Troubleshooting Vpcs; About Troubleshooting Vpcs; Initial Troubleshooting Vpcs Checklist; Chapter - Cisco Nexus 9000 Series Troubleshooting Manual

Troubleshooting vPCs

This chapter contains the following sections:
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About Troubleshooting vPCs

A vPC allows links that are physically connected to two different devices to appear as a single port channel
by a third device.

Initial Troubleshooting vPCs Checklist

Begin troubleshooting vPC issues by checking the following issues first:
Checklist
Is the vPC keepalive link mapped to a separate VRF? If not, it will be mapped to the
management VRF by default. In this case, do you have a management switch connected to
the management ports on both vPC peer devices?
Verify that both the source and destination IP addresses used for the peer-keepalive messages
are reachable from the VRF associated with the vPC peer-keepalive link.
Verify that the peer-keepalive link is up. Otherwise, the vPC peer link will not come up.
About Troubleshooting vPCs, page 45
Initial Troubleshooting vPCs Checklist, page 45
Verifying vPCs Using the CLI, page 46
Received Type 1 Configuration Element Mismatch, page 47
Cannot Enable the vPC Feature, page 48
vPCs in Blocking State, page 48
VLANs on a vPC Moved to Suspend State, page 48
Hosts with an HSRP Gateway Cannot Access Beyond Their VLAN, page 49
C H A P T E R
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
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