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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide

OL-9639-07

Chapter 29 Configuring SNMP

Displaying SNMP Status

Ta b l e 29-6 Commands for Displaying SNMP Information

Feature Default Setting

show snmp Displays SNMP statistics.

show snmp engineID [local | remote] Displays information on the local SNMP engine and all remote engines that have

been configured on the device.

show snmp group Displays information on each SNMP group on the network.

show snmp mib bulk transfer Displays transfer status of files generated by the Periodic MIB Data Collection and

Transfer Mechanism (bulk statistics feature).

show snmp pending Displays information on pending SNMP requests.

show snmp sessions Displays information on the current SNMP sessions.

show snmp user Displays information on each SNMP user name in the SNMP users table.

Main Page

Default Chapter3
- Table of Contents3
- Related Publications42
- Obtaining Documentation and Submitting a Service Request43
- Features45
Chapter 1 Overview46
- Performance Features46
- Management Options47
- Manageability Features47
- Availability Features49
- VLAN Features50
- Security Features50
- Quality of Service and Class of Service Features52
- Layer 2 Virtual Private Network Services53
- Layer 3 Features53
- Layer 3 VPN Services54
- Monitoring Features54
- Default Settings after Initial Switch Configuration55
- Network Configuration Examples58
- Where to Go Next61
- Understanding no and Default Forms of Commands63
- Understanding CLI Error Messages63
- Using Command History63
CHAPTER 2 Using the Command-Line Interface63
- Understanding Command Modes63
- C H a P T E R 2 Using the Command-Line Interface64
- Understanding the Help System65
- Understanding Abbreviated Commands65
- Using Editing Features68
- Searching and Filtering Output of Show and more Commands70
- Accessing the CLI71
  - Accessing the CLI through a Console Connection or through Telnet71
CHAPTER 3 Assigning the Switch IP Address and Default Gateway73
- Understanding the Boot Process73
- C H a P T E R 3 Assigning the Switch IP Address and Default Gateway74
- Assigning Switch Information74
- Checking and Saving the Running Configuration86
  - Modifying the Startup Configuration88
  - Scheduling a Reload of the Software Image93
    - Configuring a Scheduled Reload93
    - Displaying Scheduled Reload Information94
CHAPTER 4 Configuring Cisco IOS Configuration Engine95
- Understanding Cisco Configuration Engine Software95
- Understanding Cisco IOS Agents99
- Configuring Cisco IOS Agents100
- Displaying CNS Configuration109
- Administering the Switch111
- Managing the System Time and Date111
Chapter 5 Administering the Switch112
- Understanding the System Clock112
- Understanding Network Time Protocol112
- Configuring NTP114
- Configuring Time and Date Manually121
Step 1132
Configure Terminal132
Copy Running-Config Startup-Config132
- Enter Global Configuration Mode132
- Return to Privileged EXEC Mode132
- (Optional) Save Your Entries in the Configuration File132
- Changing the Address Aging Time132
- Removing Dynamic Address Entries133
- Configuring MAC Address Notification Traps133
- Adding and Removing Static Address Entries135
- Configuring Unicast MAC Address Filtering136
- Disabling MAC Address Learning on a VLAN137
- Displaying Address Table Entries138
  - Managing the ARP Table139
Configuring SDM Templates141
- Understanding the SDM Templates141
Chapter 6 Configuring SDM Template142
- Dual Ipv4 and Ipv6 SDM Templates142
- Understanding the SDM Templates142
- Configuring the Switch SDM Template143
- Displaying the SDM Templates145
Chapter 7 Configuring Switch-Based Authentication147
