
Redistribution to allow Multiple Interior routing protocols to coexist in the same network
Route summarization
Design and configure Intra-Area and Inter-Area Summarization
Configure, monitor and troubleshoot redistribution problems
Administrative Distances
Administrative Distance
Administrative Distance vs. Metric
Default Administrative Distances
Modify an Administrative Distance
Blocking External LSA's
List the LSA's types that flood into Normal areas
List the LSA's types that flood into Stub areas
List the LSA's types that flood into Totally Stubby areas
List the LSA's types that flood into Not So Stubby areas (NSSA)
Show ip ospf
Make area type changes and verify reduction of external LSA's in OSPF databases
OSPF Filters
List the filter types and describe their behavior
Design and deploy filters to block route updates and traffic
Locate OSPF parameters, commands, and operations guidelines in the Foundry Networks Enterprise Configuration and Maintenance guide

BGP

BGP Fundamentals
BGP message types
BGP session states
BGP operation
BGP attributes are used as basic routing policy tools
Configure and troubleshoot BGP session startup
Route Filtering and Selection
Describe the Route Exchange and Filtering processes including; IP tables, BGP tables, input and output policies
BGP filtering mechanisms
Implementing BGP Policy Changes
Explain the three ways to implement BGP configuration changes
Soft-reconfiguration and hard clear
Memory considerations when using soft-reconfiguration
Route Refresh (RFC 2918)
Manipulating Attributes using Route Maps
Explain how each attribute is used to influence route selection or traffic flow
MEDs three ways to introduce inbound traffic
Implement inbound and outbound traffic flow designs using BGP attributes
Design BGP policies based on the knowledge gained configuring attributes
Filtering Prefixes
Access List to filter prefixes one by one
AS-Path access-list are used in a BGP network
AS-Path regular expressions and describe what route update they will filter
Implement a security design with AS Path access-list
Configure prefix-list to prevent customers from advertising routes with a mask greater than 26 bits
Transit Autonomous Systems
Communities
Explain the RFC-1997 AS:NN community names
Design community based policies to control propagation of the route updates
Transit policy design to control route updates to both customers and other
ISPs
Route-maps, neighbor statements, set and match command to implement communities
Redundancy
Explain who controls Inbound and Outbound traffic
Describe how BGP is not needed to implement multiple links to one or more Service Providers
Multiple links to one ISP
Configure BGP routing for customers with multiple links to one or more Service Providers
MulitHomed to ISPs
Explain why and when BGP should be used
Design and configure load sharing for customer's (outbound) traffic and return (inbound) traffic
Describe the load sharing requirements of both a typical internet customer and typical ISP
Configure 3 types of multihome designs
Design and deploy BGP communities for consistent return path selection
BGP Convergence and Route flap Dampening
Explain why route flap dampening is used
Describe what happens when a route flaps
List the operational steps of route flap dampening
Configure route flap dampening
Scaling IBGP
IBGP full mesh limitations
IBGP design guidelines
Explain the operation of BGP route reflectors
BGP confederations
Route reflector design
Configure peer groups
Locate BGP parameters, commands, and operations guidelines in the Foundry Networks Enterprise Configuration and Maintenance guide

Troubleshooting

Apply Ironware OS command set (CLI) to diagnose and troubleshoot a switch network problem.

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