Configuration Guide
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... for System-Wide Configuration on Switch Stacks 5-15 Switch Stack Management Connectivity 5-16 Connectivity to the Switch Stack Through an IP Address 5-16 Connectivity to the Switch Stack Through an SSH Session 5-16 Connectivity to the Switch Stack Through Console Ports 5-16 Connectivity to Specific Stack Members 5-17 Switch Stack Configuration Scenarios 5-17 Catalyst 3750 Switch Software Configuration Guide...
... for System-Wide Configuration on Switch Stacks 5-15 Switch Stack Management Connectivity 5-16 Connectivity to the Switch Stack Through an IP Address 5-16 Connectivity to the Switch Stack Through an SSH Session 5-16 Connectivity to the Switch Stack Through Console Ports 5-16 Connectivity to Specific Stack Members 5-17 Switch Stack Configuration Scenarios 5-17 Catalyst 3750 Switch Software Configuration Guide...
Configuration Guide
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... Through Non-CDP-Capable and Noncluster-Capable Devices 6-6 Discovery Through Different VLANs 6-7 Discovery Through Different Management VLANs 6-7 Discovery Through Routed Ports 6-8 Discovery of Newly Installed Switches 6-9 HSRP and Standby Cluster Command Switches 6-10 Virtual IP Addresses 6-11 Other Considerations for Cluster ...13 Passwords 6-14 SNMP Community Strings 6-14 Switch Clusters and Switch Stacks 6-15 TACACS+ and RADIUS 6-16 LRE Profiles 6-16 Using the CLI to Manage Switch Clusters 6-16 Catalyst 1900 and Catalyst 2820 CLI Considerations 6-17 Using SNMP to Manage Switch Clusters 6-17...
... Through Non-CDP-Capable and Noncluster-Capable Devices 6-6 Discovery Through Different VLANs 6-7 Discovery Through Different Management VLANs 6-7 Discovery Through Routed Ports 6-8 Discovery of Newly Installed Switches 6-9 HSRP and Standby Cluster Command Switches 6-10 Virtual IP Addresses 6-11 Other Considerations for Cluster ...13 Passwords 6-14 SNMP Community Strings 6-14 Switch Clusters and Switch Stacks 6-15 TACACS+ and RADIUS 6-16 LRE Profiles 6-16 Using the CLI to Manage Switch Clusters 6-16 Catalyst 1900 and Catalyst 2820 CLI Considerations 6-17 Using SNMP to Manage Switch Clusters 6-17...
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... Roles 10-2 Authentication Process 10-3 Authentication Initiation and Message Exchange 10-5 Ports in Authorized and Unauthorized States 10-7 IEEE 802.1x Authentication and Switch Stacks 10-8 IEEE 802.1x Host Mode 10-8 IEEE 802.1x Accounting 10... Ports 10-16 Using IEEE 802.1x Authentication with Port Security 10-17 Using IEEE 802.1x Authentication with Wake-on-LAN 10-18 Using IEEE 802.1x Authentication with MAC Authentication Bypass 10-18 Using Network Admission Control... Inaccessible Authentication Bypass 10-24 MAC Authentication Bypass 10-25 Catalyst 3750 Switch Software Configuration Guide xi
