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nx.os.and.cisco.nexus.switching.2nd.edition.1587143046

Nexus Switching 2nd Edition

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Congo# show vpc<br />

Legend:<br />

(*) - local vPC is down, forwarding via<br />

vPC peer-link<br />

vPC domain id : 1<br />

Peer status<br />

: peer adjacency formed<br />

ok<br />

vPC keep-alive status<br />

: peer is alive<br />

Configuration consistency status: success<br />

vPC role<br />

: primary<br />

Number of vPCs configured : 1<br />

Peer Gateway<br />

: Disabled<br />

Dual-active excluded VLANs : -<br />

vPC Peer-link status<br />

-------------------------------------------------------<br />

--------------<br />

id Port Status Active vlans<br />

-- ---- ------ ------------------------------------<br />

--------------<br />

1 Po100 up 1-20,100<br />

vPC status<br />

-------------------------------------------------------<br />

---------------<br />

id Port Status Consistency<br />

Reason<br />

Active vlans<br />

-- ---- ------ ----------- ------------------------<br />

-- ------------<br />

1 Po1 up success success<br />

20,100<br />

vPC Peer-Gateway<br />

The vPC Peer-Gateway feature was introduced in NX-OS 4.2(1). This feature is designed to<br />

enable certain storage, application servers, or load balancers to implement fast-path<br />

functionality. This causes nodes to send return traffic to a specific MAC address of the<br />

sender rather than HSRP address. By default, this traffic might be dropped as vPC loop<br />

avoidance does not enable traffic received on a vPC peer-link to be forwarded out a vPC<br />

interface (loop avoidance). A vPC Peer-Gateway enables the vPC peer device to forward<br />

packets destined for its peer router MAC locally.<br />

To enable the peer-gateway, enter the following comm<strong>and</strong>:<br />

Congo(config-vpc-domain)# peer-gateway<br />

vPC Peer-Switch<br />

vPC creates an environment in which two devices are seen as a single device for purp<strong>os</strong>es<br />

of Etherchannel. Peer-Switch extends this to make the vPC domain appear as a single

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