Software Version January
 Copyright 2004, Cisco Systems, Inc. All rights reserved
 N T E N T S
Iii
 Configuring Circuits
 Showing Circuits
 Ospf Overview
 Setting the Retransmission Interval
Vii
 Configuring the Internet Protocol
Viii
 Enabling CDP
 OL-4580-01
 Interface Trunking Between VLANs
 Xii
 Field Description for the show bridge port-fast Command
 Field Descriptions for the show ospf redistribute Command
Xiv
 Preface
 This guide is organized as follows
How to Use This Guide
Audience
Xvi
 Related Documentation
Xvii
 Rmon
Xviii
 TACACS+
Xix
 Symbols and Conventions
 Ordering Documentation
Obtaining Documentation
Cisco.com
Xxi
 Cisco Technical Support Website
Documentation Feedback
Obtaining Technical Assistance
Xxii
 Opening a TAC Case
TAC Case Priority Definitions
Xxiii
 Obtaining Additional Publications and Information
Xxiv
 Xxv
 Xxvi
 Configuring Interfaces and Circuits
Interface and Circuit Overview
 OL-4580-01
 CSS Interfaces and Circuits
 # config
Interface and Circuit Configuration Quick Start
Log in to the CSS Enter configuration mode by typing config
Config# interface e1
 Config# circuit VLAN1
Optional Display the interface configuration
Optional Display the circuit configuration
Config# circuit VLAN3
 Configuring Interfaces
 Entering a Description for the Interface
Configuring an Interface
Command. For example
Text string from 1 to 255 characters including spaces
 Configuring Interface Duplex and Speed
To remove an interface description, enter
 Configuring Interfaces and Circuits
 Setting Interface Maximum Idle Time
Config-if1/1#phy auto-negotiate disable
 Bridging an Interface to a Vlan
Specifying Vlan Trunking for an Interface
 Config-trunkif2/3# no trunk
 Selecting a Default Vlan in a Trunk
To remove the default Vlan selection, enter
 Configuring Interfaces and Circuits
 To restore the default path cost, enter
Configuring Spanning-Tree Bridge Pathcost
Configuring Spanning-Tree Bridge Port Priority
To restore the default port priority of 128, enter
 To disable the bridge state, enter
Configuring Port Fast on an Interface
Configuring Spanning-Tree Bridge State
Config-ife7#bridge state enable
 Config# bridge bpdu-guard enabled
Config-if2/1#bridge port-fast enable
Config-if2/1#bridge port-fast disable
Enabling Port Fast
 Config# bridge bpdu-guard disabled
Showing Port Fast Information
 Showing Interface Configurations
Showing Bridge Configurations
 Vlan
Bridge interface virtual LAN number
 Field Description
 Port CSS port
Showing Trunking Configurations
Showing Interface Information
Vlan on the port
 6describes the fields in the show interface command output
Config# show phy 2/1
Showing Interface Duplex and Speed
 7describes the fields in the show phy command output
Showing Interface Statistics
 That do not have such an address for example, a serial line
8describes the fields in the show mibii command output
Interface address at the protocol layer immediately
This object contains an octet string of zero length
 # clear statistics
 Integral number of octets in length but do not pass
Showing Ethernet Interface Errors
Number of frames received on the interface that are an
Frame check sequence FCS check
 Field Description
 Shutting Down an Interface
Shutting Down All Interfaces
 To shut down all interfaces, enter
Restarting an Interface
Restarting All Interfaces
To restart all interfaces, enter
 Configuring a Circuit IP Interface
Configuring Circuits
Entering Circuit Configuration Mode
Config# circuit VLAN7
 Configuring a Circuit IP Address
Configuring a Circuit-IP Broadcast Address
 Configuring Circuit-IP Redirects
Configuring Circuit-IP Unreachables
 100
To disable router discovery, enter
Enabling and Disabling a Circuit IP
Preference
 Configuring the Router-Discovery Lifetime
Configuring Router-Discovery Limited-Broadcast
To revert to the default of 224.0.0.1, enter
 Max-advertisement-interval
Configuring the Router-Discovery Max-Advertisement-Interval
Configuring the Router-Discovery Min-Advertisement-Interval
Min-advertisement-interval
 10describes the fields in the show circuits command output
Showing Circuits
To list an individual circuit, enter
 Indicates whether RIP is Enabled or Disabled
Showing IP Interfaces
# show ip interfaces
 Configuring RIP for an IP Interface
Enabling RIP on an IP Interface
To stop running the RIP on the interface, enter
