Example of Span Connectivity | Cisco Systems OL-4580-01 instruction

Chapter 1 Configuring Interfaces and Circuits

Configuring the Switched Port Analyzer Feature

Figure 1-3shows an example of SPAN connectivity with a protocol analyzer connected to port 2/13 on a CSS. In this example, the CSS copies all packets received or transmitted on Fast Ethernet (FE) port 2/4 (SSPAN port) to FE port 2/13 (DSPAN port). The analyzer connected to DSPAN port 2/13 receives all network traffic that the SSPAN port receives or transmits.

Figure 1-3 Example of SPAN Connectivity

SSPAN Rx

SSPAN port	DSPAN port	Normal egress port
From Client	Copy of	To Server
	SSPAN Rx
	frame

Identical packets

Protocol analyzer or RMON device

	SSPAN Tx
Normal egress port	SSPAN port	DSPAN port
			87482
	To Client	Copy of	From Server
		SSPAN Tx
		frame

Identical packets

Protocol analyzer or RMON device

Cisco Content Services Switch Routing and Bridging Configuration Guide

	OL-4580-01	1-45

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Cisco Systems OL-4580-01 manual Example of Span Connectivity

Contents

Software Version January Copyright 2004, Cisco Systems, Inc. All rights reserved Iii N T E N T S Configuring Circuits Showing Circuits Ospf Overview Vii Setting the Retransmission Interval Viii Configuring the Internet Protocol Enabling CDP OL-4580-01 Interface Trunking Between VLANs Xii Field Description for the show bridge port-fast Command Xiv Field Descriptions for the show ospf redistribute Command Preface Xvi How to Use This GuideAudience This guide is organized as follows Xvii Related Documentation Xviii Rmon Xix TACACS+ Symbols and Conventions Xxi Obtaining DocumentationCisco.com Ordering Documentation Xxii Documentation FeedbackObtaining Technical Assistance Cisco Technical Support Website Xxiii Opening a TAC CaseTAC Case Priority Definitions Xxiv Obtaining Additional Publications and Information Xxv Xxvi Interface and Circuit Overview Configuring Interfaces and Circuits OL-4580-01 CSS Interfaces and Circuits Config# interface e1 Interface and Circuit Configuration Quick StartLog in to the CSS Enter configuration mode by typing config # config Config# circuit VLAN3 Optional Display the interface configurationOptional Display the circuit configuration Config# circuit VLAN1 Configuring Interfaces Text string from 1 to 255 characters including spaces Configuring an InterfaceCommand. For example 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 Specifying Vlan Trunking for an Interface Bridging an Interface to a Vlan Config-trunkif2/3# no trunk To remove the default Vlan selection, enter Selecting a Default Vlan in a Trunk Configuring Interfaces and Circuits To restore the default port priority of 128, enter Configuring Spanning-Tree Bridge PathcostConfiguring Spanning-Tree Bridge Port Priority To restore the default path cost, enter Config-ife7#bridge state enable Configuring Port Fast on an InterfaceConfiguring Spanning-Tree Bridge State To disable the bridge state, enter Enabling Port Fast Config-if2/1#bridge port-fast enableConfig-if2/1#bridge port-fast disable Config# bridge bpdu-guard enabled Showing Port Fast Information Config# bridge bpdu-guard disabled Showing Bridge Configurations Showing Interface Configurations Bridge interface virtual LAN number Vlan Field Description Vlan on the port Showing Trunking ConfigurationsShowing Interface Information Port CSS port Showing Interface Duplex and Speed 6describes the fields in the show interface command outputConfig# show phy 2/1 Showing Interface Statistics 7describes the fields in the show phy command output This object contains an octet string of zero length 8describes the fields in the show mibii command outputInterface address at the protocol layer immediately That do not have such an address for example, a serial line # clear statistics Frame check sequence FCS check Showing Ethernet Interface ErrorsNumber of frames received on the interface that are an Integral number of octets in length but do not pass Field Description Shutting Down All Interfaces Shutting Down an Interface To restart all interfaces, enter Restarting an InterfaceRestarting All Interfaces To shut down all interfaces, enter Config# circuit VLAN7 Configuring CircuitsEntering Circuit Configuration Mode Configuring a Circuit IP Interface Configuring a Circuit-IP Broadcast Address Configuring a Circuit IP Address