Cisco WS-C3020 - Displaying SPAN and RSPAN Status

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27-23

Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide

OL-8915-03

Chapter 27 Configuring SPAN and RSPAN

Displaying SPAN and RSPAN Status

To display the current SPAN or RSPAN configuration, use the show monitor user EXEC command. You

can also use the show running-config privileged EXEC command to display configured SPAN or

RSPAN sessions.

Main Page

Default Chapter3
- Table of Contents3
- Related Publications36
- Obtaining Documentation and Submitting a Service Request37
- Features39
Chapter 1 Overview40
- Ease-Of-Deployment and Ease-Of-Use Features40
- Performance Features40
- Management Options41
- Manageability Features42
- Availability and Redundancy Features43
- VLAN Features44
- Security Features44
- Qos and Cos Features46
- Layer 3 Features47
- Monitoring Features48
- Default Settings after Initial Switch Configuration48
- Design Concepts for Using the Switch51
- Where to Go Next54
CHAPTER 2 Using the Command-Line Interface2-155
- Understanding Command Modes55
- C H a P T E R 2 Using the Command-Line Interface56
- Understanding the Help System57
- Understanding Abbreviated Commands58
- Understanding no and Default Forms of Commands58
- Understanding CLI Error Messages59
- Using Configuration Logging59
- Using Command History60
- Using Editing Features61
- Searching and Filtering Output of Show and more Commands64
- Accessing the CLI64
Chapter 3 Assigning the Switch IP Address and Default Gateway65
- Understanding the Bootup Process65
- Assigning Switch Information66
- Checking and Saving the Running Configuration79
- Modifying the Startup Configuration81
Chapter 4 Configuring Cisco IOS CNS Agents89
- Understanding Cisco Configuration Engine Software89
- Understanding Cisco IOS Agents93
- Configuring Cisco IOS Agents94
- Displaying CNS Configuration102
CHAPTER 5 Administering the Switch104
- Managing the System Time and Date104
- Configuring Time and Date Manually113
- Configuring a System Name and Prompt116
- Creating a Banner119
- Managing the MAC Address Table121
  - Building the Address Table122
  - MAC Addresses and Vlans122
- Default MAC Address Table Configuration123
- Changing the Address Aging Time123
- Removing Dynamic Address Entries124
- Configuring MAC Address Notification Traps124
- Adding and Removing Static Address Entries126
- Configuring Unicast MAC Address Filtering127
- Displaying Address Table Entries128
  - Managing the ARP Table129
Chapter 6 Configuring SDM Templates131
- Understanding the SDM Templates131
  - Dual Ipv4 and Ipv6 SDM Templates132
- Configuring the Switch SDM Template133
- Displaying the SDM Templates135
CHAPTER 7 Configuring Switch-Based Authentication137
- Preventing Unauthorized Access to Your Switch137
- C H a P T E R 7 Configuring Switch-Based Authentication138
- Protecting Access to Privileged EXEC Commands138
- Controlling Switch Access with TACACS146
- Controlling Switch Access with RADIUS153
Controlling Switch Access with Kerberos168
- Understanding Kerberos168
- Kerberos Operation170
- Configuring Kerberos171
Configuring the Switch for Local Authentication and Authorization172
Configuring the Switch for Secure Shell173
- Understanding SSH173
  - SSH Servers, Integrated Clients, and Supported Versions173
  - Limitations174
- Configuring SSH174
- Displaying the SSH Configuration and Status177
Configuring the Switch for Secure Socket Layer HTTP177
- Understanding Secure HTTP Servers and Clients177
  - Certificate Authority Trustpoints178
  - Ciphersuites179
- Configuring Secure HTTP Servers and Clients180
- Displaying Secure HTTP Server and Client Status183
Configuring the Switch for Secure Copy Protocol184
- Information about Secure Copy184
CHAPTER 8 Configuring IEEE 802.1X Port-Based Authentication8-1185
Understanding IEEE 802.1X Port-Based Authentication185
