Vlans And Private Vlans - Cisco nexus 5000 series Configuration Manual
Nx-os layer 2
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- Cli configuration manual (660 pages) ,
- Configuration manual (334 pages) ,
- Command reference manual (196 pages)
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VLANs and Private VLANs
VLANs and Private VLANs
The Fabric Extender supports Layer 2 VLAN trunks and IEEE 802.1Q VLAN encapsulation. Host interfaces
can be members of private VLANs with the following restrictions:
• You can configure a host interface as an isolated or community access port only.
• You cannot configure a host interface as a promiscuous port.
• You cannot configure a host interface as a private VLAN trunk port.
For more information about VLANs, see the chapter in this guide on Configuring VLANs.
Virtual Port Channels
With a virtual port channel (vPC), you can configure topologies where a Cisco Nexus Fabric Extender is
connected to a pair of parent switches or a pair of Fabric Extenders are connected to a single parent switch.
The vPC can provide multipath connections, which allow you to create redundancy between the nodes on
your network.
A port channel between two FEXs that are connected to the same Cisco Nexus device is not supported.
Note
Virtual port channels (vPCs) cannot span two different FEXs when connected to the same Cisco Nexus
device.
The following vPC topologies are possible with the Fabric Extender:
• The parent switches are connected single homed to Fabric Extenders that are subsequently connected
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.1(3)N1(1)
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to servers with dual interfaces (see the following figure).
Figure 28: Single Homed Fabric Extender vPC Topology
Configuring the Fabric Extender
OL-25842-01
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