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Beginner

GRE HA setup

Hi everyone,

I'm trying to figure out the best way to setup GRE over IPSEC and provide HA for GRE.

I have attached  a basic configuration file for the setup below

My Setup:

                                                              VENDOR ROUTER

                                                                           |

                                                                           |

                                                                           |

                                                                         ISP

                                                                           |

                                                                           |

                                                                    CORP ASA

                                                                           |

                                                                           |

                                                                      CORE

                                                                           |

                                                                           |

                                                             -----------------------------

                                                             |                            |

                                                             |                            |

                                                    ROUTER_B               ROUTER_A                         

                                                                                                   

1) configure IPSEC tunnel between Vendor Router and VPN ASA

2) Configure GRE between Vendor Router and both Router_B and A

3) Run EIGRP on Vendor Router

4) If I loose Tunnel to Router_A traffic should route out Router_B

Everyone's tags (3)
5 REPLIES 5
Rising star

GRE HA setup

Yes, it will work.

Just increase the delay on the tunnel interface on RouterB, so that your internal EIGRP peer (i.e. EIGRP peer behid Router A and B) will use RouterA as primary and "B" as a backup, due to lower delay on RouterA.

thanks

Rizwan Rafeek

Beginner

GRE HA setup

thanks Rizwan

I was thinking of modifying the delay on the tunnel to router B on the Vendor Router...

Rising star

GRE HA setup

"I was thinking of modifying the delay on the tunnel to router B on the Vendor Router"

Yes that will make as well.

Thanks

Beginner

GRE HA setup

Great Thanks!

One more thing.. would it make sense to make the Vendor router a Stub in EIGRP?

Rising star

GRE HA setup

"One more thing.. would it make sense to make the Vendor router a Stub in EIGRP?"

Yes, as long as the Vendor fine with it.