- C H a P T E R 8 Configuring IEEE 802.1X Port-Based Authentication186
Configuring IEEE 802.1X Authentication186
- Device Roles186
- Authentication Process187
- Authentication Initiation and Message Exchange189
- Ports in Authorized and Unauthorized States191
- IEEE 802.1X Host Mode191
- IEEE 802.1X Accounting Attribute-Value Pairs192
- IEEE 802.1X Accounting192
- Using 802.1X Readiness Check193
- Using IEEE 802.1X Authentication with VLAN Assignment194
- Using IEEE 802.1X Authentication with Per-User Acls195
- Using IEEE 802.1X Authentication with Guest VLAN196
- Using IEEE 802.1X Authentication with Restricted VLAN197
- Using IEEE 802.1X Authentication with Inaccessible Authentication Bypass198
- Using IEEE 802.1X Authentication with Voice VLAN Ports199
- Using IEEE 802.1X Authentication with Port Security199
- Using IEEE 802.1X Authentication with Wake-On-LAN200
- Using IEEE 802.1X Authentication with MAC Authentication Bypass201
  - Network Admission Control Layer 2 IEEE 802.1X Validation202
- Using Web Authentication202
  - Web Authentication with Automatic MAC Check203
  - Configuring IEEE 802.1X Authentication203
- Default IEEE 802.1X Authentication Configuration204
- IEEE 802.1X Authentication Configuration Guidelines205
  - IEEE 802.1X Authentication205
  - VLAN Assignment, Guest VLAN, Restricted VLAN, and Inaccessible Authentication Bypass206
  - MAC Authentication Bypass207
- Configuring 802.1X Readiness Check207
- Configuring IEEE 802.1X Authentication209
- Configuring the Switch-To-RADIUS-Server Communication210
- Configuring the Host Mode212
- Configuring Periodic Re-Authentication212
- Manually Re-Authenticating a Client Connected to a Port213
- Changing the Quiet Period213
- Changing the Switch-To-Client Retransmission Time214
- Setting the Switch-To-Client Frame-Retransmission Number215
- Setting the Re-Authentication Number215
- Configuring IEEE 802.1X Accounting216
- Configuring a Guest VLAN217
- Configuring a Restricted VLAN218
- Configuring the Inaccessible Authentication Bypass Feature219
- Configuring IEEE 802.1X Authentication with Wol222
- Configuring MAC Authentication Bypass222
- Configuring NAC Layer 2 IEEE 802.1X Validation223
- Configuring Web Authentication224
- Disabling IEEE 802.1X Authentication on the Port227
- Resetting the IEEE 802.1X Authentication Configuration to the Default Values227
  - Displaying IEEE 802.1X Statistics and Status228
CHAPTER 9 Configuring Interface Characteristics9-1229
- Understanding Interface Types229
Understanding Interface Types230
- Access Ports231
- Internal Gigabit Ethernet Ports231
- Trunk Ports231
- Tunnel Ports232
Using Interface Configuration Mode235
- Procedures for Configuring Interfaces236
- Configuring a Range of Interfaces237
- Configuring and Using Interface Range Macros238
- Configuring Ethernet Interfaces240
Configuring Layer 3 Interfaces247
Configuring the System MTU249
Monitoring and Maintaining the Interfaces250
- Monitoring Interface Status251
- Clearing and Resetting Interfaces and Counters251
- Shutting down and Restarting the Interface252
Chapter 10 Configuring Smartports Macros253
- Understanding Smartports Macros253
- Configuring Smartports Macros254
- Displaying Smartports Macros260
Chapter 11 Configuring Vlans261
- Understanding Vlans261
  - Supported Vlans262
  - VLAN Port Membership Modes263
- Configuring Normal-Range Vlans264
- Token Ring Vlans266
- Normal-Range VLAN Configuration Guidelines266
- VLAN Configuration Mode Options267
- Saving VLAN Configuration267
- Creating or Modifying an Ethernet VLAN269
- Deleting a VLAN270
- Assigning Static-Access Ports to a VLAN271
  - Configuring Extended-Range Vlans272
  - Configuring VLAN Trunks276
- Encapsulation Types278
- Configuring an Ethernet Interface as a Trunk Port279
- Default Layer 2 Ethernet Interface VLAN Configuration279
- Configuring Trunk Ports for Load Sharing284
