Software Version November
 Copyright 2006 Cisco Systems, Inc. All rights reserved
 Iii
N T E N T S
 Enabling Port Fast
 Showing Circuits
 Ospf Overview
 Vii
 Viii
Configuring the Address Resolution Protocol
 Enabling CDP
 OL-8241-02
 Interface Trunking Between VLANs
 Xii
 Field Description for the show bridge port-fast Command
 Field Descriptions for the show arp management-port Command
 Preface
 Audience
How to Use This Guide
This guide is organized as follows
Xvi
 Xvii
Related Documentation
 Xviii
 Xix
 TACACS+
Symbols and Conventions
 Cisco.com
Obtaining Documentation
Xxi
 Product Documentation DVD Ordering Documentation
Documentation Feedback
Xxii
 Cisco Product Security Overview
Reporting Security Problems in Cisco Products
Xxiii
 Obtaining Technical Assistance
Product Alerts and Field Notices
Xxiv
 Xxv
Cisco Technical Support & Documentation Website
 Definitions of Service Request Severity
Submitting a Service Request
Xxvi
 Xxvii
Obtaining Additional Publications and Information
 Xxviii
 Interface and Circuit Overview
Configuring Interfaces and Circuits
 OL-8241-02
 CSS Interfaces and Circuits
 Log in to the CSS Enter configuration mode by typing config
Interface and Circuit Configuration Quick Start
Config# interface e1
Config# interface 2/1
 Optional Display the circuit configuration
Optional Display the interface configuration
Config# circuit VLAN1
Config# circuit VLAN3
 Configuring Interfaces
 Config-if2/1#description Connects to server17
Configuring an Interface
Config-if2/1#show running-config interface 2/1
Entering a Description for the Interface
 To remove an interface description, enter
Configuring Interface Duplex and Speed
 Configuring Interfaces and Circuits
 Config-if1/1#phy auto-negotiate disable
Setting Interface Maximum Idle Time
 Bridging an Interface to a Vlan
 Specifying Vlan Trunking for an Interface
 To remove the default Vlan selection, enter
Selecting a Default Vlan in a Trunk
 Configuring Interfaces and Circuits
 Configuring Spanning-Tree Bridge Port Priority
Configuring Spanning-Tree Bridge Pathcost
To restore the default path cost, enter
To restore the default port priority of 128, enter
 Configuring Spanning-Tree Bridge State
Configuring Port Fast on an Interface
To disable the bridge state, enter
Config-ife7#bridge state enable
 Config-if2/1#bridge port-fast disable
Config-if2/1#bridge port-fast enable
Config# bridge bpdu-guard enabled
Enabling Port Fast
 Showing Port Fast Information
Config# bridge bpdu-guard disabled
 Showing Bridge Configurations
Showing Interface Configurations
 Bridge interface virtual LAN number
Vlan
 Field Description
 Showing Interface Information
Showing Trunking Configurations
Port CSS port
Vlan on the port
 Config# show phy 2/1
6describes the fields in the show interface command output
Showing Interface Duplex and Speed
 Showing Interface Statistics
7describes the fields in the show phy command output
 Interface address at the protocol layer immediately
8describes the fields in the show mibii command output
That do not have such an address for example, a serial line
This object contains an octet string of zero length
 # clear statistics
 Number of frames received on the interface that are an
Showing Ethernet Interface Errors
Integral number of octets in length but do not pass
Frame check sequence FCS check
 Field Description
 Shutting Down All Interfaces
Shutting Down an Interface
 Restarting All Interfaces
Restarting an Interface
To shut down all interfaces, enter
To restart all interfaces, enter
 Entering Circuit Configuration Mode
Configuring Circuits
Configuring a Circuit IP Interface
Config# circuit VLAN7
 Configuring a Circuit-IP Broadcast Address
Configuring a Circuit IP Address
 Configuring Circuit-IP Unreachables
Configuring Circuit-IP Redirects
 Enabling and Disabling a Circuit IP
To disable router discovery, enter
100
Preference
 Configuring Router-Discovery Limited-Broadcast
Configuring the Router-Discovery Lifetime
To revert to the default of 224.0.0.1, enter
 Configuring the Router-Discovery Min-Advertisement-Interval
Configuring the Router-Discovery Max-Advertisement-Interval
Max-advertisement-interval
Min-advertisement-interval
 Showing Circuits
10describes the fields in the show circuits command output
To list an individual circuit, enter
 Showing IP Interfaces
