Troubleshooting IP Addressing Determining IP Address Problems
◦ Passive interface
Routing Basics
the IP Routing Process
lesson 6 routing configurations EIGRP and OSPF
EIGRP Features and Operation
Protocol Dependant Modules
Neighbor Discovery
Reliable Transport Protocol (RTP)
Diffusing Update Algorithm (DUAL)
Using EIGRP to support Large Networks
Multiple Autonomous Systems
VLSM Support and Summarization
Route Discovery and Maintenance
Configuring EIGRP Configuring Discontiguous Networks
Verifying EIGRP
Open Shortest Past First (OSPF) Basics OSPF Terminology
Configuring OSPF Areas
Verifying OSPF Configuration
The show ip ospf Command
The show ip ospf database Command
The show ip ospf interface Command
The show ip ospf neighbor Command
The show ip protocols Command
OSPF and Loopback Interfaces Configuring Loopback Interfaces
Verifying Loopbacks and RIDs
Troubleshoot OSPF
Configuring EIGRP and OSPF Summary Routes
Configuring IP Routing
Static Routing
Default Routing
Dynamic Routing
Routing Protocol Basics
Administrative Distances
Routing Protocols
Distance Vector Routing Protocols RIP
IGRP
Link State and Hybrid Routing Protocols OSPF
EIGRP
Routing Loops
Maximum Hop Count
Split Horizon
Route Poisoning
Holddown Timers
Routing Information Protocol (RIP)
RIP Timers
RIP Version 2 (RIPv2)
Configuring RIP Routing
Verifying the RIP Routing Tables
Holding Down RIP Propagations
IGRP Timers
Configuring IGRP Routing
Verifying the IGRP Routing Tables
Troubleshooting IGRP
Using Both RIP and IGRP
Verifying your Configurations
The show protocols Command
The show ip protocols Command
the debug ip rip Command
The debug ip igrp Command
Interior Gateway Routing Protocol (IGRP)
Main Topic 4
Troubleshooting
• Identify and correct common network problems
• Utilize netflow data
• Troubleshoot and Resolve Spanning Tree operation issues
◦ root switch
◦ priority
◦ mode is correct
◦ port states
• Troubleshoot and Resolve routing issues
◦ routing is enabled
◦ routing table is correct
◦ correct path selection
• Troubleshoot and Resolve OSPF problems
◦ neighbor adjancies
◦ Hello and Dead timers
◦ OSPF area
Administrative Distance of 110
Uses Areas Area 0 is the backbone
Configuration
Router(config)#router ospf 1 1 is the process ID
Router(config-router)#router-id 192.168.1.1 Sets the Router ID
Router(config-router)#network 1.1.1.1 0.0.0.0 area 0 Places host 1.1.1.1 into the OSPF process
Router(config-router)#network 192.168.1.0 0.0.0.255 area 0 Places network 192.168.1.0 into the OSPF process
Network is a wildcard entry
Show Commands
Router#show ip ospf database
Router#show ip ospf neighbor
RIP
Administrative Distance of 120
Configuration
Router(config)#router rip
Router(config-router)#version 2
Router(config-router)#no auto-summary
Router(config-router)#network 2.2.2.2
Router(config-router)#network 192.168.1.0
Show commands Router#show ip rip database
EIGRP
Administrative Distance of 90
Configuration
Router(config)#router eigrp 1 1 is the Autonomous System ID
Router(config-router)#network 1.1.1.1 0.0.0.0 Places host 1.1.1.1 into EIGRP
Router(config-router)#network 192.168.1.0 0.0.0.255 Places network 192.168.1.0 into EIGRP
Network is a wildcard entry
Show commands
Router#show ip eigrp neighbors
Router#show ip eigrp topology
◦ Interface MTU
◦ Network types
◦ Neighbor states
◦ OSPF topology database
• Troubleshoot and Resolve EIGRP problems
◦ neighbor adjancies
◦ AS number
◦ Load balancing
◦ Split horizon
• Troubleshoot and Resolve interVLAN routing problems
◦ Connectivity
◦ Encapsulation
◦ Subnet
◦ Native VLAN
◦ Port mode trunk status
• Troubleshoot and Resolve WAN implementation issues
◦ Serial interfaces
◦ PPP
◦ Frame relay
• Monitor NetFlow statistics
• Troubleshoot etherchannel problems
wan lesson 5
WAN Technologies
• Identify different WAN Technologies
◦ Metro Ethernet
◦ VSAT
◦ Cellular 3G / 4G
◦ MPLS
◦ T1 / E1
◦ ISDN
◦ DSL
◦ Frame relay
◦ Cable
◦ VPN
• Configure and verify a basic WAN serial connection
• Configure and verify a PPP connection between Cisco routers
• Configure and verify Frame Relay on Cisco routers
• Implement and troubleshoot PPPoE