  - Load Sharing Using STP Port Priorities284
  - Load Sharing Using STP Path Cost286
Chapter 12 Configuring VTP296
- The VTP Domain296
- VTP Modes297
- VTP Advertisements297
- VTP Version 2298
- VTP Pruning298
- Configuring VTP298
  - Default VTP Configuration300
- VTP Configuration Options301
  - VTP Configuration in Global Configuration Mode301
  - VTP Configuration in VLAN Database Configuration Mode301
- VTP Configuration Guidelines302
- Configuring a VTP Server303
- Configuring a VTP Client305
- Disabling VTP (VTP Transparent Mode)306
- Enabling VTP Version 2307
- Enabling VTP Pruning308
  - Monitoring VTP310
    - Table310
- Adding a VTP Client Switch to a VTP Domain308
Chapter 13 Configuring Voice VLAN311
- Understanding Voice VLAN311
  - Cisco IP Phone Voice Traffic312
  - Cisco IP Phone Data Traffic312
- Configuring Voice VLAN313
- Displaying Voice VLAN317
Chapter 14 Configuring Private Vlans319
- Understanding Private Vlans319
- Configuring Private Vlans323
- Monitoring Private Vlans332
Chapter 15 Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling333
- Understanding IEEE 802.1Q Tunneling333
- Configuring IEEE 802.1Q Tunneling336
- Understanding Layer 2 Protocol Tunneling339
- Monitoring and Maintaining Tunneling Status350
Understanding Spanning-Tree Features351
- Configuring STP352
Chapter 16 Configuring STP352
- STP Overview352
- Spanning-Tree Topology and Bpdus353
  - Bridge ID, Switch Priority, and Extended System ID354
  - Spanning-Tree Interface States354
    - Blocking State355
Spanning-Tree Interface States355
- Forwarding State356
- Learning State356
- Listening State356
- Disabled State357
- How a Switch or Port Becomes the Root Switch or Root Port357
- Accelerated Aging to Retain Connectivity358
- Spanning Tree and Redundant Connectivity358
- Spanning-Tree Address Management358
- Spanning-Tree Modes and Protocols359
- Supported Spanning-Tree Instances359
Chapter 17 Configuring MSTP373
- Understanding MSTP374
  - Multiple Spanning-Tree Regions374
- IST, CIST, and CST375
  - Operations Within an MST Region375
  - Operations between MST Regions376
- Hop Count377
  - IEEE 802.1S Terminology377
- Boundary Ports378
- IEEE 802.1S Implementation378
- Interoperability with IEEE 802.1D STP380
  - Understanding RSTP380
  - Configuring MSTP Features386
- Specifying the MST Region Configuration and Enabling MSTP388
- Configuring the Root Switch389
- Configuring a Secondary Root Switch390
- Configuring Port Priority391
  - Configuring Path Cost392
- Configuring the Switch Priority393
- Configuring the Hello Time394
- Configuring the Forwarding-Delay Time395
- Configuring the Maximum-Aging Time395
- Configuring the Maximum-Hop Count396
- Specifying the Link Type to Ensure Rapid Transitions396
- Designating the Neighbor Type397
- Restarting the Protocol Migration Process397
  - Displaying the MST Configuration and Status398
CHAPTER 18 Configuring Optional Spanning-Tree Features399
- Understanding Optional Spanning-Tree Features399
Understanding Optional Spanning-Tree Features400
- Understanding Port Fast400
  - Configuring Optional Spanning-Tree Features400
- Understanding BPDU Guard400
- Understanding BPDU Filtering401
- Understanding Uplinkfast401
- Understanding Backbonefast403
- Understanding Etherchannel Guard405
- Understanding Root Guard406
  - Configuring Optional Spanning-Tree Features407
- Default Optional Spanning-Tree Configuration407
  - Understanding Loop Guard407
- Enabling Port Fast408
- Optional Spanning-Tree Configuration Guidelines408
- Enabling BPDU Guard409
- Enabling BPDU Filtering410
- Enabling Uplinkfast for Use with Redundant Links411
- Enabling Backbonefast411
- Enabling Etherchannel Guard412
- Enabling Root Guard413
  - Displaying the Spanning-Tree Status414
- Enabling Loop Guard413
Chapter 19 Configuring Flex Links and the MAC Address-Table Move Update Feature415
