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... VLAN 17-8 Deleting a VLAN 17-10 Assigning Static-Access Ports to a VLAN 17-11 Configuring Extended-Range VLANs 17-12 Default VLAN Configuration 17-12 Extended-Range VLAN Configuration Guidelines 17-12 Creating an Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview... 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 78-11380-10
... VLAN 17-8 Deleting a VLAN 17-10 Assigning Static-Access Ports to a VLAN 17-11 Configuring Extended-Range VLANs 17-12 Default VLAN Configuration 17-12 Extended-Range VLAN Configuration Guidelines 17-12 Creating an Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview... 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 78-11380-10
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... convergence of spanning-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 ...VLAN membership • VLAN Trunking Protocol (VTP) pruning for reducing network traffic by the IEEE 802.1Q standard (available only with appropriate network resources, traffic patterns, and bandwidth Note The Catalyst 2950-12, Catalyst 2950-24, Catalyst 2950SX-24, Catalyst 2950SX-48-SI, and Catalyst 2950T-48-SI switches support only 64 port-based VLANs. • The switch...
... convergence of spanning-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 ...VLAN membership • VLAN Trunking Protocol (VTP) pruning for reducing network traffic by the IEEE 802.1Q standard (available only with appropriate network resources, traffic patterns, and bandwidth Note The Catalyst 2950-12, Catalyst 2950-24, Catalyst 2950SX-24, Catalyst 2950SX-48-SI, and Catalyst 2950T-48-SI switches support only 64 port-based VLANs. • The switch...
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...8226; Use VLAN trunks, cross-stack UplinkFast, and BackboneFast for using Fast Ethernet, Gigabit, Fast EtherChannel, or Gigabit EtherChannel links. Using Gigabit modules on the uplink ports so that support at higher speeds • Use the Catalyst 2900 LRE XL or Catalyst 2950 LRE switches to provide ... on the cross-stack Gigabit uplinks. When you use a stack of Catalyst 2950G-48 switches, you can connect up to 15 Mb of up to nine Catalyst 2900 XL, Catalyst 2950, Catalyst 3500 XL, and Catalyst 3550 switches through a single IP address. • High-performance workgroup-For users ...
...8226; Use VLAN trunks, cross-stack UplinkFast, and BackboneFast for using Fast Ethernet, Gigabit, Fast EtherChannel, or Gigabit EtherChannel links. Using Gigabit modules on the uplink ports so that support at higher speeds • Use the Catalyst 2900 LRE XL or Catalyst 2950 LRE switches to provide ... on the cross-stack Gigabit uplinks. When you use a stack of Catalyst 2950G-48 switches, you can connect up to 15 Mb of up to nine Catalyst 2900 XL, Catalyst 2950, Catalyst 3500 XL, and Catalyst 3550 switches through a single IP address. • High-performance workgroup-For users ...
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...than Cisco IOS Release 12.1(9)EA1 must connect to different management VLANs. The cluster in Figure 7-4 has a command switch that is switch 7 Figure 7-4 Discovery through the Same Management VLAN 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...
...than Cisco IOS Release 12.1(9)EA1 must connect to different management VLANs. The cluster in Figure 7-4 has a command switch that is switch 7 Figure 7-4 Discovery through the Same Management VLAN 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...
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Chapter 7 Clustering Switches Planning a Switch Cluster Discovery through Different Management VLANs Command switch Standby command switch VLAN 9 VLAN 16 Switch 3 (management VLAN 16) VLAN 16 VLAN 62 Switch 5 (management VLAN 62) VLAN trunk 4, 62 VLAN 9 Switch 6 (management VLAN 9) VLAN 9 Switch 4 (management VLAN 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 ...
Chapter 7 Clustering Switches Planning a Switch Cluster Discovery through Different Management VLANs Command switch Standby command switch VLAN 9 VLAN 16 Switch 3 (management VLAN 16) VLAN 16 VLAN 62 Switch 5 (management VLAN 62) VLAN trunk 4, 62 VLAN 9 Switch 6 (management VLAN 9) VLAN 9 Switch 4 (management VLAN 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 ...
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... 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-35 Enable the SSH server for the switch, which limits the number of VLANs, trunk ports, and cluster members that you are examples of switch configurations that a minimum... modulus size of 1024 bits. When you generate RSA keys, you can have up to enter a modulus length. These are prompted to 4 trunk ports. • If your switch is required. Download the cryptographic software image from Cisco...
... 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-35 Enable the SSH server for the switch, which limits the number of VLANs, trunk ports, and cluster members that you are examples of switch configurations that a minimum... modulus size of 1024 bits. When you generate RSA keys, you can have up to enter a modulus length. These are prompted to 4 trunk ports. • If your switch is required. Download the cryptographic software image from Cisco...
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... allowed list for a trunk port, the trunk port automatically becomes a 11-2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 or 802.1Q-tagged packet for another VLAN for the VLAN assigned to a VLAN. • VLAN membership of every VLAN known to the VTP, you can also configure an access port with an attached Cisco IP Phone to use...