... Roles 10-2 Authentication Process 10-3 Authentication Initiation and Message Exchange 10-5 Ports in Authorized and Unauthorized States 10-7 IEEE 802.1x Authentication and Switch Stacks 10-8 IEEE 802.1x Host Mode 10-8 IEEE 802.1x Accounting 10... Ports 10-16 Using IEEE 802.1x Authentication with Port Security 10-17 Using IEEE 802.1x Authentication with Wake-on-LAN 10-18 Using IEEE 802.1x Authentication with MAC Authentication Bypass 10-18 Using Network Admission Control... Inaccessible Authentication Bypass 10-24 MAC Authentication Bypass 10-25 Catalyst 3750 Switch Software Configuration Guide xi
Configuration Guide
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...the Reconfirmation Interval 13-31 Changing the Retry Count 13-32 Monitoring the VMPS 13-32 Troubleshooting Dynamic-Access Port VLAN Membership 13-33 VMPS Configuration Example 13-33 Configuring VTP 14-1 Understanding VTP 14-1 The VTP ...Domain 14-2 VTP Modes 14-3 VTP Advertisements 14-3 VTP Version 2 14-4 VTP Pruning 14-4 VTP and Switch Stacks 14-6 Configuring VTP 14-6 Default VTP Configuration 14-7 VTP Configuration Options 14-7 VTP Configuration in Global Configuration Mode 14... a VTP Domain 14-14 Monitoring VTP 14-16 Contents OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xv
...the Reconfirmation Interval 13-31 Changing the Retry Count 13-32 Monitoring the VMPS 13-32 Troubleshooting Dynamic-Access Port VLAN Membership 13-33 VMPS Configuration Example 13-33 Configuring VTP 14-1 Understanding VTP 14-1 The VTP ...Domain 14-2 VTP Modes 14-3 VTP Advertisements 14-3 VTP Version 2 14-4 VTP Pruning 14-4 VTP and Switch Stacks 14-6 Configuring VTP 14-6 Default VTP Configuration 14-7 VTP Configuration Options 14-7 VTP Configuration in Global Configuration Mode 14... a VTP Domain 14-14 Monitoring VTP 14-16 Contents OL-8550-02 Catalyst 3750 Switch Software Configuration Guide xv
Configuration Guide
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... VLAN Configuration 15-3 Voice VLAN Configuration Guidelines 15-3 Configuring a Port Connected to a Cisco 7960 IP Phone 15-4 Configuring Cisco IP Phone Voice Traffic 15-5 Configuring the Priority of Incoming Data..., and Multicast Traffic 16-5 Private VLANs and SVIs 16-5 Private VLANs and Switch Stacks 16-6 Configuring Private VLANs 16-6 Tasks for Configuring Private VLANs 16-6 Default Private-VLAN...Host Port 16-12 Configuring a Layer 2 Interface as a Private-VLAN Promiscuous Port 16-13 Mapping Secondary VLANs to a Primary VLAN Layer 3 VLAN Interface 16-14 Monitoring Private VLANs 16-15 Catalyst ...
... VLAN Configuration 15-3 Voice VLAN Configuration Guidelines 15-3 Configuring a Port Connected to a Cisco 7960 IP Phone 15-4 Configuring Cisco IP Phone Voice Traffic 15-5 Configuring the Priority of Incoming Data..., and Multicast Traffic 16-5 Private VLANs and SVIs 16-5 Private VLANs and Switch Stacks 16-6 Configuring Private VLANs 16-6 Tasks for Configuring Private VLANs 16-6 Default Private-VLAN...Host Port 16-12 Configuring a Layer 2 Interface as a Private-VLAN Promiscuous Port 16-13 Mapping Secondary VLANs to a Primary VLAN Layer 3 VLAN Interface 16-14 Monitoring Private VLANs 16-15 Catalyst ...
