Руководство По Проектированию для Cisco Cisco Nexus 5010 Switch
Design Guide
Figure 10.
Worst Case of Dual Active Failure
2-Port vPC Versus 4+-Port vPC
When you use virtual PortChannels, it is important and useful to categorize two configuration types:
●
4+-port vPCs with two links to each Cisco Nexus switch:
On the Cisco Nexus 5000 this configuration
consumes one full hardware PortChannel out of each individual switch. For example, if the vPC consists of
four ports, each switch locally owns a 2-port PortChannel.
four ports, each switch locally owns a 2-port PortChannel.
●
2-port vPC with one link to each Cisco Nexus switch:
With this configuration, each switch individually
owns an individual link. On the Cisco Nexus 5000 Series platform, this type of EtherChannel technology
doesn’t consume any hardware resources.
doesn’t consume any hardware resources.
As the example in Figure 11 shows, at the time of this writing on the Cisco Nexus 5000 Series you can configure a
maximum of 16 hardware port channels. But you can configure more than 16 virtual PortChannels, where the vPC
has one port connected to one Cisco Nexus 5000 Series device and the other port connected to the other Cisco
Nexus 5000 Series, either directly or through the fabric extender.
maximum of 16 hardware port channels. But you can configure more than 16 virtual PortChannels, where the vPC
has one port connected to one Cisco Nexus 5000 Series device and the other port connected to the other Cisco
Nexus 5000 Series, either directly or through the fabric extender.
© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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