... allowed list for a trunk port, the trunk port automatically becomes a 11-2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 or 802.1Q-tagged packet for another VLAN for the VLAN assigned to a VLAN. • VLAN membership of every VLAN known to the VTP, you can also configure an access port with an attached Cisco IP Phone to use...
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...EtherChannels." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-3 Network devices in the allowed list for a trunk port, the port does not become a member of the VLAN, and no traffic for the VLAN is forwarded to 1005...VLANs A VLAN is a switched network that is logically segmented by using the channel-group interface configuration command. Chapter 11 Configuring Interface Characteristics Understanding Interface Types member of that VLAN and traffic is forwarded to the physical location of the users. Extended-range VLANs are the DTP, the Cisco...
...EtherChannels." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-3 Network devices in the allowed list for a trunk port, the port does not become a member of the VLAN, and no traffic for the VLAN is forwarded to 1005...VLANs A VLAN is a switched network that is logically segmented by using the channel-group interface configuration command. Chapter 11 Configuring Interface Characteristics Understanding Interface Types member of that VLAN and traffic is forwarded to the physical location of the users. Extended-range VLANs are the DTP, the Cisco...
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... enable state All ports are enabled. Port Fast Disabled. VLAN trunking Switchport mode dynamic desirable (supports DTP). See the "Default Storm Control Configuration" control section on all Ethernet ports. Media Type (Catalyst 2950 LRE switches only) SFP module preferred. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-9 Port description None defined. EtherChannel (PAgP) and...
... enable state All ports are enabled. Port Fast Disabled. VLAN trunking Switchport mode dynamic desirable (supports DTP). See the "Default Storm Control Configuration" control section on all Ethernet ports. Media Type (Catalyst 2950 LRE switches only) SFP module preferred. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-9 Port description None defined. EtherChannel (PAgP) and...
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... Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 14-9 The most common initial deployment of MSTP is in the network. A spanning-tree reconfiguration on one link is oversubscribed. The PVST+ runs on each VLAN on that each has a loop-free path through the network. This root switch propagates the spanning-tree information associated with the VLAN Trunking...
... Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 14-9 The most common initial deployment of MSTP is in the network. A spanning-tree reconfiguration on one link is oversubscribed. The PVST+ runs on each VLAN on that each has a loop-free path through the network. This root switch propagates the spanning-tree information associated with the VLAN Trunking...
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... ports and trunk ports is treated as a single trunk link between the switches. The standard requires only one spanning-tree instance for a network. The external spanning-tree behavior on 802.1Q trunks, see Chapter 17, "Configuring VLANs." 14-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 If rapid PVST+ is maintained by Cisco switches separated by...
... ports and trunk ports is treated as a single trunk link between the switches. The standard requires only one spanning-tree instance for a network. The external spanning-tree behavior on 802.1Q trunks, see Chapter 17, "Configuring VLANs." 14-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 If rapid PVST+ is maintained by Cisco switches separated by...
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...CSUF on the first interface before enabling it on the switch. (Optional) For max-update-rate pkts-per second. When UplinkFast is disabled, the switch priorities of all VLANs and path costs of all interfaces and VLAN trunks is increased by 3000 (if you change the path ... running-config startup-config Purpose Verify your entries. (Optional) Save your entries in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 16-17 Chapter 16 Configuring Optional Spanning-Tree Features Configuring Optional Spanning-Tree Features Step 4 Step 5 ...
...CSUF on the first interface before enabling it on the switch. (Optional) For max-update-rate pkts-per second. When UplinkFast is disabled, the switch priorities of all VLANs and path costs of all interfaces and VLAN trunks is increased by 3000 (if you change the path ... running-config startup-config Purpose Verify your entries. (Optional) Save your entries in the configuration file. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 16-17 Chapter 16 Configuring Optional Spanning-Tree Features Configuring Optional Spanning-Tree Features Step 4 Step 5 ...
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...Catalyst 2950 or Catalyst 2955 switch. The chapter includes these sections: • Understanding VLANs, page 17-1 • Configuring Normal-Range VLANs, page 17-4 • Configuring Extended-Range VLANs, page 17-12 • Displaying VLANs, page 17-14 • Configuring VLAN Trunks, page 17-15 • Configuring VMPS, page 17-25 Understanding VLANs A VLAN... "Configuring VTP." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-1 Any switch port can support its own implementation of the users. Note Before you create VLANs, you can group end stations even ...
...Catalyst 2950 or Catalyst 2955 switch. The chapter includes these sections: • Understanding VLANs, page 17-1 • Configuring Normal-Range VLANs, page 17-4 • Configuring Extended-Range VLANs, page 17-12 • Displaying VLANs, page 17-14 • Configuring VLAN Trunks, page 17-15 • Configuring VMPS, page 17-25 Understanding VLANs A VLAN... "Configuring VTP." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-1 Any switch port can support its own implementation of the users. Note Before you create VLANs, you can group end stations even ...
