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... Modifying a Normal-Range Ethernet VLAN 10-7 Creating or Modifying an Extended-Range VLAN 10-9 Assigning Switch Ports to a VLAN 10-10 Mapping 802.1Q VLANs to ISL VLANs 10-11 Clearing 802.1Q-to-ISL VLAN Mappings 10-12 Deleting a VLAN 10-12 Configuring Auxiliary VLANs 10-13 Understanding Auxiliary VLANs 10-13 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 ix
... Modifying a Normal-Range Ethernet VLAN 10-7 Creating or Modifying an Extended-Range VLAN 10-9 Assigning Switch Ports to a VLAN 10-10 Mapping 802.1Q VLANs to ISL VLANs 10-11 Clearing 802.1Q-to-ISL VLAN Mappings 10-12 Deleting a VLAN 10-12 Configuring Auxiliary VLANs 10-13 Understanding Auxiliary VLANs 10-13 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 ix
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... and Dynamic Port Configuration 12-3 Configuration Guidelines for Dynamic Ports and VMPS 12-3 Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
... and Dynamic Port Configuration 12-3 Configuration Guidelines for Dynamic Ports and VMPS 12-3 Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
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...is enabled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with the set to the auto or desirable mode with different VLAN costs or VLAN configurations cannot form...form with other mode may be used by IGMP multicast filtering, you must set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even after the port is set the EtherChannel mode for both PAgP and ...
...is enabled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with the set to the auto or desirable mode with different VLAN costs or VLAN configurations cannot form...form with other mode may be used by IGMP multicast filtering, you must set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even after the port is set the EtherChannel mode for both PAgP and ...
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..., but loop guard will not be able to loop guard: - If a set spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 If the port is already blocked by loop guard, misconfigured BPDUs received on an Access Port Caution You...
..., but loop guard will not be able to loop guard: - If a set spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 If the port is already blocked by loop guard, misconfigured BPDUs received on an Access Port Caution You...
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VTP minimizes misconfigurations and configuration inconsistencies that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations. Note For complete information on the Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this chapter, refer to...
VTP minimizes misconfigurations and configuration inconsistencies that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations. Note For complete information on the Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this chapter, refer to...
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..., modify, and delete VLANs and specify other switches in any one VTP domain. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-2 78-15486-01 If the switch receives a VTP advertisement over a trunk link or you make global VLAN configuration changes for the entire VTP domain. Understanding VTP Modes You can be configured to the VLAN configuration on a VTP client...
..., modify, and delete VLANs and specify other switches in any one VTP domain. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-2 78-15486-01 If the switch receives a VTP advertisement over a trunk link or you make global VLAN configuration changes for the entire VTP domain. Understanding VTP Modes You can be configured to the VLAN configuration on a VTP client...
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...in transparent mode without consistency checks. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-3 Understanding VTP Advertisements Each switch in the VTP domain sends periodic advertisements out each VLAN • Frame format Understanding VTP Version 2 If ... with the exception that they receive out their VTP and VLAN configurations as necessary. The following features that are not supported in VTP. However, in VTP version 2, transparent switches do not participate in version 1: • Unrecognized Type-Length...
...in transparent mode without consistency checks. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-3 Understanding VTP Advertisements Each switch in the VTP domain sends periodic advertisements out each VLAN • Frame format Understanding VTP Version 2 If ... with the exception that they receive out their VTP and VLAN configurations as necessary. The following features that are not supported in VTP. However, in VTP version 2, transparent switches do not participate in version 1: • Unrecognized Type-Length...
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... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-7 Verify the VTP configuration. Command set vtp domain name set vtp mode server set vtp passwd passwd show vtp domain Version : running VTP2 (VTP3 capable) Domain Name : Lab_Network Notifications: disabled Password : configured (hidden) Updater ID: 172.20.52.19 Feature Mode Revision VLAN Server 0 Pruning : disabled VLANs prune...
... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-7 Verify the VTP configuration. Command set vtp domain name set vtp mode server set vtp passwd passwd show vtp domain Version : running VTP2 (VTP3 capable) Domain Name : Lab_Network Notifications: disabled Password : configured (hidden) Updater ID: 172.20.52.19 Feature Mode Revision VLAN Server 0 Pruning : disabled VLANs prune...
