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GRE Tunnel Not Forming to S-Series

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TitleGRE Tunnel Not Forming to S-Series
Symptoms
  • Ping fails to subnets on other side of tunnel
  • Show port status tbp.0.1 shows one side Oper up and admin down
  • Cannot ping tunnel destination IP from opposite end of tunnel
  • Traceroute to destination IP goes incorrectly to default gateway
Environment
S-Series
Cause
Router is sending the GRE the wrong way because it has no route to the tunnel destination IP
Resolution
Add static routes
Additional notes

 

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