Software Configuration Guide
Page 11
...-1 Access Ports 11-2 Trunk Ports 11-2 Port-Based VLANs 11-3 EtherChannel Port Groups 11-3 Connecting Interfaces 11-4 Using the Interface Command 11-4 Procedures for Configuring Interfaces 11-5 Configuring a Range of Interfaces 11-5 Configuring and Using Interface-Range Macros 11-7 Configuring Ethernet Interfaces 11-8 Default Ethernet Interface Configuration 11-9 Configuring Interface Speed and Duplex... 11-15 Clearing and Resetting Interfaces and Counters 11-16 Shutting Down and Restarting the Interface 11-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xi
...-1 Access Ports 11-2 Trunk Ports 11-2 Port-Based VLANs 11-3 EtherChannel Port Groups 11-3 Connecting Interfaces 11-4 Using the Interface Command 11-4 Procedures for Configuring Interfaces 11-5 Configuring a Range of Interfaces 11-5 Configuring and Using Interface-Range Macros 11-7 Configuring Ethernet Interfaces 11-8 Default Ethernet Interface Configuration 11-9 Configuring Interface Speed and Duplex... 11-15 Clearing and Resetting Interfaces and Counters 11-16 Shutting Down and Restarting the Interface 11-17 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xi
Software Configuration Guide
Page 13
... Trunks 14-10 Configuring Spanning-Tree Features 14-11 Default Spanning-Tree Configuration 14-11 Spanning-Tree Configuration Guidelines 14-12 Changing the Spanning-Tree Mode 14-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring the Port Priority 14-17 Configuring the Path Cost 14-19 Catalyst 2950 and Catalyst 2955 Switch Software Configuration...
... Trunks 14-10 Configuring Spanning-Tree Features 14-11 Default Spanning-Tree Configuration 14-11 Spanning-Tree Configuration Guidelines 14-12 Changing the Spanning-Tree Mode 14-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring the Port Priority 14-17 Configuring the Path Cost 14-19 Catalyst 2950 and Catalyst 2955 Switch Software Configuration...
Software Configuration Guide
Page 16
... VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15 802.1Q Configuration Considerations 17-16 Default Layer 2 Ethernet Interface VLAN Configuration 17-17 Configuring an Ethernet Interface as a Trunk Port 17-17 Interaction with Other Features 17-18 Configuring a Trunk Port 17-18 ... Path Cost 17-24 Configuring VMPS 17-25 Understanding VMPS 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-11380...
... VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15 802.1Q Configuration Considerations 17-16 Default Layer 2 Ethernet Interface VLAN Configuration 17-17 Configuring an Ethernet Interface as a Trunk Port 17-17 Interaction with Other Features 17-18 Configuring a Trunk Port 17-18 ... Path Cost 17-24 Configuring VMPS 17-25 Understanding VMPS 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-11380...
Software Configuration Guide
Page 39
...tree loops or storms by allowing VLAN 1 to be used • Voice VLAN for creating subnets for voice traffic from Cisco IP Phones • VLAN 1 minimization to reduce the risk of the spanning tree by immediately transitioning root and designated ...reducing network traffic by restricting flooded traffic to links destined for stations receiving the traffic • Dynamic Trunking Protocol (DTP) for negotiating trunking on a port Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-5 Security • Bridge protocol data unit (BPDU) guard for shutting down Port Fast-enabled...
...tree loops or storms by allowing VLAN 1 to be used • Voice VLAN for creating subnets for voice traffic from Cisco IP Phones • VLAN 1 minimization to reduce the risk of the spanning tree by immediately transitioning root and designated ...reducing network traffic by restricting flooded traffic to links destined for stations receiving the traffic • Dynamic Trunking Protocol (DTP) for negotiating trunking on a port Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-5 Security • Bridge protocol data unit (BPDU) guard for shutting down Port Fast-enabled...
Software Configuration Guide
Page 45
...-stack UplinkFast on 802.1p or 802.1Q. Figure 1-1 shows configuration examples of the switches, you can serve as a switch cluster to 328,084 feet (100 kilometers) 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-11 You can create backup paths by using the Catalyst switches to create these Gigabit Ethernet modules also provides flexibility in...