- Understanding Flex Links and the MAC Address-Table Move Update415
- Configuring Flex Links and MAC Address-Table Move Update418
- Monitoring Flex Links and the MAC Address-Table Move Update Information425
CHAPTER 20 Configuring DHCP Features and IP Source Guard427
- Understanding DHCP Features427
Understanding DHCP Features429
- Cisco IOS DHCP Server Database432
- DHCP Snooping Binding Database432
Configuring DHCP Features433
Displaying DHCP Snooping Information441
Understanding IP Source Guard441
- Source IP Address Filtering442
- Source IP and MAC Address Filtering442
Configuring IP Source Guard442
- Default IP Source Guard Configuration442
- IP Source Guard Configuration Guidelines442
- Enabling IP Source Guard443
- Displaying IP Source Guard Information444
Chapter 21 Configuring Dynamic ARP Inspection445
- Understanding Dynamic ARP Inspection445
- Configuring Dynamic ARP Inspection448
  - Default Dynamic ARP Inspection Configuration449
- Dynamic ARP Inspection Configuration Guidelines450
- Configuring Dynamic ARP Inspection in DHCP Environments451
- Configuring ARP Acls for Non-DHCP Environments452
- Limiting the Rate of Incoming ARP Packets454
- Performing Validation Checks456
- Configuring the Log Buffer457
  - Displaying Dynamic ARP Inspection Information458
Chapter 22 Configuring IGMP Snooping and MVR462
Understanding IGMP Snooping462
- IGMP Versions463
- Joining a Multicast Group463
- Leaving a Multicast Group465
- Immediate Leave466
- IGMP Configurable-Leave Timer466
- IGMP Report Suppression466
- Configuring IGMP Snooping467
Displaying IGMP Snooping Information476
Understanding Multicast VLAN Registration477
- Using MVR in a Multicast Television Application478
- Configuring MVR480
Displaying MVR Information484
Configuring IGMP Filtering and Throttling484
- Default IGMP Filtering and Throttling Configuration485
- Configuring IGMP Profiles485
- Applying IGMP Profiles487
- Setting the Maximum Number of IGMP Groups487
- Configuring the IGMP Throttling Action488
Displaying IGMP Filtering and Throttling Configuration489
CHAPTER 23 Configuring Port-Based Traffic Control23-1491
- Configuring Storm Control491
- Configuring Protected Ports496
- Configuring Port Blocking498
  - Default Port Blocking Configuration498
  - Blocking Flooded Traffic on an Interface498
- Configuring Port Security499
- Displaying Port-Based Traffic Control Settings510
Chapter 24 Configuring CDP511
- Understanding CDP511
- Configuring CDP512
- Monitoring and Maintaining CDP515
Chapter 25 Configuring LLDP and LLDP-MED517
- Understanding LLDP and LLDP-MED517
  - Understanding LLDP517
  - Understanding LLDP-MED518
- Configuring LLDP and LLDP-MED519
- Monitoring and Maintaining LLDP and LLDP-MED523
Chapter 26 Configuring UDLD525
- Understanding UDLD525
  - Modes of Operation525
  - Methods to Detect Unidirectional Links526
- Configuring UDLD527
- Displaying UDLD Status530
Chapter 27 Configuring SPAN and RSPAN531
- Understanding SPAN and RSPAN531
- Configuring SPAN and RSPAN539
- Displaying SPAN and RSPAN Status553
Chapter 28 Configuring RMON555
- Understanding RMON555
- Configuring RMON556
- Displaying RMON Status560
Chapter 29 Configuring System Message Logging561
- Understanding System Message Logging561
- Configuring System Message Logging562
- Displaying the Logging Configuration573
Chapter 30 Configuring SNMP575
- Understanding SNMP575
- Configuring SNMP580
- Displaying SNMP Status591
Chapter 31 Configuring Network Security with Acls593
- Understanding Acls593
  - Supported Acls594
  - Handling Fragmented and Unfragmented Traffic597
- Configuring Ipv4 Acls598
- Creating Named MAC Extended Acls618
  - Applying a MAC ACL to a Layer 2 Interface619
- Configuring VLAN Maps620
- Using VLAN Maps with Router Acls628
  - VLAN Maps and Router ACL Configuration Guidelines628
  - Examples of Router Acls and VLAN Maps Applied to Vlans629