Indicates whether RIP is Enabled or Disabled
# show ip interfaces
 Enabling RIP on an IP Interface
Configuring RIP for an IP Interface
To stop running the RIP on the interface, enter
 Configuring a RIP Receive Version
Configuring a RIP Default Route
Configuring RIP Send Version
 Showing RIP Configurations for IP Addresses
Configuring RIP Packet Logging
 # show rip globals
12describes the fields in the show rip command output
 # show rip statistics
 Configuring the Switched Port Analyzer Feature
 Example of Span Connectivity
 Configuring Span on a CSS
 Config# setspan srcport 3/3 destport 3/12 copyBoth
Verifying the Span Configuration on a CSS
Config# no setspan srcport 3/3 destport 3/12
 Field Description
 Configuring Spanning-Tree Bridging for the CSS
 Config# bridge forward-time
Config# bridge aging-time
Config# bridge hello-time
CSS Spanning-Tree Bridging Quick Start
 To restore the default aging time of 300, enter
Configuring Spanning-Tree Bridge Aging-Time
Set the bridge spanning-tree maximum age, in seconds
Recommended Display bridge forwarding information
 Configuring Spanning-Tree Bridge Max-Age
Configuring Spanning-Tree Bridge Hello-Time
To restore the default delay time of 4, enter
To restore the default hello time interval of 1, enter
 To restore the default maximum age of 6, enter
Configuring Spanning-Tree Bridge Priority
Disabling Bridge Spanning-Tree
To set the bridge maximum age to 21, enter
 To disable spanning-tree bridging, enter
Showing Bridge Configurations
To reenable spanning-tree bridging, enter
Config# bridge spanning-tree disable
 Field Description
 OL-8241-02
 Configuring Open Shortest Path First
 Ospf Routing Hierarchy Link-State Databases
Ospf Overview
 Boundry Router2
Ospf Routing Hierarchy
 Areas
Autonomous System
Backbone Area
 Stub Area
Area Border Routers
Autonomous System Boundary Routers
 Link-State Databases
 Global Ospf Configuration Quick Start
CSS Ospf Configuration Quick Start
 Enable Ospf on the CSS
 Access global configuration mode. Enter
Ospf IP Interface Configuration Quick Start
# config
Config# circuit VLAN6
 Configure the IP interface as an Ospf interface. Enter
 # show ospf global
Verifying Your Configuration
# show ospf redistribute
# show ospf advertise
 Configuring the Ospf Router ID
Configuring Ospf on the CSS
To delete the router ID on the CSS, disable Ospf and enter
Config# ospf router-id
 To disable OSPF, enter
Configuring an Area
Enabling Ospf
 Configuring Summarized Routes at an ABR
Configuring Equal-Cost Routes
Removing an Area
 To remove the CSS as an AS boundary router, enter
To remove the range, enter
 Advertising a Route as an Ospf ASE Route
 VIP is
 Config# ospf advertise 192.168.44.0
 Are preceded by an exclamation point
Config# no ospf advertise
 Config# ospf default
Advertising a Default ASE Route
 Config# no ospf default
Config# ospf default metric 10 type1
Config# ospf redistribute firewall
Advertising Other Routes Through Ospf
 Config# ospf redistribute rip metric 3 type1
Configuring Ospf on a CSS IP Interface
Config# no ospf redistribute rip
To stop advertising the RIP routes via OSPF, enter
 Configure this circuit as an Ospf circuit. Enter
Configuring the CSS IP Interface as an Ospf Interface
 To reset the interface to the default backbone area, enter
Configuring the Interface Attributes
To disable Ospf on the interface, enter
Assigning an Ospf Area to the Interface
 Setting the Dead Router Interval
Setting the Cost
 Setting the Password
Setting the Hello Packet Interval
To remove the Ospf password from the interface, enter
 Setting the Priority of the CSS
Setting the Poll Interval
 Setting the Transit-Link Delay
Setting the Retransmission Interval
 Showing Ospf Information
3describes the fields in the show ospf areas command output
Showing Ospf Area Information
To show information about Ospf areas, enter
 To show Ospf global statistics, enter
Showing Global Statistics
 To show Ospf interfaces, enter
Showing IP Interface Information
 Field
 Field Description
 Showing Link-State Databases
 To show the entire database, enter
6describes the fields in the show ospf lsdb command output
# show ospf lsdb
 Field Description
 7describes the fields in the show ospf ase command output
Showing the Configured Advertised ASE Routes
To show the configuration of ASE routes into OSPF, enter
Showing ASE Entries