- Preventing Unauthorized Access to Your Switch147
- Protecting Access to Privileged EXEC Commands148
- Controlling Switch Access with TACACS156
- Controlling Switch Access with RADIUS163
- Default RADIUS Configuration166
- Identifying the RADIUS Server Host166
- Configuring RADIUS Login Authentication169
- Defining AAA Server Groups171
- Configuring RADIUS Authorization for User Privileged Access and Network Services173
- Starting RADIUS Accounting174
- Configuring Settings for All RADIUS Servers175
- Configuring the Switch to Use Vendor-Specific RADIUS Attributes175
- Configuring the Switch for Vendor-Proprietary RADIUS Server Communication176
- Configuring RADIUS Server Load Balancing177
CHAPTER 8 Configuring IEEE 802.1X Port-Based Authentication189
- Understanding IEEE 802.1X Port-Based Authentication189
  - C H a P T E R 8 Configuring IEEE 802.1X Port-Based Authentication190
  - Device Roles190
- Authentication Initiation and Message Exchange191
- Ports in Authorized and Unauthorized States192
- IEEE 802.1X Accounting193
- IEEE 802.1X Accounting Attribute-Value Pairs193
- IEEE 802.1X Host Mode194
- Using 802.1X Readiness Check195
- Using IEEE 802.1X with Port Security195
- Using IEEE 802.1X with VLAN Assignment196
- Switch Supplicant with Network Edge Access Topology (NEAT)197
  - Configuring IEEE 802.1X Authentication198
    - Default IEEE 802.1X Configuration198
- IEEE 802.1X Configuration Guidelines200
  - Maximum Number of Allowed Devices Per Port200
  - Configuring 802.1X Readiness Check201
- Configuring IEEE 802.1X Authentication202
  - Configuring IEEE 802.1X Violation Modes202
- Configuring the Switch-To-RADIUS-Server Communication204
- Configuring Periodic Re-Authentication205
- Manually Re-Authenticating a Client Connected to a Port205
- Changing the Quiet Period206
- Changing the Switch-To-Client Retransmission Time206
- Setting the Switch-To-Client Frame-Retransmission Number207
- Setting the Re-Authentication Number208
- Configuring the Host Mode208
Configuring IEEE 802.1X Accounting209
- Resetting the IEEE 802.1X Configuration to the Default Values209
Configuring 802.1X Switch Supplicant with NEAT210
- Displaying IEEE 802.1X Statistics and Status212
- Understanding Interface Types213
  - UNI, NNI, and ENI Port Types214
  - Port-Based Vlans214
Chapter 9 Configuring Interface214
- Switch Ports215
- Routed Ports217
- Switch Virtual Interfaces217
- Etherchannel Port Groups218
  - Dual-Purpose Ports218
  - Connecting Interfaces219
- Using Interface Configuration Mode220
- Configuring Ethernet Interfaces224
  - Default Ethernet Interface Configuration224
- Configuring the Port Type226
- Configuring Interface Speed and Duplex Mode227
  - Speed and Duplex Configuration Guidelines227
  - Setting the Interface Speed and Duplex Parameters228
- Configuring a Dual-Purpose Port230
- Configuring IEEE 802.3X Flow Control232
- Configuring Auto-MDIX on an Interface233
- Adding a Description for an Interface234
Configuring Command Macros241
- Understanding Command Macros241
Chapter 10 Configuring Command Macro242
Configuring Command Macros242
- Default Command Macro Configuration242
- Command Macro Configuration Guidelines242
- Creating Command Macros243
- Applying Command Macros244
- Displaying Command Macros245
Configuring Vlans247
- Understanding Vlans247
  - Supported Vlans248
  - Normal-Range Vlans248
Chapter 11 Configuring VLAN248
- Extended-Range Vlans250
- VLAN Port Membership Modes250
- UNI-ENI Vlans251
- Creating and Modifying Vlans253
- Displaying Vlans260
- Configuring VLAN Trunks260
- Configuring VMPS269
- Understanding Private Vlans277
  - Types of Private Vlans and Private-VLAN Ports277
Chapter 12 Configuring Private VLAN278
- IP Addressing Scheme with Private Vlans280