 Configuring a RIP Default Route
Configuring a RIP Receive Version
Configuring RIP Send Version
 Configuring RIP Packet Logging
Showing RIP Configurations for IP Addresses
 12describes the fields in the show rip command output
# show rip globals
 # show rip statistics
 Configuring the Switched Port Analyzer Feature
 Example of Span Connectivity
 Configuring Span on a CSS
 Verifying the Span Configuration on a CSS
Config# setspan srcport 3/3 destport 3/12 copyBoth
Config# no setspan srcport 3/3 destport 3/12
 Field Description
 Configuring Spanning-Tree Bridging for the CSS
 Config# bridge hello-time
Config# bridge aging-time
Config# bridge forward-time
CSS Spanning-Tree Bridging Quick Start
 Set the bridge spanning-tree maximum age, in seconds
Configuring Spanning-Tree Bridge Aging-Time
To restore the default aging time of 300, enter
Recommended Display bridge forwarding information
 To restore the default delay time of 4, enter
Configuring Spanning-Tree Bridge Hello-Time
Configuring Spanning-Tree Bridge Max-Age
To restore the default hello time interval of 1, enter
 Disabling Bridge Spanning-Tree
Configuring Spanning-Tree Bridge Priority
To restore the default maximum age of 6, enter
To set the bridge maximum age to 21, enter
 To reenable spanning-tree bridging, enter
Showing Bridge Configurations
To disable spanning-tree bridging, enter
Config# bridge spanning-tree disable
 Field Description
 OL-4580-01
 Configuring Open Shortest Path First Ospf
 Ospf Overview
Ospf Routing Hierarchy Link-State Databases
 Ospf Routing Hierarchy
Boundry Router2
 Autonomous System
Areas
Backbone Area
 Area Border Routers
Stub Area
Autonomous System Boundary Routers
 Link-State Databases
 CSS Ospf Configuration Quick Start
Global Ospf Configuration Quick Start
 Enable Ospf on the CSS
 Ospf IP Interface Configuration Quick Start
Access global configuration mode. Enter
Config# circuit VLAN6
 Configure the IP interface as an Ospf interface. Enter
 # show ospf redistribute
Verifying Your Configuration
# show ospf global
# show ospf advertise
 To delete the router ID on the CSS, disable Ospf and enter
Configuring Ospf on the CSS
Configuring the Ospf Router ID
Config# ospf router-id
 Configuring an Area
To disable OSPF, enter
Enabling Ospf
 Configuring Equal-Cost Routes
Configuring Summarized Routes at an ABR
Removing an Area
 To remove the range, enter
To remove the CSS as an AS boundary router, enter
 Advertising a Route as an Ospf ASE Route
 VIP is
 Config# ospf advertise 192.168.44.0
 Config# no ospf advertise
Preceded by an exclamation point
 Advertising a Default ASE Route
Config# ospf default
 Config# ospf redistribute firewall
Config# ospf default metric 10 type1
Config# no ospf default
Advertising Other Routes Through Ospf
 Config# no ospf redistribute rip
Configuring Ospf on a CSS IP Interface
Config# ospf redistribute rip metric 3 type1
To stop advertising the RIP routes via OSPF, enter
 Configuring the CSS IP Interface as an Ospf Interface
Configure this circuit as an Ospf circuit. Enter
 To disable Ospf on the interface, enter
Configuring the Interface Attributes
To reset the interface to the default backbone area, enter
Assigning an Ospf Area to the Interface
 Setting the Cost
Setting the Dead Router Interval
Setting the Hello Packet Interval
 Setting the Password
Setting the Poll Interval
To remove the Ospf password from the interface, enter
 Setting the Priority of the CSS
Setting the Retransmission Interval
For example, to set the poll interval to 200 seconds, enter
 Setting the Transit-Link Delay
Showing Ospf Information
To set the retransmission interval to 10 seconds, enter
 Showing Global Statistics
3describes the fields in the show ospf areas command output
Showing Ospf Area Information
To show information about Ospf areas, enter
 Showing IP Interface Information
To show Ospf interfaces, enter
 Field
 Field Description
 Showing Link-State Databases
 6describes the fields in the show ospf lsdb command output
To show the entire database, enter
# show ospf lsdb
 Field Description
 To show AS-external ASE entries in the LSDB, enter
7describes the fields in the show ospf ase command output
Showing ASE Entries
# show ospf ase
 Showing the Configured Advertised ASE Routes
To show the configuration of ASE routes into OSPF, enter
# show ospf advertise 192.168.11.1/24
 Showing the Redistribution Policy