Configuring Circuit-IP Unreachables Configuring Circuit-IP Redirects Preference To disable router discovery, enterEnabling and Disabling a Circuit IP 100 To revert to the default of 224.0.0.1, enter Configuring the Router-Discovery LifetimeConfiguring Router-Discovery Limited-Broadcast Min-advertisement-interval Configuring the Router-Discovery Max-Advertisement-IntervalConfiguring the Router-Discovery Min-Advertisement-Interval Max-advertisement-interval To list an individual circuit, enter 10describes the fields in the show circuits command outputShowing Circuits # show ip interfaces Indicates whether RIP is Enabled or DisabledShowing IP Interfaces To stop running the RIP on the interface, enter Configuring RIP for an IP InterfaceEnabling RIP on an IP Interface Configuring RIP Send Version Configuring a RIP Default RouteConfiguring a RIP Receive 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# no setspan srcport 3/3 destport 3/12 Verifying the Span Configuration on a CSSConfig# setspan srcport 3/3 destport 3/12 copyBoth Field Description Configuring Spanning-Tree Bridging for the CSS CSS Spanning-Tree Bridging Quick Start Config# bridge aging-timeConfig# bridge forward-time Config# bridge hello-time Recommended Display bridge forwarding information Configuring Spanning-Tree Bridge Aging-TimeTo restore the default aging time of 300, enter Set the bridge spanning-tree maximum age, in seconds To restore the default hello time interval of 1, enter Configuring Spanning-Tree Bridge Hello-TimeConfiguring Spanning-Tree Bridge Max-Age To restore the default delay time of 4, enter To set the bridge maximum age to 21, enter Configuring Spanning-Tree Bridge PriorityTo restore the default maximum age of 6, enter Disabling Bridge Spanning-Tree Config# bridge spanning-tree disable Showing Bridge ConfigurationsTo disable spanning-tree bridging, enter To reenable spanning-tree bridging, enter Field Description OL-4580-01 Configuring Open Shortest Path First Ospf Ospf Routing Hierarchy Link-State Databases Ospf Overview Boundry Router2 Ospf Routing Hierarchy Backbone Area Autonomous SystemAreas Autonomous System Boundary Routers Area Border RoutersStub Area Link-State Databases Global Ospf Configuration Quick Start CSS Ospf Configuration Quick Start Enable Ospf on the CSS Config# circuit VLAN6 Ospf IP Interface Configuration Quick StartAccess global configuration mode. Enter Configure the IP interface as an Ospf interface. Enter # show ospf advertise Verifying Your Configuration# show ospf global # show ospf redistribute Config# ospf router-id Configuring Ospf on the CSSConfiguring the Ospf Router ID To delete the router ID on the CSS, disable Ospf and enter Enabling Ospf Configuring an AreaTo disable OSPF, enter Removing an Area Configuring Equal-Cost RoutesConfiguring Summarized Routes at an ABR 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 Preceded by an exclamation point Config# no ospf advertise Config# ospf default Advertising a Default ASE Route Advertising Other Routes Through Ospf Config# ospf default metric 10 type1Config# no ospf default Config# ospf redistribute firewall To stop advertising the RIP routes via OSPF, enter Configuring Ospf on a CSS IP InterfaceConfig# ospf redistribute rip metric 3 type1 Config# no ospf redistribute rip Configure this circuit as an Ospf circuit. Enter Configuring the CSS IP Interface as an Ospf Interface Assigning an Ospf Area to the Interface Configuring the Interface AttributesTo reset the interface to the default backbone area, enter To disable Ospf on the interface, enter Setting the Hello Packet Interval Setting the CostSetting the Dead Router Interval To remove the Ospf password from the interface, enter Setting the PasswordSetting the Poll Interval For example, to set the poll interval to 200 seconds, enter Setting the Priority of the CSSSetting the Retransmission Interval To set the retransmission interval to 10 seconds, enter Setting the Transit-Link DelayShowing Ospf Information To show information about Ospf areas, enter 3describes the fields in the show ospf areas command outputShowing Ospf Area Information Showing Global Statistics To show Ospf interfaces, enter Showing IP Interface Information Field Field Description Showing Link-State Databases # show ospf lsdb 6describes the fields in the show ospf lsdb command outputTo show the entire database, enter Field