commands for cisco_devices
TRANSCRIPT
Cisco Devices
The Command-Line InterfaceShortcuts for Entering Commands
Using the [tab] Key to Complete Commands
Using the Question Mark for Help
enable Command
exit Command
disable Command
logout Command
Setup Mode
Keyboard Help
show Commands
Configuring a Router
Configuring a Single Cisco RouterRouter Modes
Entering Global Configuration Mode
Configuring a Router Name
Configuring Passwords
Password Encryption
Configuring a Serial Interface
Configuring a Fast Ethernet Interface
Creating a Message-of-the-Day Banner
Creating a Login Banner
Setting the Clock Time Zone
Assigning a Local Host Name to an IP Address
The no ip domain-lookup Command
The logging synchronous Command
The exec-timeout Command
Saving Configurations
Erasing Configurations
show Commands
EXEC Commands in Configuration Mode: The do Command
Configuration Example: Basic Router Configuration
Boston Router
Routing
Static RoutingConfiguring a Static Route on a Router
Static Routes and Administrative Distance (Optional)
Router(config)#ip route 172.16.20.0 255.255.255.0 172.16.10.2 permanentRouter(config)#ip route 172.16.20.0 255.255.255.0 172.16.10.2 200
Configuring a Default Route on a Router
Verifying Static Routes
Router#show ip route
Configuration Example: Static Routes
Boston Router
Buffalo Router
Bangor Router
RIPThe ip classless Command
RIP Routing: Mandatory Commands
RIP Routing: Optional Commands
Troubleshooting RIP Issues
Configuration Example: RIPv2 Routing
Cancun Router
Acapulco Router
Mazatlan Router
EIGRPConfiguring Enhanced Interior Gateway Routing Protocol (EIGRP)
EIGRP Auto-Summarization
Load Balancing: variance
Bandwidth Use
Authentication
Verifying EIGRP
Troubleshooting EIGRP
Configuration Example: EIGRP
Austin Router
Houston Router
Single Area OSPFConfiguring OSPF: Mandatory Commands
Using Wildcard Masks with OSPF Areas
Configuring OSPF: Optional Commands
Loopback Interfaces
Router ID
DR/BDR Elections
Modifying Cost Metrics
Authentication: Simple
Authentication: Using MD5 Encryption
Timers
Propagating a Default Route
Verifying OSPF Configuration
Troubleshooting OSPF
Configuration Example: Single Area OSPF
Austin Router
Houston Router
Galveston Router
Switching
Configuring a SwitchHelp Commands
Command Modes
Verifying Commands
Resetting Switch Configuration
Setting Host Names
Setting Passwords
Setting IP Addresses and Default Gateways
Setting Interface Descriptions
Setting Duplex Operation
Setting Operation Speed
Managing the MAC Address Table
Configuring Static MAC Addresses
Switch Port Security
Verifying Switch Port Security
Sticky MAC Addresses
Configuration Example
VLANsCreating Static VLANs
Using VLAN Configuration Mode
Using VLAN Database Mode
Assigning Ports to VLANs
Using the range Command
Verifying VLAN Information
Saving VLAN Configurations
Erasing VLAN Configurations
Configuration Example: VLANs
VLAN Trunking Protocol and Inter-VLAN RoutingDynamic Trunking Protocol (DTP)
Setting the Encapsulation Type
VLAN Trunking Protocol (VTP)
Using VLAN Database Mode
Verifying VTP
Inter-VLAN Communication Using an External Router:
Router-on-a-Stick
Inter-VLAN Communication Tips
Router(config)#interface fastethernet 0/0Router(config-if)#encapsulation dot1q 1 nativeRouter(config-if)#ip address 192.168.1.1 255.255.255.0Router(config-if)#interface fastethernet 0/0.10Router(config-subif)#encapsulation dot1q 10Router(config-subif)#ip address 192.168.10.1 255.255.255.0
Configuration Example: Inter-VLAN Communication
ISP Router
CORP Router
L2Switch1 (Catalyst 2960)
STP and EtherChannelSpanning Tree Protocol
Enabling Spanning Tree Protocol
Configuring the Root Switch
Configuring a Secondary Root Switch
Configuring Port Priority
Configuring the Path Cost
Configuring the Switch Priority of a VLAN
Configuring STP Timers
Verifying STP
Optional STP Configurations
PortFast
BPDU Guard
Changing the Spanning-Tree Mode
Different types of spanning tree can be configured on a Cisco switch. The options varyaccording to the platform:• Per-VLAN Spanning Tree (PVST)—There is one instance of spanning tree for eachVLAN. This is a Cisco proprietary protocol.• Per-VLAN Spanning Tree Plus (PVST+)—Also Cisco proprietary. Has addedextensions to the PVST protocol.• Rapid PVST+—This mode is the same as PVST+ except that it uses a rapidconvergence based on the 802.1w standard.• Multiple Spanning Tree Protocol (MSTP)—IEEE 802.1s. Extends the 802.1wRapid Spanning Tree (RST) algorithm to multiple spanning trees. Multiple VLANscan map to a single instance of RST. You cannot run MSTP and PVST at the sametime.
Extended System ID
Enabling Rapid Spanning Tree
Troubleshooting Spanning Tree
Configuration Example: STP
Core Switch (2960)
Distribution 1 Switch (2960)
Distribution 2 Switch (2960)
EtherChannel
EtherChannel provides fault-tolerant, high-speed links between switches, routers, andservers. An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet linksbundled into a single logical link. If a link within an EtherChannel fails, traffic previouslycarried over that failed link changes to the remaining links within the EtherChannel.
Interface Modes in EtherChannel
Guidelines for Configuring EtherChannel
Configuring Layer 2 EtherChannel
Verifying EtherChannel
Configuration Example: EtherChannel
Core (2960)
ALSwitch1 (2960)
ALSwitch2 (2960)
Extending the LAN
Implementing a Wireless LAN