What happens if vPC keepalive fails?

What happens if vPC keepalive fails?

vPC keep-alive link failure: If only keep-alive fails, nothing will happen. Only heartbeat between Primary and Secondary node will be lost.

How do I check my vPC consistency?

vPC consistency check Configuration

1. Type 1 – Puts peer device or interface into a suspended state to prevent invalid packet forwarding behaviour. With vPC Graceful Consistency check, suspension occurs only on the secondary peer device.
2. Type 2 – Peer device or Interface still forward traffic.

How do you troubleshoot a vPC?

To troubleshoot VPC connectivity issues, use the AWSSupport-ConnectivityTroubleshooter automation document to check for common issues with:

1. Security group configurations.
2. Network access control list (network ACL) configurations.
3. Route table configurations.

What is vPC keepalive?

vPC Peer-Keepalive Link – Connects both vPC peer switches and carries monitoring traffic to/from each peer switch. Monitoring is performed to ensure the switches are both operational and running vPC. vPC Peer Link – Connects both vPC peer switches and carries BPDUs, HSRPs, and MAC addresses to its vPC peer.

How can we prevent split brain in vPC?

Best practice is to avoid the split brain scenario all together.

1. Configure the peer-link and the keep-alive from entirely independent resources.
2. Create a port-channel for the keep-alive.
3. Use a dedicated sub-interface for the keep-alive.

What is vPC how it is different from VSS?

3) VSS can support L3 port-channels across multiple chassis,however, vpc is used for L2 port-channels only. 4) VSS supports both PAgP and LACP,however, VPC only supports LACP. 5) VSS mainly used for campus environment whereas VPC is used for Data Center environment.

What is split brain in vPC?

Basically, in the vPC world, all links are set to forward, and nothing blocks at layer-2 because Spanning Tree is not really in place here. Cisco calls it a “split-brain” scenario. If that vPC peer-link fails for any reason, both switches assume the role of primary. This then creates the forwarding-loop-from-hell.

How do I remove NAT gateway?

To delete a NAT gateway Open the Amazon VPC console at https://console.aws.amazon.com/vpc/ . In the navigation pane, choose NAT Gateways.

What is VSS and vPC?

Basically VSS and Vpc both are used to create multi chasis etherchannel. 1) vPC is Nexus switch specific feature,however,VSS is created using 6500 series switches. 2) In VSS there will be single control plane for both the switches, where as in vPC there will be separate control plane for every switch.