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...-7 Interoperation Between Legacy and Standard Switches 19-7 Detecting Unidirectional Link Failure 19-8 MSTP and Switch Stacks 19-8 Interoperability with IEEE 802.1D STP 19-9 Understanding RSTP 19-9 Port Roles and the Active Topology 19-9 Rapid Convergence 19-10 Synchronization of Port Roles 19-11 xviii Catalyst 3750 Switch Software Configuration Guide OL-8550-02
...-7 Interoperation Between Legacy and Standard Switches 19-7 Detecting Unidirectional Link Failure 19-8 MSTP and Switch Stacks 19-8 Interoperability with IEEE 802.1D STP 19-9 Understanding RSTP 19-9 Port Roles and the Active Topology 19-9 Rapid Convergence 19-10 Synchronization of Port Roles 19-11 xviii Catalyst 3750 Switch Software Configuration Guide OL-8550-02
Configuration Guide
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... Status 19-26 Configuring Optional Spanning-Tree Features 20-1 Understanding Optional Spanning-Tree Features 20-1 Understanding Port Fast 20-2 Understanding BPDU Guard 20-2 Understanding BPDU Filtering 20-3 Understanding UplinkFast 20-3 Understanding Cross-Stack UplinkFast 20-5 How CSUF Works 20-6 Events that Cause Fast Convergence 20-7 Understanding BackboneFast 20-7 ... Optional Spanning-Tree Features 20-11 Default Optional Spanning-Tree Configuration 20-12 Optional Spanning-Tree Configuration Guidelines 20-12 Enabling Port Fast 20-12 Catalyst 3750 Switch Software Configuration Guide xix
... Status 19-26 Configuring Optional Spanning-Tree Features 20-1 Understanding Optional Spanning-Tree Features 20-1 Understanding Port Fast 20-2 Understanding BPDU Guard 20-2 Understanding BPDU Filtering 20-3 Understanding UplinkFast 20-3 Understanding Cross-Stack UplinkFast 20-5 How CSUF Works 20-6 Events that Cause Fast Convergence 20-7 Understanding BackboneFast 20-7 ... Optional Spanning-Tree Features 20-11 Default Optional Spanning-Tree Configuration 20-12 Optional Spanning-Tree Configuration Guidelines 20-12 Enabling Port Fast 20-12 Catalyst 3750 Switch Software Configuration Guide xix
Configuration Guide
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...25-8 Secure MAC Addresses 25-8 Security Violations 25-9 Default Port Security Configuration 25-10 Port Security Configuration Guidelines 25-10 Enabling and Configuring Port Security 25-12 Enabling and Configuring Port Security Aging 25-15 Port Security and Switch Stacks 25-17 Displaying Port-Based Traffic Control Settings 25-17 Configuring CDP 26-1 Understanding CDP 26-1 ...Configuration Guidelines 27-4 Enabling UDLD Globally 27-5 Enabling UDLD on an Interface 27-6 Resetting an Interface Disabled by UDLD 27-6 Displaying UDLD Status 27-7 Catalyst 3750 Switch Software Configuration Guide xxiii
...25-8 Secure MAC Addresses 25-8 Security Violations 25-9 Default Port Security Configuration 25-10 Port Security Configuration Guidelines 25-10 Enabling and Configuring Port Security 25-12 Enabling and Configuring Port Security Aging 25-15 Port Security and Switch Stacks 25-17 Displaying Port-Based Traffic Control Settings 25-17 Configuring CDP 26-1 Understanding CDP 26-1 ...Configuration Guidelines 27-4 Enabling UDLD Globally 27-5 Enabling UDLD on an Interface 27-6 Resetting an Interface Disabled by UDLD 27-6 Displaying UDLD Status 27-7 Catalyst 3750 Switch Software Configuration Guide xxiii
Configuration Guide
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... RSPAN Concepts and Terminology 28-4 SPAN Sessions 28-4 Monitored Traffic 28-5 Source Ports 28-6 Source VLANs 28-7 VLAN Filtering 28-7 Destination Port 28-8 RSPAN VLAN 28-9 SPAN and RSPAN Interaction with Other Features 28-9 SPAN and RSPAN and Switch Stacks 28-10 Configuring SPAN and RSPAN 28-10 Default SPAN and RSPAN Configuration... Alarms and Events 29-3 Collecting Group History Statistics on an Interface 29-5 Collecting Group Ethernet Statistics on an Interface 29-5 Displaying RMON Status 29-6 xxiv Catalyst 3750 Switch Software Configuration Guide OL-8550-02