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... Configuring VLANs Configuring VLAN Trunks Configuring VLAN Trunks These sections describe how VLAN trunks function on an EtherChannel bundle. Figure 17-2 Switches in the same VTP domain. Ethernet trunk interfaces support different trunking modes (see Chapter 31, "Configuring EtherChannels." For more Ethernet switch interfaces and another networking device such as trunking or nontrunking or to negotiate trunking with the neighboring interface. Catalyst 2950 and Catalyst 2955 Switch...
... Configuring VLANs Configuring VLAN Trunks Configuring VLAN Trunks These sections describe how VLAN trunks function on an EtherChannel bundle. Figure 17-2 Switches in the same VTP domain. Ethernet trunk interfaces support different trunking modes (see Chapter 31, "Configuring EtherChannels." For more Ethernet switch interfaces and another networking device such as trunking or nontrunking or to negotiate trunking with the neighboring interface. Catalyst 2950 and Catalyst 2955 Switch...
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... a network of the non-Cisco 802.1Q switch. Puts the interface into permanent nontrunking mode. However, spanning-tree information for all VLANs. Manually shut down the GigaStack port by GigaStack GBIC links, you must manually configure the neighboring interface as a single trunk link between the switches. 17-16 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380...
... a network of the non-Cisco 802.1Q switch. Puts the interface into permanent nontrunking mode. However, spanning-tree information for all VLANs. Manually shut down the GigaStack port by GigaStack GBIC links, you must manually configure the neighboring interface as a single trunk link between the switches. 17-16 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380...
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...VLAN for Untagged Traffic, page 17-21 Note The default mode for Layer 2 interfaces is loop-free before disabling spanning tree. We recommend that you must ensure that this trunk port is connected to allow trunking, the link is a Layer 2 trunk. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch... Software Configuration Guide 17-17 Otherwise, the switch cannot receive any VTP advertisements.
...VLAN for Untagged Traffic, page 17-21 Note The default mode for Layer 2 interfaces is loop-free before disabling spanning tree. We recommend that you must ensure that this trunk port is connected to allow trunking, the link is a Layer 2 trunk. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch... Software Configuration Guide 17-17 Otherwise, the switch cannot receive any VTP advertisements.
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...trunk native vlan vlan-id Specify the native VLAN. Configuring VLAN Trunks Chapter 17 Configuring VLANs Interaction with Other Features Trunking interacts with other features in these ways: • A trunk port cannot be a secure port. • Trunk ports can negotiate with its neighbor to become a trunk... stops trunking. STP port priority for trunking. trunk status (If one of the display. 17-18 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 switchport mode {dynamic {auto | desirable} | trunk} Configure the interface as an 802.1Q trunk port:...
...trunk native vlan vlan-id Specify the native VLAN. Configuring VLAN Trunks Chapter 17 Configuring VLANs Interaction with Other Features Trunking interacts with other features in these ways: • A trunk port cannot be a secure port. • Trunk ports can negotiate with its neighbor to become a trunk... stops trunking. STP port priority for trunking. trunk status (If one of the display. 17-18 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 switchport mode {dynamic {auto | desirable} | trunk} Configure the interface as an 802.1Q trunk port:...
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... the allowed list for a trunk port, the trunk port automatically becomes a member of the enabled VLAN. When VTP detects a newly enabled VLAN and the VLAN is added to VLAN 1, regardless of the switchport trunk allowed setting. Enter interface configuration mode and the port to configure a port as a VLAN trunk port. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17...
... the allowed list for a trunk port, the trunk port automatically becomes a member of the enabled VLAN. When VTP detects a newly enabled VLAN and the VLAN is added to VLAN 1, regardless of the switchport trunk allowed setting. Enter interface configuration mode and the port to configure a port as a VLAN trunk port. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17...
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...VLAN Trunks Chapter 17 Configuring VLANs Step 4 Step 5 Step 6 Step 7 Command Purpose switchport trunk allowed vlan {add | all | except | remove} vlan-list (Optional) Configure the list of VLANs allowed on page 18-14 describes how to enable VTP pruning. end Return to 1001. 17-20 Catalyst 2950 and Catalyst 2955 Switch... Software Configuration Guide 78-11380-10 Each trunk port has its own eligibility list. VTP pruning must be enabled for which VLANs should be pruned from 1 to 4094 when ...
...VLAN Trunks Chapter 17 Configuring VLANs Step 4 Step 5 Step 6 Step 7 Command Purpose switchport trunk allowed vlan {add | all | except | remove} vlan-list (Optional) Configure the list of VLANs allowed on page 18-14 describes how to enable VTP pruning. end Return to 1001. 17-20 Catalyst 2950 and Catalyst 2955 Switch... Software Configuration Guide 78-11380-10 Each trunk port has its own eligibility list. VTP pruning must be enabled for which VLANs should be pruned from 1 to 4094 when ...
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... untagged; To return to the default native VLAN, VLAN 1, use the no switchport trunk native vlan interface configuration command. 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 By default...
... untagged; To return to the default native VLAN, VLAN 1, use the no switchport trunk native vlan interface configuration command. 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 By default...