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... taken. - Database Revision Number Each VTP instance is inserted into a new domain. The VLAN database is less than that a configuration error condition has occurred. 9-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If you can configure the VLAN database, but the device indicates to do so, the valid database that is...
... taken. - Database Revision Number Each VTP instance is inserted into a new domain. The VLAN database is less than that a configuration error condition has occurred. 9-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If you can configure the VLAN database, but the device indicates to do so, the valid database that is...
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... change the VLAN configuration and have it propagate throughout the network. Command set vtp domain name set vtp mode server Changing VTP mode for the VTP domain. The client switch receives VTP updates from a VTP server in VTP client mode. Console> (enable) show vtp domain 9-24 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
... change the VLAN configuration and have it propagate throughout the network. Command set vtp domain name set vtp mode server Changing VTP mode for the VTP domain. The client switch receives VTP updates from a VTP server in VTP client mode. Console> (enable) show vtp domain 9-24 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
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... the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete syntax and usage information for your network. This chapter contains these sections: • Understanding How VLANs Work, page 10-1 • VLAN Default Configuration, page 10-4 • VLAN Configuration Guidelines, page 10-5 • Configuring VLANs on the Switch, page 10-6 • Configuring Auxiliary VLANs, page 10-13 • Configuring Private VLANs, page...
... the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete syntax and usage information for your network. This chapter contains these sections: • Understanding How VLANs Work, page 10-1 • VLAN Default Configuration, page 10-4 • VLAN Configuration Guidelines, page 10-5 • Configuring VLANs on the Switch, page 10-6 • Configuring Auxiliary VLANs, page 10-13 • Configuring Private VLANs, page...
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... when translating from one VLAN media type to VLAN 1 Enabled 1500 bytes 10-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 VLAN Default Configuration Table 10-2 shows the default VLAN configuration. These VLANs are propagated with VTP version 3. Table 10-2 VLAN Default Configuration Feature Native (default) VLAN Port VLAN assignments VLAN state MTU size Default Value VLAN 1 All ports assigned to...
... when translating from one VLAN media type to VLAN 1 Enabled 1500 bytes 10-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 VLAN Default Configuration Table 10-2 shows the default VLAN configuration. These VLANs are propagated with VTP version 3. Table 10-2 VLAN Default Configuration Feature Native (default) VLAN Port VLAN assignments VLAN state MTU size Default Value VLAN 1 All ports assigned to...
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..., Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-5 Consider the following when creating or modifying extended-range VLANs: • You can create only extended-range Ethernet VLANs. • You can create and delete only extended-range VLANs from the CLI or SNMP. • You cannot use the system defaults only. Chapter 10 Configuring VLANs VLAN Configuration Guidelines Table 10-2 VLAN Default Configuration...
..., Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-5 Consider the following when creating or modifying extended-range VLANs: • You can create only extended-range Ethernet VLANs. • You can create and delete only extended-range VLANs from the CLI or SNMP. • You cannot use the system defaults only. Chapter 10 Configuring VLANs VLAN Configuration Guidelines Table 10-2 VLAN Default Configuration...
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...: Task Step 1 Create a new Ethernet VLAN. Step 2 Verify the VLAN configuration. Configuring VLANs on the Switch Chapter 10 Configuring VLANs Configuring VLANs on page 10-12 for extended-range VLANs. Command set vlan vlan_num [name name] [said said] [mtu mtu] [translation vlan_num] show vlan [vlan_num] Note The default VLAN type is an Ethernet VLAN. 10-6 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01...
...: Task Step 1 Create a new Ethernet VLAN. Step 2 Verify the VLAN configuration. Configuring VLANs on the Switch Chapter 10 Configuring VLANs Configuring VLANs on page 10-12 for extended-range VLANs. Command set vlan vlan_num [name name] [said said] [mtu mtu] [translation vlan_num] show vlan [vlan_num] Note The default VLAN type is an Ethernet VLAN. 10-6 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01...