... RSPAN Concepts and Terminology 28-4 SPAN Sessions 28-4 Monitored Traffic 28-5 Source Ports 28-6 Source VLANs 28-7 VLAN Filtering 28-7 Destination Port 28-8 RSPAN VLAN 28-9 SPAN and RSPAN Interaction with Other Features 28-9 SPAN and RSPAN and Switch Stacks 28-10 Configuring SPAN and RSPAN 28-10 Default SPAN and RSPAN Configuration... Alarms and Events 29-3 Collecting Group History Statistics on an Interface 29-5 Collecting Group Ethernet Statistics on an Interface 29-5 Displaying RMON Status 29-6 xxiv Catalyst 3750 Switch Software Configuration Guide OL-8550-02
Configuration Guide
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Contents 32 C H A P T E R Configuring Network Security with ACLs 32-1 Understanding ACLs 32-1 Supported ACLs 32-2 Port ACLs 32-3 Router ACLs 32-4 VLAN Maps 32-5 Handling Fragmented and Unfragmented Traffic 32-5 ACLs and Switch Stacks 32-6 Configuring IPv4 ACLs 32-7 Creating Standard and Extended IPv4 ACLs 32-7 Access List Numbers 32-8 ACL Logging 32-9 Creating... 32-34 Using VLAN Maps in Your Network 32-34 Wiring Closet Configuration 32-34 Denying Access to a Server on Another VLAN 32-35 xxvi Catalyst 3750 Switch Software Configuration Guide OL-8550-02
Contents 32 C H A P T E R Configuring Network Security with ACLs 32-1 Understanding ACLs 32-1 Supported ACLs 32-2 Port ACLs 32-3 Router ACLs 32-4 VLAN Maps 32-5 Handling Fragmented and Unfragmented Traffic 32-5 ACLs and Switch Stacks 32-6 Configuring IPv4 ACLs 32-7 Creating Standard and Extended IPv4 ACLs 32-7 Access List Numbers 32-8 ACL Logging 32-9 Creating... 32-34 Using VLAN Maps in Your Network 32-34 Wiring Closet Configuration 32-34 Denying Access to a Server on Another VLAN 32-35 xxvi Catalyst 3750 Switch Software Configuration Guide OL-8550-02
Configuration Guide
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... 11 20:31:19.247:%STACKMGR-6-STACK_LINK_CHANGE:Stack Port 2 Switch 2 has changed to state UP *Mar 11 20:31:23.232:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to the stack (VERSION_MISMATCH) *Mar 11 20:31:23....122-25.SEB.bin (4945851 bytes) 5-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 If an appropriate image is not found in the stack flash file systems, the auto-advise process tells... image name (tar filename) needed to an IP services image. Beginning with Cisco IOS Release 12.2(35)SE, you have both StackWise cables connected during the reload, network downtime...
... 11 20:31:19.247:%STACKMGR-6-STACK_LINK_CHANGE:Stack Port 2 Switch 2 has changed to state UP *Mar 11 20:31:23.232:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to the stack (VERSION_MISMATCH) *Mar 11 20:31:23....122-25.SEB.bin (4945851 bytes) 5-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 If an appropriate image is not found in the stack flash file systems, the auto-advise process tells... image name (tar filename) needed to an IP services image. Beginning with Cisco IOS Release 12.2(35)SE, you have both StackWise cables connected during the reload, network downtime...
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... switch in VM mode to the stack (VERSION_MISMATCH) stack_2# Catalyst 3750 Switch Software Configuration Guide 5-13 Auto-copy launches but cannot find software in the switch stack to copy to the switch in VM mode: *Mar 1 00:01:11.319:%STACKMGR-6-STACK_LINK_CHANGE:Stack Port 2 Switch 2 has changed to state... UP *Mar 1 00:01:15.547:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to make it compatible with the switch stack. The auto-advise process launches and recommends that is running ...