 # show ospf advertise 192.168.11.1/24
 Firewall Field Description
Showing the Redistribution Policy
 To show the summary-route configuration information, enter
Showing Summary Route Configuration Information
Showing Ospf Neighbors
To show the Ospf neighbors, enter
 Field Description
 OL-8241-02
 Ospf Configuration in a Startup-Configuration File
 OL-8241-02
 Protocol
Configuring the Address Resolution
 Set the time, in seconds, to wait for an ARP resolution
ARP Configuration Quick Start
Define a static ARP mapping
 Config# no arp
Configuring ARP
 To reset the default behavior, enter
Configuring ARP Timeout
Config# arp mac-down-immediate
Config# no arp mac-down-immediate
 To restore the default wait time of 5 seconds, enter
Configuring ARP Wait
Updating ARP Parameters
Clearing ARP Parameters
 # clear arp cache
Showing ARP Information
 # show arp summary
2describes the fields in the show arp command output
 # show arp config
4describes the fields in the show arp config command output
# show arp file
# show arp management-port
 Field Descriptions for the show arp management-port Command
 OL-8241-02
 Configuring Routing Information Protocol
 Configure the CSS to advertise a route through RIP
RIP Configuration Quick Start
Config# rip advertise 192.168.1.0/24
Config# rip redistribute static
 Configuring RIP Redistribute
Configuring RIP Advertise
Config# no rip advertise 192.168.1.0/24
 Config# no rip equal-cost
Configuring Equal-Cost RIP Routes
 Showing RIP Configurations
 3describes the fields in the show rip globals command output
 Field Descriptions for the show rip statistics Command
 OL-8241-02
 Configuring the Internet Protocol
 IP Configuration Quick Start
 Configuring an IP Route
 Configuring the Internet Protocol Configuring an IP Route
 To remove a static route, enter
For example, to configure a blackhole route, enter
To remove a firewall route, enter
 Disabling an Implicit Service for the Static Route Next Hop
 To reset the default setting, enter
Configuring an IP Source Route
Config# no ip no-implicit-service
Config# ip source-route
 Configuring Box-to-Box Redundancy
Configuring the IP Record Route
To disable box-to-box redundancy, enter
 Config# ip ecmp no-prefer-ingress
Configuring IP Equal-Cost Multipath
Config# no ip ecmp no-prefer-ingress
Config# ip ecmp roundrobin
 Config# no ip subnet-broadcast
Configuring IP Unconditional Bridging
Config# ip uncond-bridging
 Config# no ip uncond-bridging
To restore the default behavior of the CSS, enter
 Config# no ip opportunistic
Config# ip opportunistic all
Config# ip route 0.0.0.0 /0 192.168.1.7 originated-packets
 Showing IP Configuration Information
Configuring Advanced Route Remapping
Config# ip advanced-route-remap
Config# no ip advanced-route-remap
 Showing IP Global Configuration Parameters
 Whether RIP is enabled or disabled
 Showing IP Routing Information
4describes the fields in the show ip routes command output
 Index value that identifies the local interface through
Showing IP Statistics
Which the next hop of this route should be reached
 TCP Statistics
 Icmp Statistics
 ARP Statistics
 Showing a Summary of IP Global Statistics
Resetting IP Statistics
 Field Descriptions for the show ip summary Command
 Configuring the Cisco Discovery Protocol
 Config# cdp holdTime
CDP Configuration Quick Start
Config# cdp timer
Recommended Display and verify CDP information for the CSS
 To disable CDP transmissions on the CSS, enter
Setting the CDP Hold Time
Config# no cdp holdTime
Enabling CDP
 Config# no cdp timer
Setting the CDP Transmission Rate
Showing CDP Information
24-8540-1show cdp neighbors
 Configuring the Dhcp Relay Agent
 Enable the Dhcp relay agent on the CSS circuit
Dhcp Relay Agent Configuration Quick Start
Optional Verify the Dhcp configuration
 Config-circuitVLAN2#no dhcp relay-to
To disable the Dhcp relay agent on the circuit, enter
Adding a Dhcp Destination on a Circuit
Enabling and Disabling Dhcp on the Circuit
 Config# no dhcp-agent max-hops
Displaying the Dhcp Relay Configuration
Defining the Hops Field Value for Forwarding Dhcp Messages
# show dhcp-relay-agent global
 Field Description
 OL-8241-02
 Bpdu guard Displaying information Enabling
Aging time, configuring for bridging
IN-1
 IN-2
CLI
 IN-3
DNS
 IN-4
IP Ecmp
 IN-5
 IN-6
 IN-7
 IN-8
MIB-II interface Ospf global