- Private Vlans Across Multiple Switches280
- Private Vlans and Unicast, Broadcast, and Multicast Traffic281
- Private Vlans and Svis281
- Configuring Private Vlans281
- Monitoring Private Vlans290
CHAPTER 13 Configuring IEEE 802.1Q Tunneling and Layer 2 Protocol Tunneling291
- Understanding 802.1Q Tunneling291
- C H a P T E R 13 Configuring IEEE 802.1Q Tunneling and Layer 2 Protocol Tunneling292
- Configuring 802.1Q Tunneling294
- Understanding Layer 2 Protocol Tunneling297
- Configuring Layer 2 Protocol Tunneling300
- Monitoring and Maintaining Tunneling and Mapping Status308
- Configuring STP309
- Understanding Spanning-Tree Features309
Chapter 14 Configuring STP310
Understanding Spanning-Tree Features310
- STP Overview310
- Spanning-Tree Topology and Bpdus311
  - Bridge ID, Switch Priority, and Extended System ID312
  - Spanning-Tree Interface States312
Spanning-Tree Interface States313
- Blocking State314
- Listening State314
- Disabled State315
- Forwarding State315
- How a Switch or Port Becomes the Root Switch or Root Port315
  - Learning State315
- Spanning Tree and Redundant Connectivity316
- Spanning-Tree Address Management317
- Accelerated Aging to Retain Connectivity317
Default Spanning-Tree Configuration320
- Spanning-Tree Configuration Guidelines320
  - STP and IEEE 802.1Q Trunks319
- Enabling Spanning Tree on an ENI321
  - Changing the Spanning-Tree Mode322
- Disabling Spanning Tree323
- Configuring the Root Switch323
- Configuring a Secondary Root Switch325
- Configuring Port Priority325
- Configuring Path Cost327
- Configuring the Switch Priority of a VLAN328
- Configuring Spanning-Tree Timers329
Chapter 15 Configuring MSTP334
- Understanding MSTP334
- Understanding RSTP340
- Configuring MSTP Features346
  - Default MSTP Configuration346
Default MSTP Configuration347
- MSTP Configuration Guidelines347
- Specifying the MST Region Configuration and Enabling MSTP348
- Configuring the Root Switch349
- Configuring a Secondary Root Switch350
- Configuring Port Priority351
- Configuring Path Cost353
- Configuring the Switch Priority354
- Configuring the Hello Time355
- Configuring the Forwarding-Delay Time355
- Configuring the Maximum-Aging Time356
- Configuring the Maximum-Hop Count356
- Specifying the Link Type to Ensure Rapid Transitions357
- Designating the Neighbor Type357
- Restarting the Protocol Migration Process358
  - Displaying the MST Configuration and Status359
CHAPTER 16 Configuring Optional Spanning-Tree Features361
Understanding Optional Spanning-Tree Features361
- Understanding Port Fast362
  - Configuring Optional Spanning-Tree Features362
- Understanding BPDU Guard363
- Understanding BPDU Filtering363
- Understanding Etherchannel Guard363
- Understanding Root Guard364
- Understanding Loop Guard365
  - Configuring Optional Spanning-Tree Features365
    - Default Optional Spanning-Tree Configuration365
- Optional Spanning-Tree Configuration Guidelines366
- Enabling Port Fast366
- Enabling BPDU Guard367
- Enabling BPDU Filtering368
- Enabling Etherchannel Guard369
- Enabling Root Guard370
  - Displaying the Spanning-Tree Status371
    - Table371
- Enabling Loop Guard370
CHAPTER 17 Configuring Resilient Ethernet Protocol373
- Understanding REP373
- Configuring REP378
- Monitoring REP386
CHAPTER 18 Configuring Flex Links and the MAC Address-Table Move Update Feature387
- Understanding Flex Links and the MAC Address-Table Move Update387
- Configuring Flex Links and MAC Address-Table Move Update393
- Monitoring Flex Links and the MAC Address-Table Move Update400
Chapter 19 Configuring DHCP Features and IP Source Guard401
- Understanding DHCP Features401
- Configuring DHCP Features407
- Displaying DHCP Snooping Information415