... switch in VM mode to the stack (VERSION_MISMATCH) stack_2# Catalyst 3750 Switch Software Configuration Guide 5-13 Auto-copy launches but cannot find software in the switch stack to copy to the switch in VM mode: *Mar 1 00:01:11.319:%STACKMGR-6-STACK_LINK_CHANGE:Stack Port 2 Switch 2 has changed to state... UP *Mar 1 00:01:15.547:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to make it compatible with the switch stack. The auto-advise process launches and recommends that is running ...
Configuration Guide
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...-number show switch detail show switch neighbors show switch stack-ports show and debug commands are available in a CLI session to 9. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 5-25 Chapter 5 Managing Switch Stacks Accessing the CLI of a Specific Stack Member Accessing the CLI of a Specific Stack Member Note This task is appended to the...
...-number show switch detail show switch neighbors show switch stack-ports show and debug commands are available in a CLI session to 9. OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 5-25 Chapter 5 Managing Switch Stacks Accessing the CLI of a Specific Stack Member Accessing the CLI of a Specific Stack Member Note This task is appended to the...
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...switch fails. Table 6-1 Switch Software and Cluster Capability Switch Catalyst 3750 Catalyst 3560 Catalyst 3550 Catalyst 2970 Catalyst 2960 Catalyst 2955 Catalyst 2950 Catalyst 2950 LRE Catalyst 2940 Catalyst 3500 XL Catalyst 2900 XL (8-MB switches) Cisco IOS Release 12.1(11)AX or later 12.1(19)EA1b or... switch Member or command switch Member or command switch Catalyst 3750 Switch Software Configuration Guide 6-2 OL-8550-02 A cluster standby group is a set of their interconnection media and their stack ports. Understanding Switch Clusters Chapter 6 Clustering Switches In a...
...switch fails. Table 6-1 Switch Software and Cluster Capability Switch Catalyst 3750 Catalyst 3560 Catalyst 3550 Catalyst 2970 Catalyst 2960 Catalyst 2955 Catalyst 2950 Catalyst 2950 LRE Catalyst 2940 Catalyst 3500 XL Catalyst 2900 XL (8-MB switches) Cisco IOS Release 12.1(11)AX or later 12.1(19)EA1b or... switch Member or command switch Member or command switch Catalyst 3750 Switch Software Configuration Guide 6-2 OL-8550-02 A cluster standby group is a set of their interconnection media and their stack ports. Understanding Switch Clusters Chapter 6 Clustering Switches In a...
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... configuration procedures for this release and the online Cisco IOS Interface Command Reference, Release 12.2. 11 C H A P T E R Configuring Interface Characteristics This chapter defines the types of interfaces on the rear of the switch are not Ethernet ports and cannot be configured. Note The stack ports on the Catalyst 3750 switch and describes how to configure them...
... configuration procedures for this release and the online Cisco IOS Interface Command Reference, Release 12.2. 11 C H A P T E R Configuring Interface Characteristics This chapter defines the types of interfaces on the rear of the switch are not Ethernet ports and cannot be configured. Note The stack ports on the Catalyst 3750 switch and describes how to configure them...
Configuration Guide
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... a Secondary Root Switch, page 18-18 (optional) • Configuring Port Priority, page 18-18 (optional) • Configuring Path Cost, page 18-20 (optional) 18-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 The bridge ID is powered...stack root. • When a stack member leaves the stack, spanning-tree reconvergence occurs within the stack (and possibly outside the stack). The remaining stack member with the lowest stack port ID becomes the stack root. • If the stack master fails or leaves the stack, the stack members elect a new stack master, and all stack...
... a Secondary Root Switch, page 18-18 (optional) • Configuring Port Priority, page 18-18 (optional) • Configuring Path Cost, page 18-20 (optional) 18-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 The bridge ID is powered...stack root. • When a stack member leaves the stack, spanning-tree reconvergence occurs within the stack (and possibly outside the stack). The remaining stack member with the lowest stack port ID becomes the stack root. • If the stack master fails or leaves the stack, the stack members elect a new stack master, and all stack...
