Page History

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• @Activation
  
  • Get the Segment IDs of all devices in the network from Network Config service
  • Get "isEdgeRouter" attribute for this device from Network Config service
  • Create Neighbor <-> Port mapping database based on current topology
  • Create Port <-> Neighbor mapping database based on current topology
  • If AUDIT is in progress at Group subsystem for this device
    • Start a timer and perform the Sanity check
  • Sanity Check
    • Compute power set of all Neighbors
    • Pair them with all applicable Segment IDs if the current device is a edge router
    • Determine the SRDefaultGroupKeys for each pair and create groups using Group service API if there is no group existing with this Key
• @LINK_UP involving one of device ports
  • Find the Neighbor Device ID
  • If (Neighbor is already present in the database for this device)
    • That means this new link is part of group of links to that Neighbor (e.g. LAG)
    • Determine all SRDefaultGroupKeys that are impacted due to this new link from the information of existing device ports Port <-> Neighbor & Neighbor <-> Port databases and Segment IDs
    • Invoke "addBucketsToGroup()" API of the GroupService with a new SRDefaultGroupKey for all the impacted Groups
    • Update Neighbor <-> Port mapping database
    • Update Port <-> Neighbor mapping database
  • Else
    
    • That means this new link discovers a new neighbor
    • Update Neighbor <-> Port mapping database
    • Update Port <-> Neighbor mapping database
    • Recompute neighbor power sets with updated neighbor database and determine the delta entries and pair them up with applicable segment IDs
    • Determine the SRDefaultGroupKeys for each pair and create groups using Group service API if there is no group existing with this Key.
• @PORT_UP
  
  • No Action
• @PORT_DOWN
  
  • Determine all SRDefaultGroupKeys that are impacted due to this PORT_DOWN event from the information of Port <-> Neighbor & Neighbor <-> Port databases and Segment IDs
  • Invoke "removeBucketsFromGroup()" API of the GroupService with a new SRDefaultGroupKey for all the impacted Groups
  • Update Neighbor <-> Port mapping database
  • Update Port <-> Neighbor mapping database
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Policy Group Handler & Recovery

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