Description # show ospf ase 7describes the fields in the show ospf ase command outputShowing ASE Entries To show AS-external ASE entries in the LSDB, enter # show ospf advertise 192.168.11.1/24 Showing the Configured Advertised ASE RoutesTo show the configuration of ASE routes into OSPF, enter Firewall Field Description Showing the Redistribution Policy To show the Ospf neighbors, enter Showing Summary Route Configuration InformationTo show the summary-route configuration information, enter Showing Ospf Neighbors 11 Field Descriptions for show ospf neighbors Command Field Description Field Description Ospf Configuration in a Startup-Configuration File OL-4580-01 Protocol Configuring the Address Resolution Define a static ARP mapping ARP Configuration Quick StartSet the time, in seconds, to wait for an ARP resolution Config# no arp Configuring ARP Mapping Config# no arp timeout Configuring ARP TimeoutConfiguring ARP Wait To restore the default wait time of 5 seconds, enter # clear arp cache Updating ARP ParametersClearing ARP Parameters Showing ARP Information Show arp configfilemanagement-portsummaryiporhost # show arp summary 2describes the fields in the show arp command output # show arp file To display the global ARP configuration, enter4describes the fields in the show arp config command output # show arp config To display the resolution for a host IP address, enter OL-4580-01 Configuring Routing Information Protocol Config# rip redistribute static RIP Configuration Quick StartConfigure the CSS to advertise a route through RIP Config# rip advertise 192.168.1.0/24 Config# no rip advertise 192.168.1.0/24 Configuring RIP AdvertiseConfiguring RIP Redistribute 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-4580-01 Configuring the Internet Protocol IP Configuration Quick Start Configuring an IP Route Configuring the Internet Protocol Configuring an IP Route To remove a firewall route, enter For example, to configure a blackhole route, enterTo remove a static route, enter Config# no ip no-implicit-service Disabling an Implicit Service for the Static Route Next HopTo reset the default setting, enter Config# no ip source-route Configuring an IP Source RouteConfiguring the IP Record Route Config# ip source-route Syntax for this global configuration command is Configuring Box-to-Box RedundancyConfiguring IP Equal-Cost Multipath To disable box-to-box redundancy, enter Config# no ip subnet-broadcast Config# ip ecmp no-prefer-ingressConfig# no ip ecmp no-prefer-ingress Config# ip ecmp roundrobin Config# no ip uncond-bridging Configuring IP Unconditional BridgingTo restore the default behavior of the CSS, enter Config# ip uncond-bridging Example of Opportunistic Layer 3 Forwarding Config# ip route 0.0.0.0 /0 192.168.1.7 originated-packets Showing IP Configuration InformationConfig# ip opportunistic all Config# no ip opportunistic 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 Which the next hop of this route should be reached Showing IP StatisticsIndex value that identifies the local interface through TCP Statistics Icmp Statistics ARP Statistics Showing a Summary of IP Global Statistics Resetting IP Statistics Field Description OL-4580-01 Configuring the Cisco Discovery Protocol Recommended Display and verify CDP information for the CSS CDP Configuration Quick StartConfig# cdp holdTime Config# cdp timer Enabling CDP Setting the CDP Hold TimeTo disable CDP transmissions on the CSS, enter Config# no cdp holdTime Showing CDP Information Setting the CDP Transmission RateConfig# no cdp timer Configuring the Dhcp Relay Agent Optional Verify the Dhcp configuration Dhcp Relay Agent Configuration Quick StartEnable the Dhcp relay agent on the CSS circuit Enabling and Disabling Dhcp on the Circuit To disable the Dhcp relay agent on the circuit, enterConfig-circuitVLAN2#no dhcp relay-to Adding a Dhcp Destination on a Circuit # show dhcp-relay-agent global Displaying the Dhcp Relay ConfigurationConfig# no dhcp-agent max-hops Defining the Hops Field Value for Forwarding Dhcp Messages Field Description OL-4580-01 IN-1 Aging time, configuring for bridgingBpdu guard Displaying information Enabling IN-2 CLI IN-3 DNS IN-4 IP Ecmp IN-5 IN-6 IN-7 IN-8 Switched port analyzer. See also SpanMIB-II interface Ospf global IN-9 Symbol overview Zero, resetting Ethernet statistics to IN-10

Figure 1-3 Example of SPAN Connectivity

SSPAN Rx

SSPAN Tx