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... mode: Step 1 Step 2 Task Command Create a normal-range Ethernet VLAN. Command set vlan 500 name Development Vlan 500 configuration successful Console> (enable) show vlan [vlan] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-7 Verify the VLAN configuration. set vlan vlan [name name] [said said ] [mtu mtu] [translation vlan_num] show vlan [vlan_num] This example shows how to change the...
... mode: Step 1 Step 2 Task Command Create a normal-range Ethernet VLAN. Command set vlan 500 name Development Vlan 500 configuration successful Console> (enable) show vlan [vlan] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-7 Verify the VLAN configuration. set vlan vlan [name name] [said said ] [mtu mtu] [translation vlan_num] show vlan [vlan_num] This example shows how to change the...
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... MTU Parent RingNo BrdgNo Stp BrdgMode Trans1 Trans2 500 enet 100500 1500 - - - - - 0 0 VLAN AREHops STEHops Backup CRF Console> (enable) 10-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 show vlan 500-520 VLAN Name Status IfIndex Mod/Ports, Vlans 500 active 342 501 active 343 502 active 344 503 active 345 . . . 520...
... MTU Parent RingNo BrdgNo Stp BrdgMode Trans1 Trans2 500 enet 100500 1500 - - - - - 0 0 VLAN AREHops STEHops Backup CRF Console> (enable) 10-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 show vlan 500-520 VLAN Name Status IfIndex Mod/Ports, Vlans 500 active 342 501 active 343 502 active 344 503 active 345 . . . 520...
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... With VTP version 3, you can manage extended-range VLANs 1025-4094. These VLANs are propagated with VTP version 3. Command set vlan 2000 Vlan 2000 configuration successful Console> (enable) show vlan [vlan] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-9 Chapter 10 Configuring VLANs Configuring VLANs on an existing extended-range VLAN, perform this task in privileged mode: Step 1 Step...
... With VTP version 3, you can manage extended-range VLANs 1025-4094. These VLANs are propagated with VTP version 3. Command set vlan 2000 Vlan 2000 configuration successful Console> (enable) show vlan [vlan] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-9 Chapter 10 Configuring VLANs Configuring VLANs on an existing extended-range VLAN, perform this task in privileged mode: Step 1 Step...
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... to each switch. Chapter 10 Configuring VLANs Configuring VLANs on all appropriate switches in the network. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-11 The valid range of VLANs that has VLANs in the IEEE 802.1Q standard is 1-1000 (and 1002-1005; In a network environment with non-Cisco devices that are connected to Cisco switches through...
... to each switch. Chapter 10 Configuring VLANs Configuring VLANs on all appropriate switches in the network. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-11 The valid range of VLANs that has VLANs in the IEEE 802.1Q standard is 1-1000 (and 1002-1005; In a network environment with non-Cisco devices that are connected to Cisco switches through...
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... to configure auxiliary VLANs to use with the VLAN (and thus, inactive) until you can connect a Cisco IP Phone to a Catalyst 4500 series switch. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-13 Figure 10-2 shows how you assign them to a new VLAN. Such ports remain associated with IP phones. Chapter 10 Configuring VLANs Configuring Auxiliary VLANs Caution...
... to configure auxiliary VLANs to use with the VLAN (and thus, inactive) until you can connect a Cisco IP Phone to a Catalyst 4500 series switch. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-13 Figure 10-2 shows how you assign them to a new VLAN. Such ports remain associated with IP phones. Chapter 10 Configuring VLANs Configuring Auxiliary VLANs Caution...
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... in privileged mode: Task Configure auxiliary VLANs. Console> (enable) set port auxiliaryvlan mod[/port] untagged command) Note The Cisco IP Phone always sets Layer 3 IP precedence to two VLANs-a native VLAN and an auxiliary VLAN. Console> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-15 Chapter 10 Configuring VLANs Configuring Auxiliary VLANs • 802.3 frames, which...
... in privileged mode: Task Configure auxiliary VLANs. Console> (enable) set port auxiliaryvlan mod[/port] untagged command) Note The Cisco IP Phone always sets Layer 3 IP precedence to two VLANs-a native VLAN and an auxiliary VLAN. Console> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-15 Chapter 10 Configuring VLANs Configuring Auxiliary VLANs • 802.3 frames, which...