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Transit Hub / Spoke Routing Issue

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edited Jun 4, 2020 5:07PM in Oracle Cloud Infrastructure - General 2 comments

Summary

IPSECVPN->DRG->HubLPG->SpokeLPG->Subnet->Host fails intermittently

Content

Yesterday we configured some transit routing from our on-prem network via ipsec VPN using reference architecture.    It was working, then it went down, then it went back up.  To help troubleshoot we created a Linux VM in the Hub VCN.  

We determined:

  1. The ipsec VPN connection did not go down while the spoke was down.
  2. We could connect to the Linux VM within the Hub VCN when the spoke was down.
  3. We could connect to the Spoke VM from the Linux VM within the Hub VCN when the spoke was unavailable via VPN

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