From Teknologisk videncenter
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Revision as of 15:49, 23 August 2010
VTP
VTP Concepts
What is VTP
 Simple network VLAN mangement |
 Enterprise VLAN management |
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Default VTP Configuration
 Default VTP Configuration |
VTP Domains
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 VTP Domain name propagation |
| The network manager configures the VTP domain name as cisco1 on the VTP server switch S1. The VTP server sends out a VTP advertisement with the new domain name embedded inside. The S2 and S3 VTP server switches update their VTP configuration to the new domain name.
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VTP Advertising
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- Destination MAC address - This address is set to 01-00-0C-CC-CC-CC, which is the reserved multicast address for all VTP messages.
- LLC field - Logical link control (LLC) field contains a destination service access point (DSAP) and a source service access point (SSAP) set to the value of AA.
- SNAP field - Subnetwork Access Protocol (SNAP) field has an OUI set to AAAA and type set to 2003.
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- Version - This field displays the VTP version used. On Cisco 2960 swithces the version is either VTP V1 og VTP V2.
- Code - A code that identifies the type of advertisements-
- Followers - The Followers field indicates that this packet is followed by a Subset Advertisement packet.
- MgmtD Len - Indicated the length of the management domain name.
- Management Domain Name - The name of the VTP Domain.
- Update Identity - The update identity is the IP address og the switch that is the last to have incremented the configuration revision.
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 VTP Subset advertisements |
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VTP Modes
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Step 1 - Server sends summary
Step 2 - Clients sends request
Step 3 - Server sends requested summary
Step 4 - Server sends subset
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VTP Pruning
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Configure VTP
Configuring VTP
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 VTP Configuration guidelines |
| Configure the VTP server
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 Configure VTP domain name |
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| Configure the VTP Clients
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Troubleshooting VTP Configurations
 Common VTP configuration Issues |
 Troubleshoot VTP configuration |
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 Incorrect VTP domain name |
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 Switches set to VTP client mode |
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 Incorrect revision number |
 Reset VTP revision number |
Managing VLANs on a VTP Server
 Configure new VLANs and ports |
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Chapter Summary
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