Configuration Guide
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... the MAC address of the sending port. The remaining stack member with the lowest stack port ID becomes the stack root. With this information, switch A can detect that switch B does not react to the superior BPDUs it is included in this Cisco IOS release. As a result, ...for the LAN connected to the stack. For more information about switch stacks, see Chapter 5, "Managing Switch Stacks." 19-8 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 A topology change occurs if the newly added switch contains a better root port for the switch stack or a better designated port for ...
... the MAC address of the sending port. The remaining stack member with the lowest stack port ID becomes the stack root. With this information, switch A can detect that switch B does not react to the superior BPDUs it is included in this Cisco IOS release. As a result, ...for the LAN connected to the stack. For more information about switch stacks, see Chapter 5, "Managing Switch Stacks." 19-8 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 A topology change occurs if the newly added switch contains a better root port for the switch stack or a better designated port for ...
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... 9 has changed to state DOWN 16:43:30: %STACKMGR-4-SWITCH_REMOVED: Switch 1 has been REMOVED from the stack Switch# 16:44:35: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state UP 16:44:37: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to run online diagnostic tests after completion of a syslog message when any health monitoring... are configured for test monitoring on individual switches, you can use this command to run . These sections describe how to state UP OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 44-3
... 9 has changed to state DOWN 16:43:30: %STACKMGR-4-SWITCH_REMOVED: Switch 1 has been REMOVED from the stack Switch# 16:44:35: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state UP 16:44:37: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to run online diagnostic tests after completion of a syslog message when any health monitoring... are configured for test monitoring on individual switches, you can use this command to run . These sections describe how to state UP OL-8550-02 Catalyst 3750 Switch Software Configuration Guide 44-3
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...Online Diagnostics 16:44:45: %STACKMGR-4-SWITCH_ADDED: Switch 1 has been ADDED to the stack 16:45:00: %STACKMGR-5-SWITCH_READY: Switch 1 is READY 16:45:00: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP 16:45:00: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP 00:00:20: %STACKMGR-4-SWITCH_ADDED: ...29: %STACKMGR-5-MASTER_READY: Master Switch 2 is READY (Switch-1) 00:00:30: %STACKMGR-5-SWITCH_READY: Switch 1 is running a test. Fixed monitoring interval test / NA 44-4 Catalyst 3750 Switch Software Configuration Guide OL-8550-02
...Online Diagnostics 16:44:45: %STACKMGR-4-SWITCH_ADDED: Switch 1 has been ADDED to the stack 16:45:00: %STACKMGR-5-SWITCH_READY: Switch 1 is READY 16:45:00: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP 16:45:00: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP 00:00:20: %STACKMGR-4-SWITCH_ADDED: ...29: %STACKMGR-5-MASTER_READY: Master Switch 2 is READY (Switch-1) 00:00:30: %STACKMGR-5-SWITCH_READY: Switch 1 is running a test. Fixed monitoring interval test / NA 44-4 Catalyst 3750 Switch Software Configuration Guide OL-8550-02
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D-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 VLAN Appendix D Unsupported Commands in Cisco IOS Release 12.2(35)SE Unsupported Interface Configuration Command spanning-tree stack-port VLAN Unsupported Global Configuration Commands vlan internal allocation policy {ascending | descending} Unsupported User EXEC Commands show running-config vlan show vlan ifindex VTP Unsupported Privileged EXEC Commands vtp {password password | pruning | version number} Note This command has been replaced by the vtp global configuration command.
D-12 Catalyst 3750 Switch Software Configuration Guide OL-8550-02 VLAN Appendix D Unsupported Commands in Cisco IOS Release 12.2(35)SE Unsupported Interface Configuration Command spanning-tree stack-port VLAN Unsupported Global Configuration Commands vlan internal allocation policy {ascending | descending} Unsupported User EXEC Commands show running-config vlan show vlan ifindex VTP Unsupported Privileged EXEC Commands vtp {password password | pruning | version number} Note This command has been replaced by the vtp global configuration command.