Virtual PortChannel Support

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casp10
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Introduction to Virtual PortChannel Technology
Virtual PortChannels (vPCs) allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. The third device can be a switch, a server, or any other networking device that supports IEEE 802.3ad PortChannels. For more information about vPC, see the Cisco documentation.
Identification of vPC Configuration
CA Spectrum
monitors vPC domains formed by vPC-enabled Cisco Nexus 7000 series switches with firmware version 6.2.2 that support the CISCO-VPC-MIB. The following vPC parameters are monitored for a particular vPC domain:
  • Peer link status
  • Peer-keepalive status
  • vPC role status
  • vPC dual-active status
  • vPC PortChannels configured
The monitoring of vPC domains is enabled by creating vPC domain container models (vPC domain model) under vPC Manager node in the Navigation pane of OneClick. Each vPC domain model contains two peer switches that form that vPC domain. All vPC specific alarms and information are displayed at the vPC domain level in OneClick.
The following image shows how a vPC domain model containing two peer switches is arranged in OneClick:
vPC_domain_OC.png
As shown in the image,
vPC-Domain-70
is created which contains two peer switches, the value 70 indicates the domain id. The peer switches shown here are simulated, and not real-time switches. If you want to give other meaningful name to a vPC domain model, you can edit its name. 
vPC Events, Alarms, and Correlation
The following table lists the events that are generated on a vPC domain:
Events Code
Event Description
Alarm Raised or Cleared
0x00210def
VPC DOMAIN HOST LINK STATUS CHANGE EVENT
Major alarm is raised.
0x00210df1
VPC HOST LINK CLEAR EVENT
Major alarm is cleared.
0x00210df2
VPC DOMAIN ROLE STATUS CHANGE EVENT
Alarm is not raised.
0x00210df3
VPC DOMAIN KEEP ALIVE STATUS CHANGE EVENT
Major alarm is raised.
0x00210df4
VPC PEER KEEP ALIVE CLEAR EVENT
Major alarm is cleared.
0x00210dfa
VPC DOMAIN DUAL ACTIVE STATUS CHANGE EVENT
Major alarm is raised.
0x00210dfb
VPC DOMAIN DUAL ACTIVE CLEAR EVENT
Major alarm is cleared.
0x00210df9
DETECTED ANOTHER DEVICE EVENT
Minor alarm is cleared.
0x00210dfd
PEER DEVICE NOT RESPONDING TO POLLS EVENT
Critical alarm is raised.
0x00210dfe
PEERDEVICE_RESPONDING TO POLLS EVENT
Critical alarm is cleared.
 
When monitoring your vPC environment, vPC domain models display an alarm state for the following conditions:
Peer Link is Down
The attribute "cVpcStatusPeerLinkStatus" is polled to monitor this condition. A major alarm is raised when the value of this attribute is "down". The alarm is cleared when the value is "up".
Peer-keepalive Link is Disabled or PeerUnreachable or suspendedasdestipunreachable or misconfigured
The attribute "cVpcPeerKeepAliveStatus" is polled to monitor this condition. A major alarm is raised for this condition. The alarm is cleared when the value of this attribute is "Alive".
Dual Active Detected
The attribute "cVpcDualActiveDetectionStatus" is polled to monitor this condition. A critical alarm is raised if the value of this attribute is "True". In this case, the two alarms that are mentioned before are made symptoms to this critical alarm. The alarm is cleared when the value changes to "False".
Third Device found with the same vPC Domain ID
A minor alarm is raised when a third device is found the same domain id.
vPC Peer Switch is Down
This condition applies to the peer switch when it stops responding to polls. In this case, a critical alarm is raised.
 
Non-vPC alarms (like NCM, SPM, so on) are not rolled to vPC domain container models. Alarms are raised only for the vPC conditions that are mentioned here.
vPC Views in OneClick
For each vPC domain model, the
Alarms
,
Events
, and
List
tab in the
Contents
pane displays alarms, events, and details of peer switches. The
Information
tab displays the following information under the
Virtual Port Channel (vPC)
view:
Configured Primary
This field displays the peer switch that is configured as primary.
Configured Secondary
This field displays the peer switch that is configured as secondary.
Current Primary
This field displays the peer switch that is operationally primary.
Host Link status
This field displays the following information for each peer switch:
Host-Link Interfaces Index
This field displays the interface index.
Host-Link Interface Name
This field displays the PortChannel configured on the corresponding interface index.
Host-Link Interface Status
This field displays the status of the interface index.
Spotlight View for vPC Domains
From the
Universe
topology, you can use the
Spotlight
view to directly view the vPC specific details of all vPC domains.
Follow these steps:
  1. Select 
    Universe
    container from the Navigation pane.
  2. Click
    Spotlight View
    from Topology tab, and Select
    vPC Domains
    .
    The vPC Domains List dialog appears.
  3.  Select the required vPC domain from the list, and select
    Hide Icons
    .
    You can see the two vPC peer switches of that domain.
Locater Search for vPC Peer Models
You can find vPC peer switches using the
Locater
search from the Navigation pane. The
Locater
search includes the
vPC Manager
folder for this purpose. You can find vPC peer switches using the following two options:
All vPC peer Models using vPC Domain ID
Use this option to find by the Domain ID. If there are multiple vPC domains, click the
List
button to enter Domain IDs using the available delimiters. You can also import a text file that contains a list of Domain IDs ( use newline, comma, space, or semi-colon as the delimiter).
All vPC peers
Use this option to find by Landscapes.
Troubleshooting Tips
If vPC domains and their vPC peer models are not created in the Oneclick, consider the following points:
  1. Check whether the firmware version that is running on the vPC devices is below 6.2, and upgrade to leverage the vPC support. CISCO-VPC-MIB is supported only from firmaware version 6.2 and above.
  2. After an upgrade, you must reconfigure the vPC enabled devices in OneClick using the reconfigure option.