- Understanding DHCP Server Port-Based Address Allocation415
- Configuring DHCP Server Port-Based Address Allocation415
- Displaying DHCP Server Port-Based Address Allocation418
- Understanding IP Source Guard418
  - Source IP Address Filtering419
  - Source IP and MAC Address Filtering419
- Configuring IP Source Guard419
- Displaying IP Source Guard Information422
CHAPTER 20 Configuring Dynamic ARP Inspection423
- Understanding Dynamic ARP Inspection423
- Configuring Dynamic ARP Inspection426
- Displaying Dynamic ARP Inspection Information436
Chapter 21 Configuring IGMP Snooping and MVR439
- Understanding IGMP Snooping439
- Configuring IGMP Snooping445
- Displaying IGMP Snooping Information452
- Understanding Multicast VLAN Registration453
  - Using MVR in a Multicast Television Application454
- Configuring MVR456
- Displaying MVR Information461
- Configuring IGMP Filtering and Throttling461
- Displaying IGMP Filtering and Throttling Configuration466
Chapter 22 Configuring Port-Based Traffic Control469
- Configuring Storm Control469
- Configuring Protected Ports474
- Configuring Port Blocking475
  - Default Port Blocking Configuration475
  - Blocking Flooded Traffic on an Interface476
- Configuring Port Security476
- Displaying Port-Based Traffic Control Settings486
Configuring CDP487
- Understanding CDP487
  - Default CDP Configuration488
  - Configuring the CDP Characteristics488
Chapter 23 Configuring CDP489
- Disabling and Enabling CDP489
- Disabling and Enabling CDP on an Interface490
- Monitoring and Maintaining CDP491
- Configuring LLDP and LLDP-MED493
- Understanding LLDP and LLDP-MED493
  - Understanding LLDP493
Chapter 24 Configuring LLDP and LLDP-MED494
- Understanding LLDP-MED494
- Configuring LLDP and LLDP-MED495
- Monitoring and Maintaining LLDP and LLDP-MED500
- Understanding UDLD501
  - Modes of Operation501
Chapter 25 Configuring UDLD502
- Methods to Detect Unidirectional Links502
- Configuring UDLD503
- Displaying UDLD Status506
- Configuring SPAN and RSPAN507
- Understanding SPAN and RSPAN507
Chapter 26 Configuring SPAN and RSPAN508
- Local SPAN508
- Remote SPAN508
- SPAN and RSPAN Concepts and Terminology509
- SPAN and RSPAN Interaction with Other Features514
- Configuring SPAN and RSPAN515
- Displaying SPAN and RSPAN Status528
  - Understanding RMON529
Chapter 27 Configuring RMON530
- Default RMON Configuration531
- Configuring RMON Alarms and Events531
- Collecting Group History Statistics on an Interface533
- Collecting Group Ethernet Statistics on an Interface533
- Displaying RMON Status534
- Understanding System Message Logging535
CHAPTER 28 Configuring System Message Logging536
- System Log Message Format536
- C H a P T E R 28 Configuring System Message Logging537
- Default System Message Logging Configuration537
- Disabling Message Logging538
- Setting the Message Display Destination Device539
- Synchronizing Log Messages540
- Enabling and Disabling Time Stamps on Log Messages541
- Enabling and Disabling Sequence Numbers in Log Messages542
- Defining the Message Severity Level542
- Limiting Syslog Messages Sent to the History Table and to SNMP544
- Enabling the Configuration-Change Logger544
- Configuring UNIX Syslog Servers546
  - Logging Messages to a UNIX Syslog Daemon546
  - Configuring the UNIX System Logging Facility546
- Displaying the Logging Configuration547
- Understanding SNMP549
Chapter 29 Configuring SNMP550
- SNMP Versions550
- SNMP Manager Functions551
- SNMP Agent Functions552
- SNMP Community Strings552
- Using SNMP to Access MIB Variables552
- SNMP Notifications553
- SNMP Ifindex MIB Object Values553
- MIB Data Collection and Transfer554
- Configuring SNMP554
- Default SNMP Configuration555
- SNMP Configuration Guidelines555
- Disabling the SNMP Agent556