...-stack UplinkFast on 802.1p or 802.1Q. Figure 1-1 shows configuration examples of the switches, you can serve as a switch cluster to 328,084 feet (100 kilometers) 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-11 You can create backup paths by using the Catalyst switches to create these Gigabit Ethernet modules also provides flexibility in...
Software Configuration Guide
Page 53
...-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-19 Cisco CallManager controls call -processing server running Cisco CallManager software. For example, you can use switch clusters that have a mix of more than 1000 users. Because it can aggregate up to 130 Gigabit connections, a Catalyst 6500 multilayer switch is used as Cisco Access Digital Trunk Gateway or Cisco Access Analog Trunk Gateway...
...-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-19 Cisco CallManager controls call -processing server running Cisco CallManager software. For example, you can use switch clusters that have a mix of more than 1000 users. Because it can aggregate up to 130 Gigabit connections, a Catalyst 6500 multilayer switch is used as Cisco Access Digital Trunk Gateway or Cisco Access Analog Trunk Gateway...
Software Configuration Guide
Page 55
... or CGMP enabled for other subscribers. Chapter 1 Overview Network Configuration Examples All ports on the residential Catalyst 2950 and 2955 switches (and Catalyst LRE switches if they are included) are configured as those described in a MAN Configuration Cisco 12000 Gigabit switch routers Catalyst 6500 switches Si Service Provider POP Si Catalyst 3550 Si multilayer switches Si Si Mini-POP Si Gigabit MAN Si Si...
... or CGMP enabled for other subscribers. Chapter 1 Overview Network Configuration Examples All ports on the residential Catalyst 2950 and 2955 switches (and Catalyst LRE switches if they are included) are configured as those described in a MAN Configuration Cisco 12000 Gigabit switch routers Catalyst 6500 switches Si Service Provider POP Si Catalyst 3550 Si multilayer switches Si Si Mini-POP Si Gigabit MAN Si Si...
Software Configuration Guide
Page 134
... Command switch Standby command switch VLAN 9 VLAN 9 VLAN 9 VLAN 9 Switch 3 (management VLAN 9) VLAN 9 Switch 5 (management VLAN 9) VLAN trunk 4, 9 Switch 6 (management VLAN 9) VLAN 9 Switch 4 (management VLAN 9) Switch 7 (management VLAN 4) VLAN 9 Switch 9 (management VLAN 9) Switch 8 (management VLAN 9) VLAN 4 Switch 10 (management VLAN 4) 111415 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-8 78-11380-10 The default management VLAN is a Catalyst 2900 XL switch, a Catalyst 3500 XL switch, or a non-LRE Catalyst 2950 switch running Cisco...
... Command switch Standby command switch VLAN 9 VLAN 9 VLAN 9 VLAN 9 Switch 3 (management VLAN 9) VLAN 9 Switch 5 (management VLAN 9) VLAN trunk 4, 9 Switch 6 (management VLAN 9) VLAN 9 Switch 4 (management VLAN 9) Switch 7 (management VLAN 4) VLAN 9 Switch 9 (management VLAN 9) Switch 8 (management VLAN 9) VLAN 4 Switch 10 (management VLAN 4) 111415 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-8 78-11380-10 The default management VLAN is a Catalyst 2900 XL switch, a Catalyst 3500 XL switch, or a non-LRE Catalyst 2950 switch running Cisco...
Software Configuration Guide
Page 135
... 16) Switch 7 (management VLAN 4) VLAN 62 Switch 9 (management VLAN 62) Switch 8 (management VLAN 9) VLAN 4 Switch 10 (management VLAN 4) 101323 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-9 All other member switches must be connected to the command switch through Different Management VLANs We recommend using as a command switch a Catalyst 3550 switch, a Catalyst 2955 switch, a Catalyst 2950 LRE switch, a non-LRE Catalyst 2950 switch running a release earlier than Cisco IOS...
