Guidelines And Limitations For Vtp; Configuring A Vlan; Creating And Deleting A Vlan - Cisco nexus 5000 series Configuration Manual
Nx-os layer 2
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Also See for nexus 5000 series:
- Cli configuration manual (660 pages) ,
- Configuration manual (334 pages) ,
- Command reference manual (196 pages)
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Configuring VLANs
Guidelines and Limitations for VTP
VTP has the following configuration guidelines and limitations:
• When a switch is configured as a VTP client, you cannot create VLANs on the switch in the range of 1
• VLAN 1 is required on all trunk ports used for switch interconnects if VTP is supported in the network.
• If you enable VTP, you must configure either version 1 or version 2. On the Cisco Nexus device, 512
• If system vlan long-name knob is enabled, then VTP configurations will come up in OFF mode and
• The show running-configuration command does not show VLAN or VTP configuration information
• When deployed with vPC, both vPC switches must be configured identically. vPC performs a Type 2
• VTP advertisements are not sent out on Cisco Nexus Fabric Extender ports.
• Private VLANs (PVLANs) are supported only when the switch is in transparent mode.
• If you are using VTP in a Token Ring environment, you must use version 2.
• When a switch is configured in VTP client or server mode, VLANs 1002 to1005 are reserved VLANs.
• VTP pruning is not supported.
• You must enter the copy running-config startup-config command followed by a reload after changing
Configuring a VLAN
Creating and Deleting a VLAN
You can create or delete all VLANs except the default VLAN and those VLANs that are internally allocated
for use by the switch. Once a VLAN is created, it is automatically in the active state.
OL-25842-01
to 1005.
Disabling VLAN 1 from any of these ports prevents VTP from functioning properly.
VLANs are supported. If these switches are in a distribution network with other switches, the limit
remains the same.
On the Cisco Nexus device, 512 VLANs are supported. If these switches are in a distribution network
with other switches, the VLAN limit for the VTP domain is 512. If a Cisco Nexus device client/server
receives additional VLANs from a VTP server, they transition to transparent mode.
users can change the mode to Transparent. However, changing the mode to Server or Client is not
allowed.
for VLANs 1 to 1000.
consistency check for VTP configuration parameters.
a reserved VLAN range. For example:
switch(config)# system vlan 2000 reserve
This will delete all configs on vlans 2000-2081. Continue anyway? (y/n) [no] y
After the switch reload, VLANs 2000 to 2081 are reserved for internal use, which requires that you enter
the copy running-config startup-config command before the switch reload. Creating VLANs within
this range is not allowed.
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.1(3)N1(1)
Configuring a VLAN
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