- Configuring Community Strings556
- Configuring SNMP Groups and Users558
- Configuring SNMP Notifications560
- Setting the CPU Threshold Notification Types and Values564
- Setting the Agent Contact and Location Information565
- Limiting TFTP Servers Used through SNMP565
- Configuring MIB Data Collection and Transfer566
- Configuring the Cisco Process MIB CPU Threshold Table568
- SNMP Examples569
- Displaying SNMP Status570
- Understanding Embedded Event Manager573
  - Event Detectors574
  - C H a P T E R 30 Configuring Embedded Event Manager575
  - Embedded Event Manager Actions576
  - Embedded Event Manager Policies576
  - Embedded Event Manager Environment Variables576
CHAPTER 30 Configuring Embedded Event Manager577
- Registering and Defining an Embedded Event Manager Applet577
- Registering and Defining an Embedded Event Manager TCL Script578
- Displaying Embedded Event Manager Information578
CHAPTER 31 Configuring Network Security with Acls579
- Understanding Acls579
- Configuring Ipv4 Acls584
- Creating Named MAC Extended Acls604
  - Applying a MAC ACL to a Layer 2 Interface606
- Configuring VLAN Maps607
- Using VLAN Maps with Router Acls613
  - VLAN Maps and Router ACL Configuration Guidelines614
  - Examples of Router Acls and VLAN Maps Applied to Vlans615
- Displaying Ipv4 ACL Configuration617
- C H a P T E R 32 Configuring Control-Plane Security620
- Understanding Control-Plane Security620
CHAPTER 32 Configuring Control-Plane Security624
- Monitoring Control-Plane Security626
- Understanding Qos627
Chapter 33 Configuring Qo628
- Modular Qos CLI629
- Input and Output Policies630
Configuring Qos655
- Default Qos Configuration656
- Qos Configuration Guidelines656
- Using Acls to Classify Traffic657
- Displaying Qos Information691
  - Qos Statistics691
- Configuration Examples for Policy Maps692
- Understanding Etherchannels701
CHAPTER 34 Configuring Etherchannels709
- Default Etherchannel Configuration710
- Etherchannel Configuration Guidelines710
- Configuring Layer 2 Etherchannels711
- Configuring Layer 3 Etherchannels714
- Displaying Etherchannel, Pagp, and LACP Status722
- Understanding Link-State Tracking722
- Configuring Link-State Tracking724
  - Default Link-State Tracking Configuration724
  - Link-State Tracking Configuration Guidelines724
- Displaying Link-State Tracking Status725
- Configuring Ip Unicast Routing727
Chapter 35 Configuring IP Unicast Routing728
- Understanding IP Routing728
  - Types of Routing728
- Steps for Configuring Routing729
- Configuring IP Addressing729
- Enabling Ipv4 Unicast Routing743
- Configuring ISO CLNS Routing788
  - Configuring IS-IS Dynamic Routing789
  - Monitoring and Maintaining IS-IS797
- Configuring BFD798
- Configuring Multi-VRF CE807
- Configuring Protocol-Independent Features821
- Monitoring and Maintaining the IP Network835
  - Understanding Ipv6837
  - C H a P T E R 36 Configuring Ipv6 Unicast Routing838
CHAPTER 36 Configuring Ipv6 Unicast Routing838
- Ipv6 Addresses838
- Supported Ipv6 Unicast Routing Features838
Configuring Ipv6844
- Default Ipv6 Configuration845
- Configuring Ipv6 Addressing and Enabling Ipv6 Routing845
- Configuring Default Router Preference847
- Configuring Ipv4 and Ipv6 Protocol Stacks848
- Configuring DHCP for Ipv6 Address Assignment849
- Displaying Ipv6858
- Understanding Ipv6 Acls863
Chapter 37 Configuring Ipv6 ACL864
- Supported ACL Features864
- Ipv6 ACL Limitations864
- Configuring Ipv6 Acls864
- Displaying Ipv6 Acls870
- Understanding HSRP871
Chapter 38 Configuring HSRP872
- HSRP Versions873
- Multiple HSRP874
- Configuring HSRP875
  - Default HSRP Configuration875
  - HSRP Configuration Guidelines875
- Enabling HSRP876
- Configuring HSRP Priority877