... 16) Switch 7 (management VLAN 4) VLAN 62 Switch 9 (management VLAN 62) Switch 8 (management VLAN 9) VLAN 4 Switch 10 (management VLAN 4) 101323 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-9 All other member switches must be connected to the command switch through Different Management VLANs We recommend using as a command switch a Catalyst 3550 switch, a Catalyst 2955 switch, a Catalyst 2950 LRE switch, a non-LRE Catalyst 2950 switch running a release earlier than Cisco IOS...
Software Configuration Guide
Page 143
...long as each member switch has either a trunk connection or a connection to a cluster and the cluster is using . From the command switch, use different private profiles. LRE Profiles In Cisco IOS Release 12.1(14)EA1 or later, the Catalyst 2950 LRE switches do not have a...switch to candidate and member switches in the cluster. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-17 However, changing the management VLAN ends your CMS session by other than Cisco IOS Release 12.1(14)EA1, a configuration conflict occurs if a switch cluster has LRE switches...
...long as each member switch has either a trunk connection or a connection to a cluster and the cluster is using . From the command switch, use different private profiles. LRE Profiles In Cisco IOS Release 12.1(14)EA1 or later, the Catalyst 2950 LRE switches do not have a...switch to candidate and member switches in the cluster. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-17 However, changing the management VLAN ends your CMS session by other than Cisco IOS Release 12.1(14)EA1, a configuration conflict occurs if a switch cluster has LRE switches...
Software Configuration Guide
Page 215
... only if you download the cryptographic software image, your switch. Beginning in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-35 Return to run SSH: 1. Follow this procedure only if you are prompted to use. This procedure is required. If the switch has 2 trunk ports, it takes longer to generate and to...
... only if you download the cryptographic software image, your switch. Beginning in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-35 Return to run SSH: 1. Follow this procedure only if you are prompted to use. This procedure is required. If the switch has 2 trunk ports, it takes longer to generate and to...
Software Configuration Guide
Page 226
...effect. • The 802.1x with VLAN assignment feature is not supported on trunk ports, dynamic ports, or with Guest VLAN For switches running the EI, you configure 802.1x on page 9-29. You can configure a guest VLAN for example, how to download the 802.1x client). Any ... as Windows 98 systems, might not be 802.1x-capable. For examples of hosts are supported on page 10-18. 10-8 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 Using 802.1x with dynamic-access port assignment through a VLAN Membership Policy Server (VMPS). The guest VLAN ...
...effect. • The 802.1x with VLAN assignment feature is not supported on trunk ports, dynamic ports, or with Guest VLAN For switches running the EI, you configure 802.1x on page 9-29. You can configure a guest VLAN for example, how to download the 802.1x client). Any ... as Windows 98 systems, might not be 802.1x-capable. For examples of hosts are supported on page 10-18. 10-8 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 Using 802.1x with dynamic-access port assignment through a VLAN Membership Policy Server (VMPS). The guest VLAN ...
Software Configuration Guide
Page 377
... frames improperly, which is a Point-to negotiate trunking with the neighboring interface. Trunk negotiation is managed by 802.1Q trunks. The switch supports 802.1Q, the industry-standard trunking encapsulation. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-15 Ethernet trunk interfaces support different trunking modes (see Chapter 31, "Configuring EtherChannels." For more Ethernet switch interfaces and another networking device such as...
... frames improperly, which is a Point-to negotiate trunking with the neighboring interface. Trunk negotiation is managed by 802.1Q trunks. The switch supports 802.1Q, the industry-standard trunking encapsulation. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-15 Ethernet trunk interfaces support different trunking modes (see Chapter 31, "Configuring EtherChannels." For more Ethernet switch interfaces and another networking device such as...
Software Configuration Guide
Page 380
...; A port in dynamic mode can negotiate with other features in these ways: • A trunk port cannot be a secure port. • Trunk ports can be configured for trunking. If you change the mode of the display. 17-18 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 allowed-VLAN list - If you try to change the mode...