wan topics
s
Introduction to Wide Area Networks
Defining WAN Terms
WAN Connection Types
WAN Support
Cabling the Wide Area Network
Serial Transmission
Data Termination Equipment
Data Communication Equipment
Fixed and Modular Interfaces
High-Level Data-Link Control (HDLC) Protocol
Point to Point Protocol
LCP Configuration
PPP Session Establishment
PPP Authentication Methods
Configuring PPP on Cisco Routers
Configuring PPP Authentication
Verifying PPP Encapsulation
Frame Relay Introduction to Frame Relay Technology
Frame Relay Implementation and Monitoring
Integrated Services Digital Network
ISDN Connections
ISDN Components
Basic Rate Interface
Primary Rate Interface
ISDN with Cisco Routers
Dial on Demand Routing
Configuring DDR
Optional Commands
DDR with Access Lists
Verifying the ISDN Operation
vlans 7
Broadcast Control
Security
Flexibility and Scalability
VLAN Memberships Static VLANs
Dynamic VLANs
Identifying VLANs
Frame Tagging
VLAN Identification Methods
Inter-Switch Link (ISL) Protocol
VLAN Trunking Protocol (VTP) VTP Modes of Operation
VTP Pruning
Routing between VLANs
Configuring VLANs
Assigning Switch Ports to VLANs
Configuring Trunk Ports
Configuring Inter-VLAN Routing
Troubleshooting VTP Configuring VTP
switching layer 8
Before Layer 2 Switching
Switching Services
Limitations of Layer 2 Switching
Bridging vs. LAN Switching
Three Switch Functions at Layer 2
Spanning Tree Protocol (STP) Spanning Tree Terms
Spanning Tree Operation
LAN Switch Types
Cut-Through
Fragment Free
Store and Forward
Managing a Cisco Internetwork 10 The Internal Components of a Cisco Router
The Router Boot Sequence
Managing Configuration Registers
Understanding the Configuration Register Bits
Checking the Current Configuration Register Value
Changing the Configuration Register
Recovering Passwords
Backing Up and Restoring the Cisco IOS
Verifying Flash Memory
Backing Up the Cisco IOS
Restoring or Upgrading the Cisco Router IOS
Backing Up and Restoring the Router Configuration
Backing Up the Router Configuration
Restoring the Router Configuration
Erasing the Configuration
Using Cisco Discovery Protocol (CDP)
Getting CDP Timers and Holdtime Information
Gathering Neighbour Information
Gathering Interface Traffic Information
Gathering Port and Interface Information
Using Telnet
Telnetting into Multiple Devices
Checking Telnet connections
Checking Telnet Users
Closing Telnet Sessions
Resolving Hostnames Building a Host Table
Using DNS to resolve names
Checking Network Connectivity Using Ping
Using Traceroute 9
Managing a Cisco Internetwork 10
Introduction to Access Lists
Wildcard Masking Standard Access Lists
Controlling VTY Access
Extended Access Lists
Named Access Lists
Monitoring Access Lists
router on a stick Where a single interface routes between
di!erent networks
Configures a Fast Ethernet port on a
router as a trunk Can use ISL or 802.1q
Have to create sub interfaces and tag these with the correct VLAN
Configuration
First select fa0/1 Router(config)#interface fa0/1
No L3 info is needed Router(config-if)#no ip-address
Ensure the interface is up Router(config-if)#no shutdown
Router(config-if)#interface fa0/1.1
Configure the sub interface
It is good practice to match the sub
interface number with the VLAN number Not essential
Router(config-subif)#ip address 10.0.0.1 255.255.255.0 Configure L3 on the interface
This will become the gateway for the VLAN
Router(config-subif)#encapsulation dot1q 1 native
As this is a trunk, the encapsulation must be set You can use dot1q or ISL
This is where the VLAN is mapped
It is a good idea to identify the native VLAN In this case it is VLAN 1
Router(config-subif)#exit
Configure the sub interface for VLAN 2 Router(config-if)#interface fa0/1.2
Configure L3 on the interface Router(config-subif)#ip address 10.1.0.1 255.255.255.0
Sets dot1q encapsulation for VLAN 2 Router(config-subif)#encapsulation dot1q 2
Static Routing 13
Administrative Distance of 1
Apart from a static route to a
connected interface - AD of 0
Router(config)ip route 1.1.1.0 255.255.255.0 2.2.2.2 To get to 1.1.10/24 go via 2.2.2.2