Firewall Field Description
 Showing Ospf Neighbors
Showing Summary Route Configuration Information
To show the summary-route configuration information, enter
To show the Ospf neighbors, enter
 11 Field Descriptions for show ospf neighbors Command
 Field Description
 Field Description
 Ospf Configuration in a Startup-Configuration File
 OL-4580-01
 Configuring the Address Resolution
Protocol
 ARP Configuration Quick Start
Set the time, in seconds, to wait for an ARP resolution
Define a static ARP mapping
 Configuring ARP Mapping
Config# no arp
 To restore the default wait time of 5 seconds, enter
Configuring ARP Timeout
Configuring ARP Wait
Config# no arp timeout
 Updating ARP Parameters
Clearing ARP Parameters
# clear arp cache
 Show arp configfilemanagement-portsummaryiporhost
Showing ARP Information
 2describes the fields in the show arp command output
# show arp summary
 # show arp config
To display the global ARP configuration, enter
4describes the fields in the show arp config command output
# show arp file
 To display the resolution for a host IP address, enter
 OL-4580-01
 Configuring Routing Information Protocol
 Config# rip advertise 192.168.1.0/24
RIP Configuration Quick Start
Configure the CSS to advertise a route through RIP
Config# rip redistribute static
 Configuring RIP Advertise
Configuring RIP Redistribute
Config# no rip advertise 192.168.1.0/24
 Configuring Equal-Cost RIP Routes
Config# no rip equal-cost
 Showing RIP Configurations
 3describes the fields in the show rip globals command output
 Field Descriptions for the show rip statistics Command
 OL-4580-01
 Configuring the Internet Protocol
 IP Configuration Quick Start
 Configuring an IP Route
 Configuring the Internet Protocol Configuring an IP Route
 For example, to configure a blackhole route, enter
To remove a static route, enter
To remove a firewall route, enter
 Disabling an Implicit Service for the Static Route Next Hop
To reset the default setting, enter
Config# no ip no-implicit-service
 Config# ip source-route
Configuring an IP Source Route
Configuring the IP Record Route
Config# no ip source-route
 To disable box-to-box redundancy, enter
Configuring Box-to-Box Redundancy
Configuring IP Equal-Cost Multipath
Syntax for this global configuration command is
 Config# ip ecmp roundrobin
Config# ip ecmp no-prefer-ingress
Config# no ip ecmp no-prefer-ingress
Config# no ip subnet-broadcast
 Config# ip uncond-bridging
Configuring IP Unconditional Bridging
To restore the default behavior of the CSS, enter
Config# no ip uncond-bridging
 Example of Opportunistic Layer 3 Forwarding
 Config# no ip opportunistic
Showing IP Configuration Information
Config# ip opportunistic all
Config# ip route 0.0.0.0 /0 192.168.1.7 originated-packets
 Showing IP Global Configuration Parameters
 Whether RIP is enabled or disabled
 4describes the fields in the show ip routes command output
Showing IP Routing Information
 Showing IP Statistics
Index value that identifies the local interface through
Which the next hop of this route should be reached
 TCP Statistics
 Icmp Statistics
 ARP Statistics
 Resetting IP Statistics
Showing a Summary of IP Global Statistics
 Field Description
 OL-4580-01
 Configuring the Cisco Discovery Protocol
 Config# cdp timer
CDP Configuration Quick Start
Config# cdp holdTime
Recommended Display and verify CDP information for the CSS
 Config# no cdp holdTime
Setting the CDP Hold Time
To disable CDP transmissions on the CSS, enter
Enabling CDP
 Setting the CDP Transmission Rate
Config# no cdp timer
Showing CDP Information
 Configuring the Dhcp Relay Agent
 Dhcp Relay Agent Configuration Quick Start
Enable the Dhcp relay agent on the CSS circuit
Optional Verify the Dhcp configuration
 Adding a Dhcp Destination on a Circuit
To disable the Dhcp relay agent on the circuit, enter
Config-circuitVLAN2#no dhcp relay-to
Enabling and Disabling Dhcp on the Circuit
 Defining the Hops Field Value for Forwarding Dhcp Messages
Displaying the Dhcp Relay Configuration
Config# no dhcp-agent max-hops
# show dhcp-relay-agent global
 Field Description
 OL-4580-01
 Aging time, configuring for bridging
Bpdu guard Displaying information Enabling
IN-1
 CLI
IN-2
 DNS
IN-3
 IP Ecmp
IN-4
 IN-5
 IN-6
 IN-7
 Switched port analyzer. See also Span
MIB-II interface Ospf global
IN-8
 Symbol overview Zero, resetting Ethernet statistics to
IN-9
 IN-10