    - Acls and Switched Packets629
    - Acls and Routed Packets630
- Displaying Ipv4 ACL Configuration630
Chapter 32 Configuring Qos633
- Understanding Qos634
- Configuring Auto-Qos652
- Displaying Auto-Qos Information662
- Configuring Standard Qos662
- Displaying Standard Qos Information710
Chapter 33 Configuring Etherchannels and Layer 2 Trunk Failover713
- Understanding Etherchannels713
- Configuring Etherchannels720
- Displaying Etherchannel, Pagp, and LACP Status732
- Understanding Layer 2 Trunk Failover732
  - Configuring Layer 2 Trunk Failover733
Chapter 34 Configuring IP Unicast Routing737
- Understanding IP Routing737
  - Types of Routing738
- Steps for Configuring Routing739
- Configuring IP Addressing739
- Enabling IP Unicast Routing753
- Configuring RIP753
- Configuring Stub Routing759
- Configuring Protocol-Independent Features763
- Monitoring and Maintaining the IP Network773
Chapter 35 Configuring Ipv6 Host Functions775
- Understanding Ipv6775
- Configuring Ipv6787
- Displaying Ipv6792
Chapter 36 Configuring Ipv6 MLD Snooping795
- Understanding MLD Snooping795
- Configuring Ipv6 MLD Snooping799
- Displaying MLD Snooping Information805
Chapter 37 Configuring Ipv6 Acls807
- Understanding Ipv6 Acls807
  - Supported ACL Features808
  - Ipv6 ACL Limitations808
- Configuring Ipv6 Acls809
- Displaying Ipv6 Acls813
Chapter 38 Configuring HSRP and Enhanced Object Tracking815
- Understanding HSRP815
  - Multiple HSRP817
- Configuring HSRP818
- Displaying HSRP Configurations825
- Configuring Enhanced Object Tracking826
Chapter 39 Configuring Cisco IOS IP Slas Operations835
- Understanding Cisco IOS IP Slas835
- Configuring IP Slas Operations839
- Monitoring IP Slas Operations840
Chapter 40 Troubleshooting841
- Recovering from a Software Failure842
- Recovering from a Lost or Forgotten Password843
  - Procedure with Password Recovery Enabled844
  - Procedure with Password Recovery Disabled846
- Preventing Autonegotiation Mismatches847
- SFP Module Security and Identification848
- Monitoring SFP Module Status848
- Monitoring Temperature849
- Using Ping849
- Using TDR854
Chapter 41 Configuring Online Diagnostics861
- Understanding How Online Diagnostics Work861
- Scheduling Online Diagnostics862
- Configuring Health-Monitoring Diagnostics862
- Running Online Diagnostic Tests863
  - Starting Online Diagnostic Tests863
- Displaying Online Diagnostic Tests and Test Results863
Appendix865
Supported Mibs865
- MIB List865
Appendix A Supported MIB866
- MIB List866
- Using FTP to Access the MIB Files867
- Using FTP to Access the MIB Files868
Appendix869
Working with the Cisco IOS File System, Configuration Files, and Software Images869
- Working with the Flash File System869
- Copying Files872
- Deleting Files873
- Creating, Displaying, and Extracting Tar Files873
- Displaying the Contents of a File876
- Working with Configuration Files877
- Working with Software Images891
Appendix907
Unsupported Commands in Cisco IOS Release 12.2(44)SE907
- Access Control Lists907
- Archive Commands908
  - Unsupported Privileged EXEC Commands908
- ARP Commands908
  - Unsupported Global Configuration Commands908
  - Unsupported Interface Configuration Commands908
- Bootloader Commands908
  - Unsupported User EXEC Command908
  - Unsupported Global Configuration Command908
- Debug Commands909
  - Unsupported Privileged EXEC Commands909
- Hsrp909
Qos913
- Unsupported Global Configuration Command913
- Unsupported Interface Configuration Commands913
- Unsupported Policy-Map Configuration Command913
- Radius914
  - Unsupported Global Configuration Commands914
Snmp914
- Spanning Tree914
  - Unsupported Global Configuration Command914
  - Unsupported Interface Configuration Command914
Vlan914
- Unsupported User EXEC Commands915
Vtp915
- Unsupported Privileged EXEC Command915
I N D E X917

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