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12 Cards in this Set
- Front
- Back
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What configuration steps are required to configure vPV between identical NX-OS switches (5 bullets)?
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-Enable vPC.
-Define the vPC domain. -Establish peer keepalive connectivity. -Create a peer link. -Create a vPC. |
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What commands would you use to achieve the following:
-Enable vPC and set the vPC domain to 10. -Verify the above. |
feature vpc
show vpc role - last 2 Hex characters of "vPC system-mac" will equal vPC Domain ID. |
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What commands would you use to achieve the following:
-Configure the vPC Peer-Keepalive link for vPC Domain 10. |
vpc domain 10
show vpc peer-keepalive - "vPC keep-alive status" should be "alive" |
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Configure the vPC Peer-Link based on the following requirements:
-Traffic must be load-balanced across Eth1/1-2. |
feature lacp
interface eth 1/1-2 switchport channel-group 20 mode active ! interface port-channel 20 switchport mode trunk switchport trunk allowed vlan 100-105 switchport trunk native vlan 100 vpc peer-link spanning-tree port type network |
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Configure the vPC Member Port on N7K-1 based on the following requirements:
-Use multiple physical interfaces (Eth 1/3-4) for added redundancy. |
interface eth 1/3-4
channel-group 101 mode active interface port-channel 101 switchport mode trunk vpc 101 |
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State the benefits of the "Peer-Switch" command (3 bullets) and apply it to vPC Domain 10.
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-This will reduce traffic loss when there is a restoration of the Peer-Link.
vpc domain 10 |
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If the "Peer-Switch" command wasn't applied, explain how STP works with vPC and how issues may occur (3 bullets).
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-The vPC Primary Peer transmits BPDU's on the vPC links, the Peer Link and any orphan ports.
-The vPC Secondary Peer does not transmit BPDU's on the vPC links. -If the Secondary Peer becomes STP Root, there would be a reconvergence if this switch was lost, which would result in packets loss. |
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Explain how the "Peer-Switch" command overcomes potential STP issues.
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-Both Peer Switches send BPDU's on the vPC links using the vPC System MAC as the STP bridge ID i.e. they appear as a single switch.
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If the vPC Peer-Link fails, but the Peer-Keepalive Link is still operational, how will traffic on the Secondary Peer be affected (2 bullets).
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-All vPC ports will be suspended.
-Orphan ports remain operational. |
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Describe how the vPC Check Rule may create an issue when FHRP's are deployed.
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-Some NAS/Servers using certain NIC teaming techniques may not use an ARP request when responding to client request and may just use the SVI MAC of the switch that forwarded the request.
-The vPC load-balancing algorithm may send this traffic to the wrong switch, which will then traverse the Peer Link to the correct switch. -If the outbound port is also a vPC, the packet will be dropped. |
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Configure the vPC domain to prevent the issues associated with the vPC Check Rule dropping traffic when FHRP's are used. Explain how this will resolve the issue and how to verify (2 bullets).
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vpc domain 10
-Normally each HSRP peer would be able to forward traffic directed to its own SVI MAC and the HSRP virtual MAC. This command will allow each HSRP peer to forward traffic directed to the SVI MAC of the other peer. |
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What is the "go-to" command for verifying vPC configuration?
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show vpc brief
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