...; A port in dynamic mode can negotiate with other features in these ways: • A trunk port cannot be a secure port. • Trunk ports can be configured for trunking. If you change the mode of the display. 17-18 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 allowed-VLAN list - If you try to change the mode...
Software Configuration Guide
Page 381
... remove VLAN 1 from the allowed list. This is in the configuration file. When VTP detects a newly enabled VLAN and the VLAN is known as a VLAN trunk port. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-19 To reset all Cisco switch trunk ports) on each trunk. The example assumes that has been disabled on VLAN 1. However...
... remove VLAN 1 from the allowed list. This is in the configuration file. When VTP detects a newly enabled VLAN and the VLAN is known as a VLAN trunk port. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-19 To reset all Cisco switch trunk ports) on each trunk. The example assumes that has been disabled on VLAN 1. However...
Software Configuration Guide
Page 383
... steps to privileged EXEC mode. Return to configure the native VLAN on the trunk port. Verify your entries in the Trunking Native Mode VLAN field. (Optional) Save your entries in the native VLAN configured for Untagged Traffic A trunk port configured with a tag. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-21 For information about 802.1Q...
... steps to privileged EXEC mode. Return to configure the native VLAN on the trunk port. Verify your entries in the Trunking Native Mode VLAN field. (Optional) Save your entries in the native VLAN configured for Untagged Traffic A trunk port configured with a tag. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-21 For information about 802.1Q...
Software Configuration Guide
Page 385
... to set the STP port priority. Chapter 17 Configuring VLANs Configuring VLAN Trunks Beginning in privileged EXEC mode, follow these steps to configure the network shown in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-23 Return to Switch B. Verify the VLAN configuration. When the trunk links come up, VTP passes the VTP and VLAN...
... to set the STP port priority. Chapter 17 Configuring VLANs Configuring VLAN Trunks Beginning in privileged EXEC mode, follow these steps to configure the network shown in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-23 Return to Switch B. Verify the VLAN configuration. When the trunk links come up, VTP passes the VTP and VLAN...
Software Configuration Guide
Page 386
... running-config Step 8 show vlan Step 9 configure terminal Step 10 interface fastethernet 0/1 Purpose Enter global configuration mode on Switch A. Return to set the STP cost. 17-24 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 When the trunk links come up, Switch A receives the VTP information from the other switches. Verify that interfaces Fast Ethernet 0/1 and Fast...
... running-config Step 8 show vlan Step 9 configure terminal Step 10 interface fastethernet 0/1 Purpose Enter global configuration mode on Switch A. Return to set the STP cost. 17-24 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 When the trunk links come up, Switch A receives the VTP information from the other switches. Verify that interfaces Fast Ethernet 0/1 and Fast...
Software Configuration Guide
Page 400
... disabled. Disabled. 18-6 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 You can set VLAN pruning-eligibility, whether or not VTP pruning is enabled for configuring VTP. None. Configuring VTP Chapter 18 Configuring VTP VTP pruning is currently trunking. To configure VTP pruning on an interface, use the switchport trunk pruning vlan interface configuration command (see the "Changing...
... disabled. Disabled. 18-6 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 You can set VLAN pruning-eligibility, whether or not VTP pruning is enabled for configuring VTP. None. Configuring VTP Chapter 18 Configuring VTP VTP pruning is currently trunking. To configure VTP pruning on an interface, use the switchport trunk pruning vlan interface configuration command (see the "Changing...
Software Configuration Guide
Page 581
.... 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 30-21 Specify the interface to trust the classification of the traffic that it receives: Step 1 Step 2 Command configure terminal interface interface-id Purpose Enter global configuration mode. Chapter 30 Configuring QoS Figure 30-4 Port Trusted States within the QoS Domain Trusted interface Trunk Configuring Standard QoS Traffic...
.... 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 30-21 Specify the interface to trust the classification of the traffic that it receives: Step 1 Step 2 Command configure terminal interface interface-id Purpose Enter global configuration mode. Chapter 30 Configuring QoS Figure 30-4 Port Trusted States within the QoS Domain Trusted interface Trunk Configuring Standard QoS Traffic...