- Configuring HSRP Authentication and Timers880
- Configuring MHSRP880
- Displaying HSRP Configurations882
- Enabling HSRP Support for ICMP Redirect Messages882
CHAPTER 39 Configuring Cisco IOS IP Slas Operations883
- Understanding Cisco IOS IP Slas883
- Configuring IP Slas Operations888
- Monitoring IP Slas Operations895
CHAPTER 40 Configuring Enhanced Object Tracking897
- Understanding Enhanced Object Tracking897
- C H a P T E R 40 Configuring Enhanced Object Tracking898
- Configuring Enhanced Object Tracking Features898
- Monitoring Enhanced Object Tracking908
- C H a P T E R 41 Configuring Ethernet OAM, CFM, and E-LMI912
CHAPTER 41 Configuring Ethernet OAM, CFM, and E-LMI912
- Understanding Ethernet CFM912
- Configuring Ethernet CFM915
- Displaying Ethernet CFM Information923
- Understanding the Ethernet OAM Protocol924
  - OAM Features925
  - OAM Messages925
- Setting up and Configuring Ethernet OAM926
- Displaying Ethernet OAM Protocol Information934
- Understanding E-LMI934
  - E-LMI Interaction with OAM Manager935
  - CFM Interaction with OAM Manager935
- Configuring E-LMI936
CHAPTER 42 Configuring IP Multicast Routing954
- Default Multicast Routing Configuration954
- Multicast Routing Configuration Guidelines955
- Configuring Source Specific Multicast Mapping963
- Configuring a Rendezvous Point968
- Using Auto-RP and a BSR978
- Monitoring the RP Mapping Information979
- Troubleshooting Pimv1 and Pimv2 Interoperability Problems979
- Configuring Advanced PIM Features979
- Configuring Optional IGMP Features982
- Configuring Optional Multicast Routing Features989
  - Configuring Sdr Listener Support989
    - Enabling Sdr Listener Support989
    - Limiting How Long an Sdr Cache Entry Exists990
  - Configuring an IP Multicast Boundary990
- Monitoring and Maintaining IP Multicast Routing992
Chapter 43 Configuring MSDP996
- MSDP Operation996
- MSDP Benefits997
- Configuring MSDP997
Chapter 44 Troubleshooting1014
- Recovering from Corrupted Software by Using the Xmodem Protocol1014
- Recovering from a Lost or Forgotten Password1015
  - Procedure with Password Recovery Enabled1017
  - Procedure with Password Recovery Disabled1019
- Preventing Autonegotiation Mismatches1020
- SFP Module Security and Identification1021
- Monitoring SFP Module Status1021
- Monitoring Temperature1021
- Using Ping1022
  - Understanding Ping1022
- Using Layer 2 Traceroute1025
- Using IP Traceroute1026
  - Understanding IP Traceroute1027
  - Executing IP Traceroute1027
- Using TDR1028
  - Understanding TDR1028
  - Running TDR and Displaying the Results1029
- Using Debug Commands1029
- Using the Show Platform Forward Command1031
- Using the Crashinfo File1033
Supported Mibs1035
- Mib List1035
Appendix A Supported MIB1036
- MIB List1036
- Using Ftp to Access the Mib Files1037
- Using FTP to Access the MIB Files1038
APPENDIX B Working with the Cisco IOS File System, Configuration Files, and Software Images1039
- Working with the Flash File System1039
- Working with Configuration Files1046
- Working with Software Images1061
APPENDIX C Unsupported Commands in Cisco IOS Release 12.2(50)SE1075
- Access Control Lists1075
- ARP Commands1075
- Boot Loader Commands1076
  - Unsupported User EXEC Command1076
  - Unsupported Global Configuration Command1076
- Debug Commands1076
- Embedded Event Manager1076
- Hsrp1077
- IGMP Snooping Commands1078
  - Unsupported Global Configuration Commands1078
- Interface Commands1079
- IP Multicast Routing1079
  - Unsupported Global Configuration Commands1080
  - Unsupported Interface Configuration Commands1080
- IP Unicast Routing1080
- Miscellaneous1083
- Msdp1084
  - Unsupported Privileged EXEC Commands1084
- Netflow1085
- Snmp1086

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